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  #1191  
Old 25-11-17, 08:41
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Rear springs are fitted. These are 750lb with the motion ratio of 1.87:1

Next the ones I took off the rear, 650lb, are swapping to the front to replace the 550lb.

So I'll have 650 and 750 on the car, replacing the 550 and 650 springs.

Something has changed on the forum and I can't upload pictures at the moment. It used to resize them automatically, but no longer does that and says the picture file size is too large .
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  #1192  
Old 27-11-17, 12:34
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Just fitted the rear springs, and now I'm looking to attach the linear pots to the dampers so I can measure spring displacement.

First challenge is to find the matching ITT loom connector for the splendid 3 way connectors that are attached to the sensors. If I cant find anything that doesn't cost the earth, I'll change the plugs for some Binder 712's and crack on with the wiring.



I've also noticed that the rear dampers didn't come with bumpstop rubbers, so this is something I'm going to look at to limit suspension movement and provide additional damping.
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  #1193  
Old 04-12-17, 10:18
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Damper pots are now attached to the rear dampers. As the pots are only 750mm long, and don't extend the full length of the dampers, I've had to be a little creative with the brackets to make them extend the right amount.

On to the front next.





The rears now have 10mm preload, and I'll set the fronts to 5mm
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  #1194  
Old 04-12-17, 11:14
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Might be an optical illusion Graham but is there occasions when the top of the springs touch each other when the car sits down leaving the line? Or is there a thou clearance.
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  #1195  
Old 04-12-17, 12:57
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Yep, the new springs are the same ID as the originals, but slightly fatter, so there may be a bit of interference between the two. Will need to rotate both springs to give a bit more clearance.
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  #1196  
Old 04-12-17, 13:00
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Quote:
Originally Posted by grahamb View Post
Yep, the new springs are the same ID as the originals, but slightly fatter, so there may be a bit of interference between the two. Will need to rotate both springs to give a bit more clearance.
Could you eek the mountings on the gearbox a little further apart?
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  #1197  
Old 04-12-17, 14:09
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They're already at a bit of a jaunty angle aren't they. Another way would be to extend the length of the threaded rod ends on the rocker arm ends of the dampers. Or just grind a flat on the side of the springs where they're most likely to bind. I guess Intrax wasn't perhaps the best choice, with the 51mm spring ID's.
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  #1198  
Old 04-12-17, 15:09
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There looks to be plenty of platform thread so you could make a spacer for the top spring seat to move the springs lower down the damper length
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  #1199  
Old 04-12-17, 18:43
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Quote:
Originally Posted by PumaWestie View Post
There looks to be plenty of platform thread so you could make a spacer for the top spring seat to move the springs lower down the damper length
Good idea, I'll have a look tonight and come up with a cunning plan. I suppose I could reverse one of the dampers so its lying head to toe against the other, but theres probably a really good reason they're this way round to start with.
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  #1200  
Old 04-12-17, 19:08
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Very well observed & very nicely put.

Quote:
Originally Posted by sr3rad View Post
Might be an optical illusion Graham but is there occasions when the top of the springs touch each other when the car sits down leaving the line? Or is there a thou clearance.
I hadn't spotted that the springs interfered with each other, but it rather sounds like they could. I think it's an excellent example of why it's a really good idea to post pics, of the actual setup.

I've no idea what suspension coil springs get up to in service but looking at youtube videos of what valve coil springs do get up to (bending sideways, rotation, wobbling about etc.) I?d want more than a few thou of clearance.

PumaWestie's suggestion (post 1198) of moving the springs down the shocker bodies sounds like the simplest way of sorting it out.
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Last edited by dennis.doyle; 04-12-17 at 19:11. Reason: finding the apostrophe on the keyboard
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