SOHC.co.uk Forums > CB500/550
These cb550 K3 (uk) fork springs
Oddjob:
F2 got them Dom, F1 didn’t.
F2 and K3 share loads of parts.
deltarider:
--- Quote from: nairb on January 13, 2025, 01:28:48 AM ---[...] The front end seems to be a bit spongy. [...]
--- End quote ---
I wish I had a bit of sponginess. ;) Mine have always been a bit spartan.
Bear in mind, that Honda marketed the K3 as the tourer version of the CB550s and that Americans want cushion in their ride.
BTW, what have you set your rear shocks at?
nairb:
--- Quote from: deltarider on January 15, 2025, 08:53:31 AM ---
Bear in mind, that Honda marketed the K3 as the tourer version of the CB550s
--- End quote ---
Well, it has been to the top of Italy a couple of times. And Paris 3 times and ..... Anyway, I suppose that makes it a tourer?. Great bikes.
All those years ago it seemed so easy. Chuck your lady on the back and off we went. Being 40 years younger might have helped.
Those rear shocks. I have had them to bits for cleaning and checking. I think they were set on one notch down from the max setting.
Great bike for pottering down the country lanes. Sponge or no sponge
nairb:
Conclusion:- Having checked both fork springs, I found 1 to be 5mm shorter than the other.(478mm vs 473mm).
I decided to re-use them but turned them the opposite way up - with the compressed part of the springs at the top of the forks. I was never sure which way they should go anyway?.
I used 145 cc of medium fork oil. Which is more oil that before. I didn't have enough ATF fluid.
They do seem to be better. Only a ride out in better weather will tell.
Thanks
Nairb
Oddjob:
What weight is medium? 5w 10w or 15w for instance. I wouldn't use ATF these days in forks, ok in the 70s but fork oil has progressed a lot since then. Personally I'd have put a set amount in one fork leg, measured the air gap and then used that to set the other, it makes sure they have the same amount of oil in each leg.
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