How to get 150mm of suspension travel on Begode Master.
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- เผยแพร่เมื่อ 11 ก.ค. 2024
- Begode Master upgraded to 150mm suspension travel. Design and build video.
Timecodes:
00:00 - Intro and rant
02:13 - Intro to CAD model
02:34 - Why more travel?
03:56 - Modification to stanchions
05:10 - Modification to pedal hangers and chassis
05:56 - Suspension linkage and assembly review
06:44 - Build summary
08:58 - Wrap up
Previous upgrade video:
• Begode Master suspensi...
CAD Solidworks 2019 and STEP files:
grabcad.com/eye.in.the.sky-1
Credits:
DNM RCP2S 240mm shock cad model - grabcad.com/library/dnm-bike-...
Begode Extreme teardown - • Begode Extreme. Разбираем - วิทยาศาสตร์และเทคโนโลยี
Amazing. I really hope #begode is taking notes here. 22" wheel with lightweight motor with 150-200mm suspension would be a dream!
100% agree. Lighter wheels please! This is the next big challenge. Nobody needs crazy voltage wheels with 180km/h free spin speeds. >80km/h is really a very bad idea unless you're on a race track. What we need is lighter wheels with bigger diameter and more suspension travel.
@@eyeinthesky3013 It should be possible to shave off a lot of weight in the motor, since they have 8 spokes that are very solid. 4 should be enough. The motor on my Abrams is 27 kg alone! Lighter motor means less unsprung weight and more agile wheel.
@JonahOnEUC I think most of the weight is in the steel stator and copper windings. The Master motor (C38), rim and tire (CST-186) weigh 14kg. I'm not sure that much weight can be saved without reducing the size of the stator and so loosing torque. Only way I can see that the rim tyre assemby can be much lighter is by using a belt/chain drive and a separate higher speed motor. I have designed and made one but it has issues. I need to improve it further but will release details once I get it working better.
@@eyeinthesky3013 We need an old broken motor we can split into pieces and see how the weight is distributed and where we can save.
I think the very first EUC ever used chain drive.
@@JonahOnEUC I believe that some weight can be saved. I think Veteran put some effort into weight reduction for the Lynx but I'm guessing it's only a marginal saving. My belt driven wheel has a 4kg rim with 2kg tire. It has 130mm suspension but the motor is attached to the main chassis so only 6kg unsprung mass. It is a very nimble wheel and it is very easy to hop it up big kerbs. On paper it has similar torque to the Master but it has a strange problem with the controller that means it cuts out sometimes when you hit a bump. 😂 I'll get it working soon hopefully
Thats a lot of work done. Respect!
Great work, man.
Delight device 'у такое и не снилось 😂
👍 Nice move!
Impressive job you've done sir! But even more impressive for me is your solidworks skills. I wish i could do the same in 3D modeling as have some ideas in my head but lacking of skills
Thank you. I'm a Mechanical Engineer so have been working with Solidworks for a long time. It's quite easy to learn but takes time to learn to be quick. I believe Fusion360 is a good option as it's free for hobbyists and is very capable.
Very interesting modification!
special thanks for sharing 👍
This looks amazing 👏 I currently run modified links and an electronically adjusted Monarch RT3. I am very interested in this setup. Would you ever consider selling the hardparts to try this kit on my Master? Thanks in advance for your time
Unfortunately it's not just a matter of suppling parts. Quite a few of the existing parts need to be modified as well (Stanchions and pedal hangers). As I have a day job I just wouldn't have enough time to modify/supply the parts. The best way to get the mods done if you don't have to tools to do it yourself would be if you can find a machine shop that you can share the CAD designs with so that they could perform the necessary modifications and fabrication of parts. Sorry, that's probably not what you wanted to hear. It's an enough easy modification if you're experienced with CAD and metalwork and have the appropriate tools though.
Do u have a video on ur rear light modification?
No but I'll have a look to see if I made a circuit diagram. If I can find it I'll post a short video on the mod
hows the pedal clips on compression. this might be a issue😊
In theory there is around 40mm clearance on full compression which is a bit close for comfort. I had a couple of contacts when landing really hard using the shock with the 550lb spring but not enough to come off. Since changing the spring to 750lb it's been fine.
Очень крутая работа.
Хочу себе рычаги по твоему проекту.
Ты продаешь чертежи?
All designs can be downloaded from the link in the description for free. Hope you can make use of them.
very cool and insightful video. thankyou.
From 70mm travel to 150mm travel, that is a good 90mm battery raise and Center Of Gravity increase.
Huge combinations of mods on this wheel.
100% agree the begode platform give plenty of opportunity for customizations.
keep the videos coming.
Thank you. Means a lot coming from a fellow 'Master' expert. Yes the COG is very high now. It's horribly unstable going fast on tarmac. I don't go over 60km/h otherwise wobbles can come suddenly and are very difficult to control. It's great for the mtb trails that I go though and probably help manoeuvrability if anything.
@@eyeinthesky3013 I suspected the stability would be bad.
I'm currently working on a low COG battery arrangement.
I also really like the way you dropped the inside of the pedal hangers, that mount to the poles on the inside. to allow for tyre tolerances. I've done the same. Came to the same conclusion it's not required.
@@eyeinthesky3013 looks like there is no way to somehow lower the COG on a high travel suspension and so reduce the wobbling. But what if we put a small GYRO connected to the euc motherboard. So the motherboard detects wobbling (at the entry level) using it's xyz accelerometer and controlling the GYRO to eliminate wobbling. That way we can have a hight suspension travel and completelly forget about wobbling but even more we can eliminate the trolley handle as wheel now can stay up right in all directions and even follow you? :D
I like your thinking, but i think the best/simplest option would be a larger diameter wheel for greater rotational inertial stability. Lowering the battery height will help too but is unlikely to provide as much stability as with a larger diameter wheel. The trick would be to do this without losing avaliable tractive force* as is the problem with the Monster Pro.
*Commonly miss named "torque" in euc chat. I.e. a bigger wheel diameter with the same motor will have the same torque but less tractive force available at the tire contact patch due to larger radius.
@@eyeinthesky3013 do you think the 22 inch wheel (like on Begode Master Pro) whould be a good choice for your begode master with 150mm suspension travel? in case if you'll have the same or even bigger tractive force as your master