Body swap or SVA, BIVA? - Page 4
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  1. #31
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    Not an expert, but on these rear ends it's worth adding something to limit the downward movement into positive camber. Otherwise if you go into oversteer it creates a positive camber which effectively jacks up the back of the car and they can flip over, especially if you back off. Pretty much the same as when you highside a motorbike. Some GT6s had rotoflex couplings to help with this. A friend flipped his Vitesse 1600 years ago, there were four of us in it so extra weight doesn't help, still have the scars!! In this example the side of the Vitesse never touched ground as it went straight from tyres to roof so it flipped rather than rolled. Spitfires and GT6s have a lower CofG so don't suffer as badly, so if you're building something lower than a Herald it might help.

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  3. #32
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    I know nothing about Herald rear ends, so there may be a dozen reasons why this wouldn't work... But as a cheap and easy solution, is it possible to remove the rear spring, then make up a slightly V-shaped spring carrier for on top of the diff? If so then cut the rear spring in the middle (may even need to remove a small section), then clamp it to the V-section (the same way you clamp a quarter-elliptic spring to the chassis, two nice large U-bolts each side or similar). The angle of the V will make the rear end sit lower, and depending how far in or out you mount the spring halves, the eyes at the end will control the positive/negative angle of the hub carriers?

  4. #33
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    That's some good thinkin there mate i like your style!
    Quote Originally Posted by Shedster View Post
    I know nothing about Herald rear ends, so there may be a dozen reasons why this wouldn't work... But as a cheap and easy solution, is it possible to remove the rear spring, then make up a slightly V-shaped spring carrier for on top of the diff? If so then cut the rear spring in the middle (may even need to remove a small section), then clamp it to the V-section (the same way you clamp a quarter-elliptic spring to the chassis, two nice large U-bolts each side or similar). The angle of the V will make the rear end sit lower, and depending how far in or out you mount the spring halves, the eyes at the end will control the positive/negative angle of the hub carriers?

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  6. #34
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    Quote Originally Posted by Shedster View Post
    I know nothing about Herald rear ends, so there may be a dozen reasons why this wouldn't work... But as a cheap and easy solution, is it possible to remove the rear spring, then make up a slightly V-shaped spring carrier for on top of the diff? If so then cut the rear spring in the middle (may even need to remove a small section), then clamp it to the V-section (the same way you clamp a quarter-elliptic spring to the chassis, two nice large U-bolts each side or similar). The angle of the V will make the rear end sit lower, and depending how far in or out you mount the spring halves, the eyes at the end will control the positive/negative angle of the hub carriers?
    Doubt it would make any difference odgie. Only fix is to limit any droop at all in suspension. It will always pivot around that inboard knuckle.

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