8 replies to this topic

[Zami]

Which after market rear sway bar is recommended for hydrolastic suspension ‘65 cooper S?

thanks

[nicklouse]

None. One of the last things you should fit to a hydro car.

[whistler]

Try just fitting the competition bump stop kit to the rear.

[nicklouse]

Nothing has changed https://www.theminif...read-wet-v-dry/

[imack]

I've got no personal experience of fitting a rear Anti-roll bar to a hydro car, but Cooper Car Co amongst others fitted them to their race cars back in the day.

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Edited by imack, 27 May 2024 - 02:54 PM.

[Shooter63]

A believe there is a guy who races a hydro car in one of the historic series, from memory he has front and rear ARB, dampers on the front,the big bump stops, neg camber all round, and restrictors in the hydro lines, if you can find somebody with the original ST paperwork ( Spider? ) it tells you all you need to know.

Shooter

[Cooperman]

You do not want a rear anti-roll bar on a road car. It promotes oversteer and could be dangerous on public roads.

For a race car, the idea is that you can brake late into a corner and the anti-roll bar promotes oversteer which is balanced by application of power, with the result that the car will have power-on earlier in the corner and thus have a higher exit speed. The problem comes if you have to lift off mid-way through the corner at which point it becomes 'interesting' and 'rotational'.

[Zami]

Thanks for all the input.  I would agree that oversteer can be “interesting” having owned a 930 and learning a quick lesson on not lifting off in a corner.

[Cooperman]

Yes, I had a 1973 911 Carrera 2.7 RS and the handling characteristics were determined by the diameter of the rear anti-roll bar.
A larger dia anti-roll bar on the rear increases over-steer and this applies to any car.
By the same token, increasing roll-stiffness at the front promotes under-steer.
This is the basis of handling, but spring rates and suspension settings are also of importance.