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02-14-2012 #11MBc Member
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Haven't replied because I'm researching to see if the freewheel concept is worth the effort compared to constructing a jackshaft somehow on a dual suspension frame.
My sbp jackshaft may work with some modification in how it is secured to the frame since the ht motor wont be supporting it.
*Just give ideas to others who it may help, my plan was to use the staton axle mount assembly and instead run a chain forward to the left freewheel transferring power to the right side dereailer. This would allow the use of my otherwise limited use robin 35cc that is very reliable. Sounds crazy?
Last edited by mbatl; 02-14-2012 at 03:54 PM.
If you are still interested in this solution, we've virtually finished the design on a crank system that operates as you describe. You can see it at BikeMotive.com or youtube.com/bikemotive. We are now scouting around for economic production. Would enjoy hearing from you.
I know i'm going to regret asking this, but what would be the cost of the crank system as is ? If you haven't already i would get a patent on your design as quick as possible.
You need to think out side the box!!!!!!!!!!!!!!!! Grubee just needs to make a right side drive, clutch on the left. TA DAAAAAAAAA!!!!
How about putting a 135mm offset fork (Surly Pugsley/Moonlander) onto a bike or stretch a 100mm fork using some threaded rod w/nuts to 135mm & install a rear wheel into the front fork. Then drive the largest cassette sprocket (32 or 34) from a front rack (or DAX/BMP channel) mounted engine using a 5:1 pocket bike transmission w/10 tooth sprocket & some fixed gear chain (Sram PC-1). Keep the rear for pedaling & the front for motoring. When you let up on the gas the front wheel will freewheel, the clutch disengage, for better fuel economy & less clutch pad heat & wear.
I'm actually thinking about doing this since I got a 5:1 transmission recently (bonus w/engine purchase) & it seems to be a solid unit.
By willfargo in forum General DiscussionReplies: 3Last Post: 09-20-2011, 12:45 PM
[Jackshaft] DIY Jackshaft / Freewheel / Shift KitBy 210061741 in forum Transmission / DrivetrainReplies: 141Last Post: 05-05-2010, 05:59 PM
[Jackshaft] freewheel on a jackshaft? no clutch necessary?By nathanl in forum Transmission / DrivetrainReplies: 1Last Post: 10-26-2009, 08:00 AM
[Jackshaft] jackshaft kit through the bottom crankBy dirbob in forum Transmission / DrivetrainReplies: 11Last Post: 09-26-2009, 02:22 PM
By Alaskavan in forum Performance ModsReplies: 14Last Post: 01-31-2008, 11:19 AM