some general qs.

Discussion in 'General Questions' started by Werdna, Apr 25, 2007.

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  1. Werdna

    Werdna Guest

    Just some general questions...Can I run a normal bicycle chain with my engine? I think it will fit but is it tough enough? Also, what is the diameter of a 50t sprocket?


  2. spunout

    spunout Member

    i dont know about the diameter of 50t sprocket, but this much is certain-you'll snap a regular bike chain when using it for the motor drive. let's say for the sake of argument it doesn't snap when you torque it and send shrapnel :shock: into the back of your leg, the width of a bike chain will fit a drive sprocket, but so narrowly that you'll probably stress out the motor :cry: . motor drive chains are the size they are for reasons.
  3. rcjunkie

    rcjunkie Guest

    If you can find a chain that fits, it will work fine without a problem. Engine alignment and sprocket fit is critical with narrower chains and you have greater risk of chain slipping off the rear sprocket if any of the mountain bolts/assembly loosen up with vibration-as a result of increased sprocket runout.

    Your best bet is to go to and buy this product: Precision 081 Drive Chain. Better than 415
    chain. Much lighter and more precise and
    harder steel. Fits up to 3mm width counter
    shaft sprocket. 60 link, 150cm/59 inch length.
    Includes Master link and keeper. Only
    $14.99 includes shipping Lower 48 states

    It is what you are looking for and has worked fine on my daily rider. You'll need to knock the chrome off of the sprocket tines to get it to fit properly without jumping or binding.

    Don't see how width of a chain affects stressed on a motor. Chain tension can adversely affect drive bearings but that is another issue.
  4. azbill

    azbill Active Member

    I am running a heavy duty bmx chain (KMC Z510H BMX CHAIN - 6.95 ea from
    I needed it for clearance with my 3" back tire, I had to change engine sprocket from dax to the one from livefast to allow smaller chain.
    this chain is for stunt riding bmx'ers made for high torque, perfect for me... hasn't givin any probs yet :D

    ps I needed 2 chains for the deviate, it's a pretty long bike 8) 8)
  5. Hugemoth

    Hugemoth Guest

    I've tried the .081 chain and broke it several times. The standard 415 chain works much better for me. IMO the best option is a name brand 415 or 420 chain. I've been riding for over a year with one and have had no problems at all.

  6. spunout

    spunout Member

    i had nothing but problems using regular chain, but it wasn't heavy duty
  7. spunout

    spunout Member

    the width problems for me occured because the chain felt really tight on the sprocket teeth, and even when chain was looser, under acceleration the bike felt like it wanted to go sideways. i must've had a really small chain.
  8. azbill

    azbill Active Member

    I have also heard of people using garage-door opener chain
    whatever chain you decide on, it must fit the teeth on both engine and back wheel
  9. Guest

    Guest Guest

    You can buy a QUALITY 415 chain from D.I.D. for around 15 dollars....super tough. If a 420 will fit, go for it. D.I.D. has those too. I got a 120 link with master (428) from D.I.D. for 15 dollars. It was for a Honda, but still if one will fit, use it.
    Any motorcycle shop will have them or can order one.
  10. Werdna

    Werdna Guest

    Thanks so much for the imput!
  11. azbill

    azbill Active Member

    I measure the 50 tooth at 8.25" from toothtip to toothtip
    sorry for the delay, forgot had a 50 :p :p