New.. I know Nothing!!

Discussion in 'Introduce Yourself' started by ForrestTrek, Mar 30, 2008.

  1. ForrestTrek

    ForrestTrek New Member

    Hey guys.. im new and I ride a trek.. But I wanna try to put a motor on it.. Ive heard of people using weed eater motors.. would that work?

  2. kerf

    kerf Guest

    Welcome, I'm sure someone's made it work but these small motors aren't really up to the task. Most of them are half crank, meaning only one crank bearing, because they are designed for almost no radial loading. The cooling fins are small because they are designed to operate under low load. You would be served better in the long run with a purpose designed bike engine, such as Staton, Golden Eagle, one of the Happy Time variants, etc.
  3. Zev0

    Zev0 Member

    Welcome Trek. Search Search Search. You'll find all the answers you need.
  4. mickey

    mickey Guest

    Welcome aboard, Forrest
  5. fastboy9

    fastboy9 Member

    Welcome to MBc, you'll love it here! personally I would recomend a Happy time frame mount engine for a trek, but then again you have to think about your budget and what your going to do with it? there is so much information here, just read read read! and good luck! if you cant find an answer to your question just ask!
  6. fetor56

    fetor56 Guest

    G'day man & welcome.
  7. codi79

    codi79 Member

    Im also planning on making a motorized bike. I've got 20cc (about 20cc) Weed Eater motor and I was actually working on it today. With a weed eater motor it does not have any sort of clutch, which means that when you start it, its going to wanna run away. If you make a spindle drive (friction drive) it will need to be pedal started to turn over the motor, so not having a clutch wont be too much of an issue. I know someone who has done this so I know it is possible and believe it or not he actually has the exact same motor that I have and will be using. If you have any questions feel absolutely free to PM me.

  8. graucho

    graucho Active Member

    Hi Forrest. Welcome to MBc! Home of many answers, and awaiting your ideas.

    General request to all new members.
    Please, before posting any questions, do a search. Then READ,READ,READ.
    There is a ton of information here. Many of your engine and performance issues in the Garage & Tech/Mech Help have already been covered. Here at MBc we are the home of nearly all MoteredBike questions. If you search and are unable to find your answer, don't hesitate to post your question. Were here for each other! Enjoy! :grin:
    Here's a great post link to get you started.
  9. Demosthenese

    Demosthenese Guest

  10. hellbilly

    hellbilly Guest

    Again, welcome, and good luck to you!
  11. KilroyCD

    KilroyCD Active Member

    Welcome to MBc Forrest! If anyone has done a weedeater conversion, I'm sure you'll find the information here.
  12. decompiler

    decompiler Member

    Welcome to MBc Forrest!

    I wish you good luck in building your bicycle.
  13. quay1962

    quay1962 Guest

    welcome to MBc..home of many answers...yes...good luck and happy motoring!
  14. Milo

    Milo Guest

    Welcome to MBC! :)

    20cc will probably only be about 1 hp and .8 nm/torque.
    whipper snippers usually turn about 7-9k rpm

    your best bet is probably spindle drive.

    if its half crank you need a 3rd bearing on the shaft or it could break, as you have to put alot of pressure on the wheel so it wont slip and eat the rubber off the tire.

    lots of info here,,mostly for powerboard scooter, but should be handy for a bike aslo ,

    Hope it helps

  15. RdKryton

    RdKryton Active Member

    Hello an welcome