my new weedeater bike project

Discussion in 'Introduce Yourself' started by nathandance1996, Dec 27, 2010.

  1. nathandance1996

    nathandance1996 New Member

    hi i live in Bognor Regis, England and i am planning on using an old mcolluch strimmer to power my bike, im going to mount it horizontally on one of those mountain bike panniers (the ones that clamp to the seatpost) so i can switch it from bike to bike easily. I'm trying this approach as none of my vertical mounted engines have had success due to stress on the engine.
     

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  2. PatrickW

    PatrickW Staff Member

    Welcome to MBc, Nathan. If I may: Is a "strimmer" something similar to a "weedeater?" Also, I noticed in your drawing (which is quite nicely done, btw) that unless there is some way to reverse the direction of your drive shaft, it would constantly run in reverse...or do motors where you are come with drive shafts that run clockwise instead of anti-clockwise?

    Last thing...I think your idea to run it horizontal is the much better way to go. I have never seen a friction drive run right with the engine vertical...it tends to run the wheel off at an angle, among other nasty things. I have a feeling that you will do quite well. Good Luck.
     
  3. professor

    professor Active Member

    Hi Nathan, welcome to Motoredbikes. This idea of mounting the drive roller on the side of the tire has come up before. The big problem is the roller will scrub as it rotates. If you place the roller like Patrick said that is a non issue.

    By the way, has anyone figured out what is causing the cold weather in the UK.
    Almost as bad as here.
     
  4. wheelbender6

    wheelbender6 Well-Known Member

    Good idea. I have been doing some sketches for a rim drive. Maybe one day I'll figure it out.
     
  5. ibdennyak

    ibdennyak Guest

    If I am understanding this correctly, one thing to keep in mind is that you will probably have to place an idler of some kind on the opposite side of the tire creating a pinch effect.
     
  6. nathandance1996

    nathandance1996 New Member

    a strimmer is the British English word for a weedeater / weedwhacker, and the engine direction doesn't matter as you can take the pannier rack of and have the roller on the other wheel side. i am using a pannier rack that clamps on to the seatpost and am just using the tension of the pannier rack, maybe add a tensioning roller on the other side, but it seems sturdy enough as it is. the pannier rack in question
    (http://www.halfords.com/webapp/wcs/...er-_-Product_List_Zone_1-_-Blank&iozone=PLPz1)
     

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  7. nathandance1996

    nathandance1996 New Member

    I've tried rim drive before but i wouldn't advise is if you have v-brakes or calipers etc, as when I tried that the rubber worn down a ruined the rims, and it's very difficult to remove all the rubber from your rims, and it can ruin your brake pads
     
  8. wheelbender6

    wheelbender6 Well-Known Member

    There is a site in France that sells rim drive kits but they are not very powerful, probably because of the reason you mentioned.
     
  9. nathandance1996

    nathandance1996 New Member

    do you know the sites name, I might have a look at those
     
  10. wheelbender6

    wheelbender6 Well-Known Member

  11. PatrickW

    PatrickW Staff Member

    Slightly off the topic, Nathan, but your drawings seem to be "done by hand." That is, with ruler and triangles rather than a CAD program. If so, you are a very talented young man. I expect to see great things from you in the future.
     
  12. nathandance1996

    nathandance1996 New Member

    the drawings were just drawn in "kolourpaint" as i was doing them quickly, i draw with pencil and paper better than i can use CAD, i just didn't want to dig out the scanner.
     

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  13. 5-7HEAVEN

    5-7HEAVEN Guest

    There's a member on another forum who installed a vertical-drive lawnmower engine with rim drive. He's also on youtube. His name is Retmachinist, I believe.:detective:
     
    Last edited by a moderator: Dec 30, 2010
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