Go Back   EcoModder Forum > EcoModding > Motorcycles / Scooters
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-15-2017, 10:13 PM   #21 (permalink)
EcoModding Lurker
 
Join Date: Mar 2012
Location: syracuse,ny
Posts: 43
Thanks: 16
Thanked 6 Times in 6 Posts
If that's true, that's really awesome for the notched V-belt. The advantages sure would outweigh the roller chains.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-15-2017, 11:41 PM   #22 (permalink)
Master EcoModder
 
Join Date: Feb 2010
Location: Elmira, NY
Posts: 1,459
Thanks: 209
Thanked 238 Times in 201 Posts
It is likely cheaper to manufacture a sheave system than to cut a bunch of gear teeth.
  Reply With Quote
Old 10-16-2017, 01:23 AM   #23 (permalink)
Master EcoModder
 
Stubby79's Avatar
 
Join Date: Sep 2012
Location: Victoria, BC
Posts: 720

Topoff (RIP) - '92 Geo Metro LSi
90 day: 48.54 mpg (US)

'91 Miata - '91 Mazda Miata
90 day: 27.11 mpg (US)

'86 Fiero GT - '86 Pontiac Fiero GT

Purple Penny Pincher - '95 Pontiac Firefly Base
90 day: 43.68 mpg (US)

Jett-Black - '01 Volkswagen Jetta
90 day: 39.32 mpg (US)

Firefly EV - '98 Pontiac Firefly EV
90 day: 107.65 mpg (US)
Thanks: 35
Thanked 216 Times in 157 Posts
If you ask me (even though you didn't), the way to go would be to have a CVT for getting up to speed, and then be able to switch it in to a fixed gear once up to speed.

I also assume the reason belt driven CVTs are only 80% efficient is slippage, which is the main reason friction belts are less efficient than chains, and why a timing belt is not. The other losses come from flexing/compressing/decompressing the rubber.
__________________

  Reply With Quote
Old 10-17-2017, 11:38 PM   #24 (permalink)
Master EcoModder
 
Join Date: Feb 2010
Location: Elmira, NY
Posts: 1,459
Thanks: 209
Thanked 238 Times in 201 Posts
A dual belt system with a V belt over a timing belt and a timing sprocket at the drive and the base of the sheave. Hmmm
  Reply With Quote
Old 11-13-2017, 03:38 PM   #25 (permalink)
ASV
weirdo
 
ASV's Avatar
 
Join Date: Oct 2008
Location: PHX AZ
Posts: 58
Thanks: 5
Thanked 5 Times in 4 Posts
i believe the most common problems with the gy6 CVT are
the constant movement of the belt
(the clutch is on the wrong end)
and gearbox final drive
( each gear interaction cost a few percent efficiency)

I would move the clutch to the drive pulley like a comet.
A giant 17 inch serpentine pulley on the back wheel and a 2 inch
pulley on a real swing arm axle jackshaft
it would weigh less handle bumps better
and be more effective

  Reply With Quote
The Following User Says Thank You to ASV For This Useful Post:
Grant-53 (11-13-2017)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com