Uprated Suspension?

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Stirling Morris · #1 Post by **Stirling Morris** » Sun Aug 24, 2003 8:02 pm

Anyone with experience of Rimmers uprated suspension kit RT1179 for the Sprint? 
I've just fitted the front Konis with 1" lowered/uprated springs but the car is sitting higher than with the standard set up! (I don't know by how much but I guess about 0.5"). I checked their free length and they were about 1" shorter than the original springs. As the springs are stiffer they obviously compress less but I was expecting the car to be lower. 
I decided to check the camber and it's about +1.4deg at both wheels, which is within tolerance, although it has increased due to the higher ride height. I'm am therefore thinking of removing one of the shims which will reduce the camber to about +1.1deg. 
Anyone with any views I would appreciate it.

SMIFTER · #2 Post by **SMIFTER** » Sun Aug 24, 2003 11:34 pm

Could a combination of different spring seat heights (Koni's are higher than many shocks) and settled standard springs

<a href="http://www.smifter1971.pwp.blueyonder.c ... >Smifter's Dolomite Sprint Website</a>

Richard · #3 Post by **Richard** » Mon Aug 25, 2003 8:03 am

I think that Steve1971 has had the same problems with rimmer suspension.

stevenhughes1971 · #4 Post by **stevenhughes1971** » Mon Aug 25, 2003 8:45 am

the car looked like ut had a jack up kit on it. side by side the springs are an inch shorter but on the car is another story. 
 
steve

Stirling Morris · #5 Post by **Stirling Morris** » Mon Aug 25, 2003 8:55 am

The seat height on the Koni is the same as standard, si I think the increase in ride height is due to the stiffer spring. The rating is 175lb and 1" lowered which is the same as Smifter's and his car looks lower than standard on the website. pics.

Stirling Morris · #6 Post by **Stirling Morris** » Mon Aug 25, 2003 9:35 am

Steve 
Did you find a cure? 
Pete

SMIFTER · #7 Post by **SMIFTER** » Mon Aug 25, 2003 11:39 am

BTW my car as photographed on isn't using that set up anymore - it now has 'proper' suspension ie AVO coil overs with 2.25" 400lb front springs and 250lb rears. 
 
Good on the track but generally a bit too harsh for road use.

<a href="http://www.smifter1971.pwp.blueyonder.c ... >Smifter's Dolomite Sprint Website</a>

stevenhughes1971 · #8 Post by **stevenhughes1971** » Mon Aug 25, 2003 9:55 pm

havnt got further into it yet pete as the car is in restoration at the moment. shall be onto it in about a fortnight and will let you know how i get on 
 
steve

Stirling Morris · #9 Post by **Stirling Morris** » Tue Aug 26, 2003 1:34 pm

Rimmer's response to the ride height is that the car should be 1" lower but that I need to drive the car a while to allow the springs to settle down. Another reason to get the car out the garage after a lengthy resto. I will report back in couple of weeks after I've used the car.

SprintV8 · #10 Post by **SprintV8** » Wed Aug 27, 2003 7:41 pm

I have the full Rimmer kit adjustable spring seat's on my Sprint, 
I did Replace the front springs with 210lbs because of the extra weight of the Stag engine, 
 
My Question is are those 175lbs rear springs too hard or what my Sprint bounce's down the road on them, 
Has anyone tried anything else 
Shock adjustment is backed right off, 
 
Thanks Phillip 
1980 Dolomite Sprint V8 
2000 Suzuki hayabusa GSX1300R 
2002 Husqvarna SM570R Supermoto

Dave · #11 Post by **Dave** » Thu Aug 28, 2003 12:27 pm

I allways understood that having the rears roughly half the rate of the front produced the desired compromise....

IRL1177NI · #12 Post by **IRL1177NI** » Thu Aug 28, 2003 2:28 pm

If your dampers are slackened off then surely this will cause the "nodding dog" syndrome where the dampers aren't damping the sping effectively. Of course if the springs are genuinely too stiff, firming the dampers will leave the tail skittish. Didn't they always say dollies were a touch skittish at the rear. 
 
 
Tom 
 
ps anybody know of any 1500/1850HLs around Wales or nearish to the ferryports?

SMIFTER · #13 Post by **SMIFTER** » Thu Aug 28, 2003 4:00 pm

For a road car the standard rear springs with uprated dampers are fine (rated at 139lbs). The problem is you wont lower the car that way without adjustable platforms. 
 
The 'rear at half the rate of the front' rule seems to work quite well from my experience - I've also found the handling less twitchy and traction better with the dampers turned down at the rear at about 1/2 the front rating as it allows the back end to squat down under acceleration moving the weight balance back. 
 

<a href="http://www.smifter1971.pwp.blueyonder.c ... >Smifter's Dolomite Sprint Website</a>Edited by: <A HREF=http://pub52.ezboard.com/bthetriumphdol ... SMIFTER</A> at: 28/8/03 10:08 pm

Dave · #14 Post by **Dave** » Thu Aug 28, 2003 5:36 pm

I understood that was part of the reason for the standard car having a slightly nose high attitude encouraging a better weight balance/ shift under accelleration.Has anyone ever worked out the front rear weight proportions with a lowered sprint? Not that I can remember what the standard one is....?

SprintV8 · #15 Post by **SprintV8** » Thu Aug 28, 2003 6:32 pm

Cheers for the info, 
 
I will try and swap spring's over before Sunday,

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