For Sale 15T and 16T GEBE style pulleys

Discussion in 'For Sale' started by DetonatorTuning, Jul 22, 2008.

  1. DetonatorTuning

    DetonatorTuning Active Member

    i did some experimenting with gearing on my GEBE /GP460 to see what would happen to mileage, accell. and topend.

    bought several timing belt pulleys and now will sell 2 of them. these are pulleys for 9mm wide, 5mm HTD pitch gates belts (GEBE)

    the 15T pulley has been drilled and tapped @ 5/16" X 24 thread and goes straight on the GEBE drive spindle. this is a polycarbonate pulley with an alum. center hub.

    the 16T is all allum. and will need to be tapped to be used.

    both shipped to you for $25.00 total.

    got something of motorbike interest you want to trade ? lets talk.

    thanks,
    steve
     

  2. bikejunkie

    bikejunkie New Member

    how well did the 15t work on your gebe? How much did you lose on the low end?
    dennis
     
  3. DetonatorTuning

    DetonatorTuning Active Member

    the cogs themselves work out well, they are the proper width and pitch for the belt.

    how much lowend loss is pretty subjective. with the 15T the lowend was still ok, but the ratio made it hard to maintain rpm's on hills and against headwinds.

    on my GP460 setup each tooth is 2.5mph at topend, and about 600rpm diff. per the same speed.

    steve
     
    Last edited: Aug 18, 2008
  4. JemmaUK

    JemmaUK Guest

    how much for the #16 gear?

    Jemma xx
     
  5. DetonatorTuning

    DetonatorTuning Active Member

    JemmaUK,

    i dedicated the 15T to you when you had hopes of making your U.S. trip. you can have the 16T too if you think it will help you, but, what are you going to try to run it on ?

    my GP460 will do alright with the 15T over varied terrain, i give up some rpms and speed over hills that i don't with the 14T. on level gound i can either run 600rpm slower or 2.5 mph faster depending on desires.

    i've never tried the 16T, it would need to be tapped for threads. it's probably not good for much other than level ground ultimate speed attempts.

    PM me and we'll work out how to get them to you.
    steve
     
  6. JemmaUK

    JemmaUK Guest

    Sorry, my brain is a little out there at the moment. There is so much going around in my head. I remember you telling me but so many things are flying in and out of my head.

    My reasoning for the 16T is as follows. When I had the non-piped engine with a 13 I did the worst hill here at a final speed of 20mph. If I open the engine right up now I can do the same hill at 28mph. if the top end speed increase is 2.5mph per tooth and the loss of hillclimbing speed is roughly equal then I should have a final velocity on the same hill of 22mph - thats still in the engines powerband.

    If I take a 13T, 15T, 16T on the run in the US then I should have a gear for pretty much all conditions :)

    Jemma xx
     
  7. astring

    astring Member

    Are you going to start making these for sale?
     
  8. DetonatorTuning

    DetonatorTuning Active Member

    no need they are readily available online.

    steve
     
  9. astring

    astring Member

    really? can you link those for me?
     
  10. DetonatorTuning

    DetonatorTuning Active Member

    i'll look up my bills, i can't remember right now.

    i gave this info to a couple guys in PM's, if either of you are reading this thread, please go ahead and post the link.

    thanks,
    steve

    EDIT you want sdp-si.com they have a real good web site, easy to navigate and tons of info.
     
    Last edited: Aug 26, 2008
  11. heathyoung

    heathyoung Member

    Hmmm... Interesting. In Aus we have a seller who has GEBE knockoffs with 16 tooth pulleys. Stupid fast for a bike, but has no hill climbing ability at all.

    Does 50Kph (31mph?) on the flat with a 31cc 4 stroke engine wound all the way out. It did 65Kph (40mph) down a hill before I chickened out. EEk.
     
  12. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    I have seen them being sold on ebay
    How did you get to ride one?

    Can you give us more of a review of the bike?
    Belt drive set up, etc
    There is no idler tensioner on the belt right?

    I think they sell smaller pulleys too

     
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