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ozaristov300 Occasional Poster Location: Melbourne Registered: January 2005	Re: Chopped springs Tue, 25 January 2005 01:25 Hey, can I have a go at this? 1. You can "chop" a spring if: a) You understand the existing and new specifications of the spring after the cut as outlined by Norbie and others above, not just the fooly sic factor (emphasis on the fooly). b) You perform the cut while controlling the temperature (typically done while immersed in an oil bath), else you will alter the metallurgy and risk snapping the spring during operation, most likely at an inconvenient time (see wrecked BMW above and add death & injury to you, your occupants and others) c) You increase the bump and rebound damping rates in the corresponding shock absorbers, else your car will "pitch" (increased spring rate with no corresponding rebound shock rate will cause the car to over-correct the wheel movement causing the car to "bounce". If you watch your headlight line (assuming halogens or better) at night you will see it bouncing up and down even on a relatively smooth road - often called a "jiggly" ride. d) While modifying the shocks, you will need to change the shaft length to adjust for the new operating lengths, else at a minimum you will need to wire in the springs to the top hat and base mount plate to ensure the spring does not demount itself on full extension. Most cut springs will be shorter than the full extension of the shock. e) You modify the bump stop in the shock absorber to ensure you have sufficient travel for the new spring to operate. Hitting the bumpstop regularly will typically break the foot valve in the shock with a similar outcome to b). Also makes a good lap time impossible. Man, you should try driving around the Calder Thunderdome at 230kmh in a standard Group A GT4 Celica. Turn into the banked corner, the suspension compresses onto the bump stops, yours eyes jiggle so bad you can't see and the ripple across the road surface near the exit point throws the car 5 metres to the left - into the wall if you're not careful. OR 2. Take your car to someone who knows what they're doing... Nuff said. [Report message to a moderator]

	Subject	Poster	Date
	Chopped springs	Intensevil	Tue, 18 January 2005 14:01
	Re: Chopped springs	Norbie	Tue, 18 January 2005 14:40
	Re: Chopped springs	dizzy	Wed, 19 January 2005 14:45
	Re: Chopped springs	styler	Thu, 20 January 2005 10:04
	Re: Chopped springs	bbaacchhyy	Thu, 20 January 2005 10:14
	Re: Chopped springs	vsvsicks	Fri, 21 January 2005 12:15
	Re: Chopped springs	hokey	Fri, 21 January 2005 10:28
	Re: Chopped springs	gr8r-x	Fri, 21 January 2005 23:41
	Re: Chopped springs	Intensevil	Fri, 21 January 2005 10:46
	Re: Chopped springs	Norbie	Sat, 22 January 2005 08:39
	Re: Chopped springs	BillusMcFlunday	Sun, 23 January 2005 05:57
	Re: Chopped springs	hokey	Sun, 23 January 2005 11:19
	Re: Chopped springs	styler	Sun, 23 January 2005 14:02
	Re: Chopped springs	gold28	Mon, 24 January 2005 23:30
	Re: Chopped springs	gr8r-x	Tue, 25 January 2005 06:44
	Re: Chopped springs	TurboRA28	Mon, 24 January 2005 23:43
	Re: Chopped springs	oldcorollas	Tue, 25 January 2005 00:00
	Re: Chopped springs	hokey	Mon, 24 January 2005 23:54
	Re: Chopped springs	oldcorollas	Tue, 25 January 2005 00:04
	Re: Chopped springs	ozaristov300	Tue, 25 January 2005 01:25
	Re: Chopped springs	TurboRA28	Tue, 25 January 2005 01:34

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