Learning about transmissions on a junk engine.
  • Johnnycarburetor
    Posts: 22
    I bought a 1987 Honda trx 125 engine that I could take apart and maybe educate myself on how a motorcycle transmission operates and how to rebuild one, a daunting task, I know, but anyone i know who knows how to work on things like this is unwilling to share any knowledge. Does anyone know of any YouTube videos or Internet resources that cover this sort of thing? Also, how does the clutch mechanism work on this engine? The clutch disengages when ever the shifter is moved to change gear and it is unlike anything that I have experience with.
  • masterlinkmasterlink
    Posts: 9,989
    y r they unwilling 2 share??  its not magic or proprietary.  ur doing the right thing by cracking it open.  There r millions of websites and forums on transmissions. Neva hurts 2 take a look.

    image
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    herby ur useless. MAPLE 2010
    Suzukidude, shut up. CS 2010
    Yeah der, errone be using no seize CRWOODS 2013

    So forward thinking everything else seems SDRAWKCAB.
  • NZriderNZrider
    Posts: 5,081
    BTW the clutch on that motor doesn't work by the throttle. you'll find it probably has 2 clutchs. one centrifugally driven and one manually actuated via a mechanism on the shifter.

    its not a 2 minute job to tell you all about how motorcycle transmissions work and how to pull them apart and repair them. to be honest most people who know probably just cant be bothered to explain it when you could investigate it yourself and learn it much better
    *********************
    Winning is 90% rider and only 5% bike, the rest is luck
  • markyrocks
    Posts: 1,271
    This is a great idea. Post up some pics with some explanation.
  • sean
    Posts: 3,600
    That pic looks safe.just wondering how he got it upthere
  • Maple Leaf MXMaple Leaf MX
    Posts: 12,821
    A jack then his buddy padre needed the jack so he gave em some lumber and buggered off with their jack
    Expect to die whenever but dream to live forever

    ..the good times on the old DR board will never be back! RIP!
  • sean
    Posts: 3,600
    Must have been a Sirius jack to get him up there,damn padre he took it to the pawn shop
  • Maple Leaf MXMaple Leaf MX
    Posts: 12,821
    Yiiip
    Expect to die whenever but dream to live forever

    ..the good times on the old DR board will never be back! RIP!
  • sean
    Posts: 3,600
    Looks like hes welding so thats fixed, too bad he has to drop it,,,blow his shocks,old leaf springs
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