Chains Chain size?

Discussion in 'Transmission / Drivetrain' started by pitchy, Mar 8, 2016.

  1. pitchy

    pitchy Member

    I`m starting my four stroke board track build, I have a question about chain size.
    I plan on running a 12 tooth sprocket from engine to a 24 tooth on a jackshaft then a centrifugal clutch and chain to rear wheel sprocket.
    I see ya can get clutches that use 35 or 40 chain, is a 35 chain the same as the 415 chain?
    I`m trying to figure out what I need to get for the rear wheel setup, I was thinking about one of those hub brackets that bolt up to a sprocket but they seem to all use 415 chain.
    I hope that make sense to someone because I`m confused.
     
    Last edited: Mar 8, 2016

  2. pitchy

    pitchy Member

    Ok I figured out the chain size, a 40 chain will fit a 415 sprocket other than being a little wide.
    I see on gasbike they only sell the three bolt hub mount with a 44 tooth sprocket and I`m looking for a 50 tooth.
    Question, do those hub adapters hold good on the hub and couldn`t I buy a 40 sprocket and drill holes in it to mount the hub adapter too.
    They sell all kinds of sprockets at fleet farm if I could do that.

    Too give ya an idea what my setup is.
    I also want to run the jack shaft where the pedals were mounted but need to find bearings that fit the race, large, anyone dealt with that?

    [​IMG]
     
  3. pitchy

    pitchy Member

    Oh forgot, I need to know what is the outside diameter of your average go cart clutch?
    Thanks.
     
  4. Greg58

    Greg58 Member

    I run the #41 chain which is a little wider than the #415, its has a better construction and has a higher breaking point. I've been running the chain on my black bike for 4 years. I buy it locally at tractor supply in 10 foot lengths for less than $20.
     
  5. pitchy

    pitchy Member

    Thanks Greg, will the 41 work on a 40 sprocket as it seems most of the clutches have that size ?
     
  6. Greg58

    Greg58 Member

    Not unless you turn down the sprocket a bit, 41 is narrower.
     
  7. Greg58

    Greg58 Member

    Here is a chart.
    [​IMG]
     
    Arty likes this.
  8. pitchy

    pitchy Member

  9. skyash

    skyash Active Member

    No reason why you could not put eny sprocket you like on that thing iam turning down 2 sprockets for diy shift kit today to fit a 415
     
  10. pitchy

    pitchy Member

    That sounds like the way to go, do ya have the outside measurement of a clutch, I need to know so I know how far back I can mount the motor.
     
  11. Greg58

    Greg58 Member

    The rear sprocket you are looking at is .250 so it will work with the #41, the 40 will also fit but will have a little play on the rear sprocket.
     
    Last edited: Mar 8, 2016
  12. pitchy

    pitchy Member

    Cool, now I need that hub adapter with a 50 tooth sprocket .
     
  13. Arty

    Arty Active Member

    Greg58:
    Thanks for the chain cross reference. It will come in handy.
     
  14. sbest

    sbest Active Member

    Why is everyone going larger?
    There is no way you are going to break 410 chain at 1600 lbs breaking strength.
    Better brands like Tsubaki have better strength and life than any farm supply chain.
    It is an extra half pound you don't really need.

    Is there something I am missing? Or is it the standard male "bigger is better" syndrome?

    Steve
     
  15. Greg58

    Greg58 Member

    The kit chain is weak, I've broke several. The 41 on the other hand is bullet proof and available right up the sreet.
     
    Last edited: Mar 10, 2016
  16. sbest

    sbest Active Member

    Greg, I think if you just bought good quality chain in the stock size you would be happy.
    The advantage is not in the size but the quality, plus the proper sized chain fits the sprocket.
    410 or #43 chain from your same supplier would last as long as the 41 chain.
    There are different qualities of chain with the stuff in the kit being at the bottom of the heap.
    I am guessing your breaks were from manufacturer's defects?

    In terms of quality from worst to best:
    - cheap kit chain or from discount stores - loose links and plates, inconsistent spacing, rolled strip rollers
    - farm supply or hardware store chain - "value priced", wears fast but does meet strength standards
    - industrial grade - consistent quality, long wearing, still prone to rust
    - Bike or motorcycle shops have the best chain. Rust resistant, long lasting and "O" ring types.

    This broken chain below is on a good quality DID chain that was rusted and stiff (and 50hp).
    [​IMG]
     
  17. Greg58

    Greg58 Member

    For each his own, I've been using the same chain for five years now with no problems. If it ever wears out I'll replace it.
     
  18. Greg58

    Greg58 Member

    I know chains, I worked in the industrial maintenance field for 34 years. I know what does and doesn't last, I chose a chain by 1. Was good enough for my needs. 2. It was available locally.
     
  19. pitchy

    pitchy Member

    What about the clutch sprocket, can ya put one on it for a 410 chain or do ya have to face it off?
    No one seems to interested in the build so I don`t know wether to post a build thread or not.
     
  20. skyash

    skyash Active Member

    I like how my 4 stroke has a little chain in its transfer box and all the power goes to it then to a bigger chain to the wheel so I could ran that small chain the hole way it shouldn't brake
     
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