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Discussion Starter · #1 ·
I am looking at different options for springs on my IT car, the way I see it I have a couple of options for the front spring.

1) Get a stiffer front leaf made...from reading if I go to a lowered spring made around 2 inches or so lower and around 450lb. If I do this and attach it to the stock mounting points I think that I will still have the binding, would that be correct.

2) Get a stiffer front leaf made, stock curve and use a shackle to lower the car down to where I want it, as I understand it that spring will have to be a little stiffer around 550lbs. This would remove the binding, would this be a better way to go.

3) the rear of the car is easy...I was thinking of starting around 200lb or so on the rear.

If there is a better idea on how to do this please let me know...I would like to do this one time...but I know from past experence that I was always playing with springs on a race car...(maybe not anymore with that front leaf)

I have seen mention of a fiberglass front spring could anyone give me some more info on that.

Thanks for your help
gregory
 

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Jim MacMahons ITB GT is probably the fastest ITB car in the north east and possibly the fastest IT Opel in the country. Though he's never raced against Bob D so it's hard to say. Anyway, he runs 200lb rear springs and a 500lb fiberglass front spring. The fiberglass springs originally came from RallyBob but are rumoured to be available from Suselbek now. They "borrowed" Bobs design without his permission, or at least that's my understanding....

-Travis
 

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Discussion Starter · #3 ·
Does RallyBob still make the springs or is the only place to get them from Suselbek? I have not heard of this company before, if it is the only place to get it could you give me some contact info. Should I run the shackles with the fiberglass spring? The only thing worse then "borrowing" someone elses work is claiming that they invented it. If this is indeed the case I will just have a steel spring custom made myself....The other would be nice...I would guess it would be quite a bit lighter.
 

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Discussion Starter · #5 ·
Someone else out in Opel land must want some springs besides me.

RallyBob can you give me the info on the spring...was it a 500lb spring? how far did it drop the car, did you use shackles with the spring?...and the biggie how much where/would they be. I can always have a spring made up and if you get enough requests just order then. But one of my questions is should I do the drop with just the spring or should I go to the shackel and a stock height spring?
 

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Bob -- I’m definitely interested in a fiberglass spring. I have a set of sport springs (front and rear) that I bought from “Manta Part” in Youngstown, OH in the early 80’s. Never installed them, but I had planned to this winter (was going to get them powder coated next week). The setup with the fiberglass spring sounds like a much better arrangement.

I'm a GO!

Thanks
 

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Fibreglass Front Leaf

Bob, If I recall correctly, you once said that the fibreglass spring eliminates or greatly reduces the "binding" that occurs with the stock steel multi-leaf (without shackles). What's different in the design to facilitate that?

Also, is the 500 lb spring rate far too high for street use? I would presume so. Could they be made with a lower rate, and maybe less drop (say 300 lbs and a one inch drop)? Didn't Gil at OGTS used to sell a fibreglass spring for street use?

It occurs to me that some of these "group buys" might better be facilitated through someone like Gil, so that the volumes might be increased and they can be made available to the greater Opel population. And for a longer period of time. JM2CW
 
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