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lemonjelly
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nice pairs on Ebay at moment too.Is ?265 too much?
lemonjelly said:nice pairs on Ebay at moment too.Is ?265 too much?
GregT said:I always have a quiet shudder when people talk about putting early GSXR 750 rims on heavy bikes. i was involved in racing those things when they were new and saw far too many bent rims for comfort...IMO the 18inch 750 front rim is way too flexible for anything heavier than the 750 - and even on that it's marginal. In period I saw several which were bent from tankslappers...that was a speciality of the '85 model in particular.
The 1100 18 inch rims are way better and I'd endorse the use of those happily.
sfcpiet said:Had much the same thoughts when first fitting them, Greg.
In comparison, the Suzuki is far quicker and has stronger, stiffer forks and a stiffer headstock. Turned out it wasn't strong enough, but still stronger than a Laverda imho. I'd consider the shock loads to the wheels to be quite a bit higher on the Suzuki. The GSXRs quickly put on weight too!
The long, weedy Marzocchis, the Cerianis even more so, along with the stock, bendy Laverda headstock soften the road and braking load shocks to the wheels to a large degree, the bikes are a lot slower and the brakes not as harsh (normally), but the bikes considerably heavier.
Reckon the overall loadings are quite comparable, but do agree the 2.75" 1100 front wheels are quite a bit stronger.
The 2.50" 750 front wheel in my RGS has proved itself over more than 20000km, mainly by my not noticing it being there, it simply works that well! Only trait the RGS shows that I have yet not been able to iron out, is a hefty shimmy evolving around 80kmh with partially worn tyres. But it did the same with the stock front rim, so that cannot be blamed on any weakness of the GSXR rim. I have experienced similar with quite a few other RGS as well.
I consider a 150 tyre on the 4.00" rim as maximum. It can be used to full advantage, with no chicken strips remaining if the bike offers enough ground clearance. A 140/70 would be the best for the 3.5" rim, the 160 slick I sometimes fit can only be used to about 70% of its width.
piet
sfcpiet said:I consider a 150 tyre on the 4.00" rim as maximum. It can be used to full advantage, with no chicken strips remaining if the bike offers enough ground clearance.
piet
sfcpiet said:The 2.50" 750 front wheel in my RGS has proved itself over more than 20000km ,,
GregT said:Fair enough, you've had no problems - i do wonder about the same wheels on NZ or Aussie roads though. We both have some pretty rough stuff - and both often go off tarmac too.
Back in the day we used to straighten the bent rims - usually the spokes close to the hub - and try to swap them onto a road bike. The good straight ones were reserved for the race bikes. Given they're castings I have often wondered at the ductility of those wheels...How many times can you straighten them......