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post #1 of 7 (permalink) Old 07-11-2011, 09:09 PM Thread Starter
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Drive belt debris?

Just hit 140 miles on my 2010 1700 bird. Looking at the rear tire/rim I noticed some small black specks/flakes.

I think its coming from drive belt. Belt tension seems ok, haven't noticed any abnormal wear on belt. Could this just be belt break in?

I think belt line up is good but there is about an 1/8th of a inch gap between left belt edge and inner sprocket flange. Is this gap normal or should no gap on either side of belt.

Thanks
John
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post #2 of 7 (permalink) Old 07-12-2011, 02:56 AM
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They shed constantly. Doesn't mean theres anything wrong, but if it IS out of alignment there could be more dust. If you keep seeing flakes instead of dust that might be worrisome, tho not right now, as like you said the belt is new and may shed larger debris. Later it will be mostly powder that looks like brake dust.

Properly aligned the belt is supposed to be against the outer flange, but you should be able to see a very slight gap between the flange and belt. Probably about .025".
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post #3 of 7 (permalink) Old 09-26-2011, 09:04 AM Thread Starter
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Dazco

You were right, took it in for 500 mile sevice a while back and they said sheeding was normal.

Thanks
John
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post #4 of 7 (permalink) Old 09-26-2011, 11:27 AM
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Yep. But also note that shredding CAN be a sign os improperly adjusted alignment or tightness depending on how MUCH there is. Thats my personal belief, but i believe that because mine has at times shredded less than other times and seems to be dependent on how it's adjusted. But surely it's normal because common sense tells you that. Mine has never NOT shredded since new. However, I did have it replaced at 12k because it was shredding badly due to maladjustment on MY part. But i simply did it by the service manual, and thats why they warranteed it. Because they know the marks on the swingarm are NOT accurate. Why they left that in the manual i have no idea.
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post #5 of 7 (permalink) Old 10-03-2011, 05:38 AM
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What is the recommended method for aligning and tensioning the drive belt?
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post #6 of 7 (permalink) Old 10-03-2011, 04:16 PM
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There are various ways people use, but the one you want to stay away from is using the marks on the swingarm. I figure you know that or you probably wouldn't have asked, but just thought i'd mention that. I use 2 holes that are in the swingarm on each side. You will find one next to the front belt guard mount and on the other side in the same place. There are 2 on the left, but DON'T use the one with the metal collar in it. I already wrote about this twice and the rest it should be obvious. but i'll just say use a bolt or something in the hole with a string around it and measure to the center of the axl, then take it to the other side and do the same. i am working on using a straight rod, bolts or some sort of pegs in the holes, then lay the rod against them and that way you can tie a string around the rod out from the swingarm so there are no obstructions and i can get it more exact.

That said, i feel when very well aligned the belt rests too hard against the outer flange, so i've been aligning it then adjusting the left side of the axl in a bit to relieve that pressure. I really think triumph's final drive on this bike needs refining and i have no doubt that will happen on future models, if it hasn't already.
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post #7 of 7 (permalink) Old 10-03-2011, 06:32 PM
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Let's hope that if they do,we'll be able to retro fit it on our older birds. Dave!!!
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