GT size of chain adjuster clamp bolt and extension adapter for ratchet wrench? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 4 (permalink) Old 11-10-2012, 01:11 PM Thread Starter
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GT size of chain adjuster clamp bolt and extension adapter for ratchet wrench?

I have a 2011 Sprint GT, and have adjusted my chain by loosening the adjuster clamp bolt with a crescent wrench, a bit difficult and frustrating because of tight quarters behind the rear sprocket. So I'd like to make it easier and do this with a ratchet wrench... what's the size of the chain adjuster clamp bolt? And how long of an extension adapter do I need for my ratchet wrench to clear the rear sprocket to turn the adjuster bolt? My bike isn't home so I can't make measurements.
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post #2 of 4 (permalink) Old 11-10-2012, 02:54 PM
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The bolt-head size is 17mm.
I just use a 3/8" drive ratchet and a shallow socket. But if you need an extension, somewhere between 5" and 6" max. will clear the chain guard.
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post #3 of 4 (permalink) Old 11-10-2012, 03:22 PM Thread Starter
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Thanks!
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post #4 of 4 (permalink) Old 01-12-2013, 12:37 PM Thread Starter
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As Bruce C mentioned, a shallow 17mm socket and ratchet wrench will reach the chain adjustor bolt, but will turn only 2-3 clicks at a time because the chain guard is in the way. With a 5" extender, I can turn the bolt at least 45 degrees at a time on my 2011 Sprint GT, much easier.
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