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bukkaz
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PostSubject: front caster   Fri May 03, 2013 6:11 am

Hey people I just wanted to know what the pro's and con's are of adjusting the caster and what negative caster does and what positive caster does
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KraZe
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PostSubject: Re: front caster   Fri May 03, 2013 6:31 am

If I'm not mistaken the caster is a way of adjusting the wheelbase of the car. Lowering the degree of caster will slightly shorten the wheelbase giving it more "agile" behavior (quicker turn-in, quicker transitions, tighter turning radius, etc.) but it comes at the expense of less stability, more oversteer, and more "twitch-like" steering. A higher degree of caster creates a longer wheelbase which adds stability and grip at the expense of larger turning angles, more "sluggish" steering and more understeer.

However I'm no expert at tuning (I stick to stock/sport suspensions now) so correct me if I'm wrong. pale

Btw I think this belongs in General Chat.

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bukkaz
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PostSubject: Re: front caster   Fri May 03, 2013 6:37 am

Thanks kraze Smile I lowered the caster lastnight on my 86 and it felt great. It felt like it gripped better too and I can now take certain corners without braking Smile its probably just my driving style that it feels grippy
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KraZe
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PostSubject: Re: front caster   Fri May 03, 2013 6:42 am

Then maybe I got it backwards lol

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Hybrid Comet
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PostSubject: Re: front caster   Fri May 03, 2013 8:51 am

Kraze you got it right, excatly Smile
It affects grip too slightly, since it highly modifies camber angles.

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bukkaz
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PostSubject: Re: front caster   Fri May 03, 2013 9:35 am

So lower setting guves you better turn in and stuff at the expence of stability and highter setting gives you better stability at the expence of turn in?
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KraZe
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PostSubject: Re: front caster   Fri May 03, 2013 9:47 am

^Basically, although it's more like the ability of the car to rotate rather than just the turn-in.

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bukkaz
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PostSubject: Re: front caster   Fri May 03, 2013 10:01 am

I will mess around with it later Smile
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MiNd
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PostSubject: Re: front caster   Fri May 03, 2013 10:16 am

My understanding of it is, the more caster, the more responsive your car is in turns.....but.....the more caster, the more unstable your car is.

So my take on it is, as long as you can control the stability, the higher the better

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Koolaid
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PostSubject: Re: front caster   Fri May 03, 2013 11:54 am


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Peacock
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PostSubject: Re: front caster   Fri May 03, 2013 3:51 pm

Definitely just spent a good half hour watching engineering videos lol. Thanks Koolaid!

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Edward40Hands
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PostSubject: Re: front caster   Mon May 06, 2013 12:35 pm

Kraze you werent far off as far as forza goes...

Bukkaz 2 other things to consider:

1. Changing your caster will change you active camber, you may want to use the telemetry to adjust your camber after making caster changes. Less caster will need more negative camber.

2. More caster will increase what some call "returnability" of the steering wheel, causing the front tires to return to center easier when you "let go of the wheel"
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