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R1 fork service.
Posted: Thu Jan 20, 2022 9:41 pm
by Bucko
Hello, I’m servicing the R1 4XV forks fitted to my TRX, they have always felt a bit harsh for normal UK road use for me. Has anyone got any recommendations for oil weight, air gap, spring specs and just general settings for the preload, compression and damping, thanks Steve.
Re: R1 fork service.
Posted: Fri Jan 21, 2022 4:04 pm
by jjmoto
had mine set up at MCT for my weight (11st) got all the details somewhere can WhatsApp them over
Re: R1 fork service.
Posted: Sun Jan 23, 2022 5:27 pm
by Bucko
Thanks, I’ve put 10W oil in , but slightly less than recommended to give an air gap of 85mm, recommended is 78mm, will probably try a touch less preload, compression and rebound too.
Re: R1 fork service.
Posted: Sun Jan 23, 2022 7:43 pm
by jpe70
Bucko wrote:Thanks, I’ve put 10W oil in , but slightly less than recommended to give an air gap of 85mm, recommended is 78mm, will probably try a touch less preload, compression and rebound too.
Preload is basically height, just set it to about 35 mm static rider sag to start with. Then try out Comp and Rebound. Keep in mind that what you change is the SPEED of the movement, not how much it moves. So if the ride is too harsh, you could have too much Comp making it slow to react and too little Rebound making it bounce back too fast. For example.
The lesser oil amount you have put in will also make the fork less progressive, meaning it will slow down less at the end of the stroke.