Mounting question for rack

D_Station

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Hey, so im working on a bike, and im gonna do a chain drive. I want to mount the motor on a rack, and i was wondering how you guys effectively attach the motor so that it stays still. I don't want to put the motor on just to have the torque twist it off the rack or anything. Thanks for the help.
D Station
 
I'm presuming Staton's mount is notched to fit over the axles, similar to the GEBE set up?

If it is, these are the basic steps I do to attach the mount to the frame.

There are (2) 5 mm. holes over each axle slot. I attach a 2 1/2" pc. of steel above the axle slot, and drill a 3/8" hole through the steel pieces.

Then you will have to cut the ends off the motor/axle mount.

First you will have to establish the distance between the axle and the bottom of the mount. I have a threaded rod with 4 wingnuts I slip in the axle slot, but first time I simply tied a golf club in that slot, to serve as the "axle".

Then you put the mount over the "psuedo-axle", measure the distance in millimeters, axle to bottom of mount.

Cut the excess, clamp the mount to the steel piece, to drill the 3/8" hole, and whoola, the mount is now part of the bike
 

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I'm presuming Staton's mount is notched to fit over the axles, similar to the GEBE set up?

Staton's frictiond AND chain drive mounta are not notched to fit over the axles. Basically they connect to the dropouts as you've done yours.:geek:
 
Hey, so im working on a bike, and im gonna do a chain drive. I want to mount the motor on a rack, and i was wondering how you guys effectively attach the motor so that it stays still. I don't want to put the motor on just to have the torque twist it off the rack or anything. Thanks for the help.
D Station

:unsure:Follow D. Staton the vendor kit guru.


He uses a hinged U-bracket up front, a support strut to brace that mount and a rear support strut to lock down the rear of the gearbox.
:geek:
 
and ill make sure to make my questions more specific next time. Thanks so much for the help i really appreciate this forum alot
 
Looking at the picture, I'd still put two legs on it, and extend it down to the two dropouts above the axle slot.

Having the engine supported only off the seat post would be unique, that's for sure.
 
Hey, so im working on a bike, and im gonna do a chain drive. I want to mount the motor on a rack, and i was wondering how you guys effectively attach the motor so that it stays still. I don't want to put the motor on just to have the torque twist it off the rack or anything. Thanks for the help.
D Station

JMO but weedwhacker engine would not be effective with chain drive.:whistle:

You will probably be needing 19:1 or higher (numerically) gear ratios. If you were to put a 10-tooth sprocket on the engine, you'd need a 190-tooth sprocket on the rear wheel.

Unless you use a jackshaft. Then 10-tooth on engine and a 44-tooth on jackshaft. At the other end of the jackshaft, place another 10-tooth sprocket. Then a 44-tooth sprocket mounts on the rear tire.

That combination will give you 19.36:1 gearing.

It's easier to use friction drive.:unsure:
 
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