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belt drive woes (Read 285 times)
Steddy58
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Re: belt drive woes
Reply #15 - 01/14/20 at 09:44:02
 
Hi all, nice discussion and some very valid points, I have just purchased a 17 45 sprocket combo with an x-ring chain but also i've purchased a new belt  (ouch!) so I'll run the chain for a while and see if I'm happy with it, but after all that expense I might have to save up for the gas  Smiley
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1988 sav, mikuni vm36 carb (lancer),high comp piston, racing cam, raptor petcock, self-made exhaust, delkevic silencer (ryca header), K&N air filter, 48,000 miles
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batman
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osceola new york
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Re: belt drive woes
Reply #16 - 01/15/20 at 07:19:08
 
  Stock final drive ratio is 2.956   17/45  drops it to 2.647 about 10.5% on your speedo reading   ex; 60 kph on your speedo will actually have the bike going 66.3 kph ( ticket time?)  the bike doing a true 60 the speedo will be reading 53.7 with your chain drive, but 10% should be easy to figure in you head ex; 60 -6=54 , 80 -8=72, 100-10=90 etc. ,  but you should see better mileage ,acceleration will be bit slower .
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badwolf
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Palm Beach County, FL
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Re: belt drive woes
Reply #17 - 01/15/20 at 10:30:07
 
The stock speedo is lets say ''optimistic''. Check yours against a gps app on your phone. Most find a 140/90 15 tire comes close to correcting it.
I went with both Kaw pulleys ( 2.60 ratio, 25 - 65) and a 150/90 15 tire, went 100 miles on the stock speedo, and gps said 123!
With big changes in final drive ratios the stock speedo is basicly useless.  I went with a Speedhut gps unit, $300, not cheap but accurate and gives me a tripmeter.
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DesertCat
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Re: belt drive woes
Reply #18 - 01/16/20 at 15:30:50
 
Checking final drive belt tension . . .

I know I saw this exact video on this site somewhere, but I can't find it again.

Oh well, here it is on YouTube:

https://www.youtube.com/watch?v=i2ZsZzTwRyk
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