drunkn munky Posted March 5, 2009 Report Share Posted March 5, 2009 Im going to rebuild the forks on my 748 myself and replace the springs with some suitable for my weight, how do i know what spring rate to go for and what weight oil and air gap i need??? Link to comment Share on other sites More sharing options...
Bat Fastard Posted March 5, 2009 Report Share Posted March 5, 2009 Dunno fella, Perhaps give Maxton or K tech etc a call. Or give a good Ducati dealer that races a call. Maxton used to do my 748 forks for me. If you buy the springs etc from em then they should only be to happy to help you out id of thought?? Link to comment Share on other sites More sharing options...
lorenzo Posted March 5, 2009 Report Share Posted March 5, 2009 When I resprung my forks on the VFR i called these guys. I'd read about them in the mag and saw that he'd told the mag that if the spring rate's wrong he'd take 'em back and swap for a better rate. So I rang him, described what I'd got and what i wanted, springs turned up about 3 days later and they were perfect, static sag spot on first time. Couldn't recommend him highly enough. Link to comment Share on other sites More sharing options...
2 smokes 4 ever Posted March 8, 2009 Report Share Posted March 8, 2009 Im going to rebuild the forks on my 748 myself and replace the springs with some suitable for my weight, how do i know what spring rate to go for and what weight oil and air gap i need??? spring rate - try racetech.com as they have an on line calculator here find your bike, enter your weight and riding style and it tells you the spring rate required Depending upon how heavy you are, its gonna be about 0.9kg/mm As std it says they are 1.02kg/mm which is very hard for the road unless you weigh about 20stone for me (200lbs) it comes out with 0.91kg/mm which means using 0.90kg/mm Oil weight - go std to start with Damping has to match the springs, so you can't set the damping til the springs are correct If you run out of adjustment on the rebound/compression then you will have to change oil weight Air gap - go with std til you understand what your forks are doing air gap tuning is the last thing on the list - get your springs and damping set first Link to comment Share on other sites More sharing options...
sparx55 Posted March 9, 2009 Report Share Posted March 9, 2009 spring rate - try racetech.com as they have an on line calculator here find your bike, enter your weight and riding style and it tells you the spring rate required Depending upon how heavy you are, its gonna be about 0.9kg/mm As std it says they are 1.02kg/mm which is very hard for the road unless you weigh about 20stone for me (200lbs) it comes out with 0.91kg/mm which means using 0.90kg/mm Oil weight - go std to start with Damping has to match the springs, so you can't set the damping til the springs are correct If you run out of adjustment on the rebound/compression then you will have to change oil weight Air gap - go with std til you understand what your forks are doing air gap tuning is the last thing on the list - get your springs and damping set first If you have the ohlins forks, they are a bit harsh on the road, Unless youre massively heavy, or racing, i found in the past that 5w oil and 80mm air gap works better than the stock 7.5 / 85mm set up. ( ohlins measure with the springs in) As for the showas, i don't know Mark Link to comment Share on other sites More sharing options...
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