Power Steering.... Any one done it

[masterfabr]

Something I just thought about.Are you going to be able to load the pump at idle and max rpm to see what the effect is? Are you going to run the alternator at full output while testing also?

[yoshi]

Originally Posted by masterfabr\";p=\&quot

Something I just thought about.Are you going to be able to load the pump at idle and max rpm to see what the effect is? Are you going to run the alternator at full output while testing also?

I was thinking I need to set the power steering pump up for the dyno run with a steering wheel so we can do a couple pulls with no load, then wheel cranked to the right or left with some kind of resistance, and maybe my light bar? *It may be more work than I feel like doing for the break in on the dyno, so I may need to get the whole car assembled and run it on a car dyno with all the lights on, then pull of the belt connecting the alternator and power steering pump and run it that way to compare numbers.

I think the biggest concern is load at idle, and since there is only a 1 hp draw at idle, It will be well above that to take off and even turn....

[masterfabr]

There will always be the times you turn the wheel at idle.Nearly full load at idle is what I'm concerned about. And then the alternator will be a considerable load by itself.Time will tell .

[yoshi]

Originally Posted by masterfabr\";p=\&quot

Time will tell .

agreed, this setup hasn't been done before to my knowledge, so all we can do is try. *I do feel better about the concept with the amount of hp and torque the motor will be putting out.


I can't recall ever turning while at idle. *I don't see why anyone would sit and crank the wheel back and forth without giving the motor any gas, and even a little gas jumps you to 4k, even more when you are taking off..

[yoshi]

you do make some good points master, if it does turn out that there is excessive load on the motor at engine idle while cranking the wheel, I will have to make it clear to people running the power steering setup that they are not to turn the wheel at idle. *This shouldn't be hard to get use to, as there is no need to turn the wheel when your not moving, but if it's a problem it would be something that owners would need to be aware of as a side effect of running a power steering setup off the motor like this. *Running the unit will not hurt the motor at idle, only loading it IF it is overloaded...

[masterfabr]

The most it would do is kill the motor. I think if you'd think about it there are many times you will be loading the pump at idle or near it.Not trying to be - about this.I'd like to see it work out as I think the power steering will be very nice.I'll use it on mine if your guinea pig works.

[yoshi]

One other thing is that the max rpm of the pump is less than half of what the motor produces, so he had to gear the pump down quite a bit, which leads me to think that the power steering really won't kick in much unless you get the rpms up a little, so there might be a failsafe built in with the basic design to keep the rpms down. *In other words, sitting at idle, the power steering may not even work good if at all, but raise the rpms over 4 or 5k and the power steering will start to kick in. *I really have know idea the specifics of how that works as far as when the pump kicks in and at what rpm, but I will do some more research tomorrow on the unit and see what I can come up with...

[Bugpac]

cant see this setup putting much load on the engine at anytime, pretty light weight car here...Not like grandmas station wagon...

[yoshi]

Originally Posted by Bugpac\";p=\&quot

cant see this setup putting much load on the engine at anytime, pretty light weight car here...Not like grandmas station wagon...

that's what i'm thinking, but I accept the possibility that there may be some issues until I get some literature telling me otherwise, which will begin tomorrow. *I'm thinking if it works on a quad, it will work on a busa motor, the power steering unit is smaller than a can of pop.


After a little more reading just now, there are some people saying there is no hp loss while going straight, so it's between zero and 1hp so far in that dept, and the other numbers for total hp loss for bigger units on bigger cars that really need some power to turn bigger wheels on street are between 1-1/2 and 5 hp while in use....

[Bugpac]

Whos crying about 5 hp? You cant have top performance and luxury..