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Dirt Full Roller

Total posts: 71
posted July 13, 2004 03:39 PM  
Not to sure what I need or if they make them. My left rear spring seems to be to short but not really. I need a sping that is pretty long but will colapse a ways before gettting to its actual rate. My left rear sping will float by about 4 inches when the car rolls over or just by jacking it up. It needs to be this low to get the ride hight i need. Does anyone know what I am talking about and where I could get anything like this. Thanks

unregistered Total posts: 71
posted July 13, 2004 05:01 PM           send a private message to ModMan43   Edit/Delete Message   Reply w/QuoteBBBBBB
Sounds like you're after a progressive spring, but I think those are illegal except in a spring arm. Tallest spring I've seen is 16", but it's a normal rating. If you are running weight jacks you can get a longer jacking bolt, or deeper cups for the springs.

#13 mod
Dirt Full Roller

Total posts: 72
posted July 13, 2004 09:09 PM  
Use a spacer at the top of your slider to keep the top hat inplace. Also use zip ties to attacht the spring to the hats so that everything stays inplace when there is no weight on the sping. 13" springs should be enuff height on a mod.....

Dirt Full Roller

Total posts: 71
posted July 14, 2004 10:04 AM  
If I am thinking about this correctly i can't just get a longer spring. If i get a longer spring then I would just lower the nut on the bottom of my slider creating the exact same thing that I have now just a little lower. I do have my spring strapped to the top hat and the lower seat strapped to the spring. I am just a little worried that the threads on my slider is going to wear out from every time the car sits back down. Are you supposed to have pressure on that spring at all times? Or is it alright for it to float.

Dirt Freak

Total posts: 357
posted July 14, 2004 10:16 AM  
sounds like you are looking for a take-up spring. It is a flat spring made in variuos hights by Afco. This will allow spring alignment and not affect your spring rate and ony add 1/4 to 1/2 inch on overall hight of spring, just use your adjuster to make that up. Hope this will help. We use them all the time on our front springs.

Dirt Maniac

Total posts: 192
posted July 14, 2004 04:35 PM  
Unfortunately, IMCA modified aren't allowed to run progressives springs or a take up springs, ( one spring per wheel, progressive only on the pull bar.
You can run a longer softer spring, to keep your ride heights the same, and still keep some load on the spring as the rear end raises.

Dirt Forum Champ
Total posts: 1875
posted July 14, 2004 08:28 PM  
increase indexing if your on a 4 bar, or just make a cone or something to set the spring back on the seat.

Dirt Freak

Total posts: 324
posted July 14, 2004 08:51 PM  

Dirt Full Roller

Total posts: 65
posted July 15, 2004 02:51 PM  
We had a problem with the left spring coming out of a 4 bar car. Can't remember who makes them, but you can get a spring hat/bucket with an extended 3-4" collar that will make sure the spring stays in place when the car gets up on the bars. The second time our spring came out, it broke the zip ties....never did find the spring bucket (isn't it weird what can be lost on a track! Somebody with a metal detector could probably dig up a couple cars). Anyway, then you don't wind up with a soft spring just to get the right ride height. You could probably make you own.

Dirt Full Roller

Total posts: 35
posted July 15, 2004 06:25 PM  
If it is ad afco slider weld a short piece of 13/4 tubing to the nut. The slotted spring hat will float over the tubing but wont slide off KC

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