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Old 09-11-2009, 10:44 AM   #1
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Quick steer ratio manual racks

Anyone have one? ANy pics?

Where can I get one? The spohn manual rack is 3.75 turn to turn which is too much. I am looking for something with a quicker steering ratio.
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Old 09-11-2009, 05:22 PM   #2
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Re: Quick steer ratio manual racks

Isn't less than 3.75 l-to-l getting into Indy/Formula car range?
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Old 09-16-2009, 02:46 AM   #3
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Re: Quick steer ratio manual racks

you have to realize two things:
a) this is a manual rack, ie, no power steering. anything less will really wear you out.
b) rack and pinions are measured differently... the lock to lock only crudely estimates the actual ratio, which is really determined by the pinion size

another thing to keep in mind is that to properly use rack and pinion you will need to shorten your spindles, which will effectively increase the rate of steering.
you can shorten the spindles even more and have a much higher rate.
IMO steering systems should be measured in degrees of steering wheel input per degree of wheel turn...
the lock to lock thing is really outdated.
for example
box a from an s-10 is a 2.75 LTL box
box b from a camaro is 2.6 turns LTL.
immediately the camaro one looks like a faster ratio, but upon closer inspection, you find that the s-10 box has a greater throw or angle at max lock than the camaro one, so although you turn the wheel more to get to full lock, you get more steering angle in the end.
the truth is that these two boxes are both 12.5:1 or whatever the ratio is. the point is that the ratio is the same and you cannot use turns-to-lock to accurately describe a steering box


[/rant]



sorry, i just had to get that out
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Old 09-16-2009, 09:18 AM   #4
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Re: Quick steer ratio manual racks

Less turns from lock to lock also means you need more mechanical leverage to turn the wheel. Without using a power assist, this increased leverage is achieved by using a larger diameter steering wheel.

If you want a quick ratio steering, stick to a power assist. You won't like a quick ratio manual steering.
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Old 09-16-2009, 09:51 AM   #5
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Re: Quick steer ratio manual racks

It's been a while, but I recall a manual rack being really heavy when moving slowly, so that is another compromise you might have to make.
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Old 09-16-2009, 12:40 PM   #6
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Re: Quick steer ratio manual racks

Quote:
Originally Posted by Scorpner View Post
It's been a while, but I recall a manual rack being really heavy when moving slowly, so that is another compromise you might have to make.
Yeah, manual racks are at their worse when at a dead stop, more so if you have wide tires. Once you're rolling, it doesn't matter as much.

I'm kinda skeptical of a manual steering on a camaro, my steering is pretty heavy in stock form.
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Old 09-16-2009, 02:13 PM   #7
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Re: Quick steer ratio manual racks

Quote:
Originally Posted by RED_DRAGON_85 View Post
another thing to keep in mind is that to properly use rack and pinion you will need to shorten your spindles
According to Spohn, their kit is a direct bolt-in replacement for the stock power steering.
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Old 09-16-2009, 05:24 PM   #8
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Re: Quick steer ratio manual racks

it bolts in but your steering radius will be reduced
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Old 09-17-2009, 08:44 AM   #9
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Re: Quick steer ratio manual racks

You can use Racecrafts drop spindles with modified steering arms to help get back the steering radius. I ordered a set. We'll see in a few weeks once things start coming together.
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Old 09-17-2009, 08:44 AM
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