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Old 04-15-2013, 09:58 AM   #1
KTMDAD OP
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17 and 47 tooth gearing- chain length?

Has anyone tried this combo?
What chain length do I need??
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Old 04-15-2013, 10:23 AM   #2
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Old 04-15-2013, 01:01 PM   #3
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118

I'm currently running 17/45 with 118
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Old 04-15-2013, 04:20 PM   #4
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Whenever I get a new chain I never bother to count the links. I get one that's longer than I'll need - like 120 links - then put it in place and cut it to the length that I need. I set the rear axle to the middle of its adjustment range and then figure out if I need to move it forward or back to get the chain to come out right.

As a rule of thumb, when you go up four teeth on the sprockets (doesn't matter front or back), you need two more links in the chain to keep the rear axle at the same position. It's pretty easy.
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Old 04-16-2013, 08:58 PM   #5
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I guess my question stands,has anyone installed these sprockets on there bike and can tell me what length chain they used?

thanks
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Old 04-16-2013, 09:36 PM   #6
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120 links on mine.

I hope you're not expecting to go real fast or far with 17/47 gearing. The bike runs out of breath about 115, and runs at 5200rpm (+/-) cruising at 70ish. Not the best for long distance travel, but nice for slow speed going, especially with a loaded bike. I don't have to slip the clutch as much off-road obviously, but in the real world, I rarely take the big POS down stuff tight enough to justify the lower gearing. When this set is toast, I'm going back to a 17/45 or 16/42.
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Old 04-17-2013, 08:27 AM   #7
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I run 120 and swap between 17/47 and 16/47, I prefer the latter for all but long ass road trips.
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Old 04-17-2013, 11:24 AM   #8
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Thanks for the help guys. Off to spend some cash.
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Old 04-17-2013, 07:58 PM   #9
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Sorry for the thread hijack....

Can you run the same 120 link chain for 17/45 and 17/42
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Old 04-17-2013, 09:22 PM   #10
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Quote:
Originally Posted by skidxr View Post
Sorry for the thread hijack....

Can you run the same 120 link chain for 17/45 and 17/42
Pretty sure you need 118 but it's been too long to remember for sure.
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Old 04-17-2013, 09:48 PM   #11
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17/45 needs 118 links. I don't remember what happened when I slapped a 16 on it, but I think it worked. Something about reversing the chain tensioner blocks is swimming it's way out of the fog.
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