Chain replacement? - Grubee Gen II

Discussion in 'Frame Mounted Engines' started by javelina1, Aug 16, 2009.

  1. javelina1

    javelina1 Member

    For the Grubee Gen II owners. Are we able to use the 1/8" narrow chain with the OEM drive sprocket? (like the KMC Z510H chain?)


  2. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    no it is too narrow
  3. javelina1

    javelina1 Member

    cool, if I plan to switch to the BMX chain, I'll be the right drive sprocket. I've rode my MB for about 20 miles now, and the 415 chain has stretched one link already. Incredible.
  4. plycarguy

    plycarguy New Member

    I have switched fro the #415 chain to a #41 chain and have had NO problems. The quality of the rollers on the #41 chain is much better than the chain that comes with the motors.
  5. HoughMade

    HoughMade Guest

    I'm running the #41 as well- works perfectly. It will fit where the stanhdard #415 fits...if you need it narrower, for clearance though, the #41 isnot the ticket.
  6. azbill

    azbill Active Member

    agreed...I used narrow bmx chain when I needed clearance for a 3" tire
    (I think I bought a narrow engine sprocket from livefast)
    41 chain is 1/2 the money and it fits if clearance isn't an issue
  7. javelina1

    javelina1 Member

    you guys have got me sold on the #41... I'll pick up some this weekend.

    can't believe how much the 415 is stretches.

    (azbill, thanks for the patience with my questions...) :D
  8. azbill

    azbill Active Member

    all good grasshopper, now you can pass knowledge on to someone else :cool2:
    the cooler weather is just around the corner...we gotta get some group rides happening:)
  9. javelina1

    javelina1 Member

    indeed buddy! group ride sounds good. cool weather soon!!! :D I'm in Gilbert, so you ain't that far away.... there are a herd of MBer's around here too....
  10. javelina1

    javelina1 Member

    Just an fyi - I've got the clearance. Though I'm running a 2 1/4" rear tire. It just barely clears.

    I was hoping to stop some of the chain noise. But after a 20 miles of running the motor, the chain stretched a link, and it worked out to tension everything up now.

    Of course, if the 415 can stretch a link in 20 miles, what will it do over the life. So I'd rather have something more stable, and will look at the #41... (Lowe's is right down the street...) :D

    I've also added just a dash of grease on the drive gear spines. (just a dash on the little drive gear).
  11. javelina1

    javelina1 Member

    I ended up buying the KMC K415H chain. Actually, had to buy two, since it only comes in 98L. Needed another 4 links. So I've got some spare links now... :D

    Found the K415H off the Net for $7.50 per.

    looks a bit more solid. Lubed up the chain with my favorite

    Wow, what a diff. reduced the chain noise a bit. But I think the Chain-L helps with that somewhat too. (I use Chain-L on my mountain bikes, and those chains are whisper quiet).

    any rate, I'm happy with the KMC K415H chain. Glad I replaced the OEM "taffy" chain.