Wow this is awesome. One thing I've always wondered, why don't we use vacuum pumps for brake bleeds? You can just fill the tank with mineral or...
Wow this is awesome.
One thing I've always wondered, why don't we use vacuum pumps for brake bleeds? You can just fill the tank with mineral or dot and attach it onto the master cylinder and away you go. The commercial vacuum bleeder fox recommends has 4 tanks for different fluids already
This is getting dangerously close to a brake forum comment, but I think the reason you wouldn't see a vacuum bleeder for brakes is that the seals are designed to seal against positive pressure, but not against significant negative pressure. I've been testing Mavens and DB8's for the last 6 months and, even though the official SRAM mineral oil bleed procedure recommends drawing a vacuum using the Pro Bleed Kit syringe, I've stopped doing that part of the bleed process because I'm able to draw basically an endless amount of air out of my lines, at the lever or at the caliper, by pulling a significant vacuum. I think the seals are just letting more air in, so I've started bleeding with positive pressure only and that's been working A LOT better. My two cents. Also possible that I'm doing something else wrong, but yes I did try switching syringes, bleed fittings, etc and kept producing endless air bubbles.
I can't believe we don't have an online conversion kit for reg posts using a servo that pulls the cable at the bottom of the post...
I can't believe we don't have an online conversion kit for reg posts using a servo that pulls the cable at the bottom of the post from anyone. Archer would have set the world on fire with that instead of half mechanical shifting.
Supposedly a company called https://ogbikeworks.com/ is developing one; they claim they were working with Bike Yoke on theirs before it got delayed/cancelled:Big ol' caveats, 1. It's...
Supposedly a company called https://ogbikeworks.com/ is developing one; they claim they were working with Bike Yoke on theirs before it got delayed/cancelled:
Big ol' caveats, 1. It's MTBR: 2. If you read through subsequent posts it sounds like Bikeworks may be a little flaky, so grain of salt and all that 3. Their site isn't very confidence inspiring
"Exciting News from OG Bikeworks! We are OG Bikeworks, creators of the actuator technology. Due to unresolved contractual matters, we are no longer collaborating with BikeYoke. However, we’re thrilled to announce the upcoming release of an aftermarket wireless dropper kit! Our kit features the same core technology as what was shown at Eurobike but comes with some key improvements, including a sleek forged aluminum remote compatible with popular mounting systems like Matchmaker. This kit will allow you to convert your existing BikeYoke dropper to wireless operation—no more cables! (Patents Pending) Expected Release: 6 months Estimated MSRP: $120 USD Stay tuned for more updates—we’re excited to bring this game-changing technology to the MTB world!"
The guys at Onlymotion are close to selling their wireless electronics kit. Pretty amazing that they have managed to pack all this into such a small volume. Also, I truly appreciate that you can charge it without removing the dropper, in contrast to certain mtbr comments. As long as you utilize this conversion kit with any of your mechanical droppers that fit it, you just need to put the included USB-C into the frame once. 10min for 2000 actuations and no proprietary charger sounds good to me. Might be difficult to fit the right insertion on some frames with the additional cylinder at the bottom of the post. We don't have all the info yet, but a visual guess of that cylinder height seems pretty similar to the original dropper pull mechanism, it would likely need to be removed, plus the 30mm radius cable hose that sticks out of it.
As soon as I can, I'll try to get one and report back to you all on its performance.
My name is Simon, and I work at OnlyMotion, a Canadian company. We’ve been deep in development on something we believe could change how riders use their dropper posts, and we’re now wrapping up prototyping. Before moving into production, we wanted to share the idea here and gauge interest.
The concept is simple: a wireless electric conversion kit that upgrades your existing dropper post. For some of you, this idea isn’t new—it’s been floating around for years. It took us years to get here, but now it’s no longer just an idea.
Preliminary characteristics:
Compatibility: Works with most dropper posts—OneUp V2/V3, FOX Transfer, Bontrager Drop Line confirmed (more coming).
Quick Installation: We designed the charge port cable to be smooth and easy to route without snagging.
USB-C Fast Charging: External charging port; about 10 minutes gives you a full day of riding.
Battery Life: Around 50 hours or 2000 actuations per charge. Recharge with your phone, power bank or car USB port—no proprietary charger.
Weatherproof & Maintenance-Free: Built to handle the elements with zero upkeep.
In-tube battery: Compact unit hidden from the elements.
Price: ~278$USD
We’d really appreciate your thoughts and feedback. Our goal is to make sure this truly works for riders before we finalize everything.
Bringing a high-tech product like this to life has been a tough but rewarding adventure and we’re proud of how far we’ve come. It may not be for everyone, but we’ve put everything we have into delivering the best experience possible.
Production is planned to start this spring. Don’t worry, we won’t miss the bike season!
If you want to make sure you don’t miss any updates, follow OnlyMotionco on Instagram.
Wow this is awesome. One thing I've always wondered, why don't we use vacuum pumps for brake bleeds? You can just fill the tank with mineral or...
Wow this is awesome.
One thing I've always wondered, why don't we use vacuum pumps for brake bleeds? You can just fill the tank with mineral or dot and attach it onto the master cylinder and away you go. The commercial vacuum bleeder fox recommends has 4 tanks for different fluids already
This is getting dangerously close to a brake forum comment, but I think the reason you wouldn't see a vacuum bleeder for brakes is that the...
This is getting dangerously close to a brake forum comment, but I think the reason you wouldn't see a vacuum bleeder for brakes is that the seals are designed to seal against positive pressure, but not against significant negative pressure. I've been testing Mavens and DB8's for the last 6 months and, even though the official SRAM mineral oil bleed procedure recommends drawing a vacuum using the Pro Bleed Kit syringe, I've stopped doing that part of the bleed process because I'm able to draw basically an endless amount of air out of my lines, at the lever or at the caliper, by pulling a significant vacuum. I think the seals are just letting more air in, so I've started bleeding with positive pressure only and that's been working A LOT better. My two cents. Also possible that I'm doing something else wrong, but yes I did try switching syringes, bleed fittings, etc and kept producing endless air bubbles.
I recently bleed brakes by vacuuming on one side but with the other side (syringe) open which lets the oil flow through. That way there is a vacuum, but the oil can pull through so hopefully the level of vacuum is fairly low. With a proper machine you could dial it in to a point where the seals in the master might still be holding tight instead of letting air past.
The seals in the caliper SHOULD work with vacuum as well as high pressure...
The OnlyMotion upgrade... It's the price of a full dropper? And still has a cable that needs to be routed through the frame to charge it? Aside of removing the bar-to-frame cable (of which I already have three besides the one for the dropper...), what is the exact benefit of it then?
Taken from Ben’s most recent instagram post.Looks like the new reverb battery hides just under the seat away from the sides when in the dropped position.Also...
Taken from Ben’s most recent instagram post.
Looks like the new reverb battery hides just under the seat away from the sides when in the dropped position.
Also somewhat of different view of the code / maven callipers (not rounded like production more boxy).
Could be the new SRAM Motive brakes, but hard to tell from Ben's pictures.
I can't believe we don't have an online conversion kit for reg posts using a servo that pulls the cable at the bottom of the post...
I can't believe we don't have an online conversion kit for reg posts using a servo that pulls the cable at the bottom of the post from anyone. Archer would have set the world on fire with that instead of half mechanical shifting.
Supposedly a company called https://ogbikeworks.com/ is developing one; they claim they were working with Bike Yoke on theirs before it got delayed/cancelled:Big ol' caveats, 1. It's...
Supposedly a company called https://ogbikeworks.com/ is developing one; they claim they were working with Bike Yoke on theirs before it got delayed/cancelled:
Big ol' caveats, 1. It's MTBR: 2. If you read through subsequent posts it sounds like Bikeworks may be a little flaky, so grain of salt and all that 3. Their site isn't very confidence inspiring
"Exciting News from OG Bikeworks! We are OG Bikeworks, creators of the actuator technology. Due to unresolved contractual matters, we are no longer collaborating with BikeYoke. However, we’re thrilled to announce the upcoming release of an aftermarket wireless dropper kit! Our kit features the same core technology as what was shown at Eurobike but comes with some key improvements, including a sleek forged aluminum remote compatible with popular mounting systems like Matchmaker. This kit will allow you to convert your existing BikeYoke dropper to wireless operation—no more cables! (Patents Pending) Expected Release: 6 months Estimated MSRP: $120 USD Stay tuned for more updates—we’re excited to bring this game-changing technology to the MTB world!"
The guys at Onlymotion are close to selling their wireless electronics kit. Pretty amazing that they have managed to pack all this into such a small...
The guys at Onlymotion are close to selling their wireless electronics kit. Pretty amazing that they have managed to pack all this into such a small volume. Also, I truly appreciate that you can charge it without removing the dropper, in contrast to certain mtbr comments. As long as you utilize this conversion kit with any of your mechanical droppers that fit it, you just need to put the included USB-C into the frame once. 10min for 2000 actuations and no proprietary charger sounds good to me. Might be difficult to fit the right insertion on some frames with the additional cylinder at the bottom of the post. We don't have all the info yet, but a visual guess of that cylinder height seems pretty similar to the original dropper pull mechanism, it would likely need to be removed, plus the 30mm radius cable hose that sticks out of it.
As soon as I can, I'll try to get one and report back to you all on its performance.
My name is Simon, and I work at OnlyMotion, a Canadian company. We’ve been deep in development on something we believe could change how riders use their dropper posts, and we’re now wrapping up prototyping. Before moving into production, we wanted to share the idea here and gauge interest.
The concept is simple: a wireless electric conversion kit that upgrades your existing dropper post. For some of you, this idea isn’t new—it’s been floating around for years. It took us years to get here, but now it’s no longer just an idea.
Preliminary characteristics:
Compatibility: Works with most dropper posts—OneUp V2/V3, FOX Transfer, Bontrager Drop Line confirmed (more coming).
Quick Installation: We designed the charge port cable to be smooth and easy to route without snagging.
USB-C Fast Charging: External charging port; about 10 minutes gives you a full day of riding.
Battery Life: Around 50 hours or 2000 actuations per charge. Recharge with your phone, power bank or car USB port—no proprietary charger.
Weatherproof & Maintenance-Free: Built to handle the elements with zero upkeep.
In-tube battery: Compact unit hidden from the elements.
Price: ~278$USD
We’d really appreciate your thoughts and feedback. Our goal is to make sure this truly works for riders before we finalize everything.
Bringing a high-tech product like this to life has been a tough but rewarding adventure and we’re proud of how far we’ve come. It may not be for everyone, but we’ve put everything we have into delivering the best experience possible.
Production is planned to start this spring. Don’t worry, we won’t miss the bike season!
If you want to make sure you don’t miss any updates, follow OnlyMotionco on Instagram.
Thanks for reading!
This is the most mountain bike industry product ever. We are adding a tiny servo on the bottom of the dropper that limits insertion and also you have to charge it and pay $300 for it? For what to get ride of 2 feet of cable?
Will the remote and electronics in the post be reliable? Maybe, will they be as reliable as a $2 shifter cable? No.
This is getting dangerously close to a brake forum comment, but I think the reason you wouldn't see a vacuum bleeder for brakes is that the...
This is getting dangerously close to a brake forum comment, but I think the reason you wouldn't see a vacuum bleeder for brakes is that the seals are designed to seal against positive pressure, but not against significant negative pressure. I've been testing Mavens and DB8's for the last 6 months and, even though the official SRAM mineral oil bleed procedure recommends drawing a vacuum using the Pro Bleed Kit syringe, I've stopped doing that part of the bleed process because I'm able to draw basically an endless amount of air out of my lines, at the lever or at the caliper, by pulling a significant vacuum. I think the seals are just letting more air in, so I've started bleeding with positive pressure only and that's been working A LOT better. My two cents. Also possible that I'm doing something else wrong, but yes I did try switching syringes, bleed fittings, etc and kept producing endless air bubbles.
I’ve had two pairs of Mavens and both had one caliper that could be vacuum bled just fine and one that pulled bubbles without end.
I can't believe we don't have an online conversion kit for reg posts using a servo that pulls the cable at the bottom of the post...
I can't believe we don't have an online conversion kit for reg posts using a servo that pulls the cable at the bottom of the post from anyone. Archer would have set the world on fire with that instead of half mechanical shifting.
Supposedly a company called https://ogbikeworks.com/ is developing one; they claim they were working with Bike Yoke on theirs before it got delayed/cancelled:Big ol' caveats, 1. It's...
Supposedly a company called https://ogbikeworks.com/ is developing one; they claim they were working with Bike Yoke on theirs before it got delayed/cancelled:
Big ol' caveats, 1. It's MTBR: 2. If you read through subsequent posts it sounds like Bikeworks may be a little flaky, so grain of salt and all that 3. Their site isn't very confidence inspiring
"Exciting News from OG Bikeworks! We are OG Bikeworks, creators of the actuator technology. Due to unresolved contractual matters, we are no longer collaborating with BikeYoke. However, we’re thrilled to announce the upcoming release of an aftermarket wireless dropper kit! Our kit features the same core technology as what was shown at Eurobike but comes with some key improvements, including a sleek forged aluminum remote compatible with popular mounting systems like Matchmaker. This kit will allow you to convert your existing BikeYoke dropper to wireless operation—no more cables! (Patents Pending) Expected Release: 6 months Estimated MSRP: $120 USD Stay tuned for more updates—we’re excited to bring this game-changing technology to the MTB world!"
The guys at Onlymotion are close to selling their wireless electronics kit. Pretty amazing that they have managed to pack all this into such a small...
The guys at Onlymotion are close to selling their wireless electronics kit. Pretty amazing that they have managed to pack all this into such a small volume. Also, I truly appreciate that you can charge it without removing the dropper, in contrast to certain mtbr comments. As long as you utilize this conversion kit with any of your mechanical droppers that fit it, you just need to put the included USB-C into the frame once. 10min for 2000 actuations and no proprietary charger sounds good to me. Might be difficult to fit the right insertion on some frames with the additional cylinder at the bottom of the post. We don't have all the info yet, but a visual guess of that cylinder height seems pretty similar to the original dropper pull mechanism, it would likely need to be removed, plus the 30mm radius cable hose that sticks out of it.
As soon as I can, I'll try to get one and report back to you all on its performance.
My name is Simon, and I work at OnlyMotion, a Canadian company. We’ve been deep in development on something we believe could change how riders use their dropper posts, and we’re now wrapping up prototyping. Before moving into production, we wanted to share the idea here and gauge interest.
The concept is simple: a wireless electric conversion kit that upgrades your existing dropper post. For some of you, this idea isn’t new—it’s been floating around for years. It took us years to get here, but now it’s no longer just an idea.
Preliminary characteristics:
Compatibility: Works with most dropper posts—OneUp V2/V3, FOX Transfer, Bontrager Drop Line confirmed (more coming).
Quick Installation: We designed the charge port cable to be smooth and easy to route without snagging.
USB-C Fast Charging: External charging port; about 10 minutes gives you a full day of riding.
Battery Life: Around 50 hours or 2000 actuations per charge. Recharge with your phone, power bank or car USB port—no proprietary charger.
Weatherproof & Maintenance-Free: Built to handle the elements with zero upkeep.
In-tube battery: Compact unit hidden from the elements.
Price: ~278$USD
We’d really appreciate your thoughts and feedback. Our goal is to make sure this truly works for riders before we finalize everything.
Bringing a high-tech product like this to life has been a tough but rewarding adventure and we’re proud of how far we’ve come. It may not be for everyone, but we’ve put everything we have into delivering the best experience possible.
Production is planned to start this spring. Don’t worry, we won’t miss the bike season!
If you want to make sure you don’t miss any updates, follow OnlyMotionco on Instagram.
Thanks for reading!
With that price and the added stack it will be a hard sell.
I can't believe we don't have an online conversion kit for reg posts using a servo that pulls the cable at the bottom of the post...
I can't believe we don't have an online conversion kit for reg posts using a servo that pulls the cable at the bottom of the post from anyone. Archer would have set the world on fire with that instead of half mechanical shifting.
Supposedly a company called https://ogbikeworks.com/ is developing one; they claim they were working with Bike Yoke on theirs before it got delayed/cancelled:Big ol' caveats, 1. It's...
Supposedly a company called https://ogbikeworks.com/ is developing one; they claim they were working with Bike Yoke on theirs before it got delayed/cancelled:
Big ol' caveats, 1. It's MTBR: 2. If you read through subsequent posts it sounds like Bikeworks may be a little flaky, so grain of salt and all that 3. Their site isn't very confidence inspiring
"Exciting News from OG Bikeworks! We are OG Bikeworks, creators of the actuator technology. Due to unresolved contractual matters, we are no longer collaborating with BikeYoke. However, we’re thrilled to announce the upcoming release of an aftermarket wireless dropper kit! Our kit features the same core technology as what was shown at Eurobike but comes with some key improvements, including a sleek forged aluminum remote compatible with popular mounting systems like Matchmaker. This kit will allow you to convert your existing BikeYoke dropper to wireless operation—no more cables! (Patents Pending) Expected Release: 6 months Estimated MSRP: $120 USD Stay tuned for more updates—we’re excited to bring this game-changing technology to the MTB world!"
The guys at Onlymotion are close to selling their wireless electronics kit. Pretty amazing that they have managed to pack all this into such a small...
The guys at Onlymotion are close to selling their wireless electronics kit. Pretty amazing that they have managed to pack all this into such a small volume. Also, I truly appreciate that you can charge it without removing the dropper, in contrast to certain mtbr comments. As long as you utilize this conversion kit with any of your mechanical droppers that fit it, you just need to put the included USB-C into the frame once. 10min for 2000 actuations and no proprietary charger sounds good to me. Might be difficult to fit the right insertion on some frames with the additional cylinder at the bottom of the post. We don't have all the info yet, but a visual guess of that cylinder height seems pretty similar to the original dropper pull mechanism, it would likely need to be removed, plus the 30mm radius cable hose that sticks out of it.
As soon as I can, I'll try to get one and report back to you all on its performance.
My name is Simon, and I work at OnlyMotion, a Canadian company. We’ve been deep in development on something we believe could change how riders use their dropper posts, and we’re now wrapping up prototyping. Before moving into production, we wanted to share the idea here and gauge interest.
The concept is simple: a wireless electric conversion kit that upgrades your existing dropper post. For some of you, this idea isn’t new—it’s been floating around for years. It took us years to get here, but now it’s no longer just an idea.
Preliminary characteristics:
Compatibility: Works with most dropper posts—OneUp V2/V3, FOX Transfer, Bontrager Drop Line confirmed (more coming).
Quick Installation: We designed the charge port cable to be smooth and easy to route without snagging.
USB-C Fast Charging: External charging port; about 10 minutes gives you a full day of riding.
Battery Life: Around 50 hours or 2000 actuations per charge. Recharge with your phone, power bank or car USB port—no proprietary charger.
Weatherproof & Maintenance-Free: Built to handle the elements with zero upkeep.
In-tube battery: Compact unit hidden from the elements.
Price: ~278$USD
We’d really appreciate your thoughts and feedback. Our goal is to make sure this truly works for riders before we finalize everything.
Bringing a high-tech product like this to life has been a tough but rewarding adventure and we’re proud of how far we’ve come. It may not be for everyone, but we’ve put everything we have into delivering the best experience possible.
Production is planned to start this spring. Don’t worry, we won’t miss the bike season!
If you want to make sure you don’t miss any updates, follow OnlyMotionco on Instagram.
Thanks for reading!
Nice.
Brand logo reminds me of a company that was somewhere in the outdoors/hunting market but I can't put my name on it.
Anybody have any info on the "Special Project" wheels from Hunt on the Tmac vid? Always liked their stuff. Still running my Endurowides and like them. Wondering if this could be a DH/FR entry.
The battery will likely add to the length of the post, and could be a show stopper with the current trend for the longest possible post...
The battery will likely add to the length of the post, and could be a show stopper with the current trend for the longest possible post. The wireless receiver circuitry also need to be outside metal, so placing it with the battery either at the seat clamp or the collar is natural. Relocating the battery and replacing it with a charging port is an alternative.
On e-bikes a post should/could have connection to the main battery/controller for the ultimate in clean look and integration.
What about an annular battery that sits around the stanchion of a 34.9 post in the blank space designed for a 30.9?
To maximize drop, the stack height needs to be as low and the internals as compact as possible. The battery on Reverb AXS has had problems...
To maximize drop, the stack height needs to be as low and the internals as compact as possible. The battery on Reverb AXS has had problems with contact to the rear tire on a few frames when bottoming out. A different solution might solve it, but probably not with the current AXS battery.. The solutions of the new and less attractive posts may be optimal.
Alternatively the battery could be located under the saddle, but in front. It would then need to extend forward and downwards so it clears the seat clamp/downtube. The battery and connections would be out if the way, but could resemble a single ball hanging underneath the saddle..
i mean the area between and above the rails, make it a side clamp and you could use all the space...
Taken from Ben’s most recent instagram post.Looks like the new reverb battery hides just under the seat away from the sides when in the dropped position.Also...
Taken from Ben’s most recent instagram post.
Looks like the new reverb battery hides just under the seat away from the sides when in the dropped position.
Also somewhat of different view of the code / maven callipers (not rounded like production more boxy).
They could put a belt on in place of the short chain and scoop up the belted purse no problem with Loic on the bike.
Likely a small belt drive or gearbox going on there. Rather than 2-chainz setup like Pivot's bike. I enhanced the image a bit and there's no visible second chain on the exterior.
Taken from Ben’s most recent instagram post.Looks like the new reverb battery hides just under the seat away from the sides when in the dropped position.Also...
Taken from Ben’s most recent instagram post.
Looks like the new reverb battery hides just under the seat away from the sides when in the dropped position.
Also somewhat of different view of the code / maven callipers (not rounded like production more boxy).
I’ve had two pairs of Mavens and both had one caliper that could be vacuum bled just fine and one that pulled bubbles without end.
Sick. Sounds like my brakes. I was worried this was somehow my fault. I just purchased a Maven/DB8 compatible bleed cup from Pinner Machine Shop in Pemberton and I'm excited to be able to do simple lever bleeds without needing to pull a vacuum. Between this and the old "zip tie the lever overnight" trick, I'm, hoping I should be able to get these things feeling good.
Sick. Sounds like my brakes. I was worried this was somehow my fault. I just purchased a Maven/DB8 compatible bleed cup from Pinner Machine Shop in...
Sick. Sounds like my brakes. I was worried this was somehow my fault. I just purchased a Maven/DB8 compatible bleed cup from Pinner Machine Shop in Pemberton and I'm excited to be able to do simple lever bleeds without needing to pull a vacuum. Between this and the old "zip tie the lever overnight" trick, I'm, hoping I should be able to get these things feeling good.
I love Pete's bits. Absolute legend.. I broke my SECOND axle in a month in my DT350 on a Saturday before leaving for a month long BC cup trip. A few texts later, I'm picking up a custom stainless steel axle on a nice Sunday morning.
To further derail thread into a rumor about innovative bleeding..when the current gen Shimano brakes came out I worked in shops and did a lot of brake work. I gave their top-down bleed a try on my own bike. Just let the fluid run from the bleed cup, close the system, do the "zip tie"(use a toe strap m8) situation overnight, pump the lever a few times, remove the cup and I usually don't need to bleed my brake until I break a frame and have to route it. Haven't tried it with Mavens, but absolutely would try.
Sick. Sounds like my brakes. I was worried this was somehow my fault. I just purchased a Maven/DB8 compatible bleed cup from Pinner Machine Shop in...
Sick. Sounds like my brakes. I was worried this was somehow my fault. I just purchased a Maven/DB8 compatible bleed cup from Pinner Machine Shop in Pemberton and I'm excited to be able to do simple lever bleeds without needing to pull a vacuum. Between this and the old "zip tie the lever overnight" trick, I'm, hoping I should be able to get these things feeling good.
There's a "piston massage" process that seems to be important.
Dario mentions it on the pinkypod. Two other reviewers in the mtb-o-sphere mention disliking the brakes with one mentioning "a bleed (from SRAM) that didn't seem to get all the air out." After bleeding with the piston massage those reviewers liked them a lot.
Worth looking up the process (it doesn't seem to be a time-heavy step, just important) and giving it another try, probably!
Sick. Sounds like my brakes. I was worried this was somehow my fault. I just purchased a Maven/DB8 compatible bleed cup from Pinner Machine Shop in...
Sick. Sounds like my brakes. I was worried this was somehow my fault. I just purchased a Maven/DB8 compatible bleed cup from Pinner Machine Shop in Pemberton and I'm excited to be able to do simple lever bleeds without needing to pull a vacuum. Between this and the old "zip tie the lever overnight" trick, I'm, hoping I should be able to get these things feeling good.
The ziptie the lever overnight trick works because of increased pressure (not vacuum). The pressure squeezes any air bubbles which allows them (being smaller) to more easily rise up past fluid in the hose. Conversely, bleeding with a vaccum may actually make the bubbles less likely to rise.
Flicking the levers does something similar - shrinking the bubbles momentarily which can help them to detatch from the hose wall (and start moving or pass into the reservoir).
IME the weakest link when trying to vacuum bleed a brake is where the barb on a bleed fitting goes into the clear hose; a vacuum can pull air bubbles into the system through those cracks (very bad, the opposite of the intent of bleeeding), pressure might cause seeping leaks (not as bad, mop it up with a rag).
In the real world if you struggle to achieve good bleeds in just a few minutes, improved technique and practice will likely help more than anything. Having a vacuum bleeder won't mitigate poor technique, it will take longer to set up, cost more and might suck bubbles in to the system.
This is getting dangerously close to a brake forum comment, but I think the reason you wouldn't see a vacuum bleeder for brakes is that the seals are designed to seal against positive pressure, but not against significant negative pressure. I've been testing Mavens and DB8's for the last 6 months and, even though the official SRAM mineral oil bleed procedure recommends drawing a vacuum using the Pro Bleed Kit syringe, I've stopped doing that part of the bleed process because I'm able to draw basically an endless amount of air out of my lines, at the lever or at the caliper, by pulling a significant vacuum. I think the seals are just letting more air in, so I've started bleeding with positive pressure only and that's been working A LOT better. My two cents. Also possible that I'm doing something else wrong, but yes I did try switching syringes, bleed fittings, etc and kept producing endless air bubbles.
The guys at Onlymotion are close to selling their wireless electronics kit. Pretty amazing that they have managed to pack all this into such a small volume. Also, I truly appreciate that you can charge it without removing the dropper, in contrast to certain mtbr comments. As long as you utilize this conversion kit with any of your mechanical droppers that fit it, you just need to put the included USB-C into the frame once. 10min for 2000 actuations and no proprietary charger sounds good to me. Might be difficult to fit the right insertion on some frames with the additional cylinder at the bottom of the post. We don't have all the info yet, but a visual guess of that cylinder height seems pretty similar to the original dropper pull mechanism, it would likely need to be removed, plus the 30mm radius cable hose that sticks out of it.
As soon as I can, I'll try to get one and report back to you all on its performance.
source: https://www.mtbr.com/threads/dropper-post-electric-conversion-kit-yes-it%E2%80%99s-happening.1236857/
The posted thread form mtbr :
My name is Simon, and I work at OnlyMotion, a Canadian company. We’ve been deep in development on something we believe could change how riders use their dropper posts, and we’re now wrapping up prototyping. Before moving into production, we wanted to share the idea here and gauge interest.
The concept is simple: a wireless electric conversion kit that upgrades your existing dropper post. For some of you, this idea isn’t new—it’s been floating around for years. It took us years to get here, but now it’s no longer just an idea.
Preliminary characteristics:
Compatibility: Works with most dropper posts—OneUp V2/V3, FOX Transfer, Bontrager Drop Line confirmed (more coming).
Quick Installation: We designed the charge port cable to be smooth and easy to route without snagging.
USB-C Fast Charging: External charging port; about 10 minutes gives you a full day of riding.
Battery Life: Around 50 hours or 2000 actuations per charge. Recharge with your phone, power bank or car USB port—no proprietary charger.
Weatherproof & Maintenance-Free: Built to handle the elements with zero upkeep.
In-tube battery: Compact unit hidden from the elements.
Price: ~278$USD
We’d really appreciate your thoughts and feedback. Our goal is to make sure this truly works for riders before we finalize everything.
Bringing a high-tech product like this to life has been a tough but rewarding adventure and we’re proud of how far we’ve come. It may not be for everyone, but we’ve put everything we have into delivering the best experience possible.
Production is planned to start this spring. Don’t worry, we won’t miss the bike season!
If you want to make sure you don’t miss any updates, follow OnlyMotionco on Instagram.
Thanks for reading!
I recently bleed brakes by vacuuming on one side but with the other side (syringe) open which lets the oil flow through. That way there is a vacuum, but the oil can pull through so hopefully the level of vacuum is fairly low. With a proper machine you could dial it in to a point where the seals in the master might still be holding tight instead of letting air past.
The seals in the caliper SHOULD work with vacuum as well as high pressure...
The OnlyMotion upgrade... It's the price of a full dropper? And still has a cable that needs to be routed through the frame to charge it? Aside of removing the bar-to-frame cable (of which I already have three besides the one for the dropper...), what is the exact benefit of it then?
Could be the new SRAM Motive brakes, but hard to tell from Ben's pictures.
This is the most mountain bike industry product ever. We are adding a tiny servo on the bottom of the dropper that limits insertion and also you have to charge it and pay $300 for it? For what to get ride of 2 feet of cable?
Will the remote and electronics in the post be reliable? Maybe, will they be as reliable as a $2 shifter cable? No.
I’ve had two pairs of Mavens and both had one caliper that could be vacuum bled just fine and one that pulled bubbles without end.
Did I miss the press release on the new Ibis Oso? Reach numbers seem completely nuts, but I guess it's a touch less ugly and offers decent value.
Oso - Ibis Cycles Inc.
With that price and the added stack it will be a hard sell.
Seems every bit as ugly as the last one if you ask me....
Is it the gen 5 motor?
Nice.
Brand logo reminds me of a company that was somewhere in the outdoors/hunting market but I can't put my name on it.
Gen 4
Front page of Vital has the press release... lol: Ibis Launches the Oso 1.1 - Mountain Bike Press Release - Vital MTB
Anybody have any info on the "Special Project" wheels from Hunt on the Tmac vid? Always liked their stuff. Still running my Endurowides and like them. Wondering if this could be a DH/FR entry.
New Specialized DH prototype on the Pinkbikes homepage
https://www.pinkbike.com/news/spotted-specialized-downhill-bike-with-two-chains.html
What about an annular battery that sits around the stanchion of a 34.9 post in the blank space designed for a 30.9?
i mean the area between and above the rails, make it a side clamp and you could use all the space...
Fox gearbox patent from the other site
https://www.pinkbike.com/news/fox-factory-granted-patent-for-a-gearbox…
They could put a belt on in place of the short chain and scoop up the belted purse no problem with Loic on the bike.
lol, DOA
I spy with my little eye, a jackshaft
I'd assumed the second chain was on the non-drive side.
I wonder if existing Level levers could be paired to these new calipers...
Could be hidden by a 3d printed fairing? I never had Specialized down as a high pivot company though.
Likely a small belt drive or gearbox going on there. Rather than 2-chainz setup like Pivot's bike. I enhanced the image a bit and there's no visible second chain on the exterior.
Yes, that was shown in the link yesterday from the XCO race.
The Motive brakes are probably also Mineral Oil so I don’t think the seals/internals for SRAM’s DOT brakes will work unfortunately 🙁
Sick. Sounds like my brakes. I was worried this was somehow my fault. I just purchased a Maven/DB8 compatible bleed cup from Pinner Machine Shop in Pemberton and I'm excited to be able to do simple lever bleeds without needing to pull a vacuum. Between this and the old "zip tie the lever overnight" trick, I'm, hoping I should be able to get these things feeling good.
I love Pete's bits. Absolute legend.. I broke my SECOND axle in a month in my DT350 on a Saturday before leaving for a month long BC cup trip. A few texts later, I'm picking up a custom stainless steel axle on a nice Sunday morning.
To further derail thread into a rumor about innovative bleeding..when the current gen Shimano brakes came out I worked in shops and did a lot of brake work. I gave their top-down bleed a try on my own bike. Just let the fluid run from the bleed cup, close the system, do the "zip tie"(use a toe strap m8) situation overnight, pump the lever a few times, remove the cup and I usually don't need to bleed my brake until I break a frame and have to route it. Haven't tried it with Mavens, but absolutely would try.
I'll see myself out until I innovate.
There's a "piston massage" process that seems to be important.
Dario mentions it on the pinkypod. Two other reviewers in the mtb-o-sphere mention disliking the brakes with one mentioning "a bleed (from SRAM) that didn't seem to get all the air out." After bleeding with the piston massage those reviewers liked them a lot.
Worth looking up the process (it doesn't seem to be a time-heavy step, just important) and giving it another try, probably!
The ziptie the lever overnight trick works because of increased pressure (not vacuum). The pressure squeezes any air bubbles which allows them (being smaller) to more easily rise up past fluid in the hose. Conversely, bleeding with a vaccum may actually make the bubbles less likely to rise.
Flicking the levers does something similar - shrinking the bubbles momentarily which can help them to detatch from the hose wall (and start moving or pass into the reservoir).
IME the weakest link when trying to vacuum bleed a brake is where the barb on a bleed fitting goes into the clear hose; a vacuum can pull air bubbles into the system through those cracks (very bad, the opposite of the intent of bleeeding), pressure might cause seeping leaks (not as bad, mop it up with a rag).
In the real world if you struggle to achieve good bleeds in just a few minutes, improved technique and practice will likely help more than anything. Having a vacuum bleeder won't mitigate poor technique, it will take longer to set up, cost more and might suck bubbles in to the system.
Let's continue this conversation over here: vitalmtb.com/forums/hub/nerding-out-brakes-shall-we-not-another-tech-deraliment