First Build friction drive

Elmo, I Have Friction Drives, They All Are Centrifical Clutch Set Ups. I Was Thinking About Your Roller Set Up. With Mike And The Lathe, You Are In Good Shape. But On "staton-inc" Under Their Friction Drive Kits, About Page 2 Or Three The Have Drive Rollers Of Different Size. They Are Solid, No Center Hole. Mike Could Modify Them To Attach To Your Engine. Maybe Even Rig A Support Bearing Or Bushing On The Other Side. That Would Make It Bullit Proof And Take The Strain Off Your Flywheel Etc. Just A Thought. Your Motor Mount With The Crank Arms And Bottom Bracket Is About The Slickest, Strongest, Cheapest I Have Seen! Great Improvising. Ron

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Another Thought, Is Your Spring Pulling The Roller At Least 1/8" Into The Tire? The Tire Should Be Aired Up Fairly Hard. Just Trying To Help. Ron

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PUMP YOUR BRAKES
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Thanks for the good words Ron. I may have the tire too hard (80 psi). Thats the way I always rode, the harder the tire the easier it is to pedal. The tire is rated for 85 psi. Guess I will have to learn some new ways because motor assist is some different than human power only. I have some things to try to make the roller have more friction. I do not think that I had quite enough pressure on the wheel as you said, my spring is not quite strong enough. BTY mike couldn't find his knurling this morning, his tools were kinda messed up because he had just gotten another lathe and alot more stuff. I really appreciate your advice.
Elmo (not the red furry one)

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All times wasted wots not spent ridin

Well I am down for a while. The flywheel nut got loose somehow and it is toast. I think I know where there are a couple of engines like mine that may have salvage parts.
Elmo

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All times wasted wots not spent ridin

Elmo, I `ve Been By The Mailbox Waiting To Wave At You As You Spead Past!! Lol.. Bummer!! Do You Think Your Roller Needed A Washer Of Spacer Under It To Hold The Flywheel Against The Taper On The Crankshaft?? That Just Does Not Seem Right. Keep Us Posted, Please. That Is Such A Solid Set Up. You May Not Be Furry, But You Must Be Red Now!! "git Er Done" Later Buddy Ron .

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PUMP YOUR BRAKES
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Ron
The threads in the pipe cap were not strong enough and pulled out. I can put on a grade 8 nut or use a stainless cap that mike had. The good news that I have 4 more 30 CC homelite weedeaters that I was given. One seems to have real good compression. I should be able to at least come up with one good engine out of the whole bunch.
Elmo

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All times wasted wots not spent ridin

Elmo, 4 Free Wacker Motors!! You Are Living Rite. I Could Only Fined Two For You On Ebay, And That Covers The World. Lol. "it Won`t Be Long Now" Ron

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PUMP YOUR BRAKES
NEVER BEAT ON IT, GET A BIGGER HAMMER

Well out of those four engines i finally was able to get 1 good running motor together. It took a lot of swapping parts and trial and error. Mike is going to bring the bike Friday so I can get back to working on it.
Elmo

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All times wasted wots not spent ridin

Elmo,
Keep up the good work. We (ZipCycle) used the 25cc Homelite engines on over 2,000 friction-drive bikes and found the engines to be very reliable. We recommended a rear tire pressure of 45 lbs (26X2.125 tire). And Neat Times is correct, make sure you are pressing the roller at leat 1/8" into the tire. With a polyurethane roller (ex-skateboard) we were able to ride in the rain (but not through deep water). Tom Bartlett

Tom, Great To Hear You Are From "zipcycle", A Connected Person. I Have One. Have Not Got It Running Yet. The Drive Roller Was Wore Almost Square, I Suppose They Let It Rub On Tire When Motor Was Not Turning Over. A Nice Set Up. This One Has 334 Miles On The Speedo. I Converted The Jack Shaft To Half Inch And Have A 2" Drive Roller, I Think The Original Roller Was More Like 2 1/2" Dia. Now Bmp Has A 2 1/2" Drive Roller. I Will Post Pics. I Have The Motor Covers Off, So It Is Not Looking As Good As Possible. I Think Its Missing The Left Side Motor Cover. Have Had The Covers Off Over A Year. Zipcycle Web Site Was Still Working, A Month Or So Ago. Tom, I Think Its Cool You Joined The Forum. Hoping To Hear More From You. Ron

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__________________
PUMP YOUR BRAKES
NEVER BEAT ON IT, GET A BIGGER HAMMER