weedeater bicycle engine

deacon · #1 (**permalink**) 03-29-2008, 04:54 PM

does anyone know where I can find a set of directions to build a friction drive setup on a weedeater engine conversion

deacon · #2 (**permalink**) 03-29-2008, 05:37 PM

looked at one on google but it's way hard to build. Looking for something simple, I'm a simple guy.

Easy Rider · #3 (**permalink**) 03-30-2008, 11:31 PM

It's really not that hard to build one. I know you could make a spindle drive with a clutch. There was one bike at the last race that had that set-up. Check out DDM. I'm sure they have the set up. I'll look around and see what I can dig up.

Easy Rider · #4 (**permalink**) 03-30-2008, 11:36 PM

Here you go Deacon. Go to the Goped HP parts and type in "clutch" in the search area. Hope this helps and don't forget to post pics of your progress.

Goped and Pocketbike Discount Sales - Dave's Discount Motors - Great prices and top-notch service!

deacon · #5 (**permalink**) 03-31-2008, 04:56 AM

Oh man I didn't think I would ever see those drive wheels again thanks a lot. I bought one on ebay once and never say any again. I appreciate that site I will slip around on it later.

I'm sure there will be plenty said and asked about this project. I bought an engine last night on ebay.

Ryobi 31 cc weed wacker engine - eBay (item 220216179314 end time Mar-30-08 19:59:27 PDT)

I figured out from the picture and the picture of one that was complete that the fuel tank is missing. It would have been nice if I had known that BEFORE i bid on it. I think I have one around here but It i probably shaped wrong. Sitll Im most likely going to remove the case anyway. I can probably make it work.

**Bikeguy Joe** · #6 (**permalink**) 03-31-2008, 04:21 PM

There is no wrong shape for a fuel tank, just make sure you have enough fuel line.

deacon · #7 (**permalink**) 03-31-2008, 04:32 PM

Okay now down to the nitty and gritty... it looks as though several things are missing(of course)

no centrifical clutch so here is my question for you guys. If worst comes to worst, Does this sound reasonable...

1. I can lift the engine and start it. Let it warm up till the choke is off, then i can kill it with the kill switch.

2. hook the engine down with the spring while it in NOT running.

3. pedal off and set the accelerator then throw the kill switch which should start the engine and off I go.

4. When I need to stop throttle down then at the point where I would throw the clutch, activate the kill switch. Engine dies and I have a little bit of drag to help stop the bike.

5. When I pull away throw the kill switch and the bike should drag start.

I might also rig a cable to the choke so I don't have to pull start the engine at all.

**Bikeguy Joe** · #8 (**permalink**) 04-01-2008, 06:09 AM

I'd just pull start it, then pedal off and let the clutch out.

Or...do what you outlined, as either would work.

deacon · #9 (**permalink**) 04-01-2008, 12:38 PM

It doesn't look as thought he centrifical clutch is still attached to the motor. If it is I probably will try to fix the pull starter. If it isn't there I might not even bother to fix the pull starter.