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Outside is ingenious, but I don't think it will work with the forbidden bikes because rear of the shock (and the rear shock bolt) goes so far internally on the frame.
I do like the idea of going under.
I think what you need is the 65mm travel sensor.
I can try to source the images of this sensor installed.
Cheers! Yeah it is quite an old sensor, but this is probably one of the tightest fitments ive encountered too. Once I get a chance to do a trial run with them I will send them over 👍
Very tidy - what brand is the logger on Loris' bike?
Looking at the pivot bolt mounts - I just ordered a few vented socket screws from Ali express which should hopefully be much easier to tap for attaching shock pots. They have M6, 8 and 10 bolts in various lengths so hopefully a lot better than drilling in a press or lathe.
Just note a lot of M10 shock bolts are actually an extra fine 1mm thread and all those are standard coarse threads so double check that first.
The fork pot is BYB. Could be old BYB in a custom printed box? Mondraker is on their own system, looks to be fully made in house and they have their own software I believe.
I got various length thin bolts and spacers, a drill bit and tap. I have a pretty easy set up at home with drill press, I can do shock bolts in about 10 minutes each. Do you have photos of the bolts you got?
It's a BYB Telemetry V3 Pro custom logger with x8 connectors and external/remote IMU.
I just did a friend's RM Altitude. We had to take the rear mud flaps off and then find the right rotation on the shock. I took both eyelets off also. It was a tight fit in the tunnel but with a could dry fit attempts we made it work.
Still waiting for them to show up, but I figure having an assortment of them in different lengths will make it a lot quicker to fit different bikes vs having plain bolts or tapping the customers original hardware
Can you check the dimensions between these bolts? Looks like its similar to the supernought but not quite the same
Hi guy's
I'd like to join the conversation too. I'm also in the process of creating my own DAQ system since the beginning of this year. The whole idea started because the whole story of Motion Instruments. I tried to reverse engineer the MI system to a certain degree and added my own twist to it. It currently supports just the suspension sensors, which are a linear potientiometer for the fork sensor and a magnetic rotary encoder for the rear. The whole idea of this project is to have a system that is somewhere between a shockwiz and the more advanced BYB and SYN bike devices. But as you get deeper into the whole topic and get a better understanding of everything, the sudden wish for more sensors appears ;-) So I'm currently thinking of adding GPS and brake sensors.
The whole system is based on a ESP32 microcontroller, that logs the data to a SD card. The ESP32 also provides a webserver, which runs the UI for setting everything up as well as the data analysis. File download is also possible and also with reasonable speeds because the downloading device is connected by WIFI.
The discussed issue with the mounting of the rear sensor is also a problem for me, even though I don't need to mount a linear sensor. I'm thinking of mounting the sensor to the seat tube and connect the rotating magnet to the rear triangle of the bike to measure the wheel travel. With this data I could do the reverse calculations I'm doing currently to get the shock travel by using the measured wheel travel + leverage curve. Maybe this could be possible too for you guys using the BYB system with the linar sensor?
cheers
Simon
Heck yeah, That is beautiful! So pumped on your project. This is why I wanted to get a thread started ! Keep us posted on updates and if you are looking to make public sales
I mesured from the shock bolt to the main bolt as 57 and the main bolt to the bottom chain-stay bolt as 61. It's probably the same to be honest...
This is very tidy looking. Great work. I love the idea of hosting the processing server right on the device itself.
Hey Simon! Sorry I didn't come back to our last email, I think I had a reply 90% done then got swamped a few months ago. I've had a few chats with people working on different loggers now but will work on participating here & the synbike discord instead.
Looking awesome though!
"The discussed issue with the mounting of the rear sensor is also a problem for me, even though I don't need to mount a linear sensor. I'm thinking of mounting the sensor to the seat tube and connect the rotating magnet to the rear triangle of the bike to measure the wheel travel. With this data I could do the reverse calculations I'm doing currently to get the shock travel by using the measured wheel travel + leverage curve. Maybe this could be possible too for you guys using the BYB system with the linar sensor?"
Interesting proposition but there wouldn't be a way to calibrate a rotating sensor to linear in BYB unless they added it. Also for the non pro system the raw data is 'locked' so it wouldn't be easy for the home user to pull the info and process it.
But maybe & hopefully I am wrong.
Hello @mattattostown ,
Yes I confirm that with the BYB Telemetry software, it's possible to use the reverse leverage calculation (using a linear sensor).
We're currently adding the integration for angle sensors too.
Best,
Enrico
This is huge! Would make dealing with my dreadnought much easier
Adding this from @Downamics Looks like this book will be a giant unlock for anyone looking to learn more about data acquisition
Thats def a must have book...
Thanks so much for sharing @carlinojoevideo
Anyone wishing to place a preorder can do so at www.datadrivendescents.com
I also have a great Patreon community where I post about videos and podcasts about how I use data at races and in product development, work if anyone's interested then feel to take a look
www.patreon.com/downamics
Some serious data acquisition!
I ordered my byb kit last week. This is my first data setup but I did use a shockwiz a few times. I am a little intimidated by the scope of this product but I do now have an ebike so I was hoping the learning curve would be sped up by being able to put in more laps easier. Should I just start with the auto tune function and try to figure out what its trying to achieve that way? What is the most common metric people are using from their data? Is it wheel speeds, dynamic sag, balance f/r, travel use f/r? I get that's its not just one piece of data but a completed package.
Does any one have a go to step by step process they use like start with spring rates, then try to get similar ride height/travel usage f/r then try to get similar velocity on rebound and compression f/r? Is there a target number you try hitting? I've read or heard some places that a lot of the byb units try to get you to run similar dynamic sag f/r so are you really running 30% in your fork?
Thank you for any help
Do you have any photos of how you have mounted on the dread?
@thegromit
I’ve found that the Auto Tune creates a too soft feel for me and my fox factory / performance elite cannot be opened up enough to achieve the rebound and compression settings suggested. Though I do want to get with my suspension servicing friends and try to shim and customize these forks and shocks to the Auto Tune.
Part of my self education I would adjust my clickers all the way one way and do a run. Turn the clicker all the way the other way and do a run. Compare the data results and what I felt. And then keep doing that front and rear.
Watch the BYB videos. Watch Downamics patreon videos. Check this case study Case Study: Jekyll DH Data Logging Setup - The Hub - Mountain Biking Forums / Message Boards - Vital MTB
I am not an expert but I play one on IG.
I start with spring rates. Set standard sag Fr 20% Rr 30% if we’re talking about DH / EN; 15 & 20 for XC. Use the manufacturer’s recommended settings or start with what is already there. Write it down. Take notes.
Review the average wheel travel, dynamic sag. I use wheel mm and %, not suspension. OK are you riding lower in the front or rear? By how much? And now why. If it’s a steep trail I tend to be further into the fork. If it’s a high braking area, this on data, looks like the fork is riding lower. Use the selector to choose your sections on the trail and sync the data to those sections. There’s little sync buttons.
Check rebound rates. Does your deeper suspension have a slower rebound rate? It could be packing up. Maybe speed it up. Maybe the higher suspension has too fast a rebound and is pushing the other way.
Maybe your spring rate is too low on the deep side or maybe too high on the other side.
Which feels better the fork or shock? Massage your tune towards favoring that.
Review Position Distribution to see if your fork and shock are generally overlapping. Is one further left than the other? To move right make it softer/slower. To move left make it firmer/faster.
Review Velocity Distribution. Use the clickers to adjust the speed. Spring rate will change these too.
Volume spacers tend to create a narrower more peaky velocity distribution.
Oh check out the bottom out and make sure you’re not hitting it often or ever.
Review your Avg compression and Avg rebound speed front and rear. Get those close to the same balancing the spring rates and clickers.
Final Avg sag or dynamic sag depends on the rider and the terrain. More advanced riders and racers tend to like 25% or less but 30% feels nice. If you have to pedal around like an enduro rider or all mountain you have to balance the DH feel to also getting from stage to stage or in between the fun stuff.
I’ve probably missed something in these steps or do it in a different order, but for the most part its spring rate > rebound > compression. And what makes the rider more confident and comfortable not what an auto tune says. Though try the auto tune you might be surprised or take some ideas away from it. I do like to check the auto tune with each correction just for fun.
Oh I also like to find a set of jumps and zoom into that selected area so I can check the rebound to full extension and the compression to see that fork and shock curves look similar.
Check out the Downamics Patreon. He’s got videos of step by step on there. You will have to watch a few times to get your flow. Also BYB has great videos on YouTube.
For me, this is my workflow;
Run 1- Warm up / test system and function
Run 2 - Dynamic sag
Repeat as many runs to get that how you want. Say 25%28%
Run 3 - compression/reb speed balence
Repeat as many runs to get that how you want.
It’s going to take time, don’t get overwhelmed, just learn as you go and it becomes addicting. Try to find a 60-90second trail to test on. Something that has a little of everything. Come back here if you have more questions!
@thegromit Many thanks for your order!
We have a training course available here: https://bybtech.it/store/product/byb-telemetry-training-course
Or, a software introduction here: https://www.youtube.com/watch?v=mRd_am4b3uY and https://www.youtube.com/watch?v=RrZzv7NWB5Q and https://www.youtube.com/watch?v=E_F1wZzgI1A&t=1s
8 500lb pull magnets. Wonder how the small-bump performance compares to even the most plush dampers haha.
Well add in latest model Santa Cruz 5010 with DVO Topaz as a rig that BYB doesn't fit. That tunnel is toight. I really need to put together some of those pivot bolts with "nuts" on the outside like the pro teams have. Some tack weld or JB weld aught to do it right?
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