Why and how to increase the castor angle

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luli
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Why and how to increase the castor angle

Post by luli » Tue Nov 26, 2019 12:03 pm

Is your rover P2 wanders around? Do you experience wheel wobbling? Or tramlining? The cure for all that may be increased castor angle. What is the roll of the wedge between the front axle and the spring? How to increase the castor angle, and why you better have electric assisted steering with large castor angle?
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Rover 10 1946 RHD
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Rover 12 1947 tourer LHD
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Phil - Nottingham
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Re: Why and how to increase the castor angle

Post by Phil - Nottingham » Sun Dec 29, 2019 9:21 am

Good useful experiment and write up
P2/P4/P5/P5B/LR's - EXJ 8**/2**8MY & others

HAD501
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Re: Why and how to increase the castor angle

Post by HAD501 » Sun Apr 26, 2020 3:52 pm

An interesting idea - I've checked the geometry of my car and it's all OK according to spec. But it still feels rather "insecure" on the road, although that might be due to my advancing years rather than the car's. As well as the T series cars MG also produced the VA/SA/WA saloon cars in the late 1930's. The VA is particularly relevant being a 1.5 litre car of similar dimensions to a Rover 12. The camber and king-pin inclination are the same as P2's (2 and 8 degrees) but the castor is 4.5 degrees versus 2.5-3 degrees specified by Rover. So maybe worth a bit of experimentation.

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Phil - Nottingham
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Re: Why and how to increase the castor angle

Post by Phil - Nottingham » Sun May 10, 2020 12:25 pm

Our 1938 16 P2 has never been subject to vagueness, tram-lining or wandering even when it had age-hardened tyres, worn kingpins and slack shock-absorber bushes. It still gives me full confidence driving it briskly - the worn components now having been sorted
P2/P4/P5/P5B/LR's - EXJ 8**/2**8MY & others

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