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Location:
Terrigal
Registered:
May 2002
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RA28 Caster
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Wed, 06 August 2003 12:02
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Hi all.. Just put some new tie rods on the Celica and decided while it was getting the wheel alignment to get them to add a bit of caster too it as i've been hearing its a good thing for handling.
They put 2.5 degree on one side and 2 on the other.. Due to the roads or something for it to go straight needed less in one side.
Anyhows.. Not sure, maybe just imagining it but it feels like it corners worse.
What kind of effect does the caster have on the feel of the car? I probably should have learnt more about it first, but heard from a few people that its all good.
Any ideas and all would be good!
Many thanks
Joel
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Location:
Madrid - Spain
Registered:
August 2002
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Re: RA28 Caster
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Thu, 07 August 2003 00:28
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more caster will give you a heavier steering and a stronger centering force on the wheel.
The reason why people put more caster on is because you get a slight change in chamber when you turn the wheel. (Have a look at the wheels on full lock.)The outside wheel should get more negative chamber which is good when your chamber goes positive due to roll.
The down side of this is it makes it a bit of a dog to drive.
As a side note, if you put larger diameter wheels on your car it will give you the same heavy steering that you get from the increased caster but without any of it's benefits.
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Location:
Terrigal
Registered:
May 2002
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Re: RA28 Caster
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Thu, 07 August 2003 22:22
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Thanks for the reply mate. Would it make any sense that now with the extra caster you seem to have to turn the wheel more to get around a corner? Seems i'm 1/4 - 1/2 a turn more of the steering wheel through some corners than what I normally would have... Maybe its my overactive imagination 
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Location:
Montrose, VIC
Registered:
May 2002
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Re: RA28 Caster
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Thu, 07 August 2003 23:19
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Also depends on the offset of your wheels, as to whether you upset the scrub radius from stock. If you want more castor, thread the rods down a bit (!), just make sure the tyres don't hit anything. 
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Location:
Madrid - Spain
Registered:
August 2002
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Re: RA28 Caster
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Fri, 08 August 2003 03:15
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Pardon my ignorance, but how exactly did they adjust the caster on your car. I was under the impression that it was pretty much built in. Do you have adjustable strut tops???
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Location:
Terrigal
Registered:
May 2002
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Re: RA28 Caster
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Fri, 08 August 2003 04:30
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No, it was done with those rods from the control arms that run to the front of the car. They are threaded at one end so they can be adjusted. I thought all early Celica's had these?
No adjustable strut tops!
Cheers
Joel
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Location:
Canberra
Registered:
December 2002
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Re: RA28 Caster
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Fri, 08 August 2003 04:49
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I think they are called radius arms
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Location:
Madrid - Spain
Registered:
August 2002
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Re: RA28 Caster
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Fri, 08 August 2003 05:23
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So I guess your front wheels have moved forward a little.
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Location:
Terrigal
Registered:
May 2002
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Re: RA28 Caster
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Fri, 08 August 2003 05:25
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Yup i'd say thats it.
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Location:
Madrid - Spain
Registered:
August 2002
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Re: RA28 Caster
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Fri, 08 August 2003 06:20
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Too easy....I guess the difference would be around the 1/2 inch mark, probably not even noticeable to look at.
You should find it grips a little better on the tighter corners where you are getting some body roll. In a turn the caster will give you a bit of negative chamber on the outside wheel and a bit of positive chamber onthe inside wheel. Great if you have a problem with the front of the car leaning over in a turn.
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Location:
Terrigal
Registered:
May 2002
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Re: RA28 Caster
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Mon, 18 August 2003 05:23
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After a drive to Melbourne and some fun along the great ocean road i've come to like the new setup 
Took a bit of getting used to but now all good!
Cheers
Joel
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: RA28 Caster
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Mon, 18 August 2003 13:49
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How's the tyres wearing now, noticed any change?
And how was the Great Ocean road you bastard?!? You could have invited the rest of us!!
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