chain tension help

Discussion in 'Motorized Bicycle General Discussion' started by paul, Jan 12, 2008.

  1. wayde

    wayde New Member

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    i am not using a tensioner i just made my chain one link shorter then added the half link works great
     
  2. MotorbikeMike

    MotorbikeMike Dealer

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    Hi Wayde, it's been my experiance that half-links are weak and problematic. This is wht I developed the "T-Shirt".

    Tine will tell on your bike, but I've had half-links fail even on the people chain, so I will never trust one on an engine again.

    Mike
     
  3. wayde

    wayde New Member

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    time will tell i guess i've either been lucky or i found a good one i'm doin about 52 km/h and it's a blast
     
  4. deacon

    deacon minor bike philosopher

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    I took a few links out of my motor chain and then used the tensioner on the people chain. The tensioner doesn't get much use so should last forever. Seems to work fine after I got the tension on the motor chain about right.
     
  5. Pablo

    Pablo Master Bike Builder & Forum Sponsor

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    All I can say is tensioning the chain is the biggest headache so far.....I don't mind taking links out (kinda fun really) but it just seems like I can't get the tension just right and the tensioner seems to interfere more than it helps. Also it seems like my sprocket has a small side to side wobble (NOT up and down alignment). Maybe one side is tighter than the other......:confused:
     
  6. deacon

    deacon minor bike philosopher

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    On mine which I probably did wrong. I measured the distance from the sprocket to the first spoke one both sides of the nut. i tightened the nuts till the distance was the same for all of them. Not sure if that would help. but yeah it was a pain for me and i am never sure I have it right.
     
  7. Andyinchville1

    Andyinchville1 Manufacturer/Dealer

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    Short of mounting the sprocket on a grubee hub or mounting a custom(ized) sprocket to the disc brake hub it is very difficult or nearly impossible to have a perfectly mounted sprocket with no side to side or up an down wobble....You can get very close tho or at least close enough..

    Andrew
     
  8. Pablo

    Pablo Master Bike Builder & Forum Sponsor

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    Actually that is a good idea!! Don't know why I didn't think of measuring it other than lack of O2 to the brain rotfl
     
  9. wayde

    wayde New Member

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    i used the tensioner when i startes but the speed i went it started to melt the little plastic wheel thingy and it cooled and seized
     
  10. Norman

    Norman LORD VADER Moderator
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    guys here's a few pictures of chain tension first is my chain slack/at rest.[​IMG]
     
    #30 Norman, Jan 21, 2008
    Last edited: Jan 21, 2008
  11. Norman

    Norman LORD VADER Moderator
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    now the chain is pushed up or tensioned up as you can see more slop than most people like but I haven't once had my chain come off
    [​IMG]
     
  12. Norman

    Norman LORD VADER Moderator
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    sooner or later the pinch bolt threads are going to so south on you and here is my solution to this.
    [​IMG]
     
  13. Norman

    Norman LORD VADER Moderator
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    this shows it greased and ready to go back on and in the orientation of how it goes on the bracket.
    [​IMG]
     
  14. Norman

    Norman LORD VADER Moderator
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    here it is all back on and you can see at the top limit. Note the sheet metal screw and socket head bolt these are to stop the bracket from rotating into the spokes . The socket head bolt hole is tapped in the frame and drilled a hair over size on the bracket. I also have shims under the bracket as the frame dia. wasn't large enough and the bracket wallered around on the frame.
    [​IMG]
     
  15. Norman

    Norman LORD VADER Moderator
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    here the tensioner mount is a little different and while building the bike I built up the area where the tensioner mounts by welding on donated frame material form a donor bike. You might be able to use a propane torch and solder and do the same thing if you don't have a welder. The solder to use would be the stuff plumbers use to solder together metal ducting.
    [​IMG]
     
  16. Norman

    Norman LORD VADER Moderator
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    Here is examples of chain breakers Walmarts on top and my homemade.
    [​IMG]
     
  17. Norman

    Norman LORD VADER Moderator
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    another way of breaking the chain with a punch (better to use a nontapered punch )and hammer. I use my vice as a back up opened only far enough so the pins will come out. you can also use a block of wood with small holes drilled to receive the pins as they are knocked out there's many ways to do this etc.
    [​IMG]
     

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