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

My dummies are currently 15" total length and 14" between hole centres. Made from 25mm box section

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

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

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 !

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 :)

Do they need to be 2 1/4 or is the 1.9 shocks adequate

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.