Lotus Elan

Another post about uprights / trunnions

PostPost by: JonB » Sat Dec 09, 2017 9:25 pm

Chancer wrote:You hit the upright not the stub axle, think of it like breaking the taper on a ball joint.


How to hit it square on with the axle in the way?

Reluctant to cut the upright off as might damage the stub.

Are you in Sussex these days? You're welcome to show me. :)

Eh up, I've just had an idea...
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PostPost by: MarkDa » Sun Dec 10, 2017 12:31 am

Earlier we talked about why these uprights were used, I've had an internet rummage and found an interesting article in 1999 Motorsport that explains their history and points out that several F1 cars used it!

http://redirect.viglink.com/?format=go& ... er-upright
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PostPost by: Chancer » Sun Dec 10, 2017 12:43 am

JonB wrote:
Chancer wrote:You hit the upright not the stub axle, think of it like breaking the taper on a ball joint.


How to hit it square on with the axle in the way?

Reluctant to cut the upright off as might damage the stub.

Are you in Sussex these days? You're welcome to show me. :)

Eh up, I've just had an idea...


Back there tomorrow afternoon till the end of the week.

I could press them out for you if you want.
Last edited by Chancer on Sun Dec 10, 2017 12:52 am, edited 1 time in total.
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PostPost by: Chancer » Sun Dec 10, 2017 12:51 am

MarkDA.

What a great article, I was pretty sure that it started on the Standard 8 and yes I have seen it on lots of small volume vehicles and single seaters.

Being able to change the steering arms is very important for the old school designers who understood the importance ot Ackermann geometry, I dont think the Caterham set up is correct, it for sure isn't on the wide track cars but have a feeling the the Elan will be very close to if not spot on correct.
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