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JTD108L - 1971 GTM Racer
http://www.gtmdrivers.com/forum/jtd108l-1971-gtm-racer-t3325.html
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Author:  grizzler73 [ Mon Dec 07, 2015 11:45 pm ]
Post subject:  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/

Author:  turbocox [ Mon Dec 14, 2015 3:51 pm ]
Post subject:  Re: JTD108L - 1971 GTM Racer

I can't see anything on this link :cry:

Author:  grizzler73 [ Tue Dec 15, 2015 11:54 am ]
Post subject:  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/

Author:  West [ Tue Dec 15, 2015 10:06 pm ]
Post subject:  Re: JTD108L - 1971 GTM Racer

Page link works ok

Neil

Author:  kano nordie [ Wed Dec 16, 2015 4:12 am ]
Post subject:  Re: JTD108L - 1971 GTM Racer

Came up for me quicker than I could say Viagra :wink:
John

Author:  turbocox [ Sat Dec 19, 2015 7:59 pm ]
Post subject:  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:

Author:  grizzler73 [ Thu May 05, 2016 10:42 pm ]
Post subject:  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 13302 times ]

Author:  minitici [ Fri May 06, 2016 11:16 am ]
Post subject:  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.

Author:  minitici [ Fri May 06, 2016 11:20 am ]
Post subject:  Re: JTD108L - 1971 GTM Racer

Here is the bowed bottom bracket.

Attachments:
bracket.jpg
bracket.jpg [ 19.22 KiB | Viewed 13282 times ]

Author:  grizzler73 [ Fri May 06, 2016 1:03 pm ]
Post subject:  Re: JTD108L - 1971 GTM Racer

good point, I will add it in.

Author:  martin hassett [ Tue May 10, 2016 10:29 pm ]
Post subject:  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

Author:  kano nordie [ Wed May 11, 2016 7:15 am ]
Post subject:  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

Author:  turbocox [ Thu May 12, 2016 10:24 pm ]
Post subject:  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)

Author:  grizzler73 [ Sat May 14, 2016 11:05 pm ]
Post subject:  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!

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