2008 F650GS Chain Questions

Discussion in 'Parallel Universe' started by mfgc2310, Feb 14, 2014.

  1. mfgc2310

    mfgc2310 Been here awhile

    Joined:
    Oct 22, 2011
    Oddometer:
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    Do the F650, F700, F800 all use the same chain and sprockets aside from different tooth counts on the sprockets?

    I think my F650GS is spec'd for a 525 chain but these are hard to come by and I would be OK with a 530 - anybody with experience doing this. I will be running a 16 tooth counter sprocket.

    Do the sprockets need to match the chain - if I buy new sprockets for the F650 will that match equally well to the 520 or 530 chain? Why is it when you buy sprockets they are not designed to match the chain width? Is it because the interior chain width does not change only the exterior for any 500 series chain?

    Is it because all 500 chains have the same interior (sprocket) width but only the outside width changes? If that is the case then I only need to be worried about the 530 chain rubbing where the 525 would not !!!

    Thanks for all your responses.
    #1
  2. mfgc2310

    mfgc2310 Been here awhile

    Joined:
    Oct 22, 2011
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    139
    Location:
    Ottawa
    Bicycle and Motorcycle Chain Dimensions

    <TABLE cellSpacing=0 cellPadding=3 align=center><TBODY><TR bgColor=silver><TH>Chain No.</TH><TH>Pitch</TH><TH>Roller Diameter</TH><TH>Roller Width</TH><TH>Sprocket thickness</TH></TR><TR><TD align=center>Bicycle, with Derailleur</TD><TD align=center>1/2"</TD><TD align=center>5/16"</TD><TD align=center>1/8"</TD><TD align=center>0.110"</TD></TR><TR><TD align=center>Bicycle, without Derailleur</TD><TD align=center>1/2"</TD><TD align=center>5/16"</TD><TD align=center>3/32"</TD><TD align=center>0.084"</TD></TR><TR><TD align=center>420</TD><TD align=center>1/2"</TD><TD align=center>5/16"</TD><TD align=center>1/4"</TD><TD align=center>0.227"</TD></TR><TR><TD align=center>425</TD><TD align=center>1/2"</TD><TD align=center>5/16"</TD><TD align=center>5/16"</TD><TD align=center>0.284"</TD></TR><TR><TD align=center>428</TD><TD align=center>1/2"</TD><TD align=center>0.335"</TD><TD align=center>5/16"</TD><TD align=center>0.284"</TD></TR><TR><TD align=center>520</TD><TD align=center>5/8"</TD><TD align=center>0.400"</TD><TD align=center>1/4"</TD><TD align=center>0.227"</TD></TR><TR><TD align=center>525</TD><TD align=center>5/8"</TD><TD align=center>0.400"</TD><TD align=center>5/16"</TD><TD align=center>0.284"</TD></TR><TR><TD align=center>530</TD><TD align=center>5/8"</TD><TD align=center>0.400"</TD><TD align=center>3/8"</TD><TD align=center>0.343"</TD></TR><TR><TD align=center>630</TD><TD align=center>3/4"</TD><TD align=center>15/32"</TD><TD align=center>3/8"</TD><TD align=center>0.343"</TD></TR></TBODY>
    #2
  3. mfgc2310

    mfgc2310 Been here awhile

    Joined:
    Oct 22, 2011
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    139
    Location:
    Ottawa
    So do people run all of the 520,525,530 chains on the same sprockets which must look thin on the 530 chain.

    Does it matter? Should I just run a 520 chain?
    #3
  4. Dorito

    Dorito Dreamer and Doer

    Joined:
    Jul 31, 2010
    Oddometer:
    7,634
    Location:
    Maryland
    Yes, sprockets need to match the chain. By an odd set of circumstances, I ended up with a rear sprocket that was one size off. (I think it was a 520, might have been a 530 though).

    The mismatch wears the chain much faster, and in hind sight, regardless how I adjusted that set it was always "slapping". That set ran about 1/2 the mileage the other sets did.
    #4