Body swap or SVA, BIVA? - Reply to Topic
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Topic Review (Newest First)

  • 04-01-2011, 23:48
    german8rcoupe
    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.
  • 04-01-2011, 22:26
    Survivor mike
    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?
  • 04-01-2011, 22:21
    Shedster
    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?
  • 04-01-2011, 21:56
    Stang
    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.
  • 04-01-2011, 16:51
    german8rcoupe
    It's got nothing to do with the springing medium used, it is a simple geometric function of the inboard pivots being so close together.
  • 04-01-2011, 14:23
    vince-305
    Not really looked at one of these rear ends so bare with me

    Im guessing the fact of the camber is due to the spring bending at its mounting point therefore having a different arch .Why not get a coil over kit for the shocks

    And then make a pair of upper arms to replace the spring but have them pivot in the same plain as the drive shafts ???
  • 04-01-2011, 13:53
    issigone
  • 04-01-2011, 12:39
    goodoldluke
    how about if you load up the rear axle with how much weight it will be carrying, then measure how much lower the car has to sit to get neutral camber,
    then just make a metal block this height and both between the diff and the leaf spring, this will bring the top mounts higher giving you the desired camber,
    what iv done to my herald
  • 11-10-2010, 08:34
    Taff
    cheers for that German. Gary has hit the nail on the head, i am weird. (i'm also leaving evrything as triumph built it to avoid any unecessary hassle when it comes to re-registering the car. Hence the decision to stick with all herald running gear and not cutting the chassis about in any way. An axle swap is possible but would be very tricky, as I can't alter the chassis and any new axle mounts would need to pick up on existing chassis mounts. do-able but awkward)

    Kev, I'll dig our the necessary details this week
  • 08-10-2010, 17:57
    English Impala
    Taff's trying to keep it all as Triumph-intended to keep enough points to do a legitimate body swap. And he's a bit wierd.

    Join the Triumph Sports Six Club forum (we won't tell anyone) as they've got a technical directory on it that lists a whole load of suspension upgrades & improvements. tssc - Welcome to the Triumph Sports Six Club. also, check this: http://club.triumph.org.uk/uploads/titeaturn1_6976.jpg
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