Visit The Dirt Forum for More Information

Author Topic:   Steering Question
mod4
Dirt Freak

Total posts: 223
posted July 26, 2004 08:08 PM  
I have Profile Steering in my SprintCar. This past Sunday was my 8th time racing it, and now that I am starting to get comfortable I noticed I have between a 1/8th and a 1/4 turn of "play" in my wheel, when the motor is running. My car is a 1998 that I bought last year, it has about 25 races on it since new, is it time to have my steering rebuilt? And the actual effort of the steering could be lighter (for my taste) - when they rebuild it can they change the effort factor ? If everyone has this much play then sorry for the post, lol.

rocket36
Dirt Freak

Total posts: 209
posted July 27, 2004 04:54 AM  
i think you should have your box adjusted/rebuilt as it shouldn't have that much movement.
better still, invest in a neilds box, they are the best i've heard of. they have 2 teeth engaged (pinion/rack) all the time, most other brands only ever have 1 - 1.5 teeth engaged at any time.
the steering effort has more to do with your pump pressure (assuming all your steering links are the correct length).

cozmo
Dirt Forum Racer

Total posts: 99
posted July 27, 2004 07:20 AM  
The neilds box is by far the best. that is all we run in our northeast mods. The neilds runs much cooler than the profile. They also hold up better.

mod4
Dirt Freak

Total posts: 223
posted July 27, 2004 10:53 AM  
Hey, I appreciate they may be better steering systems out there, but I'm Mr Low Funds, getting the box even rebuilt may have to wait, I was just checking how much play I should have when the pump is running and if when they rebuild the box the effort can be changed. I have heard yes it can, change the torsion bar inside and I have heard no, it's the pump not the steering and I have heard it's valving, I guess I will try and call Profile and ask, thanks for the responses.

rocket36
Dirt Freak

Total posts: 209
posted July 27, 2004 03:52 PM  
no problems "mr funds", you could try dismantling the box yourself and finding out how to adjust it (or it may be out of adjustment). the amount of effort required will also be effected by the ratio (i'm not sure if different ratios are available), though all the problems that i have seen are usually caused by a worn pump. i have seen pumps rebuilt which work adequately but still don't match up with a new pump.

sometimes it just costs money to go racing.

goinrcn44h
Dirt Freak

Total posts: 205
posted July 27, 2004 08:13 PM  
J,
generally, there are two ratios available. A 12:1 style ratio, and also a 9:1 ratio. I believe yours is the 9:1 ratio, but I could be wrong. The bar inside is misleading in a way, it doesnt actually make the wheel in reality easier to turn it just adds or decreases the flex in that shaft, more flex, less effort at the wheel to turn it. it just may not be turnin the wheels as fast as what your hands think they are, but you become used to the flex. My box is a .265 which is way soft, and yes, it flexes like a hot russian gymnast. but in bumps its still tough, it doesnt transfer as much back to the driver is a better analogy.
As for the pump performing properly or not, have to have it hooked up and flowed to know if its adequate or not. If the steering seems slow, thats easy to address, just go to a pitman arm that is a couple inches longer than your current one.
As for the play in the wheel.... you must first determine if its actually freeplay, or if its just the shaft flexing. when the tires are on the ground it can feel very similar. if it has excess freeplay, its easy to adjust, its similar to adjusting the bok on a regular street car just harder to get to thats all. I am not 100% sure how those do it, but my KSE is on the right side in the dead tube end.
Help ya...???
M.Harris 44H

goinrcn44h
Dirt Freak

Total posts: 205
posted July 27, 2004 08:30 PM  
J,
Th profile is actually a 12:1 box. But its just made a little smaller and of steel it looked like.
There is a lash adjustment that the ring gear and pinion or screw should have very similar to a rear ends lash/backlash adjustment. Too tight and it will kill it quick. loose and well its just loose and will wear the edges off the teeth faster.
I took mine clear apart over the winter and there is actually not much to them, have one of the guys at the shop take a look, they are just replica;s of a standard chevy power steering box for the most part. they can't be very different and they cant be very complicated.
Once you do it, everyone will want you to take a look at theirs cause most are too scared to look inside themselves. I am the opposite, I want to know why and how it works so if I am in a bind I can fix it and make the race. clean area, lots of clean rags and towels and good tools and enjoy. The worst that could happen is someone has to put it together for you ...lol\
44H

mod4
Dirt Freak

Total posts: 223
posted July 28, 2004 07:15 PM  
M,
Thanks man. The steering speed is cool, my box doesn't have much "flex" once the slop is gone, but most of our tracks down here are ice rinks, not rough, so thats not a problem. It's just got too much "play".

Probably going to leave it alone for this weekend, and then take it apart and take a look. Thanks for your time, man.

Back to the Archives