Another post about uprights / trunnions

[JonB]

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...

[MarkDa]

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

[Chancer]

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.

[Chancer]

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.

[Mrozik]

Hi
I have just reassembled the LHS suspension and noticed that the trunion joint was very stiff - I hadn't noticed when I originally dismantled the unit. No corrosion was obbvious on the threads so my best guess is that the either the thread on the trunnion is damaged or the upright bolt is very slightly bent. Appreciate thoughts and suggestions on the matter
Many thanks

[Donels]

Have you tightened it too far? Back off one turn and then see if it’s ok.

[Mrozik]

No, it stiffens up on every turn as I screw it in which makes me suspect its either a bent bolt of damaged thread in the trunnion.