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  #1  
Old 4th August 2015, 06:36 PM
SteveH SteveH is offline
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Default dummy shocks

i will soon have my chassis rolling but first i need to knock up some dummy shocks
what size should i cut some tubing at and what hole centres roughly

steve
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  #2  
Old 4th August 2015, 07:44 PM
NeilW NeilW is offline
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My dummies are currently 15" total length and 14" between hole centres. Made from 25mm box section
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Old 5th August 2015, 10:05 AM
SteveH SteveH is offline
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I'll get some cut later
I'm looking in the rally designs catalogue at coiloivers what size is needed
For a book spec Sierra chassis with TMXR wishbones as supplied by talon

Steve
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Old 5th August 2015, 10:19 AM
NeilW NeilW is offline
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To be honest I am also not 100% sure what lengths are needed. I age read so many different approaches (length, spring rate etc). The original book was amended and there is some details in stickies.
I believe 14" open 9.5" closed all around are required. Shocks around 350lbs and 250lbs
Protech have a good reputation and they do a kit for Haynes builds for £452 - quite expensive but with a roadster where handling is all important I will be going that route over something a little cheaper at the compromise of handling.

Link to sticky https://haynes.co.uk/forums/showthread.php?t=5820
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Last edited by NeilW : 5th August 2015 at 10:22 AM. Reason: Link added
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  #5  
Old 5th August 2015, 11:25 AM
flyerncle flyerncle is offline
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Cut some blocks of wood to 4 1/2 and 5 1/2 ins long,put 4 1/2 under front of chassis and 5 1/2 at rear and this will give you a decent final ride height.

Make four rods to fit shocker bracket centers and you have the correct height to work from.

And Neil is dead right about the handling,makes a difference !
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  #6  
Old 5th August 2015, 12:53 PM
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voucht voucht is offline
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Quote:
Originally Posted by SteveH View Post
I'll get some cut later
I'm looking in the rally designs catalogue at coiloivers what size is needed
For a book spec Sierra chassis with TMXR wishbones as supplied by talon

Steve
Hi,

Part numbers for Gaz Shocks on my invoice from Rally Design are:

G140/095B12-2
G = Gaz
140= 14'' open
095 = 9.5'' closed
B12 = bush mounted (12mm rod)
2 = 2'' body

Springs:
2.25'' x 8'' x 350 lbs springs : part number = RD1193/8
2.25'' x 8'' x 250 lbs springs : part number = RD1189/9

You can also see this thread:
https://haynes.co.uk/forums/showthread.php?t=7246

Hope this will help
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  #7  
Old 6th August 2015, 10:58 AM
SteveH SteveH is offline
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Do they need to be 2 1/4 or is the 1.9 shocks adequate
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  #8  
Old 6th August 2015, 02:28 PM
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voucht voucht is offline
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2'' 1/4 is the diameter of the spring. The shocks are 2''. I don't know if 1.9'' shocks are suitable. Personally, I would not take the risk to downsize this crucial element of the suspension. But it is just me

Good luck.
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