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| Has anyone converted an 1125R to CR gearing https://ukbeg.com/forum/viewtopic.php?f=7&t=14492 |
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| Author: | coppersaucepipe [ 21 May 2012 21:41 ] |
| Post subject: | Has anyone converted an 1125R to CR gearing |
What difference did it make to performance? |
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| Author: | sportster_mann [ 22 May 2012 11:05 ] |
| Post subject: | Re: Has anyone converted an 1125R to CR gearing |
the CR accelerates slightly quicker - but runs out of "steam" earlier. The gearing does make a CR more rideable round town though. To do it you will need to change the sprockets, swing arm and belt, and it will need a reflash to a CR ECM - can't remember if the IC need updating as well or if it's covered by the ECM ... ... or IIRC, a guy in the States made up a new tension pulley with a different diameter and kept the existing swing arm - the info will be on BadWeatherBikers somewhere. |
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| Author: | coppersaucepipe [ 22 May 2012 12:13 ] |
| Post subject: | Re: Has anyone converted an 1125R to CR gearing |
Thanks for that, I was expecting to have to mess about changing the swinging arm or tensioner pulley so I guess I'll stick another standard belt back on. |
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| Author: | pash [ 22 May 2012 12:43 ] |
| Post subject: | Re: Has anyone converted an 1125R to CR gearing |
What is different about the swining arm then? |
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| Author: | kevmean [ 22 May 2012 12:51 ] |
| Post subject: | Re: Has anyone converted an 1125R to CR gearing |
pash wrote: What is different about the swining arm then? The length I believe. |
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| Author: | sportster_mann [ 22 May 2012 13:14 ] |
| Post subject: | Re: Has anyone converted an 1125R to CR gearing |
IIRC the CR swing arm is about 5 mm shorter than the R. |
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| Author: | coppersaucepipe [ 22 May 2012 13:34 ] |
| Post subject: | Re: Has anyone converted an 1125R to CR gearing |
sportster_mann wrote: IIRC the CR swing arm is about 5 mm shorter than the R. Which is almost certainly too much additional slack to take up with a Willy tensioner. 5mm would equate to more than "a couple of flats" adjustment on a chain set up. |
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