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Old 1 Feb 2011, 20:37 (Ref:2824155)   #16
Mike Bell
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I fail to see why the rule writers at the time allowed another spring to be used thats all I am saying.

The fact is they did Al, and it was FIA, and 30 years ago now. Nothing we need to get into a lather about in 2011.

But this is all OT, the question was 'What set up did Zakspeed actually use in 1974?'
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Old 2 Feb 2011, 19:13 (Ref:2824715)   #17
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Front suspension:

What kind of top mounts were used in 1974? These should be the factory/Boreham top mounts..








Boreham Uprights? Racing or original??:



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Old 2 Feb 2011, 19:24 (Ref:2824722)   #18
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I have a pair of TCAs very similar to these in my shed. Are they worth anything?
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Old 2 Feb 2011, 20:28 (Ref:2824754)   #19
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Those stub axle carriers are special and look cast rather than machined? The top mounts are also different to any I have seen before. Moving the top of strut in that far would require different upright as well to correct geometry, so obviously designed together.

I have re-read 1971 Appendix J and it looks possible to fit different uprights and hubs- either under 'Optional equipment which may be recognised with a minimum production of 100 units per year- Reinforced suspension elements' or otherwise under 'Brakes of different type and/or dimensions, which may include larger hubs and spindles.'

The (not very good) picture I have of an upright shows a unit similar to yours, but maybe machined rather than cast. There is no clue as to when picture was taken, however.


MG- There seem to be lots of different types of track control arm- maybe worth something if could be proved they came off a famous car!
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Old 2 Feb 2011, 22:49 (Ref:2824816)   #20
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Mike, my post was a bit tongue in cheek. The TCAs came from an Escort Mk1 I ran from 1975 to 1977 before it was stored then sold in the early 1980s. It had a Broadspeed shell with Broadspeed and Ford works suspension. The TCAs are alloy and virtually the same as those shown except for the hole for the ARB droplink. I must have had two sets and these didn't go with the car when I sold it.
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Old 2 Feb 2011, 23:22 (Ref:2824824)   #21
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leaf springs are heavy and don't allow simple rate changes.
I beg to differ as far as rate changes. I have a very simple method that I have used for years allowing me to change to a wet setting in a few minutes ! but I'll never tell how
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Old 3 Feb 2011, 05:46 (Ref:2824888)   #22
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Mike, my post was a bit tongue in cheek. The TCAs came from an Escort Mk1 I ran from 1975 to 1977 before it was stored then sold in the early 1980s. It had a Broadspeed shell with Broadspeed and Ford works suspension. The TCAs are alloy and virtually the same as those shown except for the hole for the ARB droplink. I must have had two sets and these didn't go with the car when I sold it.
So the tcas did come off a famous car then! Do they have a rose joint for locating to bottom of upright and can you recollect if the top mounts and uprights were also similar?

Zakspeed started out as a Broadspeed customer so it is quite possible that the arms are same, which could be of interest to Johan as it would suggest that the setup in his pictures is correct / original.

Gordon! I amend my earlier statement to: 'leaf springs are heavy and don't allow simple rate changes- unless your name is Gordon Streeter'.
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Old 3 Feb 2011, 07:42 (Ref:2824904)   #23
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I beg to differ as far as rate changes. I have a very simple method that I have used for years allowing me to change to a wet setting in a few minutes ! but I'll never tell how


Anglegrinder?????????
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Old 3 Feb 2011, 08:11 (Ref:2824913)   #24
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Anglegrinder?????????

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Old 3 Feb 2011, 12:52 (Ref:2825052)   #25
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A bit of soft rubber twixt spring and axle?
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Old 3 Feb 2011, 12:56 (Ref:2825055)   #26
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So the tcas did come off a famous car then! Do they have a rose joint for locating to bottom of upright and can you recollect if the top mounts and uprights were also similar?

I'll get a photo and post it here. Can't recall top mounts but will ask my brother who was the mechanical genius. I think the uprights were similar.
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Old 3 Feb 2011, 16:57 (Ref:2825223)   #27
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If I can remember how to do it there should be some photos attached to this post.
There are numbers on the TCAs - inside one chanel of each TCA is 'LM10W' and on the opposite chanel is '13.113'. Any ideas what these are. I think the LM10W may be the aluminium specification and the 13.113 could be a part number - but whose? I have a friend who used to work at Broadspeed and I'll ask him.
I have also had the top mounts shown for a number of years but can't remember if they came at the same time as the TCAs. The top mounts have no marking other than a marker pen 'R' and 'L'.
Attached Thumbnails
Escort bits 004.jpg   Escort bits 001.jpg   Escort bits 002.jpg  

Escort bits 003.jpg   Escort bits 005.jpg   Escort bits 006.jpg  

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Old 4 Feb 2011, 06:06 (Ref:2825485)   #28
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Those tcas look the same as ones Johan has pic of on car, so maybe that is one part can be confirmed as Broadpeed? We need for Gungebucket to confirm what Wooding used on front........ The pic I posted possibly shows a steel tubular arm rather than aluminium cast / machined one- maybe safer as would bend rather that fracture? I imagine specification changed regularly as it always has done in motorsport!

Johan, I am a little confused as to reason you need the information. Do you have a car and need to prove that parts are correct, or are you building a car and want to use same parts? I am interested as when I built my Gp2 Escort (to 1974 spec) I was never able to get full information about Zakspeed suspension. It would be good if finally some or all parts could be confirmed as correct!
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Old 4 Feb 2011, 09:30 (Ref:2825544)   #29
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Thank you "morninggents" for your pictures!!

The TCA on the finnish car is from solid (Billet) aluminium as they have been since it came to Finland from Boreham (??).
When reading the classification document there is a picture of a TCA in aluminium dated 1/4/71 with part nr. CD 26872 and looks like "morninggents" -> machined aluminium.

We are 2 buddies starting to build 2 RS1600 Group 2 (H1) here in Finland and would like to build them as they were built back in the days Maybe it is too easy to buy "rally" parts And it can be good to have proof of what kind of parts were used because there are lot of new stuff on the market, especially GR4 rally parts. We dont want to build a rallycar

There is not enough "building" pictures of the cars on the web so this is probably the best way to get some and information how they where built. We have just the Boreham Racing car there in Finland but plenty of Rally cars.
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Old 4 Feb 2011, 11:14 (Ref:2825592)   #30
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There was a thread not so long ago about Zakspeed Escorts. Perhaps some of the contributors to that thread may have information or pictures of Zakspeed suspension set-up.

Also, there are Alan Mann and Broadspeed Escorts still around and the owners may be prepared to describe or photo their car's set-up.
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