28-07-20, 12:48 PM
(28-07-20, 12:07 PM)Grahamm link Wrote: Perhaps I should clarify: I'm not going to be using the PVC permanently :eek
It could crack/collapse the fist time you hit a bump or brake and riding around like a little old lady isn't going to give you the feed back you need, but hay it's your life mate, but have a thought for others.
Quote:
Once I've got the spacer the right length to get the sag correct (I've also bought some penny washers for fine adjustment), then I'm either going to cut down the OEM spacers or get some new ones made up :thumbup
As long as they're not cheap DIY washers made of cheap Chinese metal and they're at least the same dimensions as the standard washers, that would be okay. If not they will buckle, be squashed and possible jam, even be sheared though over time.
Quote:I don't think so. I looked at this carefully for quite a while and the OEM springs are a) 14 years old and b) too soft anyway, so I wanted something that had a bit more resistance, but simply adding preload to the existing ones could have resulted in the spring becoming rigid under hard braking.
That's why you need the correct weighted spring for your weight, to give you the right sag. Chances are even with standard springs the sag isn't correct, most are set up for a Jap tester who is around your weight, so it will be the damping that's wrong. Many owners/riders have their bikes set way too hard dampening wise, also what's going on at the back end has a big effect to what's happening at the front.
Quote:Hyperpro supply 15W fork oil with the springs, but that will, of course, only affect the damping, so I'll wait until I've got the preload right before I start playing with that.
Hyperpro supply a spring which is normally 10- 20% higher than standard, if that spring weight is more than your weight requires, no matter how much you cut off, it wont effect the strength, only it's travel over a given distance. If the spring is progressive an you cut the wrong end off it will in a dramatic way. Also if you in/decrease the spring you alter the rake which again effects the handling.
Quote:Also, of course, if I get too much dive, I can adjust the air gap, but that's the last stage.
I did try out the new springs, taking the bike up to 60mph and then doing a hard stop (not quite full on emergency stop) and I'm using about 80% of the maximum fork travel, which is ok.
No, dive is or high speed damping is controlled by the shim pack not the air gap, by reducing the air gap all you're doing is slightly increasing spring pre load, which in your case is too high already.
As I said above it's your life, you may get away with all of it, but if you don't someone could well have to come a clear you off the road. Even if you do get away with it, you won't get a good set up, but it's all up to you.
Later