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Deleted Member 4613
Guest
Your bike is nice, but this "ultimate concept" uses a CVT, a real transmission, like a snowmobile or moped with the weight of the engine and tranny balanced over the rear wheel.
sparky
Active Member
I have zero issues with balance. The 20" wheels & generally low frame help with that, too, I'm sure. But balance is not a concern whatsoever for the weakest of females.
The extra weight and cost of the CVT seems unattractive if you don't have it geared for a faster top speed. If you want to accelerate faster, then use the pedals.
The extra weight and cost of the CVT seems unattractive if you don't have it geared for a faster top speed. If you want to accelerate faster, then use the pedals.
Happy Valley
Active Member
Looks good Mike! I think above all you'll really like that engine. Curious if you did did any of the preemptive component upgrades, bearings etc. on the CVT we discussed?
Ya know, 'ultimate' usually means end of the line but there is another level........run the power from the CVT through the rear cassette cluster, lol devilish gear ratios.
Ya know, 'ultimate' usually means end of the line but there is another level........run the power from the CVT through the rear cassette cluster, lol
devilish gear ratios.Attachments
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sparky
Active Member
WOW!!!
I'd like to see a video of a couple of these CVTs zipping around.
I'd like to see a video of a couple of these CVTs zipping around.
D
Deleted Member 4613
Guest
To Sparky: For a folding bike with 20 inch wheels, your setup is probably fine, if you don't mind a pedal start, but for bigger bikes and higher top speed, a cvt is the ultimate, especially with a 54T rear sprocket and a 26 inch wheel. It's all in how you gear it. The CVT I used is really light, and probably would add no more than 2-3 lbs to your present gearbox, and the bike would be better balanced. I have not made any changes to the CVT. It seems to perform fine as stock. I noticed that several who made changes, were not satisfied, and went back to the stock setup. I really like the acceleration from a stand-still with a cvt. It's neat. I would not have interest in running the power through a rear cassette - too complicated. I like the automatic motorscooter setup. Totally automatic.
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Deleted Member 4613
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Watch this video to see what a CVT can do with a more powerful engine:
http://www.youtube.com/user/capturedbyrobot#p/u/36/qD8ueNQGKFw
I'd like to see someone put this power system on a bike: GSR40/X2 CVT. Wow!
Another Vid: http://www.youtube.com/user/capturedbyrobot#p/u/2/aO2pzaxpaDo
http://www.youtube.com/user/capturedbyrobot#p/u/36/qD8ueNQGKFw
I'd like to see someone put this power system on a bike: GSR40/X2 CVT. Wow!
Another Vid: http://www.youtube.com/user/capturedbyrobot#p/u/2/aO2pzaxpaDo
sparky
Active Member
Forgot to ask...
Where'd you get those shims, that go on the inside of the inner sprocket??
Or maybe that was TREEWK's album I'd seen? Same difference...
Where'd you get those shims, that go on the inside of the inner sprocket??
Or maybe that was TREEWK's album I'd seen? Same difference...
D
Deleted Member 4613
Guest
Follow Trewks posts for shims, which come from McMaster Carr.
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Deleted Member 4613
Guest
I design my own racks. It can't be bought. It's an engineering challenge, to make
it strong enough and light enough for this application.
it strong enough and light enough for this application.
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