NEW Top Front Arms

I will explain more

They do ware out although with normal road suspension specs of camber and caster they nylon bushes last sort of ok. Hornsby Nissan are more than aware fothe problem with the R32 GTR which has the same arms although offset slightly and replaced most if not all these top arms for free under warranty with the 100 they sold in 1991.

The stock arms with replacement urethane bushes also wear out whilst the all metal ones with bearings bend and come apart, as they have no play and they bind and twist as they want to pivot but can't.

If you do what we did to really test and show what was going on and you have the Midori copy arms then loosen the Allen keys of so it can move freely, remove a front strut with spring, disconnect the sway bar and with car on hoist and wheel bolted to hub, and with flat transmission jack under the wheel, raise and lower the car with the hoist. YOu could do this on the ground with blocks of wood and a hydraulic trolley jack which wold work on release as nto fast enough going up. It is very obvious as shows the twisting or rather pivoting the arm does as it goes through its natural arch unrestricted. It si only a few degrees I guess but enough to be a problem.

Otherwise go to this link below and scroll down and download and watch the vid showing this test we did. Keeping in mind it is not as obvious watching a small vid compared to seeing it live but you get the idea.


http://www.uniqueautosports.com/racecarpage5.htm
http://www.uniqueautosports.com/ProjectZed/susptravel.jpg

 

I'm impressed with the R & D

Good work John Possibly the most informative thread I've seen in a long time.

Look forward to hearing end result of testing and price. :zlove:

 

legal for street use?

 

Not

For road use technically no replacement control arm is legal. For that matter sports exhaust, ram pods, after market blow off valves etc etc are all technically illegal. I have never heard of anyone having a problem with after market control arms. They are not seen anyway.

Thanks K Zed and re the price, they should not be much more than all others on the market, although depends on volume.

One other point not sure if I mentioned earlier but anyway, on the race car we removed the high speed low speed solenoid on the rack as it was 540 grams and not needed. The steering was slightly heavy at low speed but not much of a problem. Anyway as soon as we fitted these arms we instantly noticed the steering lighter and had more feel on the track and more response. With the engine off it was very hard to turn the wheel pushing the car around the workshop and with new arms amazingly much easier also. We realised the arm must be freed up and no longer binding even without the strut moving up and down. We confirmed this visually with the same test mentioned in earlier post although leaving it at static height. Sure enough the top arm pivots when we turned the steering wheel. Keep in mind this is with increased camber and caster over a road car although it still happens with less camber and caster just not as much.

Pic below is one of the prototypes.




Making and designing phase of prototype.

 

any rough idea on how long it'll be til we can all get our grubby little hands on these John? And any idea on price, or is that a secret for now?

 

they look good to me ,,

but i must say as someone mentioned before , that some units out there just don't look sturdy enough not ridged , strong , i just don't want us to put our money into something that may break in a year or 2 ....

yours look good to me,

the center bolt , is that high tensile...

will the bearings seize, in due time?

 

More answers

Don't know and don't know exactly other than as mentioned not much more than the others on the market, and should nto be long although prob a month or so. I emailed the engineer who slightly redisgned them, to see how production run is looking and finalising a few things including lengths to cover all or most bases of requiremnts.

 

Good to hear John

 

Are they ready yet?

Hi John

Any Updates on th production status?

 

any updates?

 

Yeah! Keep hassling him Rob

 

Whats the go?

 

I want these for my track car, So I am down

 

Thats

1mm for the cops anyways

 

Questions.....

Why was the gusseting been dropped
( I actually like the original prototype over the final production item )

Final Production material.... ???
Cad plated mild steel I assume

Threaded section... stainless ????
( mild steel would be prone to corrosion if left un-protected.... nothing worse than rusty bolts in the wheel arch area )
:bash:

"lubrication systems"
was this dropped or not shown ??





Kingy