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SOHC.co.uk Forums => CB500/550 => Topic started by: wolfheze on August 07, 2014, 08:07:26 PM

Title: replica shock absorbers
Post by: wolfheze on August 07, 2014, 08:07:26 PM
Hi all. Has anyone tried the replica shock absorbers from silvers? I have a K2 with aftermarket shock absorbers which are too long. Although they seem fairly well sprung and damped the increase in rear ride height is causing some interesting high speed stability issues ! Would like to sort this out but not at the expense of a wallowy rear end.

               Many thanks.
Title: Re: replica shock absorbers
Post by: Trigger on August 07, 2014, 08:18:03 PM
The ones DSS sell are bloody expensive for what they are. Try a guy on ebay, goes by the name of 101 Turbogas. Fitted a few of his shocks with no complaints.
Found a link>>>   http://www.ebay.co.uk/itm/321484928581?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Title: Re: replica shock absorbers
Post by: Ewan 500 K1 on August 07, 2014, 08:26:55 PM
hey Wolf ... do you get front end tank slapper tendencies and what lenght are the rear shocks. Got some tank slapping tendencies with +48mm shocks masel
Title: Re: replica shock absorbers
Post by: wolfheze on August 07, 2014, 08:37:03 PM
Ok thanks for the quick response!

I will check out the ebay guy. Yes above 80 mph it starts to feel distinctly unstable. although dosent feel as though its going to develop into a full blown slapper it is a little disconcerting and quite tiring to ride. shock absorber length is 13.5 inches. I think standard ones are 13 ?.
Title: Re: replica shock absorbers
Post by: Bitsa (Ralph Wright - RIP) on August 07, 2014, 08:45:55 PM
I bought a set from silvers a while back 3 years or more,as for handling all I can say they are fine up to 70mph never gone any faster than that I am in no rush here.
Cheers
Bitsa
Title: Re: replica shock absorbers
Post by: Ewan 500 K1 on August 07, 2014, 08:56:01 PM
.. standard rears are 315mm on the 500, Hagon do one that suits. Probs do one for 750 too
Title: Re: replica shock absorbers
Post by: hairygit on August 07, 2014, 09:13:48 PM
Before you condemn the existing shocks, do a thorough test on the swinging arm bushes and rear wheel bearings if you haven't already done so. Knackered swingarm bushes can also cause the symptoms you describe, and I don't think half an inch longer shocks would make that much difference.
Title: Re: replica shock absorbers
Post by: wolfheze on August 07, 2014, 09:41:37 PM
Already checked bushes and bearings, seem to be ok. Is better with a passenger [lower ride height] so am thinking it is a geometry problem. sure i read somewhere 70s cb already had a short trail by the standards of the time.I am used to more modern bikes when a few  mm of ride height will make quite a big difference to the steering.
Title: Re: replica shock absorbers
Post by: Ewan 500 K1 on August 07, 2014, 09:54:28 PM
... remember reading that trail varies acroos the 750 models. If I remember right its the later ones that have the shorter trail ... damned if I can remember where I read what the differences between models though ... but i'd agree that an extra half inch at the rear end doesn't seem that much . Could you borrow a standard set off someone first to see if it makes a diff ?
Title: Re: replica shock absorbers
Post by: wolfheze on August 08, 2014, 04:49:03 AM
Could be worth trying some standard ones first, i know where i can borrow a pair.
Title: Re: replica shock absorbers
Post by: SteveD CB500K0 on August 08, 2014, 04:07:48 PM
Where are you?

Put your location in your profile.

I've got a set of 550F shocks in the barn.

Steve
Title: Re: replica shock absorbers
Post by: Bryanj on August 08, 2014, 05:32:14 PM
My memory could be wrong but i think when it was Girling making the shocks all the fours were listed as the same shock with different springs
Title: Re: replica shock absorbers
Post by: wolfheze on August 09, 2014, 05:07:09 AM
Have managed to aquire a pair of dampers that dont look to have seen much use.
They have some very light pitting on the shrouds, is it possible to take them off for recroming?
Title: Re: replica shock absorbers
Post by: Bryanj on August 09, 2014, 10:19:01 AM
Yes but be carefull
Title: Re: replica shock absorbers
Post by: wolfheze on August 09, 2014, 12:23:55 PM
How do they come off? Dont worry i will be careful, mate had a jaguar spring smash his jaw when a spring compressor failed.
Title: Re: replica shock absorbers
Post by: Trigger on August 09, 2014, 06:37:06 PM
Best to take them apart in a press. The damper rod will need hard chrome.
Title: Re: replica shock absorbers
Post by: wolfheze on August 09, 2014, 08:03:40 PM
I am fairly certain that the damper rod will be fine, like i said the dampers look almost new, the only thing wrong with them visually is some very light pitting on the shrouds.
Title: Re: replica shock absorbers
Post by: Bryanj on August 10, 2014, 04:06:52 PM
You have to pull the shroud down along with the spring then the retaining collet(s) will come out
Title: Re: replica shock absorbers
Post by: wolfheze on August 10, 2014, 06:17:26 PM
Ok thank you
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