allen Posted May 18, 2001 Share Posted May 18, 2001 I have a quite non standard 7 - live axle, Spax Dampers. 1800 Zetec (about 20 KG heavier than the old xflow) Springs 280 front 110 rears. Rear axle (ford) is not located using A frame, it uses 4 radius arms coming forward, picking up in the chassis sides about in line with the dash, with a fifth link locating side to side movement of the axle from the nearside end of the axle to the offside chassis. (not an uncommon racing mod at one time I believe). So, two questions:- Firstly - My current ride height at the rear is low, loaded up it frequently bottoms out. I have now purchased adjustable spring platforms for the shocks. I have checked the old technical forum posts and understand standard ride height settings (155 & 140, 10 to 15mm difference between front & rear). I believe this to be in part due to the location of the low Aframe mounting to the axle. Does the advice hold true for my set-up? Secondly - Comfort wise I am fairly happy at the rear spring rate, and am considering progressive rate rear springs (having looked at the 7gallery I note that Brent Chiswick has a 2litre zetec life axle and is running progressive rate rear springs) – Advice please, what are suitable, will they fit my Spax shocks, where can I get them etc. Thanks in advance Allen Edited by - allen on 18 May 2001 12:27:14 Link to comment Share on other sites More sharing options...
I.Mupferit Posted May 18, 2001 Share Posted May 18, 2001 Hi Allen Yes I have got progressive rate rear springs. Mine came from Caterham fitted to Bilsteins but I see no reason why they shouldn't fit Spax shockers as well. Ride height on these springs is about 175 mm measured just in front of wheel arch from ground to u/side of chassis. Slightly higher than on standard springs due to the initial compression on the lower rate part of the spring. Makes quite a difference to the ride on a live axle. Brent Link to comment Share on other sites More sharing options...
allen Posted May 18, 2001 Author Share Posted May 18, 2001 Thanks Brent, don't s'pose anyone knows rates of these progressive springs? What did they cost? Did you leave the front ride height the same? Regards, allen Link to comment Share on other sites More sharing options...
Mike Bees Posted May 18, 2001 Share Posted May 18, 2001 The ones Caterham supply on the De Dion cars are 110lb/in at their softest, around 150-160lb/in with a normalish driver on board, around 180lb/in with 2 people on board and a bit over 200lb/in when the bumpstop intervenes. Mike Link to comment Share on other sites More sharing options...
I.Mupferit Posted May 18, 2001 Share Posted May 18, 2001 Allen See Mike Bees reply for spring rates thumbsup.gif. Front ride height remains standard i.e. 120mm. Can't remember the price as I bought them complete with the shocks. Brent Link to comment Share on other sites More sharing options...
allen Posted May 18, 2001 Author Share Posted May 18, 2001 Thanks Brent and Mike, question on progressive springs now answered. Much appreciated.biggrin.gif Returning to the first question - Anyone know about front/rear ride height on non A frame cars? Thanks again Link to comment Share on other sites More sharing options...
John Posted May 18, 2001 Share Posted May 18, 2001 What size wheels / tyres are you running? John Link to comment Share on other sites More sharing options...
allen Posted May 21, 2001 Author Share Posted May 21, 2001 John - running 185/70 x 13, thanks in advance. Regards, thumbsup.gif allen Edited by - allen on 21 May 2001 08:19:07 Link to comment Share on other sites More sharing options...
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