MTB Tech Rumors and Innovation

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sspomer
Posts
6141
Joined
6/26/2009
Location
Boise, ID US
Fantasy
5/22/2025 9:12am Edited Date/Time 5/22/2025 9:25am

trek's new Line MTB grips - cutouts in the lock-on housing to add some cushion is the theory

- Strategic core cut-outs allow for 28% more padding at key touchpoints
- Larger tread under palms and smaller at fingers optimizes grip and padding
- Softer compound boosts ride feel for the ultimate comfort and control
- Intentional left and right tread design follows contours of rider's hands
- Made from 80% recycled material
- 3mm M4 bolt increases hold and resists stripping
- 32mm diameter

Comp model shown, $14.99 - https://www.trekbikes.com/us/en_US/equipment/bike-accessories/bike-handlebar-grips-tape/bike-handlebar-grips/trek-line-comp-mtb-grip-set/p/48830/?colorCode=greendark_black

since they're not on the bars, they squish a lot more in the video clip

5
1
5/22/2025 9:17am
juliusha wrote:
very rought astimation on what this would do to the Kinematics of the bike:Blue is the version pirrion is running, pink the productionis high antirise the...

very rought astimation on what this would do to the Kinematics of the bike:

Blue is the version pirrion is running, pink the production

is high antirise the new trend?

image 324

Do you see a change in Anti rise?More photos

Do you see a change in Anti rise?

More photos

IMG 6652.jpeg?VersionId=2oJb .9aip2WdOKIeYqiNIMG 6654.jpeg?VersionId=dEPIIMG 6655.png?VersionId=4XF4koMx T5Bn4TOVDNV4

They've run this previously, trying to dig up the photos but can't remember which race in the last 2 years.

1
thericeman
Posts
8
Joined
1/19/2025
Location
Aberystwyth GB
5/22/2025 9:20am
sspomer wrote:
trek's new Line MTB grips - cutouts in the lock-on housing to add some cushion is the theory- Strategic core cut-outs allow for 28% more padding...

trek's new Line MTB grips - cutouts in the lock-on housing to add some cushion is the theory

- Strategic core cut-outs allow for 28% more padding at key touchpoints
- Larger tread under palms and smaller at fingers optimizes grip and padding
- Softer compound boosts ride feel for the ultimate comfort and control
- Intentional left and right tread design follows contours of rider's hands
- Made from 80% recycled material
- 3mm M4 bolt increases hold and resists stripping
- 32mm diameter

Comp model shown, $14.99 - https://www.trekbikes.com/us/en_US/equipment/bike-accessories/bike-handlebar-grips-tape/bike-handlebar-grips/trek-line-comp-mtb-grip-set/p/48830/?colorCode=greendark_black

since they're not on the bars, they squish a lot more in the video clip

Burgtec did this with the ratboy bars and I’d say it definitely makes a difference

3
5/22/2025 9:23am

That bike is beautiful, huge step up from the previous designs. Hope they make a Rise with this silhouette.

11
Mr. P
Posts
80
Joined
5/8/2010
Location
Rocklin, CA US
5/22/2025 10:08am
sspomer wrote:
trek's new Line MTB grips - cutouts in the lock-on housing to add some cushion is the theory- Strategic core cut-outs allow for 28% more padding...

trek's new Line MTB grips - cutouts in the lock-on housing to add some cushion is the theory

- Strategic core cut-outs allow for 28% more padding at key touchpoints
- Larger tread under palms and smaller at fingers optimizes grip and padding
- Softer compound boosts ride feel for the ultimate comfort and control
- Intentional left and right tread design follows contours of rider's hands
- Made from 80% recycled material
- 3mm M4 bolt increases hold and resists stripping
- 32mm diameter

Comp model shown, $14.99 - https://www.trekbikes.com/us/en_US/equipment/bike-accessories/bike-handlebar-grips-tape/bike-handlebar-grips/trek-line-comp-mtb-grip-set/p/48830/?colorCode=greendark_black

since they're not on the bars, they squish a lot more in the video clip

Finally, combining comfort with convenience. I run push ons as lock-on cores feel like more of the bar and only leave a few mm for padding.

2
5/22/2025 10:27am
juliusha wrote:
very rought astimation on what this would do to the Kinematics of the bike:Blue is the version pirrion is running, pink the productionis high antirise the...

very rought astimation on what this would do to the Kinematics of the bike:

Blue is the version pirrion is running, pink the production

is high antirise the new trend?

image 324

To say it plainly, yes. That's why you've been seeing the chainstays on nearly every production DH bike settle on a midpivot. They'll all calculate the...

To say it plainly, yes. That's why you've been seeing the chainstays on nearly every production DH bike settle on a midpivot. They'll all calculate the rider's CG differently, but nearly everyone is chasing high AR numbers at the moment, and the easiest way to do that is to change where the chainstay mounts. In that graph the bike reaches the 100% AR mark at around 40-50% travel, so it'll pack down a bit at sag, until it goes past that 100%, where it will want to stand up a little. This basically means the bike is experiencing a form of equilibrium under braking, any braking force at any point in the travel will try to bring it to that 100% mark.

Sorry I was half sleeping when I first saw the graph and thought it was AS.  Personally I just don’t get the high AR, I guess us mortals ride the brakes too much, or at least I do and it makes the shock feel so bad!

2
metadave
Posts
1250
Joined
2/15/2016
Location
Revelstoke, BC CA
Fantasy
5/22/2025 10:29am

I rarely think most modern bikes are actually interesting, some are cool, but not actually interesting. That Rallon is awesome and huge props to Orbea for making something that looks amazing and has features that actually benefit riders. 

18
sspomer
Posts
6141
Joined
6/26/2009
Location
Boise, ID US
Fantasy
5/22/2025 10:32am

@Jason_Schroeder in action on the new Rallon on our insta channel

3
5/22/2025 10:40am
The bike comes with 3 weights. I applaud the out of the box thinking!

The bike comes with 3 weights. I applaud the out of the box thinking!

IMG 6744.jpeg?VersionId=ARItrAYYHR5qIyEp6 xkLzlJB

Talking about weights, I just ran some numbers from a test I did with and without BB weights. 
Same trail, no changes besides 1000g on bb. Using Syn data and 6 axis IMU on axles and BB recording 2000 times per second.

1. Rear Axle vertical Acceleration with weight 

Positive Acceleration: Decreased by ~1.93%

Negative Acceleration: Decreased by ~3.18%

2. BB frame vertical Acceleration with weight

Positive Acceleration: Decreased by ~0.54%

Negative Acceleration: Decreased by ~5.48%
 

Yes there’s always negatives to adding weight, but just giving an idea of what I found.

IMG 6554
12
5/22/2025 11:14am
The bike comes with 3 weights. I applaud the out of the box thinking!

The bike comes with 3 weights. I applaud the out of the box thinking!

IMG 6744.jpeg?VersionId=ARItrAYYHR5qIyEp6 xkLzlJB
Talking about weights, I just ran some numbers from a test I did with and without BB weights. Same trail, no changes besides 1000g on bb. Using...

Talking about weights, I just ran some numbers from a test I did with and without BB weights. 
Same trail, no changes besides 1000g on bb. Using Syn data and 6 axis IMU on axles and BB recording 2000 times per second.

1. Rear Axle vertical Acceleration with weight 

Positive Acceleration: Decreased by ~1.93%

Negative Acceleration: Decreased by ~3.18%

2. BB frame vertical Acceleration with weight

Positive Acceleration: Decreased by ~0.54%

Negative Acceleration: Decreased by ~5.48%
 

Yes there’s always negatives to adding weight, but just giving an idea of what I found.

IMG 6554

What weights that ?? 

HexonJuan
Posts
396
Joined
6/10/2015
Location
WI US
5/22/2025 11:44am
 
Orbea Rallon %C2%A9 J%C3%A9r%C3%A9mie Reuiller-2951Orbea Rallon %C2%A9 J%C3%A9r%C3%A9mie Reuiller-3094.jpg?VersionId=MkbEMyzVLHls8Z3OdvnJgY8JQmyroofowler RZ94713.jpg?VersionId=F1wORl8FNGVHsUDnkeRFJA1kEOrbea Rallon %C2%A9 J%C3%A9r%C3%A9mie Reuiller-5998roofowler RZ94722

 

Some def Unno touches to the ID, but all in all a way better looking chassis. If this language carries over to the Occam LT and it loses the headset routing, colour me piqued.

4
5/22/2025 11:51am Edited Date/Time 5/22/2025 11:52am
The bike comes with 3 weights. I applaud the out of the box thinking!

The bike comes with 3 weights. I applaud the out of the box thinking!

IMG 6744.jpeg?VersionId=ARItrAYYHR5qIyEp6 xkLzlJB
Talking about weights, I just ran some numbers from a test I did with and without BB weights. Same trail, no changes besides 1000g on bb. Using...

Talking about weights, I just ran some numbers from a test I did with and without BB weights. 
Same trail, no changes besides 1000g on bb. Using Syn data and 6 axis IMU on axles and BB recording 2000 times per second.

1. Rear Axle vertical Acceleration with weight 

Positive Acceleration: Decreased by ~1.93%

Negative Acceleration: Decreased by ~3.18%

2. BB frame vertical Acceleration with weight

Positive Acceleration: Decreased by ~0.54%

Negative Acceleration: Decreased by ~5.48%
 

Yes there’s always negatives to adding weight, but just giving an idea of what I found.

IMG 6554

What weights that ?? 

Scuba diving belt weight from Amazon. They have 500g and 1000g

4
5/22/2025 11:54am

Sharing @nathan999x press release for their Tube Tether that I think is pretty neat way to carry a tube with a used tube (tube-ception)- https://www.vitalmtb.com/news/press-release/introducing-tube-tether-simple-secure-way-carry-your-spare-tube 

IMG 0740 0.jpg?VersionId=Kq1ru

The Tube Tether is currently available for $30 CAD through NWG Outdoor Gear's online store. Every unit is handmade with attention to detail, meaning stock is limited.

For more information, visit https://nwgoutdoorgear.square.site/

9
jonkranked
Posts
1197
Joined
5/5/2016
Location
Norristown, PA US
5/22/2025 12:02pm

Scuba diving belt weight from Amazon. They have 500g and 1000g

shipping costs can rack up quick, find a local dive shop. 

2
pinkrobe
Posts
266
Joined
5/16/2015
Location
Revelstoke, BC CA
5/22/2025 12:25pm
Sharing @nathan999x press release for their Tube Tether that I think is pretty neat way to carry a tube with a used tube (tube-ception)- https://www.vitalmtb.com/news/press-release/introducing-tube-tether-simple-secure-way-carry-your-spare-tube ...

Sharing @nathan999x press release for their Tube Tether that I think is pretty neat way to carry a tube with a used tube (tube-ception)- https://www.vitalmtb.com/news/press-release/introducing-tube-tether-simple-secure-way-carry-your-spare-tube 

IMG 0740 0.jpg?VersionId=Kq1ru

The Tube Tether is currently available for $30 CAD through NWG Outdoor Gear's online store. Every unit is handmade with attention to detail, meaning stock is limited.

For more information, visit https://nwgoutdoorgear.square.site/

I remember when these sorts of things were all the rage. I think I have 5-6 of the Dakine tube/tool holders lying around the house. I don't know why I have so many - a couple were giveaways from reps, I found one by a dumpster, I might have even purchased one. 

2
bikelurker
Posts
180
Joined
3/23/2023
Location
Bilbao, Vizcaya ES
5/22/2025 12:38pm
The cover is officially off, Orbea's new Rallon DH and Enduro bike is live - https://www.vitalmtb.com/features/first-ride-revealing-rallon-orbeas-dual-purpose-enduro-and-downhill-machine Rallon Highlights- Carbon front & rear triangle //...

The cover is officially off, Orbea's new Rallon DH and Enduro bike is live - https://www.vitalmtb.com/features/first-ride-revealing-rallon-orbeas-dual-purpose-enduro-and-downhill-machine 

OrbeaRallonDHEnduroReview

Rallon Highlights

- Carbon front & rear triangle // alloy rocker and lower link
- Enduro - mixed wheels or 29-inch // DH - mixed wheels only
- Linkage-driven single pivot design with Orbea's Concentric Boost rear axle pivot

Travel:
- DH - 200mm rear wheel travel // 200mm fork
- Enduro - 170mm rear wheel travel // 180mm fork

- Progressive and linear leverage rate adjustment
- High and low geometry flip chip (enduro models)
- 442mm or 450mm chain stay length
- +/- .75-degree head angle adjustment
- Internal frame storage and water bottle mount
- Optional weights can be added to the lower link (up to 583g DH/550g enduro)
- 148mm boost rear spacing
- Sizes: S-XL
- Enduro builds: E10 - $5,699 // E-TEAM - $7,199 // E-LTD - $9,999
- DH build: D-LTD - $8,299
- Weight (size XL, weights installed): E-LTD - 36.3 lbs (16.5 kg) // D-LTD - 37.1 lbs (16.85 kg) 

I am the only one wanting it with 200mm rear travel and a SC fork up front?

4
1
badIuck
Posts
11
Joined
11/5/2021
Location
DE
5/22/2025 1:42pm Edited Date/Time 5/22/2025 1:43pm

That bike is beautiful, huge step up from the previous designs. Hope they make a Rise with this silhouette.

Unfortunately not possible. Since the motor is in the way, the shock position and therefor the toptube will always be much higher on an e bike with the shock standing on front of the seat tube.

2
5/22/2025 1:49pm
Talking about weights, I just ran some numbers from a test I did with and without BB weights. Same trail, no changes besides 1000g on bb. Using...

Talking about weights, I just ran some numbers from a test I did with and without BB weights. 
Same trail, no changes besides 1000g on bb. Using Syn data and 6 axis IMU on axles and BB recording 2000 times per second.

1. Rear Axle vertical Acceleration with weight 

Positive Acceleration: Decreased by ~1.93%

Negative Acceleration: Decreased by ~3.18%

2. BB frame vertical Acceleration with weight

Positive Acceleration: Decreased by ~0.54%

Negative Acceleration: Decreased by ~5.48%
 

Yes there’s always negatives to adding weight, but just giving an idea of what I found.

IMG 6554

What, if any suspension adjustments did you make?

2
5/22/2025 1:57pm

Scuba diving belt weight from Amazon. They have 500g and 1000g

jonkranked wrote:

shipping costs can rack up quick, find a local dive shop. 

Support your local dive shop!

10
5/22/2025 1:57pm
The cover is officially off, Orbea's new Rallon DH and Enduro bike is live - https://www.vitalmtb.com/features/first-ride-revealing-rallon-orbeas-dual-purpose-enduro-and-downhill-machine Rallon Highlights- Carbon front & rear triangle //...

The cover is officially off, Orbea's new Rallon DH and Enduro bike is live - https://www.vitalmtb.com/features/first-ride-revealing-rallon-orbeas-dual-purpose-enduro-and-downhill-machine 

OrbeaRallonDHEnduroReview

Rallon Highlights

- Carbon front & rear triangle // alloy rocker and lower link
- Enduro - mixed wheels or 29-inch // DH - mixed wheels only
- Linkage-driven single pivot design with Orbea's Concentric Boost rear axle pivot

Travel:
- DH - 200mm rear wheel travel // 200mm fork
- Enduro - 170mm rear wheel travel // 180mm fork

- Progressive and linear leverage rate adjustment
- High and low geometry flip chip (enduro models)
- 442mm or 450mm chain stay length
- +/- .75-degree head angle adjustment
- Internal frame storage and water bottle mount
- Optional weights can be added to the lower link (up to 583g DH/550g enduro)
- 148mm boost rear spacing
- Sizes: S-XL
- Enduro builds: E10 - $5,699 // E-TEAM - $7,199 // E-LTD - $9,999
- DH build: D-LTD - $8,299
- Weight (size XL, weights installed): E-LTD - 36.3 lbs (16.5 kg) // D-LTD - 37.1 lbs (16.85 kg) 

I haven't seen a product launch with such a positive reception in quite a while. Impressive. 

However, I have the same concern I always have with travel adjustment frames- tuned stiffness. 

If you change the axle to crown on your fork, change your rear travel, even adjust your chainstay length, you are changing the stiffness/compliance of the frame. In this case the increase to a DH fork isn't that big a deal- normally a longer axle to crown will make the bike flex more, but dual crown forks have shorter axle to crown lengths so going from 180 single crown to 200 dual crown is a very little (if any) change. 

More on the stiffness/compliance front, beyond just travel adjustments, for Enduro racing and riding in general, you want a more compliant ride (riding longer, less practiced trails with less travel and more fatigued) while with DH you want precision (riding shorter, fewer courses that you can practice a lot more). 

Thoughts? Or is all this moot since few companies even bother to tune their various frame size stiffness differently?

4
5
shakazulu12
Posts
19
Joined
10/5/2021
Location
Vancouver, WA US
5/22/2025 1:57pm
bikelurker wrote:

I am the only one wanting it with 200mm rear travel and a SC fork up front?

I used to do this with my Crestline RS205.  Just left a 12 speed cassette on it and went back and forth.  Ultimately ended up just not bothering to take the dual crown off if I was trail riding.

6
earleb
Posts
359
Joined
3/23/2023
Location
North Vancouver, BC CA
Fantasy
5/22/2025 2:32pm
The cover is officially off, Orbea's new Rallon DH and Enduro bike is live - https://www.vitalmtb.com/features/first-ride-revealing-rallon-orbeas-dual-purpose-enduro-and-downhill-machine Rallon Highlights- Carbon front & rear triangle //...

The cover is officially off, Orbea's new Rallon DH and Enduro bike is live - https://www.vitalmtb.com/features/first-ride-revealing-rallon-orbeas-dual-purpose-enduro-and-downhill-machine 

OrbeaRallonDHEnduroReview

Rallon Highlights

- Carbon front & rear triangle // alloy rocker and lower link
- Enduro - mixed wheels or 29-inch // DH - mixed wheels only
- Linkage-driven single pivot design with Orbea's Concentric Boost rear axle pivot

Travel:
- DH - 200mm rear wheel travel // 200mm fork
- Enduro - 170mm rear wheel travel // 180mm fork

- Progressive and linear leverage rate adjustment
- High and low geometry flip chip (enduro models)
- 442mm or 450mm chain stay length
- +/- .75-degree head angle adjustment
- Internal frame storage and water bottle mount
- Optional weights can be added to the lower link (up to 583g DH/550g enduro)
- 148mm boost rear spacing
- Sizes: S-XL
- Enduro builds: E10 - $5,699 // E-TEAM - $7,199 // E-LTD - $9,999
- DH build: D-LTD - $8,299
- Weight (size XL, weights installed): E-LTD - 36.3 lbs (16.5 kg) // D-LTD - 37.1 lbs (16.85 kg) 

I haven't seen a product launch with such a positive reception in quite a while. Impressive. However, I have the same concern I always have with travel...

I haven't seen a product launch with such a positive reception in quite a while. Impressive. 

However, I have the same concern I always have with travel adjustment frames- tuned stiffness. 

If you change the axle to crown on your fork, change your rear travel, even adjust your chainstay length, you are changing the stiffness/compliance of the frame. In this case the increase to a DH fork isn't that big a deal- normally a longer axle to crown will make the bike flex more, but dual crown forks have shorter axle to crown lengths so going from 180 single crown to 200 dual crown is a very little (if any) change. 

More on the stiffness/compliance front, beyond just travel adjustments, for Enduro racing and riding in general, you want a more compliant ride (riding longer, less practiced trails with less travel and more fatigued) while with DH you want precision (riding shorter, fewer courses that you can practice a lot more). 

Thoughts? Or is all this moot since few companies even bother to tune their various frame size stiffness differently?

Gotta save something for the 2026-27 frame update. 

They could do new molds with thinner diameter seatstays or chainstays. Offer the front end in two different layups in all sizes. A DH priority / heavy rider layup. Enduro priority / lighter rider layup. 

Just think of all the combinations you could do. Lighter rider layup front end / heavy rider chainstays and thin seatstays. Allow ridres to purchas all the different parts ala carte. 

2
1
Finkill
Posts
234
Joined
9/2/2015
Location
GB
5/22/2025 2:41pm
The cover is officially off, Orbea's new Rallon DH and Enduro bike is live - https://www.vitalmtb.com/features/first-ride-revealing-rallon-orbeas-dual-purpose-enduro-and-downhill-machine Rallon Highlights- Carbon front & rear triangle //...

The cover is officially off, Orbea's new Rallon DH and Enduro bike is live - https://www.vitalmtb.com/features/first-ride-revealing-rallon-orbeas-dual-purpose-enduro-and-downhill-machine 

OrbeaRallonDHEnduroReview

Rallon Highlights

- Carbon front & rear triangle // alloy rocker and lower link
- Enduro - mixed wheels or 29-inch // DH - mixed wheels only
- Linkage-driven single pivot design with Orbea's Concentric Boost rear axle pivot

Travel:
- DH - 200mm rear wheel travel // 200mm fork
- Enduro - 170mm rear wheel travel // 180mm fork

- Progressive and linear leverage rate adjustment
- High and low geometry flip chip (enduro models)
- 442mm or 450mm chain stay length
- +/- .75-degree head angle adjustment
- Internal frame storage and water bottle mount
- Optional weights can be added to the lower link (up to 583g DH/550g enduro)
- 148mm boost rear spacing
- Sizes: S-XL
- Enduro builds: E10 - $5,699 // E-TEAM - $7,199 // E-LTD - $9,999
- DH build: D-LTD - $8,299
- Weight (size XL, weights installed): E-LTD - 36.3 lbs (16.5 kg) // D-LTD - 37.1 lbs (16.85 kg) 

I haven't seen a product launch with such a positive reception in quite a while. Impressive. However, I have the same concern I always have with travel...

I haven't seen a product launch with such a positive reception in quite a while. Impressive. 

However, I have the same concern I always have with travel adjustment frames- tuned stiffness. 

If you change the axle to crown on your fork, change your rear travel, even adjust your chainstay length, you are changing the stiffness/compliance of the frame. In this case the increase to a DH fork isn't that big a deal- normally a longer axle to crown will make the bike flex more, but dual crown forks have shorter axle to crown lengths so going from 180 single crown to 200 dual crown is a very little (if any) change. 

More on the stiffness/compliance front, beyond just travel adjustments, for Enduro racing and riding in general, you want a more compliant ride (riding longer, less practiced trails with less travel and more fatigued) while with DH you want precision (riding shorter, fewer courses that you can practice a lot more). 

Thoughts? Or is all this moot since few companies even bother to tune their various frame size stiffness differently?

earleb wrote:
Gotta save something for the 2026-27 frame update. They could do new molds with thinner diameter seatstays or chainstays. Offer the front end in two different layups...

Gotta save something for the 2026-27 frame update. 

They could do new molds with thinner diameter seatstays or chainstays. Offer the front end in two different layups in all sizes. A DH priority / heavy rider layup. Enduro priority / lighter rider layup. 

Just think of all the combinations you could do. Lighter rider layup front end / heavy rider chainstays and thin seatstays. Allow ridres to purchas all the different parts ala carte. 

Make a modular frame to reduce SKUs, then make loads of variants of it to increase SKUs. Smart plan. 

24
1
Kusa
Posts
281
Joined
6/25/2010
Location
CH
5/22/2025 4:57pm

That Rallon is specced with the unreleased XTR M9220 brakes as well.

The lower model also shows new XT brakes M8220. 

Kusa
Posts
281
Joined
6/25/2010
Location
CH
5/22/2025 5:06pm

Also Orbea site is showing "new Saint" for the DH bike but it seems the images are with the current version.

image 329.png?VersionId=DgXZdakdL7hX wyUqaenroxb6V

8
5/22/2025 5:10pm
Talking about weights, I just ran some numbers from a test I did with and without BB weights. Same trail, no changes besides 1000g on bb. Using...

Talking about weights, I just ran some numbers from a test I did with and without BB weights. 
Same trail, no changes besides 1000g on bb. Using Syn data and 6 axis IMU on axles and BB recording 2000 times per second.

1. Rear Axle vertical Acceleration with weight 

Positive Acceleration: Decreased by ~1.93%

Negative Acceleration: Decreased by ~3.18%

2. BB frame vertical Acceleration with weight

Positive Acceleration: Decreased by ~0.54%

Negative Acceleration: Decreased by ~5.48%
 

Yes there’s always negatives to adding weight, but just giving an idea of what I found.

IMG 6554

What, if any suspension adjustments did you make?

No changes were made between runs, Just BB weight on or off. Back to back run. It's like high level overview type of data ya know.   I'll dig in more now that bike park season is starting.  I just thought it was fitting with the Orbea bike release, to drop some quick insights to what I found last week.

Blake_Motley
Posts
188
Joined
11/14/2013
Location
Chula Vista, CA US
5/22/2025 5:29pm

That bike is beautiful, huge step up from the previous designs. Hope they make a Rise with this silhouette.

badIuck wrote:
Unfortunately not possible. Since the motor is in the way, the shock position and therefor the toptube will always be much higher on an e bike...

Unfortunately not possible. Since the motor is in the way, the shock position and therefor the toptube will always be much higher on an e bike with the shock standing on front of the seat tube.

The shock is pretty far ahead of the BB and motors are starting to get pretty small. A TQ might fit as is. You’d have to change the shock access though 

2supple
Posts
99
Joined
1/23/2022
Location
Denver, CO US
5/22/2025 9:04pm
Finkill wrote:

Make a modular frame to reduce SKUs, then make loads of variants of it to increase SKUs. Smart plan. 

Saves money in a lot of ways, especially molds. So yeah, kinda smart. 

5
seanfisseli
Posts
573
Joined
4/16/2024
Location
Santa Cruz, CA US
5/22/2025 10:49pm
Finkill wrote:

Make a modular frame to reduce SKUs, then make loads of variants of it to increase SKUs. Smart plan. 

2supple wrote:

Saves money in a lot of ways, especially molds. So yeah, kinda smart. 

Yeah not all skus are created equal. 

1
monarchmason
Posts
300
Joined
5/24/2022
Location
Nevada City, CA US
5/22/2025 10:59pm
Talking about weights, I just ran some numbers from a test I did with and without BB weights. Same trail, no changes besides 1000g on bb. Using...

Talking about weights, I just ran some numbers from a test I did with and without BB weights. 
Same trail, no changes besides 1000g on bb. Using Syn data and 6 axis IMU on axles and BB recording 2000 times per second.

1. Rear Axle vertical Acceleration with weight 

Positive Acceleration: Decreased by ~1.93%

Negative Acceleration: Decreased by ~3.18%

2. BB frame vertical Acceleration with weight

Positive Acceleration: Decreased by ~0.54%

Negative Acceleration: Decreased by ~5.48%
 

Yes there’s always negatives to adding weight, but just giving an idea of what I found.

IMG 6554

Im sorry can you define what direction positive and negative refer to. I dont know why Im taking it both ways. 

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