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post #1 of 7 (permalink) Old 06-18-2013, 06:37 PM Thread Starter
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belt adjustment

Yes another thread about belt!!! just a quick question. my belt need some adjustment so I have ave read some thread before and I know a bad alignment result is bad for the belt in 2 week we have a 3 day road trip and in one month a 1 week road trip ( Canada Cabot trail ) so I want to make sure the belt is ok!!

So I have unscrew the belt tensioner till the axle is completely at the loose position. I just snug the nut and I have count the turn each side. correct me if I'm wrong but this way I'm sure the axle is align !!??? but at the end the mark on the tightener are about 1/2 mark off ! Both side are not exactly at the same mark. Is this normal?

Thanks for your help!!!

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post #2 of 7 (permalink) Old 06-18-2013, 09:22 PM Thread Starter
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I think I'm wrong its not a good way to start ! don`t mean the axle is align at the start of the adjustment slot! I took a straight steel rules and took some mensuration from the side where the big nut ( nut for the suspension arm ) and the side of the tire ( the distance was not that big because I ave a 230 tire) now both side a equal and the belt tensioner are very close to the same mark both! I think this is a easy and fast way to make sure your axle is align what do you think!!

Vance and Hines Slash-Cut Staggereds.
LA Chopper intake
Cobra FI2000 PowrPro (auto tune)
Hid head light
Wrap Around LED Fork Turn Signal
Integrated Tail and Turn Signal Kit
side mount plate
HANDLEBAR SANTEE 10" STRAIGHT-UP (harley handlebars)
black exhaust wrap
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Black Spear Custom Side Mirrors
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Avon 230 and 90/90
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secondary butterfly remove
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post #3 of 7 (permalink) Old 06-18-2013, 10:24 PM
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Hey Mad, there are quite a few threads on here about how to align & tension the belt. You can use the hash marks on the adjusters and bike frame to get things fairly close as well.

Your "measurement" method may be a decent start. If you have a jack so you can pick up the rear wheel, you can gently run the bike idling in first gear, and watch how the belt tracks on the rear pulley. If you are running the stock pulley, you will want the belt to run more to the outside of the pulley. Make sure you test your belt tension before you start. Obviously without the bike running!

Some folks test belt tension by selecting a location where you can get a decent grip on the belt, and attempt to roll it (twist it) about 30-45 degrees with decent pressure. Don't try and break your fingers, just try to twist the belt. If you can twist it 90 degrees it is too loose. If you cannot twist the belt at all, or only maybe 10 or 20 degrees, it is too tight.

Once you are happy, go ride it. If the belt is mis-aligned, it will make lots of squeaking / chirping / rubbing noises.

Do a search on here to find many more technical descriptions of belt alignment and tightening. The service manual will also discuss this.

Use all information at your own risk. E&OE.
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post #4 of 7 (permalink) Old 06-20-2013, 02:57 AM
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It's really a "feel" kind of a thing. The adjustment hash marks are great, but there's at least a hash marks worth of slop in the adjusters, so now way to be accurate there, they get you in the ballpark. My left and right side hash marks are about a half mark off from each other and the belt is tracking fine and not making any noise. I liked 30 degrees with easy pressure, 45 degrees twist seemed too loose to me, but anything was better than banjo factory tight and the noise it was making.
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post #5 of 7 (permalink) Old 06-20-2013, 04:21 AM Thread Starter
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Si if you don't use the mark. Wath method do yo take to make sure you are align? Thanks!

Vance and Hines Slash-Cut Staggereds.
LA Chopper intake
Cobra FI2000 PowrPro (auto tune)
Hid head light
Wrap Around LED Fork Turn Signal
Integrated Tail and Turn Signal Kit
side mount plate
HANDLEBAR SANTEE 10" STRAIGHT-UP (harley handlebars)
black exhaust wrap
Kuryakyn BLACK ISO-GRIPS
Black Spear Custom Side Mirrors
Baron 1-2`` Lowering kit
Avon 230 and 90/90
Saddlemen Renegade Solo Seat
secondary butterfly remove
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post #6 of 7 (permalink) Old 06-20-2013, 11:32 AM
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Quote:
Originally Posted by madmaths View Post
Si if you don't use the mark. Wath method do yo take to make sure you are align? Thanks!
I just made sure the belt was tracking to the left of the pulley when looking from behind. I did that by spinning the wheel, while the bike was on a jack, adjusted it so that the belt started tracking in the middle and then brought it back to the left just a bit.

I think the window for "correct" adjustment is pretty big. In other words, it's not a "precise" kind of thing, it just has to be fairly close, tracking to the left side of the pully and not too tight or too loose.
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post #7 of 7 (permalink) Old 06-20-2013, 11:43 AM
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Has anyone used the "string" method to determine alignment between front and back wheel on the '900 and then compared the result to where the hash marks indicate? ...Just curious.

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