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Discussion Starter · #1 ·
Most buggy, 3/4, or goofy setups I've seen are only active on droop. What if you set them up on a 1/4 leaf setup and they were active throughout their travel? Kind of like the dual rate coil over setups. The only drawback I can see is you might have to set up a track bar.
 

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hmm, interesting I idea. I am already linked in the rear, maybe I'll try it. But to be sure we are talking about the same thing here..... Are you saying have the buggy leaf cantilever past the end of the frame so you can get up travel out of it as well?
 

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Discussion Starter · #3 ·
Either past the end of the frame, or spaced down from the frame and a normal shackle length, so you would get travel both ways.
 

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seems like alot of trouble, but I guess it can work. I don't see how you could get much more up travel and it seems like it would drop the rear of the spring quite a bit leaving it volnrable to rocks. Just my opinions
 

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Shorter spring life for the buggy also since its going to be constantly being flexed in the negative position and since its only one spring thick (compared to your actual spring pack) I'd think that it would be overworked on EVERY compression since it would max out in the negative position before your spring pack started to compress. That's if I understand what your talking about correctly.
JMHO <IMG SRC="smilies/beer.gif" border="0">
 

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Discussion Starter · #6 ·
No, use a 1/2 of a full spring pack just like a set of 1/4 eliptics. Therefore dual spring rates. What I'm building will actually have 3 leafs on each side, the rear half of a rear toy set. And then set my shackle length for the ride height I want. I think it will be a stock length straight up shackle.
 

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The "dual rate" coil over setups don't have "two" rates... the two different rate coils add up to the effect of one lesser rate coil. I think its just a way to use combine a limited number of single spring rate choices to give you more overall choices...

The effective rate of the two springs is 1/(1/rate1 + 1/rate2). It will always end up less than the smaller spring rate. Two 300lb/ft springs stacked on top of one another would be the same as one 150lb/ft spring. A 300 and a 150 stacked would be a 100, etc.

I'm not sure how it would work out for a 3/4 elip., but it would be similar...

Sure, you'll get tons of travel w/ a very low spring rate, but personally I wouldn't want a lower spring rate...

I think relieving torsional stress like Orbit-ete springs do would be more useful to me (the thick Chevy mail leaves don't like to twist much). I've got an idea to make a pivot at the hanger...

[ 10-15-2001: Message edited by: Erik Beeb ]
 

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Originally posted by Erik Beeb:
<STRONG>The "dual rate" coil over setups don't have "two" rates... the two different rate coils add up to the effect of one lesser rate coil. I think its just a way to use combine a limited number of single spring rate choices to give you more overall choices...

The effective rate of the two springs is 1/(1/rate1 + 1/rate2). It will always end up less than the smaller spring rate. Two 300lb/ft springs stacked on top of one another would be the same as one 150lb/ft spring. A 300 and a 150 stacked would be a 100, etc.

I'm not sure how it would work out for a 3/4 elip., but it would be similar...

Sure, you'll get tons of travel w/ a very low spring rate, but personally I wouldn't want a lower spring rate...

I think relieving torsional stress like Orbit-ete springs do would be more useful to me (the thick Chevy mail leaves don't like to twist much). I've got an idea to make a pivot at the hanger...

[ 10-15-2001: Message edited by: Erik Beeb ]</STRONG>
I thought about the orbit eyes when I installed my chevys. I think the eye was a bit too small. What was your idea?

bobby
 

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Originally posted by Erik Beeb:
<STRONG>The "dual rate" coil over setups don't have "two" rates... the two different rate coils add up to the effect of one lesser rate coil. I think its just a way to use combine a limited number of single spring rate choices to give you more overall choices...

The effective rate of the two springs is 1/(1/rate1 + 1/rate2). It will always end up less than the smaller spring rate. Two 300lb/ft springs stacked on top of one another would be the same as one 150lb/ft spring. A 300 and a 150 stacked would be a 100, etc.

I'm not sure how it would work out for a 3/4 elip., but it would be similar...

Sure, you'll get tons of travel w/ a very low spring rate, but personally I wouldn't want a lower spring rate...

I think relieving torsional stress like Orbit-ete springs do would be more useful to me (the thick Chevy mail leaves don't like to twist much). I've got an idea to make a pivot at the hanger...

[ 10-15-2001: Message edited by: Erik Beeb ]</STRONG>
That's all correct, but you get the "second" spring rate when the softer of the two coils bottoms out, and you're left with the stiffer one. Using your example of a 300 lb coil and a 150 lb coil stacked, you have 100 lb/in rate until the 150 lb coil is completely compressed--then the rate jumps up to 300 lbs.

I'd think it would be the same for a 3/4 elliptic setup, too--you have the squishy rate until the upper part hits the frame, then you have your "normal" rate.

I personally don't like the idea, but if someone wants to try it.....knock yourself out.
 

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Thanks, Carl. That makes sense... I didn't know if the long coils *could* bottom out... Most of what I said I just read in a thread in the General section the other day... <IMG SRC="smilies/redface.gif" border="0">


Bobby- I described my idea near the end of this thread:

http://www.pirate4x4.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=6&t=009089

Basically putting a hinge in the front spring hanger that can only turn inwards...
 

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Discussion Starter · #11 ·
I'll let you guys know how it turns out, and post some pics as soon as I get a working digital camera again. I've got the springs built out of the rear half of a set of toys(1" past the pin bolt) and just need to install them. If it works like it appears so far, I'll get more travel at the same height and better stuff.
 
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