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Old 10-07-2001, 08:06 PM   #1
che
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Castor Question?

Okay, this may not be an easy question to answer but here it goes:

Keep in mind with all else being equal and the fact that you found a good base setup. Running on a tight high bite indoor carpet track.

What would the effect have if the ONLY thing I chaged was the amount of front castor? Say I went from 7deg to 5deg...

Does it make that much of a difference? If so would more or less be more beneficial? Again, small, tight, grippy carpet track with foam tires (or does it matter track size and bite?).

Thanks,

Che
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Old 10-07-2001, 08:19 PM   #2
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I believe it would give you a little more agressive initial turn in?
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Old 10-07-2001, 08:46 PM   #3
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More Caster 7 deg - Less off power turn (initial), more on-power turn
Less Caster 5 deg - More off power turn (initial), less on-power turn.

It depends on how "in-tuned" you are with the car has to whether to will notice a 2 deg change in caster. I certainly can with my Xray!
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Old 10-07-2001, 08:57 PM   #4
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The effect of more casor is raising the front end more when you turn the wheels. I downloaded the X-ray tuning guide, and it states:

Less Castor (more vertical) increases OFF-power steering INTO a corner, but decreases straight-line stability.

More Castor (more laid-down) increases ON-POWER steering OUT OF a corner, and increases straight-line stabilty, but makes the car harder to turn in.

Josh
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Old 10-07-2001, 10:39 PM   #5
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Think of more caster as adding high speed steering and less as adding low speed steering. Low speed=slowing down for the 180* turn. High speed = thru the sweeper. This helped me to figure it out a little better.
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Old 10-07-2001, 11:56 PM   #6
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Quote:
Originally posted by Speedo
Less Castor (more vertical) increases OFF-power steering INTO a corner, but decreases straight-line stability.

More Castor (more laid-down) increases ON-POWER steering OUT OF a corner, and increases straight-line stabilty, but makes the car harder to turn in.

Josh
Wasn't that what I said??!
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Old 10-08-2001, 02:21 AM   #7
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Thanks guys, you gave me an idea: How about using less castor combined with a body like Alfa 156?

Then the initial off-power steering is great and since the body dominates at higher speeds, the Alfa give the good high-speed turning? Sounds like the only thing missing is on-power steering going out of a slow speed turn like a hairpin?

Any comments?
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Old 04-26-2011, 11:08 PM   #8
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Quote:
Originally Posted by robk View Post
Think of more caster as adding high speed steering and less as adding low speed steering. Low speed=slowing down for the 180* turn. High speed = thru the sweeper. This helped me to figure it out a little better.
I think it also helps in the 180's once your in the turn more castor gives you more wrap....


took me a while to get an answer, but I think I got it.
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Old 04-26-2011, 11:11 PM   #9
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Quote:
Originally Posted by chubbspeterson View Post
I think it also helps in the 180's once your in the turn more castor gives you more wrap....


took me a while to get an answer, but I think I got it.
I was just thinking about this. Thanks.
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