Racer X Fabrication suspension parts, and development

[Jeff@Racer X Fab]

Here are a few more pics of the rear lower control arm that is fully adjustable on the vehicle. Also a few pics of our parts getting ready to be sent out for zinc plating and powder coat.

[Huehuecoyotl]

Originally Posted by racerx1715

Here are a few more pics of the rear lower control arm that is fully adjustable on the vehicle.

yes, love the pics
my R-compound tires make things twang on my cars rear end when I push it to redline on corner exit, when I push enough to break them loose...they didnt engineer stiffness to handle 255whp, in a lateral track setting with high grip rubber, if you ask me.

Ok, you have given us numbers on steel used, numbers on weight and I think you have everyone's attention at this point. especially those of use laying down more power and TQ...so when is this stuff available for sale,EDIT just found pricing- is this shipping now?


Cause I need to deal with my handling/power application issues, and need to dial back that rear camber to get some grip ASAP

I'm interested in the following items:

-rear Upper control link, wow that looks stout
-rear lower camber link, """""""""""
-rear toe link. yup.

let me figure out how to put my power down with a better alignment that holds its spec and I will then move up front. PM Sent for pricing on all the above.

[Jeff@Racer X Fab]

Originally Posted by Huehuecoyotl

yes, love the pics
my R-compound tires make things twang on my cars rear end when I push it to redline on corner exit, when I push enough to break them loose...they didnt engineer stiffness to handle 255whp, in a lateral track setting with high grip rubber, if you ask me.

Ok, you have given us numbers on steel used, numbers on weight and I think you have everyone's attention at this point. especially those of use laying down more power and TQ...so when is this stuff available for sale,EDIT just found pricing- is this shipping now?


Cause I need to deal with my handling/power application issues, and need to dial back that rear camber to get some grip ASAP

I'm interested in the following items:

-rear Upper control link, wow that looks stout
-rear lower camber link, """""""""""
-rear toe link. yup.

let me figure out how to put my power down with a better alignment that holds its spec and I will then move up front. PM Sent for pricing on all the above.

We are currently getting parts ready to have them on the shelf, we have been filling orders as they come in with a two week lead time at the moment. We will be offering a pre-order/group buy as well at a discounted price on all suspension parts.

[mrk1]

Great looking parts, I've been looking for some trailing arms

[Huehuecoyotl]

Originally Posted by eckoflyte

just placed an order with race x fab. hands down best customer service i've seen yet. do your research, these guys make a quality product vs many off the shelf parts out there. they'll answer every question you have and can make custom bits/tweaks to your liking.

the after sale support alone is worth it

i looked into other LCA and considered GT Spec/Whiteline/Stance/Cusco/SPC/Agency Power/Race Fab (the NZ company, not race x fab)/Hancha

in the end I chose this as I felt it had an overall advantage as a package vs the above products.

-ease of adjustment (no subframe getting in the way)
-its strength using 4130 chromoly body and teflon lined steel rod ends (comes with dust boots for the street wary too). this factor is extremely important to me as i've experienced control arms (albeit stock) bend from spinning out and running sideways into a ripple strip.
-no poly flex since using rod ends (can also be easily sourced and replaced if needed)
-3.7 lb vs 2.2lb stock. good weight compromise considering materials used
-very good pricing and after sale support

Thanks for your post

...Cant wait for GB, only one month before it gets really hot here

so...I too just placed an order, and quoted the poster above as my sentiments are mirrored in his post.

I ordered:
-rear lower camber links
-rear toe links
for now
trailing arms next..all in cro mo steel! They are indeed on to something with their 'package' approach.
I dont know if I will 'need' the UCAs, but I need to go see whats happening after some track time to the oe bushes in there etc

Somehow I was never ever comfy with aluminum, doing as much mtn bike racing as I once did(older and fatter now), I have seen aluminum fatigue, crack, and fail more than I like. Then there is the usage of metals that can gall, alum and steel threaded rod is asking for corrosion and galvanic BS over time, yeah, I know stuff is all coated these days but coatings do wear off... we have salt in the sand here by me. Why spend more to get aluminum? I couldnt justify it at all.

While I have never seen this failure myself on an LCA, unlike lots of other guys who 'tuner'-ize their cars, this is not a bling part for me. its purely for function for me. I'm not stancing out my car, I'm running r-comps and need something that can not fail. I'm adding more FI power upgrades next week and need something made with that in mind.

Stoutness of 4130, its way better fatigue vs alum, the suspension parts on the car are stamped steel from OE, so this is an upgrade in all ways. Aluminum bits and members on my BMWs and porsche cars are solid, even beefier than something like the stance part. So that was easy steel, lighter stronger,sold.With the quality of the heat cracked roads here, the amount of washboard we have, I sleep better on steel than I do alum. Sure one can argue the fact that alum can be made as strong or stronger, but those of you who track, know steel is steel @ end of day.

cant wait to get them, will update my thread. I'll be at AMP this weekend on the oe stuff, trying to do some final dialing in and tests on other stuff on my car, and hopefully I can make button willow mid month! This level of stoutness will be a great option for those doing drift setups too! after a careful this vs cusco, look at the cusco closely

Once you add in the three bolts, the unitized structure is just what I wanted.

[eckoflyte]

Originally Posted by Huehuecoyotl

Thanks for your post

...Cant wait for GB, only one month before it gets really hot here

so...I too just placed an order, and quoted the poster above as my sentiments are mirrored in his post.

I ordered:
-rear lower camber links
-rear toe links
for now
trailing arms next..all in cro mo steel!


Somehow I was never ever comfy with aluminum, doing as much mtn bike racing as I once did(older and fatter now), I have seen aluminum fatigue, crack, and fail more than I like. Then there is the usage of metals that can gall, alum and steel threaded rod is asking for corrosion and galvanic BS over time, yeah, I know stuff is all coated these days but coatings do wear off... we have salt in the sand here by me. Why spend more to get aluminum? I couldnt justify it at all.

While I have never seen this failure myself on an LCA, unlike lots of other guys who 'tuner'-ize their cars, this is not a bling part for me. its purely for function for me. I'm not stancing out my car, I'm running r-comps and need something that can not fail. I'm adding more FI power upgrades next week and need something made with that in mind.

Stoutness of 4130, its way better fatigue vs alum, the suspension parts on the car are stamped steel from OE, so this is an upgrade in all ways. Aluminum bits and members on my BMWs and porsche cars are solid, even beefier than something like the stance part. So that was easy steel, lighter stronger,sold.

With the quality of the roads here, the amount of washboard we have, I sleep better on steel than I do alum. Sure one can argue the fact that alum can be made as strong or stronger, but those of you who track, know steel is steel @ end of day.

cant wait to get them, will update my thread. I'll be at AMP this weekend on the oe stuff, trying to do some final dialing in and tests on other stuff on my car, and hopefully I can make button willow mid month!

agreed. I ended up getting the rear lca and toe arms too. Requested bump steer correction on the toe arms too and race x fab were happy to oblige. just can't beat its quality for the price and service.

[Jeff@Racer X Fab]

We received parts back from zinc coating, and powder coating over the weekend. We have the adjustable toe links, adjustable sway bar end links front and rear have a black zinc coating. The trailing arms, rear lower control arms, and front lower control arms are black powder coated.

Here are a few pics of some the parts, the lower front control arms are finished and we will be wrapping the final touches on the upper rear control arms over the next few days. For those of you interested in our parts we shipping as orders come in, or depending on the order sending parts out for powder coat. Usually 3 to 5 day turn around for requested colors.

The adjustable front lower control arms provide Roll center adjustment up to 2 inches.

[Huehuecoyotl]

Whats pricing like on the adjustable front and rear sway bar end links a la carte each? any deal for combined?

[Jeff@Racer X Fab]

Originally Posted by Huehuecoyotl

Whats pricing like on the adjustable front and rear sway bar end links a la carte each? any deal for combined?

Pricing for the rear adjustable end links is: $99.00

Front adjustable end links are a little bit more expensive but not much: $119.00

I'm sure we could look into a package pricing deal for those interested in buying both front and rear.

[Captain Snooze]

Stupid question time. Ready?
1/ If one has both adjustable rear upper and lower control arms what's the correct procedure for adjusting camber? I mean (I think) it would be possible to extend both the upper and lower adjusters, have no camber change but you have moved the entire wheel outwards. I am guessing that having both upper and lower adjusters makes geometry changes more challenging to get spot on. That is, getting the left and right wheels the same distance from the center line of the car.

2/ What advantage is there to be had with adjustable trailing arms?


Thanks.

[eckoflyte]

Originally Posted by Captain Snooze

Stupid question time. Ready?
1/ If one has both adjustable rear upper and lower control arms what's the correct procedure for adjusting camber? I mean (I think) it would be possible to extend both the upper and lower adjusters, have no camber change but you have moved the entire wheel outwards. I am guessing that having both upper and lower adjusters makes geometry changes more challenging to get spot on. That is, getting the left and right wheels the same distance from the center line of the car.

2/ What advantage is there to be had with adjustable trailing arms?


Thanks.

Upper arms are significantly lighter than stock and so present a greater weight saving over the LCA option. The LCA Racer X Fab make are actually heavier than stock. Upper arm is also less susceptible to toe changing when camber is adjusted. Running both would be nice but it would be difficult as you said to preserve the same track width/geometry if you were to adjust both, you'll need a more precise alignment which only a dedicated suspension shop can provide and can be more costly (don't think you local tyre shop would even bother with these sorts of settings). In my opinion, if you were to run both, fix the length of your LCA (counting the threads) and only adjust the upper arm. So you know its giving you the same track width on both sides.

However you also must consider it is more time consuming to adjust a UCA due to its positioning and would cost you more in the long run for alignments as the time spent on the job would likely be longer.

[Captain Snooze]

Thank you for your detailed reply.
Do you have any thoughts on the adjustable trailing arms?

[eckoflyte]

Originally Posted by Captain Snooze

Thank you for your detailed reply.
Do you have any thoughts on the adjustable trailing arms?

Aside from using ball joints in the adjustable arm to reduce flex and being lighter, it should also allow caster adjustment, to what extent I am unsure. I believe the castor correction is used to tune out bump steer. This aspect is much more difficult and is beyond my experience. Something I personally wouldn't mess with if you aren't in the know. Caster isn't really the correct term to use in the rear as you don't steer with the rear wheels, but thats the closest term I have to describing what you're looking at. Suspension gurus can chime in.

[Shit Luck]

i think the rear trailing arms are adjustable to change anti-squat. not positive but that is what i have always known it as.