using what ya got,friction drive

Discussion in 'DIY Home Built Motorized Bicycle (non kit)' started by scratchbuilder, Sep 30, 2016.

  1. scratchbuilder

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    Well, I got lil H142 sitting driving nothing. Been trying to come up with an in frame FD without spending$. Came up with idea after idea, then this hit. I needed a wide roller to align with engine w/o a Js. So far this seems good. The freewheel slips on snug to the headtube. Give it a couple tack welds. Figure a way of mounting with hinge. Could be wrong, but I'm thinking I can lift the roller just enough to clear tire, even though its chain driven. Put a stop so I don't over lift..?? Like 'five alive' said, "need input"...
     

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    #1 scratchbuilder, Sep 30, 2016
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  2. Ludwig II

    Ludwig II Well-Known Member

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    Before you go charging off, I have been given some information which may be relevant to you.


    A Scottish FD owner has a Terrot Lutin, which uses FD. This runs a Peugeot 2 stroke unit with a chain or belt drive casing and 3:1 reduction, to allow the use of a large diameter roller, which is much less likely to slip if it rains or you find a wet road.

    This is the sort of thing

    [​IMG]

    [​IMG]

    Your general arrangement has history, this is a SICAM, ancestor of Mobylettes

    [​IMG]
     
    #2 Ludwig II, Sep 30, 2016
    Last edited: Sep 30, 2016
  3. scratchbuilder

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    I've heard "there is nothing new under the sun" those are kool. The bottom one looks like the guy got a bike, an engine and umm... I can do this instead of that. I'm on that one way track now. Thank you
     
  4. scratchbuilder

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    Question, to FD calculators ..what will be the speed of this set up, 16t to 16t to 1 1/2 roller? The mt clutch bell had wobble is why its being sacrificed.
     

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    #4 scratchbuilder, Oct 3, 2016
    Last edited: Oct 5, 2016
  5. Ludwig II

    Ludwig II Well-Known Member

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    How many rpm will you have?
     
  6. Ludwig II

    Ludwig II Well-Known Member

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    1,000rpm x 1.5" dia = 392 feet/minute if that helps.
     
  7. scratchbuilder

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    Ok, thanks. Not sure if I'm gonna continue with this. W/o a Js, engine has to be offset too much for my like'n.
     
  8. Ludwig II

    Ludwig II Well-Known Member

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    Have you looked at Cannonball2's 90 degree turn belt drive? The engine sits lengthways and still drives a roller on the back tyre.
     
  9. scratchbuilder

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    Hey L2, got schooled by WayneZ and his 'in frame pred. FD. I'm only using my phone for my stuff, and it limits my search to one page, I'm sure when I searched for in frame FD, his was in there. I now remember visiting that post before...maybe my inspiration. Sooo, bigger roller. Do you know if epoxied tire will stay stay on the metal roller. Cannonball2's threads on FD is what got me going in this. Of course I'll continue, when I'm stymied, just come here and ask, search and receive your answers! Thxxx
     
    #9 scratchbuilder, Oct 5, 2016
    Last edited: Oct 5, 2016
  10. Ludwig II

    Ludwig II Well-Known Member

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    I have no experience of FD and materials. I think a grit epoxied to a rigid roller will stay in place better than matching a flexible surface to a rigid one, but that's without any hands on knowledge.
     
  11. scratchbuilder

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    Yeah L2, my experience with e poxy is with holdin parts together That don't move! Excellent stuff for that use. I'll grid off the inside of the tire, rather, scuff it up, and try it...ill be using epoxy for doin copper pipes. Here's my hinge plate, so I can put a thumb screw as Wayne z did. Oh yeah, I have relocate my brake. The frame is 26". I have a set of 24 wheels, not being used sooo, I also like to stop and have both feet on the ground. I'll make a new bracket and bolt it together with the kick stand bolt.
     

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    #11 scratchbuilder, Oct 5, 2016
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  12. scratchbuilder

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    Didn't have the e poxy I wanted, soo, jb weld. We'll soon find if it works. The hinged plate welded in place with head tube roller. Butt... I forgot to grease the bearings. Now I'll have to cut the left side holder in half, which was what I intended....but forgot. Then I'll plate bolt it back together. So I can remove the roller.
     

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    #12 scratchbuilder, Oct 6, 2016
    Last edited: Oct 6, 2016
  13. scratchbuilder

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    Wellll, I put another layer of tire around the roller, much better, just one of those putt around bikes. The idea worked.
     
  14. MEASURE TWICE

    MEASURE TWICE Active Member

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    Marine caulking I used once is not very flexible, just slightly flexible, but it is solid and had to be cut away with a knife and chisel. When attached to wood and I tried to remove it, it split soft redwood. It is resistant to oil and gasoline etc. Just a thought.

    I like how it is starting out! I've never built friction drive, but have interest in seeing it done.
     
  15. scratchbuilder

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    &&boredom over took him,and he began to build&&. It all worked, just to slowwww. Sits in the corner now...
     
  16. Ludwig II

    Ludwig II Well-Known Member

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    Pictures of the static artwork?
     
  17. scratchbuilder

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    It's all apart now. Just the frame sits in the corner.
     

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    #17 scratchbuilder, Nov 16, 2016
    Last edited: Nov 16, 2016
  18. scratchbuilder

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    At the swap meet today and found this for 2$...3" solid rubber 1/2" hole...maybe press 5/8 Js though it. Shape it to contour of the tire.. What an outlet for the creative genius in each of us here. When I first signed on I thought, "why do these guys have so many builds...... now I know...lol...ive got 2 run- about, totally fun. One in pieces crying "what about me"..one on the table being created..and now I find this drive roller...its madness I tell ya..lol
     

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    #18 scratchbuilder, Mar 3, 2017
    Last edited: Mar 3, 2017

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