ryobi friction drive

[bikerdude0269]

That polyurethane roller had been tried on BMP friction drive kits and then discontinued. It had a bad habit of premature wear so you're long term cost on them will be higher. I forgot you wanted to go the cheapest route so a bike peg spindle should work fine for you. That little Ryobi should get you going at least 20-25 MPH stock with the right spindle size. If you can get a hold of a Goped black diamond spindle I'd recommend you buy it. I got mine for $15 shipped and that darn thing is well worth it. Faster take off speeds and you can ride on wet streets. Keep us posted and good luck on your build.

k i will keep my out for one. were did ya order urs from?

 

[cpuaid]

There was a guy selling them on ebay but it looks like he's sold out. It was $13.50 shipped. The title of his posting was "Goped Sport,Goped Bigfoot, Black Diamond Type Spindle". gopeddepot up in florida has them from $20 - $25 + shipping depending on the size. It's the black magic type. Hope this helps!

 

[bigkahuna]

I've got a 29" wheel cruiser ( http://www.walmart.com/ip/Genesis-Onyx-29-Cruiser-Bicycle/16203481 ) that I want to motorize. I originally considered an in frame build but after reading all the threads about broken this and that I'm thinking about a rear friction drive instead. I hope you don't mind but I've got a couple questions: First, what kits do you recommend I look at (since I've got 29" wheels) and second, do any of the kits have the motor centered above the wheel rather than off to the side? Thanks!

 

[bikerdude0269]

There was a guy selling them on ebay but it looks like he's sold out. It was $13.50 shipped. The title of his posting was "Goped Sport,Goped Bigfoot, Black Diamond Type Spindle". gopeddepot up in florida has them from $20 - $25 + shipping depending on the size. It's the black magic type. Hope this helps!

yes helps lots point me in the right direction. thanks

 

[rawly old]

Bikerdude,
The problem I see with that mount on that bike is heel strike if
you need to pedal... of course I have size 14 feet. A properly
broken in ryobi is actually a pretty reliable engine, but with 31cc's,
I think you're gonna have power issues unless you're built like a
jockey and live in Kansas.

 

[rawly old]

Big Kahuna,
If you're looking for a drive centered over the wheel, you
may have to build it yourself. I know the Russians and a couple
other eastern European countrys make such kits, but there's
a snoball's chance in **** of importing one. Still, if you hunt thru
the foreign videos there's a wealth of configurations out there
for ideas, some really cool stuff.

 

[wheelbender6]

I think a chopper like that is a good choice for friction drive with that fat rear tire, but I have no friction drive experience. I had been looking for this post. When I first saw it, I was on my smart phone and didn't remember that it had Ryobi in the title.

 

[SimpleSimon]

Here ya go, two speeds shift-on-the-fly friction drive

The engine mounts to the top plate, the ears hold the pivot pin for the U channel, the blue cylinder represents a spring to push the front end down and press the front roller to the tire, or compreesed by the cable, lifting the front roller and pressing the back roller to the tire.

 

[bigkahuna]

Big Kahuna,
If you're looking for a drive centered over the wheel, you
may have to build it yourself...

Thanks. I decided that wasn't going to happen so am looking at getting the lightest weight per highest shaft power I can find. At the moment I'm looking at DAX's 6.5 lbs 47cc motor. It's so small and lightweight, that I doubt I'll even notice that it's not centered on the bike. I plan on using a tear drop gas tank so all the weight isn't above the rear wheel but is still higher than the motor for gravity feed.

 

[cpuaid]

bigkahuna.... I've been eyeballing that same little Dax 6.5 lb. engine. Keep us posted on how well it performs. My only concern was on the sound level. Chinese 2-strokes are notorious for being much louder than their Japanese counterpart in the stock configuration. Good luck on your build.