What's the problem here?

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dandywarhol
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Re: What's the problem here?

Post by dandywarhol » Wed Jun 17, 2009 8:34 pm

Nobody's mentioned that preload sets the ride height and only when the fork has topped out with no sag does the preload start to have an effect on the spring :?
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

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Greg
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Re: What's the problem here?

Post by Greg » Wed Jun 17, 2009 9:41 pm

Errrrr.....
It's a lot easier to look at the pre-load adjuster more as a ride-height adjuster
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Brake cleaner makes me smile...

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dandywarhol
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Re: What's the problem here?

Post by dandywarhol » Wed Jun 17, 2009 10:37 pm

Ahhh....must've missed that one - sorry chap :oops:
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

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idl1975
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Re: What's the problem here?

Post by idl1975 » Thu Jun 18, 2009 9:28 am

dandywarhol wrote:Ahhh....must've missed that one - sorry chap :oops:
Looking at the fork this morning, it seems to have about 5mm of sag. The forks are basically topped out, and it makes hardly any difference when you sit on the thing. I wound out two bars of preload to 6 showing, and the only difference is that the fork gets moving quicker (as you'd expect). It's better in that it pitches weight onto the front a tiny bit more progressively, but obviously there's something going on with the forks - someone's put on monster springs with a progressive winding to boot, or someone's been buggering about with the oil level/air gap. Zero difference in terms of travel.

Looks like I'll be pulling the forks on Saturday and extracting the springs. #-o Assuming the rate is wrong, I'll get our local spring manufacturer to do me a set (been quoted £42 for the pair, which is pretty good I reckon).
-----

'04 Aprilia Tuono Fighter
'00 Scooby Sport Wagon

'76 TY250.

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