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JTD108L - 1971 GTM Racer 
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Looking like a GTM

Joined: Wed Sep 30, 2015 8:25 pm
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GTM: Cox/Coupe
Post JTD108L - 1971 GTM Racer
Hello everyone
Here are some pics of the tub and bits sitting in the container until I get my house/workshop sorted, as you can see it is very rusty!
https://www.flickr.com/photos/109325599 ... 259679279/
and
https://www.flickr.com/photos/109325599 ... 259679279/


Mon Dec 07, 2015 11:45 pm
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Where is my Number Plate?
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Joined: Mon Oct 01, 2007 7:25 pm
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Location: Near Milton Keynes
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Post Re: JTD108L - 1971 GTM Racer
I can't see anything on this link :cry:

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THE WORLD'S FASTEST 'A' SERIES COX GTM Standing 1/4 Mile in....13.502 @115mph MITP 08


Mon Dec 14, 2015 3:51 pm
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Looking like a GTM

Joined: Wed Sep 30, 2015 8:25 pm
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GTM: Cox/Coupe
Post Re: JTD108L - 1971 GTM Racer
That's odd... here is a link to my GTM page on Flickr, anyone can access it.

https://www.flickr.com/photos/109325599 ... 299050670/


Tue Dec 15, 2015 11:54 am
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Joined: Fri Sep 14, 2007 10:34 pm
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Location: In the workshop
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Post Re: JTD108L - 1971 GTM Racer
Page link works ok

Neil

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IF wile e coyote had a GTM he would have one with Nitrous too! watch out road runner! The First GTM into the 11s then the 10s, PB 10.87 @ 125.5 Mph on A048 tyres, and fully road legal at Santa Pod


Tue Dec 15, 2015 10:06 pm
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Post Re: JTD108L - 1971 GTM Racer
Came up for me quicker than I could say Viagra :wink:
John


Wed Dec 16, 2015 4:12 am
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Joined: Mon Oct 01, 2007 7:25 pm
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Location: Near Milton Keynes
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Post Re: JTD108L - 1971 GTM Racer
grizzler73 wrote:
That's odd... here is a link to my GTM page on Flickr, anyone can access it.

https://www.flickr.com/photos/109325599 ... 299050670/



This one works^^^^^^^^ 8) 8) 8) 8) 8) 8) 8)

but the first one still doesn't work for me :cry: :cry: :cry:

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THE WORLD'S FASTEST 'A' SERIES COX GTM Standing 1/4 Mile in....13.502 @115mph MITP 08


Sat Dec 19, 2015 7:59 pm
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Looking like a GTM

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GTM: Cox/Coupe
Post Re: JTD108L - 1971 GTM Racer
Here is my first stab at a better rear wishbone, using Minispares compettion inner bushes and 1/2" Rod ends.
The little bosses line up with the 2 holes in the bottom of the mini hub carrier, these I will tap M8 and then drill the carrier for clearance. I was thinking I may do the steering arm locator as well just so it really is locked off!


Attachments:
wishbone.JPG
wishbone.JPG [ 45.19 KiB | Viewed 6092 times ]
Thu May 05, 2016 10:42 pm
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Location: Scotland [GTMOC 1190]
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Post Re: JTD108L - 1971 GTM Racer
You might want to weld a vertical plate across the back of the bottom mounting plate for the upright.

I did this to my standard GTM plates after they twisted.

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1967 Cox GTM; 1970 GTM Coupe, GTM Spaceframe (Two is never enough!)


Fri May 06, 2016 11:16 am
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Looking like a GTM
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Joined: Sat Jul 26, 2008 9:45 am
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Location: Scotland [GTMOC 1190]
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Post Re: JTD108L - 1971 GTM Racer
Here is the bowed bottom bracket.


Attachments:
bracket.jpg
bracket.jpg [ 19.22 KiB | Viewed 6072 times ]

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1967 Cox GTM; 1970 GTM Coupe, GTM Spaceframe (Two is never enough!)
Fri May 06, 2016 11:20 am
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Looking like a GTM

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Post Re: JTD108L - 1971 GTM Racer
good point, I will add it in.


Fri May 06, 2016 1:03 pm
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Post Re: JTD108L - 1971 GTM Racer
I felt that this was the weakest area of the Coupe suspension. Lifting off at 80 ( on private roads of course) the back end was noticeably moving around.
Scarily, my Clio V6 has the same arrangement using the steering arm for toe-in control !!

Martin


Tue May 10, 2016 10:29 pm
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Post Re: JTD108L - 1971 GTM Racer
I don't think the A frame arms are the weak point, it's the bracket onto the hub that flexes, which is why people using a steering locking arm system get a better rear end controle.
John


Wed May 11, 2016 7:15 am
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Post Re: JTD108L - 1971 GTM Racer
looking at your drawing, if you move the tie bar pick up from the underslung position, to the leading edge of the forward arm. You'll be able to loose some weight off the tie bar by shortening it :wink:

every little helps for a racecar 8)

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THE WORLD'S FASTEST 'A' SERIES COX GTM Standing 1/4 Mile in....13.502 @115mph MITP 08


Thu May 12, 2016 10:24 pm
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Looking like a GTM

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Post Re: JTD108L - 1971 GTM Racer
I take your point Stuart, but to be honest I am skating on pretty thin ice regs wise with the rod ends so I can't see myself getting away with shortened tie bars as well, I will use the Group A type tie bars so I can adjust the toe in easily with that. I intend to build the rear end to be as easy to adjust as possible without it looking like a full on race car!


Sat May 14, 2016 11:05 pm
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