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quick ratio rack or steering quickener?
tapkutez - 19/12/17 at 11:00 PM

Hi, maybe you know what lock to lock you get with 2:1 steering quickener, is it the same like you get with quick ratio rack about 2.7 lock to lock?

ReMan - 19/12/17 at 11:15 PM

That will depend on the ratio of the standard rack. The quickener will multiply (divide) it by 1.5 or 2 whichever it is.
That may well take it below 2.7. But may add complication, fail points and play too. But i have no personal experience of using one

[Edited on 20/12/17 by ReMan]

coyoteboy - 20/12/17 at 03:08 AM

'sjust a gearbox on the input shaft. 2:1 will halve your required steering input rotations but double the effort.

nick205 - 20/12/17 at 09:05 AM

What steering rack do you have?

It may be a similar cost and certainly more reliable to simply fit a quick rack!

Angel Acevedo - 20/12/17 at 04:02 PM

Lock to lock in degrees of Steering Wheel Rotation is determined By the rack.
In the quick rack you have less teeth on the pinion.
A normal rack will have more.

On top of that you will have the quickening action of the quickener.
At the expense of Steering Wheel Effort.

I donīt quite understand your question.
Maybe if you explain what are you trying to achieve....
Steeering quickener on top of an already quick reack may be tiring on long trips as a little movement may mean "accidental" lane changes...
And even more tiring in parking situations due to increased effort needed at low speed.

coyoteboy - 21/12/17 at 03:31 AM

quote:
Originally posted by Angel Acevedo
Lock to lock in degrees of Steering Wheel Rotation is determined By the rack.
In the quick rack you have less teeth on the pinion.
A normal rack will have more.

On top of that you will have the quickening action of the quickener.
At the expense of Steering Wheel Effort.

I donīt quite understand your question.
Maybe if you explain what are you trying to achieve....
Steeering quickener on top of an already quick reack may be tiring on long trips as a little movement may mean "accidental" lane changes...
And even more tiring in parking situations due to increased effort needed at low speed.


I think they're trying to decide between buying a quick rack and fitting a gearbox.

tapkutez - 21/12/17 at 06:44 PM

yes, I dont know what to choose, I have original sierra steering rack shortened by MK INDY, and I know from my last MK INDY that it is very hard to control car with original steering rack. So what is better, to fit external steering quickener (2:1) or to put quick ratio shaft in my original rack (2.7 turns lock to lock).

Angel Acevedo - 21/12/17 at 07:12 PM

quote:
Originally posted by tapkutez
yes, I dont know what to choose, I have original sierra steering rack shortened by MK INDY, and I know from my last MK INDY that it is very hard to control car with original steering rack. So what is better, to fit external steering quickener (2:1) or to put quick ratio shaft in my original rack (2.7 turns lock to lock).


One thing is Lock-to-Lock and another Rack total Travel.
Provided travel is the same.
I think Steering quickener on standard rack would give the fastest acting steering.
It may be what you want, but not what you may need.
Driving cars fitted with different options may help you decide.
As in most issues related to building your own car, your perferences dictate design.
And sometimes you donīt know what is best until you try it on the road.

ReMan - 21/12/17 at 08:01 PM

?Think a std rack is 3.6
id go for a quick rack, probably cheapest option and will likely be the nicest driving solution