10-09-2019, 02:33 PM | #1 |
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Join Date: May 2016
Location: Gilroy California
Posts: 42
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Castor angle
Does anyone have a formula for castor measurements . Les Andrews book says at 11in difference of 1in is . 09 or 5.1deg.
Mine is at 12in and a difference if 1.5 in or 0.125 I'm thinking around 7degrees?? |
10-09-2019, 02:55 PM | #2 |
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Join Date: Apr 2016
Posts: 36
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Re: Castor angle
Yes, the arc tangent of 1.5/12 is 7.13 degrees.
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10-09-2019, 04:55 PM | #3 |
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Join Date: May 2016
Location: Gilroy California
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Re: Castor angle
Great, Thanks. Should be good.
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10-09-2019, 05:48 PM | #4 |
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Location: Between Seattle & Tacoma
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Re: Castor angle
Just by a angled scaled magnetic protractor from your local lumberyard and stick it to the axle and read the °’s
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10-10-2019, 03:25 PM | #5 |
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Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Re: Castor angle
7º of caster is quite a bit. They are originally set for 5º which is still quite a bit.
The car will still probably track well at speed, but, the steering wheel probably will not want to return very well on its own during a slow turn. |
10-10-2019, 10:13 PM | #6 |
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Re: Castor angle
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10-10-2019, 10:33 PM | #7 |
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Re: Castor angle
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10-11-2019, 12:41 AM | #8 |
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Join Date: Jul 2010
Location: Auckland, New Zealand
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Re: Castor angle
Hmm. The action of caster lifts the sprung weight up as the wheels turn if I am not mistaken. I often am!!
This should give heavier steering and more self-centreing action, SAJ in NZ |
10-11-2019, 01:15 AM | #9 |
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Location: Australia
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Re: Castor angle
It's like a shopping trolley ...
https://www.youtube.com/watch?v=Gh7gWJAvOvs |
10-12-2019, 04:10 PM | #10 |
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Join Date: Jun 2015
Posts: 1,414
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Re: Castor angle
5 deg.measured per post 4 at the axle ends next to the king pins. The axle in the middle may be different due to age, etc.
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