DriveFast7

iTrader: (1)

Can someone take it out to a road race track like Mosport and let us know how the steering input, steering response, and bumpsteer are at SPEED?

gamble302

just swap a 12a in your cosmo, it'll almost be a 1st gen

10sec rx7

i want this for a RHD car as well!! please reverse the bracket!! i can get RHD rabbet steering boxes easy, the steering shaft holder will fit RHD car just the subframe needs modding!!

please do it!!

Dale

Manntis

All the body parts will be available through Rotorhead (scoop, widebody, etc). I'm just waiting for Chris to send me decent pics. When I spoke with him today he said he'd have 'em tomorrow, so look for the new stuff on my site within days

guru

I regards to height, yes I did mean the rack now has more ground clearance than before. As for drifting, road course or any other brutal race related use, there is no chance of the system breaking, it simply can not happen. The subframe for the rack is too well built and then seriosuly reinforced just to be extra safe. Major crashes aside of course. In my 1st post here I mention there is NOT any nor will there be any bump steer, having put near 1,000 hard cornering kms on the setup and I've had the vehicle over 200/hr last night,(for the cops reading I was not on public roads...I swear!) no bump steer. AS for fitting with v8 conversions, as long as the v8 pan does not sit lower than the factory pan, you should be fine. As for web...I have been pushing the builder, ready soon and well worth the wait. As for comparison between the old steering box and the rack. We are now talking apples and oranges, the vehicle steers more easily in parking lots and at low speeds, the control and feedback are positive and turn in and correction haver become easier. I have been flogging this setup since I installed it on my car, corner after corner, no change. Way easier to control over and understeer, my car is not stock either. 12a half bridgeport, full suspension, 15x7 wheels with Pirelli p-700s, car is glued to road when the tires get warm, so a great deal of load is being transferd through the steering. As some of you know I am a road course guy, and the track reveals all. So over the next few weeks i have 2 maybe 3 scheduled lapping events, 1 at Mosport and 2 at shannonville. This will be the ultimate testing ground, if the kit performs the way I expect it will at Shannonville and Mosport, it will be fine everywhere. I am doing a "Forks" run this weekend with a local miata club, all road and solo racers. Should be good for omre testing, I will post back and let you know hopw it works out. Talk soon

Chris
CP

rotor vs. piston

For the V8 people will there be a refund if the kit does not fit our car? Again I will be happy to be the ginny (sp) pig for the conversion people. Hell, I might just have to throw a rotary back in the car.

MikeLMR

can this be backed up with numbers ? its quite easy to construct a basic line drawing of the 2 dimensional relationship of all the pivot points and work out how they change with bump travel.

Mike

'85 GSL 302

Yeah, I would be willing to try out the kit and pay for the shipping both ways if it doesn't fit. But I would like a refund if it doesn't fit. At the very least you'd have a definate answer on weither or not it would fit into a ford 302 FB.

Rx7carl

Ackerman specs? Roll center change?

J Oliver

Ackerman specs? Roll center change?


WHAT??
Listen guys it is the best steering I have ever felt on any RX7 and it completely changes the characteristics, ease of drivability, and increases your confidence by 10!!
This is starting to sound like a Viargra commercial.

I have never felt so strongly about any product in its ability to cause such a ++++ profound change in the way the car reacts to driver imput.
Although the Garrett ball bearing turbo is a close 2nd.

Rx7carl

I dont doubt you Oliver, just some of us "pocket protector" geeky suspension types like to know what kind of specs we'll have with this. You say 0 bumpsteer. But thats from seat of the pants right? Have you guys actually measured it like its 'spossed to be measured? If it truly has 0 bumpsteer then you should play the lotto cause your one lucky ****. No offense meant by that last remark.

Pedestrian X

not to soudn liek a n00b but well coudl sumoen explain to me what exactly is this "bumpsteer" you speak of?

Manntis

when a steering box is placed in the wrong spot (typical of kit cars or steering box conversions) the tie rods pivot funny, causing the hubs to move when the suspension flexes. Thus whenever you hit a bump the steering kicks and tries to turn your car.

79+80+84_rx-7

****, if you want to know what bump steer is, come down here and take some back roads.... hehehe.... its not bump steer, its more like bump TOSS! cause it tosses the hole damn car to the other side of the road....heheh.... It only does it in the rex though, cause i guess the springs/struts are so old in it that it just might as well be a go cart.... lol...


Im interested in the kits, but how the hell much would shipping be on that bracket??!?!? and is it just the bracket, or are there links and grade 10 (TEN) bolts included???

list what is exactly included in the kit please


Thanx, Laterz, Andrew

J Oliver

Everything is included as well as shipping.
Price has not been calculated yet because I have not had my meeting with the company who is doing the C.N.C laser cutting for mass production.
I will know more by tommorow afternoon.
I did not measure the bumpsteer but Chris and I could not get the car to do any unusual things while flogging it,so as you said yes it felt great in the seat of my pants!

Hyper4mance2k

iTrader: (40)

a list would be nice. To let us know what we would be buying. And a list of what we need to get from the rabbit.

mcgarret

If this as good as promised, I'm voting you for P.M. of this great land of ours.

You must run tho on the platform of "rack and pinion for all RX-7 drivers!"

Pedestrian X

awsome thnx for lettin me in on this whole thing, thnx to mantis too :]

inittab

How do you measure it?

J Oliver

Put the suspension through its full range of travel and measure how much the rim and tire (wheel) toe in and or toe out. In a perfect world ( in which i live in) the wheel will just stay dead straight. This also changes slightly depending where the wheels are pointed during the suspension travel. I should play the LOTO 649 because on my car I had no bump steer through my suspensions 2.5inches of travel. Using a meter stick in incriments of mm I could not measure toe in or out.
I was going to measure it again using a dial indicator but then I thought that would be useless measuring it in thousandths of an inch incriments.
So ya on "My" car with its minimal susp. travel I have NO bumpsteer. Now does that mean Im gonna win the LOTO?
Wooo Hooo!

MikeLMR

Roll centre is not affected by changing the steering rack ... you'd need to change the pivot points of the lower arm to alter this ... note sure what effect this has an ackerman angles ... it'll be a bugger to work out too


You can measure bump steer by

guru

The bump steer concern was initally valid, in the event the rack was poorly placed. When I refer to no bump steer, what I am explaining is that regardless of the load or lack there of on the suspension no bump steer is evident. The idea that the car will steer itself down a rough road or on whooptees simply does not happen. Regardless of the equation, the best test is still going down the road at big speed with varying loads, and what I am saying is the car does not nor is it going to bump steer, period. As for the shipping, this need not be a point of worry as the kit price will include shipping. hardware supplied will for kit will be of a stronger grade than the hardware used by the factory. As for the pieces required additionally or the list/install procedure and other particulars. Those issues along with final kit price will be addressed later once all materials sourcing and testing is complete.

Chris

79+80+84_rx-7

So right now I can vividly feel the road through my stock setup, with this setup, will I still be able to feel the road, so I know what reactions will fit in different situations?

rotor vs. piston

You can vividly feel the road through your stock setup?? How?? I feel like I'm only making suggestions to my car when I steer, and I have everything new up there.

inittab

That's good! Yeah same here.....