SOHC.co.uk Forums > CB500/550
CB550K3 - Fork Springs - Which way up?
deltarider:
I'm not sure. I recently got the advice (German site) tight coils should be up on my CB500. For the effect one would say it doesn't matter but you want to avoid unnecessary unsprung weight.
ka-ja:
Hi,
It well may be that Honda springs have the tight coils at the bottom, but I have just fitted Hagon progressive springs on my 400/4, and they advise tight coils to the top!---Ken
Lobo:
Well, funny old thing, because when I first looked at the 500/550 manual it showed the springs tight coils UP. I then noticed the thread was CB550.... and went to the CB550 differences / addendums where the springs are tight coils pictured DOWN.
And most bloody helpfully, the blurb in both cases simply says, "Reassemble as they came out"
Anyways, here the pic of the CB500 springs, appearing, as I say, UP.
And my Cb400F parts manual shows a constantly wound coil - no ups / downs... but note that you're 'upgrading' Ken!
There must be a physical reason for all of this... I'm trying to think (eg) tight / dense / ineffective coils lower most to lessen sprung weight... or is there some mechanical restriction in the legs themselves which would inhibit compressions anyway, or maybe differing road conditions / export models would require inverting the springs (yea, grabbing @ straws)....there must be some logical reason...
deltarider:
The 500 had various front legs. I remember decades ago a Honda mechanic and I looked at a view of the front legs and he commented: don't look at the picture, it is wrong. The stupid thing is I can't recall what picture it was, so I know nothing...
Lobo:
.... maybe just play, er safe... and put one up & one down....
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