14-03-17, 08:01 PM
(13-03-17, 08:58 PM)Ricky link Wrote: Hi Graham your bike comes with progressive springs as standard, so they are what the bike was designed to run on. I have Hyperpro progressive springs in mine and Luke R6 shock kits. Had problems with mine to start with , spoke to Luke and he'd spent a lot of time helping me out, but the front settings back from Hyperpro settings to the Yamaha standard settings and very very much improved, will now run and see how I go.Do not give up, I think you're mechanics have got some thing wrong, speak to Luke he really knows his stuf and I am sure will help you out. Good luck.
I was told that the FZS 600 came with Progressive springs as standard, but in fact they are not progressive they are 'Dual Rate' springs please see photo of the springs i removed from my FZS 600.
Progressive Spring as the name implies change rate slowly from one end to the other (Slow change in the pitch of the spring from one end to the other) = smooth increasing compression transition, stiffening throughout their length, should equal better handling.
Dual Rate Spring (See picture) again as the name implies two compression rates, after the initial softer rate is overcome the second harder or stiffer rate come into play causing changes in the motorcycles geometry (Especially when cranked over into a bend and hitting undulations in the road surface) = arse clamping up and nasty marks in your Y fronts.
See the piccy and the spring rate changes at the place my finger is pointing.
My understanding is that progressives are a vast improvement on the Standard Yamaha Springs, but it is a 'One Spring Suits All' situation
Ideally one spring can not suit a 9 stone rider and the same spring suit a 20 stone rider, it will always be a compromise.
With Linear the spring rate stays the same throughout the total length of the spring,
of course progression still comes into play but it does not change rate = better stability, constant contact and feel and little or no diving in or running wide on a bend because of geometry changes because of bumps and lumps mid bend. You purchase the spring rate to suit your on board rider weight.
Please remember these rantings are only my opinion and lots of others will have differing opinions, its a bit like tyre choice, brake pads, engine oil, air filters, braided lines, (Only it's nothing like those choices really I am just saying that to patronise you) but of course when it comes to bike colour choice it's SILVER every time = no choice :lol
Lots of very cleaver guys on here when it comes to suspension Kabab19 and Devilsyam for a start, look up their writings and thoughts on the subject, me I'm just a newbie, still learning and still getting it wrong sometimes.