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Interesting Chassis

 
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bcal
700RPM



Joined: 04 Feb 2021
Posts: 722
Location: The Shire, Sydney

Posted: Thu Jun 17, 2021 7:30 pm    Post subject: Interesting Chassis

Iím ready a book on the history of sports cars which was written back in the fifties and came across this pic of a chassis from Frazer Nash Continental.

What struck me was how similar it looks to a T bucket chassis.
But there are some interesting differences.
Look closely at the transverse leaf front end. The spring forms the upper control arms of an independent FE with R&P; steering. Similar to early Pugs but they used the spring as the lower arms.
The rear end is also very novel. It featured a de dion axle with torsion bar suspension. I also like the idea of the A arm for lateral control rather than a watts link or panhard rod but I think the roll center may be a bit high.
The donk is a BMW 2.6 litre V8 and looks to have twin carbs. Didnít even know BMW made a V8 back then, and why with such a small capacity.
The chassis first appeared in 1948 and to me appears to be similar to the Jowett Jupiter of the same era. The Jupiterís chassis was designed by the same engineer that designed the prewar AutoUnion racecars and he may well have had something to do with the Continental.


Now I wonder how you'd go convincing the NSW RTA that your T bucket was in fact a rebodied Frazer-Nash.
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spark
Cruisin



Joined: 13 Jun 2021
Posts: 313
Location: Lakes Entrance Victoria, Australia

Posted: Thu Jun 17, 2021 8:27 pm    Post subject:

Are those chassis rails tubular?
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bcal
700RPM



Joined: 04 Feb 2021
Posts: 722
Location: The Shire, Sydney

Posted: Thu Jun 17, 2021 9:36 pm    Post subject:

Quote:
Are those chassis rails tubular?

Yeh looks like 3" waterpipe to me.
Book reckons the chassis was renoun for it's lightness and rigidity.
But this was the 50s don't forget
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bcal
700RPM



Joined: 04 Feb 2021
Posts: 722
Location: The Shire, Sydney

Posted: Thu Jun 17, 2021 9:47 pm    Post subject:

Just had another bopeep at the book and I reckon it's oval section.
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Mr34
Rookie


Joined: 11 Jun 2021
Posts: 95
Location: QLD

Posted: Fri Jun 18, 2021 9:59 am    Post subject:

The cobras have a tube section chassis also. The cobra Daytona coupe had the same type of rear suspension as the front of that chassis, the spring was across the top, but it was hard to adjust camber and stuff, so most of the cars replaced it with upper A arms.

there is a pic of it at this site:

http://members.aol.com/COUPECHUCK/index.htm

It is an unbelievable site, this guy builds the body out of aluminium by hand, maybe you have seen it.

I like the torsion bar rear, i think that is highly underrated, its pretty easy to package under a car, and does the same job.

ps: the best site i have found for suspension information is www.corner-carvers.com. Man there are some Brainiacs there.... good search function too.
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