Porkchop
Member
O.K. I did a search and found a GP460. Looks and sounds like an awsome machine, and you're going to mount it on a friction drive kit from Bikemotorparts ? Is that not to much power and/or torque for most stock, store bicycles. Let alone how many tires, brakes and clutches you could run through in a week's time. I have the engine from Harbour Freight's auger that's mentioned on Bikemotorparts site. I've had it over a year and it's never had a drop of gasoline put in it. Still in the box ! I've got the Grubee 50 on the way. Still haven't decided which one I'm going to do first. but will probably end up doing one of each ! And I do remember seeing in my dream catalogs when I was probably pre-teens, somewhere like popular Mchanics, pretty much the same friction drive set up as what's on today's market. It had a tension spring that pulled the drive bar, or whatever you call it, down onto the wheel, and it had a handlebar lever you pulled to raise the drive bar up off the tire. I imagine you could use one of the clutch levers with the locking pin to do that. Would probably have to get a very strong tension spring and rig up a cam system on the lever kind of like a compound hunting bow to take a lot of the tension off your grip. Pull the lever, lock it in place to keep the friction off the tire, and there you go ! Of course you'd have to figure out a way to make a pivot point for the motor. And then again, the way there system is made it should already have one ! Personally, I think it would be an easy thing to do. I wish I was a machinist. I know my buddy is going to get tired of me and my project unless there's a way I can make him money off of it ! Anyway, that GP460 sounds like a funeral waiting to happen for someone that does not respet power and speed.