RLCA delrin bushing kit

[BEXE]

So the drawing are in and we are finding the manufacturing for the bushings; this being said the bad part is coming in asking for money for your bushings.

I need list of people who for sure want a set of the S14 RLCA bushings.

Delrin has a very low coefficient of friction, even in a wet (submerged environment) has a very low rate of absorption, has a very small % of change, and had a hardness rating of 85 on the Durometer. All these qualities together making it great for tight tolerance long service applications.

They are similar to the poly bushings in design; they insert from either side ,and then will have a sleeve that slides through the middle. This being said a full set will consist of 8 pieces of delrin and 4 sleeves. The sleeves I am looking for will most likely be "Oil Lite" bronze sleeves/bearings.

With Tower's help I am trying to cut down the cost to around $100/set +shipping. I want to have 10 sets committed to before I give the go ahead. So lets get the ball rolling!

1. Bexe

[NismoPlsr]

1. Bexe
2. NismoPlsr


Are you going to have choice of s13 or s14/15?

[Beejis60]

And these will be used solely with the OEM RLCAs, no?

[BEXE]

Yes they will be for OEM RLCA's if you want to Mic out and make an aftermarket setup to use them that will work also.

S14/S15 are the same; I modeled these for an S14; and I believe from the diagrams and P/N's I have checked the S13 uses the same bushings, but has different arms. If i am wrong please let me know.

[CodyAce]

Sure

[NismoPlsr]

S14/S15 are the same; I modeled these for an S14; and I believe from the diagrams and P/N's I have checked the S13 uses the same bushings, but has different arms. If i am wrong please let me know.

From what I have found (I haven't measured myself), both the arms and the bushings are different. The differences being the bushing shell part of the arm is wider along with the bushing within. So the s14 version would have to be trimmed to fit in the s13.

Energy Suspension lists a different part number for s13 vs s14 for their RLCA kits.
S13 - 7.3115
S14 - 7.3119

Since the NISMO bushings are discontinued it is hard to find an concrete answer but i have seen multiple part numbers listed there also.

[Air]

S13 measurements for you:

Sleeve is 45 mm long
Od is 20.5 mm
Id is 12.4 mm

Bushing
Length is 37.5 mm
Od is 33 mm

Hope that makes sense and is helpful

[BEXE]

So 110% my screw-up for trusting p/n's from another company. The s13 bushings are different. I will look into getting a drawing and plan together for those also. I am very sorry for this inconvenience.

[BEXE]

Sure

Does that mean add you to the list?

[NismoPlsr]

So 110% my screw-up for trusting p/n's from another company. The s13 bushings are different. I will look into getting a drawing and plan together for those also. I am very sorry for this inconvenience.

No worries. I am just trying to help out. Is it just the length that is different? If so i don't think it should matter too much to the machinist, like i said just shave some down to fit s13's.

[BEXE]

Per my measurement the O.D. Is .2994mm larger on an s14. The total length when the two bushings are pressed in from either side give the 33mm of contact length; so basically if the machinist turned the bushings down another .2994 mm they'd be good for an S13

[Beejis60]

I seem to remember that the S13 and S14 RLCA dimensions were the same... I guess the bushings are not. But if it's just the stack height being different, I'll live with throwing them on my POS unless I go with chinaspeed or egay-spec RLCAs and mod them...

[Tower240sx]

the with between the arm mount tabs is wider on S14's so you always need bushings designed for the subframe you are using...

all the parts for the s13 appear to need to be 3mm shorter (please don't take mm beyond 2 decimal places unless we are dealing with bearing grades or honed/lapped/ground things it makes my brain shiver)

[BEXE]

Haha sorry; I'm used I dealing in inches. Good to know on the widths.

[Tower240sx]

well...the dimension you gave was in mm right? (actually it looks like it was in CM since .3mm is only.012 inches and i know the gap is larger than that...hence i assumed 3mm)

[BEXE]

Which dimensions?

[e1_griego]

I'd be in for a set of s14 bushings.

[BEXE]

so thus far we have 3 sets spoken for.

[Def]

S14 rear subframe LCA ears are 5mm wider IIRC.

[turtl631]

I'm thinking about it (S14), I'll get back to you.

[Air]

I will sign up for a S13 set to help you out.

[Beejis60]

Roughly how hard is delrin? I'll just machine these myself to fit.


Chalk me up.

[Tower240sx]

delrin is very easily cut with hand tools

[Beejis60]

delrin is very easily cut with hand tools

I thought I've effed around with them before.... Ya I'll take a set for now. Maybe two. How long till this ish is finalized?

[Matt93SE]

it's pretty durn easy to work. If you just need to face off a couple mm, you can do that with a grinder or hand file.. or belt sander..

essentially, you treat it like wood.

[Beejis60]

essentially, you treat it like wood.

Can I rub lotion into it too?

:D

[Bubba]

Yes you can.

[BEXE]

we're getting the test set going now; I will have pictures of fitment, etc.

Delrin falls in around 120 in hardness on the shore scale "type" R.

[Matt93SE]

you could, but it's so slippery you don't need it.:cool:

[Z28ricer]

Why bronze inners ? I know the global west ones for domestics use an aluminum outer shell, a middle delrin sleeve then a steel inner bushing...

[Matt93SE]

He wants his shaft to be self-lubricating.

[A.Brent]

I'm thinking about going in for a set of these. It'll be about a week and a half before I know for sure.

[BEXE]

Why bronze inners ? I know the global west ones for domestics use an aluminum outer shell, a middle delrin sleeve then a steel inner bushing...

It's been answered; I've seen the domestic design, and they seem to discount the inherent very low coefficient of friction that the delrin has; and the possibility of using bearing grade oil-light for the sleeves eliminates the need for a zerk fitting/passages.

[Beejis60]

Bexe, do you have an idea when these are being finished? I'm not in a hurry, just trying to gauge my monetary situation.

[Z28ricer]

It's been answered; I've seen the domestic design, and they seem to discount the inherent very low coefficient of friction that the delrin has; and the possibility of using bearing grade oil-light for the sleeves eliminates the need for a zerk fitting/passages.


Or they've done R&D and found that to be the best possible way to do it, I guess they could have skipped it, and someone must have gotten really bored with that million mile warranty idea and just threw it in.

Personally i'd far rather go with a design thats been proven, and just grease a few bushings whenever i'm down there doing everything else, rather than save a couple dollars initially.

[BEXE]

Or they've done R&D and found that to be the best possible way to do it, I guess they could have skipped it, and someone must have gotten really bored with that million mile warranty idea and just threw it in.

Personally i'd far rather go with a design thats been proven, and just grease a few bushings whenever i'm down there doing everything else, rather than save a couple dollars initially.

You're right don't buy a set and have a nice day. Problem solved.

Our design is modeled after setups that are used in extreme environments such as in the ocean and other super friendly bushing/bearing locations. You can pay more than double their cost of manufacturing for that blanket effect of a million mile warranty.

Beejis; we are making the test set now; I am sorry I don't have a better timeline. Once t is finished I will have pictures and videos to show fitment etc.

[Def]

I've run delrin RLCA bushings with NO sleeves whatsoever, delrin against stock M12 bolt, for probably the last 4 years. No issues whatsoever, and no wear that I can detect.

I put some marine grease on them at installation, and have some zerk fittings that don't seem to let oil flow to the bolt-delrin interface. Haven't taken them apart, but no real friction to date. I can move the whole rear suspension easy with one hand without the shock hooked up (sphericals and rod ends on everything else).

[turtl631]

1. Bexe
2. NismoPlsr
3. CodyAce S14
4. Air
5. Beejis60 (maybe x2)
6. turtl631 S14


I took the liberty of adding you guys :)

Cody your effort was especially impressive with "Sure"

[CodyAce]

1. Bexe
2. NismoPlsr
3. CodyAce S14
4. Air
5. Beejis60 (maybe x2)
6. turtl631 S14


I took the liberty of adding you guys :)

Cody your effort was especially impressive with "Sure"

I'm trying the minimalist approach in 2012 ;)

[e1_griego]

Add me too :)

[Beejis60]

Might be the last stupid question I have for the next few days....

For those with experience, say I wanted to pop these out and drop them in a new set of LCAs or something later? For example, say I just bent the hell out of my LCAs. Can something like a small screwdriver begin to separate them from the body and you can just pull them out or will it require socket + elbow grease, etc?

[Matt93SE]

Aren't you the one designing them? :) that all depends on the amount of interference you machine into them.

[Beejis60]

Umm, no, not me :confused:

[Def]

The softness of delrin means you'll be able to get them out, but who knows if they'll experience enough wear to still be a press fit in another install.

The RLCA holes are not even close to precision machined as well, so for every one person that has a loose install, you'll have someone else complaining they can't install them with a 20T press.


Welcome to the wonderful world of making precision parts to press into intentionally non-precision assemblies that came on the car. :D

[Beejis60]

Awesome. Alright, then just sign me up for a set of one, bexe.

[BEXE]

Will do; sorry I've been playing with the army the past few weeks. I am a part of the Air Force CERFP.

I will update the list this evening.

[BEXE]

1. Bexe
2. NismoPlsr
3. CodyAce S14
4. Air
5. Beejis60 (maybe x2)
6. turtl631 S14
7. E1 Griego

[No Rotr]

1. Bexe
2. NismoPlsr
3. CodyAce S14
4. Air
5. Beejis60 (maybe x2)
6. turtl631 S14
7. E1 Griego
8. No Rotr

Count me in

[djsilver]

1. Bexe
2. NismoPlsr
3. CodyAce S14
4. Air
5. Beejis60 (maybe x2)
6. turtl631 S14
7. E1 Griego
8. No Rotr
9. djsilver S14

Count me in

I know you're trying to get to 10 so I'll do my part and be #9 ;-)

[Joe D]

1. Bexe
2. NismoPlsr
3. CodyAce S14
4. Air
5. Beejis60 (maybe x2)
6. turtl631 S14
7. E1 Griego
8. No Rotr
9. djsilver S14
10. Joe D

That's 10 if this is still alive.

[BEXE]

Very alive; the machinist is waiting on the oil lite to come in. Then the prototypes will be finished.

[Beejis60]

lets get it on

[CodyAce]

??

[BEXE]

thanks for the poke, I'll ask the machinist. Sorry I've been moving houses and going to trainging courses for new modalities.

[Tower240sx]

Sorry, Machinist is burried in Everything (ask Def how long hes been waiting for a torque plate)

I'm trying to get everything back on track, too much stuff going on, sorry :(

[NismoPlsr]

Well, I already sold off my Energy Suspension bushings. Any estimate on a time frame we are looking at?

[Beejis60]

Well, I already sold off my Energy Suspension bushings. Any estimate on a time frame we are looking at?

quarter till never

[CodyAce]

Sorry, Machinist is burried in Everything (ask Def how long hes been waiting for a torque plate)

I'm trying to get everything back on track, too much stuff going on, sorry :(

I want out of the group buy if this sad sack is cutting the delrin ;) JK!!!!!



PS:
I may have access to a torque plate if he wants to rent/borrow one.

[BEXE]

They're coming, everybody has a life schedule, sometimes it gets a little off track lol.

[Air]

No rush man. Just let us know when they are ready.

[NismoPlsr]

I need some of these. Actually, I am in no rush either but just bumping this thread for a status check.

[onosqv]

Couldn't wait, got moonface bearings instead :-D

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash3/s720x720/540634_10101059828611821_6007700_59678337_13638449 1_n.jpg

[Beejis60]

Couldn't wait, got moonface bearings instead :-D

[img]https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash3/s720x720/540634_10101059828611821_6007700_59678337_13638449 1_n.jpg[img]

Nice. Get them from Nengun?

[onosqv]

No, FRSport.com. Had them special order it a while back. FINALLY put them on. After all the work & cost of buying sphericals, roll center adjuster, removing old bushings, powder coating, honing arms to press-fit bushings in, I was probably better off w/ a fully adjustable rlca.

Would have totally gone delrin inners for the rears if they were more readily available.

[Tower240sx]

sorry guys i get my self way too buried at times.

but I have made a huge effort and tied up 3 projects in the last 2 weeks, so I will start cranking out the stuff in the pile where this project resides.