
Originally Posted by
F5 Dave
Just done for a friend’s bandit. Ok it is the budget job, but the problem is the spring needs to be stiffer. You can’t compensate for heaps of extra weight without a stiffer spring. Guess this is pretty obvious.
First off. If the shock is leaking oil & pressure then it needs attn. A few people will rebuild them like cycleworks in Wgtn, Braun(?) engineering make new shafts if rqd, check back of Bikemart.
OK so you need to get a stiffer spring. Take the old one off & give to a spring maker along with the shock & say make me a stiffer one by say 25% which is a big jump but might be necessary. Jump on the Racetech website, they have spring calculators. If you don’t give the spring maker your shock they may make it so it almost, but doesn’t fit.
So how do you remove the spring? Be careful or pay someone. Can tell you how to do it, but it requires care & some mechanical nouce. Springs need some attn or they bite.
You can run but you cant hide from a stiifer spring ... Racetech site is good ...Its usually a good starting point ...for mx a few people find their settings a little ( a little ) soft ,
The advice about taking the old spring is dead on as spring inner dia change as the spring works ...
I would give them the force/ deflection ..Kg/mm number ,,which will be generated by the racetech calculator ,,,
and apart from all that ,,the oil in the shock would have broken down ,,,The Cbr damping rod is POO POO ..and the shaft/seals are probably crapped out
seals cheap , shaft about 120 ish dollars ( well CR ones are!!!) ..
and while you are at that CLEAN the front forks out ,,as the preload spacers rub on the spring then the crap keeps the shims apart and you lose all sorts of damping control ( only at high shaft speeds do you regain any sort of damping ,,)
The motor in those 94 cbr were good oil fed cam chain adjuster??? just as usual ,,,Honda penny pinched on the suspension ..( SuZuki MX bikes were bang on that year ,,,)
I am in the same boat ,,,the Engine frame werent that bad ,,ie good enough for my skills ,,but the suspension is utter crap ....I am even thinking of springing for ohlins ,,as in Ohdear how much ...
If I cant revalve these lot properly ........
Stephen
good luck BTW there are spring makers in NZ ,,but I had my springs made by ashcroft springs in England ,,the service was very prompt ,,and reasonable ,,NZ kept on giving me the fridayites excuses ,..so I just went elsewhere ....
Stephen
"Look, Madame, where we live, look how we live ... look at the life we have...The Republic has forgotten us."
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