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Old 12-24-2003, 07:19 AM   #61
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Your schooling worries me a bit.

Have a butchers at THIS

. . . and THIS

. . . and one to download and play with.
N.B. Change the suffix to .xls and it should work.
Thanks for the site, will go through it!!!
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Old 12-24-2003, 07:24 AM   #62
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. . . . in any other thread, I'd be collecting a bottle of Smirnof, about now.
friggin' hustler ... do they allow vodka by PAYPAL? Hahahaaaa ... Absolut is better!!!
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Old 12-24-2003, 07:38 AM   #63
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Originally posted by tIANcI
friggin' hustler ... do they allow vodka by PAYPAL? Hahahaaaa ... Absolut is better!!!
Oh, are you saying you'd "spring" for a bottle of Absolut?
. . . "spring", get it.
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Old 12-24-2003, 07:39 AM   #64
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Quote:
Originally posted by Taylor-Racing
Your schooling worries me a bit.

Have a butchers at THIS

. . . and THIS

. . . and one to download and play with.
N.B. Change the suffix to .xls and it should work.
I think I may have got it. If you cut the spring in half the ratio is the same but with what I read they are cutting ONE or two coils and not in terms of lenght with coils as a factor in determining how much to cut. Am I right? I hope my school was good enough ... well I did get bullocks for maths.
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Old 12-24-2003, 07:40 AM   #65
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Originally posted by Taylor-Racing
Oh, are you saying you'd "spring" for a bottle of Absolut?
. . . "spring", get it.
Farnee ... farnee har har ...
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Old 12-24-2003, 07:48 AM   #66
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I went to a couple drag racing schools, and a couple of dirt track schools on chassis setups. When you cut a spring you change the spring rate. I think it makes the spring rate higher the shorter the spring. So I disagree tiaNci.
If you are right why do Nascar crews add and remove spring rubbers?
Your schooling worries me too!
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Old 12-24-2003, 08:02 AM   #67
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Quote:
Originally posted by tIANcI
I think I may have got it. If you cut the spring in half the ratio is the same but with what I read they are cutting ONE or two coils and not in terms of lenght with coils as a factor in determining how much to cut. Am I right? I hope my school was good enough ... well I did get bullocks for maths.
Not completely sure what your getting at here, with the "ratio" thing.
But if you cut a spring in half, you will double the rate.
. . . . depending on which axis you cut it, of course.

With the bike spring, they are calculating the rate of the existing spring and then calculating how much needs to be cut off in order to increase the rate by 10%. . . . I think it was 10%.

The purpose of giving you that link was to establish that less coils = higher rate, all other things being equal - and they don't alter the coil spacing. The other link/spreadsheet was to illustrate that nowhere does anyone talk about coil spacing as a factor.

. . . just a some ice in mine, please.
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Old 12-24-2003, 08:07 AM   #68
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This might help.

Think of the spring as a torsion bar that is formed into a coil. The longer the torsion bar is the easier it will twist, the smaller the dia the easier it will twist.

Ted (not Bobby)
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Old 12-24-2003, 08:35 AM   #69
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Quote:
Originally posted by Bobby Flack
This might help.

Think of the spring as a torsion bar that is formed into a coil. The longer the torsion bar is the easier it will twist, the smaller the dia the easier it will twist.

Ted (not Bobby)
The torsion bar works on a leverage basis ... springs are taking the load vertically if it were upright ... have to see if one cuts the spring in half the rating doubles. Hmmmmm ...
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Old 12-24-2003, 08:59 AM   #70
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Quote:
Originally posted by tIANcI
The torsion bar works on a leverage basis ... springs are taking the load vertically if it were upright ... have to see if one cuts the spring in half the rating doubles. Hmmmmm ...
No, Ted's correct. . . . and he explained it more clearly than me, too.

When your rear sway bar comes into play, the loads are torsional - a twisting motion. It's the same thing with a coil spring.

It's Google time for you.

. . . . and where the hell is that vodka and ice?
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Old 12-24-2003, 10:04 AM   #71
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im not even about to ask about progressive rate springs
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Old 12-24-2003, 10:20 AM   #72
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Quote:
Originally posted by Taylor-Racing
No, Ted's correct. . . . and he explained it more clearly than me, too.

When your rear sway bar comes into play, the loads are torsional - a twisting motion. It's the same thing with a coil spring.

It's Google time for you.

. . . . and where the hell is that vodka and ice?
Vodka Cranberry
Vodka Redbull
Vodka Ribena (Vibena, sparkling)
Vodka Jelly
Vodka Melons
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Old 12-24-2003, 10:21 AM   #73
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Quote:
Originally posted by sbmon
im not even about to ask about progressive rate springs
Don't you start!!!
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Old 12-24-2003, 11:30 AM   #74
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Quote:
Originally posted by sbmon
im not even about to ask about progressive rate springs
Actually,,, progressive springs are a very good way to see what the difference is between coil spacing.

If you look at a progressive spring, the coil spacing is much smaller on one end than the other. Now take that spring and squeeze it with your fingers. You will find that the coils with the least amount of space will collapse first. That's because it's easier to compress a spring that has its' coils closer to 90 degrees of the load (if that makes any sense).
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Old 12-24-2003, 11:49 AM   #75
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Quote:
Originally posted by Taylor-Racing
So, you would ignore the difference in the wire diameter?
This one refers back to the silver springs HPI sells for the R40. The front springs are 1.7mm thick and the rears are 1.6mm. Both springs have 6.5 coils but the spacing is greater on the rear spring because it is 3mm longer.

So the answer to this question is no, you do not ignore the wire diameter.

Yes the front spring has a thicker wire but since it is in a more "laid-downed" position of the load, it isn't harder to compress than the thinner rear spring which is "standing up" more against the load.

I think
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