i am about to sell my 954 Blade and will be removing the Ohlins rear shock, does anyone know if this can be made to fit the Blackbird?
Also the spring and damping on the 954 shock will be too soft for the BB
How do you come to that conclusion ? You may well be right but I cant see how you got there :dunno:
I agree on the lengths by the way :-0)
How do you come to that conclusion ? You may well be right but I cant see how you got there :dunno:
I agree on the lengths by the way :-0)
Thanks for the info, so its back to plan A flog this one and buy a Bird specific one
The 954 has a 14.6kg/mm rear spring from the factory
The BB has a 16.8kg/mm rear spring from the factory
That puts the 954 spring around 15% softer than the BB and the BB is generally under sprung anyhow.
Damping is there to control the spring so it would make sense that the damping is probably 15% lower as well.
Which means exactly nothing as its a different set up with different rising rate & different length swingarms acting on them :-0) as usual people forget leverage & the fact that a full on sports bike is liable to be set up stiffer as stock than a lardy sports tourer
Still you are probably correct in your assumption but to state its going to be soft without doing the maths fully is misleading imo, no doubt jaws will be along to give us ratio's etc soon :-0)
Not all assumption.
Based on various spring rate calculators - a 14.6kg/mm spring on the rear of a blackbird is good for a 51kg ( 8 stone ) rider
Where as a 14.6kg/mm spring on the rear of a 954 is good for a 75kg ( 12 stone ish ) rider
If the 14.6kg/mm spring was correct for the OP on a 954 and assuming he hasn't lost 24kg overnight - it would be too soft for him on a BB.
Still missing the point mate :whi5tl: research rising rate suspension, then think about what you just wrote :-0)
Then I guess everyone else out there recommending spring rates has it completely wrong too.
Never mind - I will stick to what I know works.
Nobody said you were wrong, the point you seem to be missing is that your opinion is based purely on spring rates when that is not the only factor at work here
Sure if swapping different rated springs on the same bike your theory holds up but not always if swapping a spring/shock from one model bike to another
Simple enough ? :-0)
Not just based on spring rate
The 954 and the BB both have a 3:1 axle to shock ratio.
Agreed the BB probably has a steeper rising rate than the 954 but using such a soft spring will have the bike sitting quite a bit further down at the rear compared to the correct spring.
And another point from your post above if a fireblade was set up as stock to carry the weight of the bike plus X amount of rider & that alone as you seem to suggest what do you think would happen when adding X amount of pillion? a soggy unrideable mess? that simply does not happen