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Thread: 83 GS1100E chain and sprockets upgrade??

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    Default 83 GS1100E chain and sprockets upgrade??

    What's everyone running on their GS1100E? Going with a 530 chain 16t front sprocket and stock rear sprocket. Any other configuration you guys think is better. No I'm not drag racing or ride with a passenger.

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    Stock is 15T front & 42T rear. 2.80 ratio

    15T + 3T = 18T front (you need this size in order to match the original sprocket diameter)

    2.8 x 18 = 50T rear sprocket. If you want lower RPM then you can go to a lower tooth count.

    1100E uses 96 links in 630. 96 x .75" (link length) = 72" long chain. A 530 chain has 5/8" between links. 72" x 8/5 = 115.2 (use a 116 link chain in 530)
    1100ES uses 98 links in 630

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    Mine is 18 on the front and 50 on the rear. 120 links of 530 chain and I cut off 4 if memory serves.

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    530 18/50 and I think the chain was 119links. I have a 82 gs1100e with a 84 gs1150 rear swing arm.
    2016 Ducati 1299s
    1989 BMW K100RS
    1982 GS1100E-current build
    1980 GS1000E-sold
    1982 GS1100L-sold
    1982 CX500-sold

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    If you are wanting to keep the stock gearing but switch to 530 then 17/48 is what you want. It will not change the gearing.
    The 530 - 17 tooth sprocket is the same diameter as the 630 - 15 tooth sprocket
    My stable
    84 GSX1100EFG-10.62 @ 125 mph 64'' W/B.
    85 GS1150-9.72@146mph stock W/B.
    88 GSXR1100-dragbike 9.18@139.92mph/5.68@118mph.
    98 Bandit 1200-9.38@146mph/6.02@121mph.
    90 Suzuki GS 1425cc FBG Pro Stock chassis 5.42@124mph
    06 GSXR750 10.44@135mph
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    I have 18/48 and the bike pulls fine.
    Jeff

    Living the dream...

    1980 GS1000 that has been modestly modified.

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    Quote Originally Posted by stetracer View Post
    The 530 - 17 tooth sprocket is the same diameter as the 630 - 15 tooth sprocket
    This is incorrect.

    Pitch diameter for 630 15T sprocket is 92mm
    Pitch diameter for 530 17T sprocket is 86mm
    Pitch diameter for 530 18T sprocket is 91mm

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    Quote Originally Posted by Nessism View Post
    This is incorrect.

    Pitch diameter for 630 15T sprocket is 92mm
    Pitch diameter for 530 17T sprocket is 86mm
    Pitch diameter for 530 18T sprocket is 91mm
    I've seen both recommended but I went with 18t.
    1979 CBX, AW440 Maico, GS1150EF

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    Best practice is to match the front sprocket size. Never smaller.

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    Quote Originally Posted by P09luis View Post
    What's everyone running on their GS1100E? Going with a 530 chain 16t front sprocket and stock rear sprocket. Any other configuration you guys think is better. No I'm not drag racing or ride with a passenger.
    I've a bit more hp/torque with a '84 1150efe plus additional boost from headers and rs36 flatslides. 18t front, 45t rear to lower rpm.
    1979 CBX, AW440 Maico, GS1150EF

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