Subject	FUCA info and questions etc
Posted by	Rob260 on September 26, 2012 at 5:58 PM
	This message has been viewed 1090 times.
In Reply To	New SPL FUCA's posted by aliaZ on September 25, 2012 at 08:50 PM
Message	Good to see some informative discussion etc. For those that are interested in the need for a pivoting section... Unique Auto Sports here in AUS race a very competetive "Time Attack" type Z32. They started using a puvoting style top control arm back in 2007 after finding that the top control arm actually wants to pivot through an arc rather than travel straight up and down. You can see the twisting motion from full droop to full compression in action (note pivoting front arm has been fitted) quite clearly in the vid below. 300zx Front Suspension Travel Anyway this is not such a problem when you have bushings fitted to absorb the twisting load (although it will of course accelerate wear on the bushings), but when you have bearing such as most aftermarket front upper control arms the twisting load is applied to the arm rather than abosrbed through the bushing. This is the first version that they came up with and used on their race car as well as a customers road GTR for the better part of two years. Here you can see the pivoting end clearly. Very similar to the SPL design except they have bearings at both ends. This is a pic of the design that went into production in 2009. No need for the gussets. Disregard the shitty welding, these were a prototype/mockup, production versions were Tig welded and used a cotter pin instead of a grub screw to secure the body. Mixed success with this design -they are OK on my car but some running super low bent the M30 threaded centre section at max extension. Version two (below) overcome this problem with beefier construction and longer female section. So I suppose we in AUS should be flattered that SPL have been paying attention? So questions... Are the SPL units going to have bushes or bearings at the outer end? I assume they're not going to bolt up as is, surely this would lead to a very harsh ride? What is the thread diameter of the rosejoint? Unless it is captured in some kind of "body" section it is going to bear a fairly significant load...
Follow Ups	New SPL FUCA's - aliaZ 20:50:27 09/25/12 I like it. (n/m) - BigTDogg (MA) 21:06:46 09/25/12 GD, those are beefy. (n/m) - evan_aggie 21:30:29 09/25/12 aren't they lovely~! - Halo TTZ 21:35:06 09/25/12 Any idea on the release date Don? Thanks for sharing! (n/m) - boileralum 21:40:50 09/25/12 dibs (n/m) - genic 21:42:44 09/25/12 Re: New SPL FUCA's - Rob260 21:50:39 09/25/12 Agreed. - Bigwill837 22:08:38 09/25/12 Great design, they looked very strong in person. (n/m) - DarkZide 21:59:27 09/25/12 Yep Sean brought one to the tt.net banquet - Piranha 22:38:26 09/25/12 beefy (n/m) - Alan(MD/NJ) 22:44:45 09/25/12 Re: New SPL FUCA's - johnathanbarnes 22:46:52 09/25/12 I like. (n/m) - SimaYi 23:39:10 09/25/12 Looks awesome. - Evan_Wright (Ca) 23:39:26 09/25/12 The 300 degree kit and stock arms don't get you where you - zgene4 08:28:25 09/26/12 As you know it depends on ride height. - Evan_Wright (Ca) 13:36:40 09/26/12 Why would this item be track-specific? (n/m) - TriniTT 08:37:10 09/26/12 bearings vs bushings - aliaZ 09:33:11 09/26/12 I didn't really notice a difference when I swapped out my - TriniTT 12:51:24 09/26/12 Is it wrong to want to lower the z but maintain a soft stock - Evan_Wright (Ca) 13:06:54 09/26/12 i perfectly understand what you are saying... getting old :) (n/m) - ztunerz 13:16:23 09/26/12 No. But I just installed the Powertrix fucas and tension - TriniTT 15:15:08 09/26/12 Too bad Evan doesn't pay you to drive his car for him (n/m) - zgene4 13:13:27 09/26/12 How is the heim joint going to - xpwarrior 23:59:12 09/25/12 I think that's the point - Jayru 06:21:14 09/26/12 yup (n/m) - Antihero 13:47:29 09/26/12 by knuckle arm do you mean the vertical upright - aliaZ 06:25:03 09/26/12 Yes i'm talking about the vertical upright. - xpwarrior 08:48:44 09/26/12 Re: Yes i'm talking about the vertical upright. - aliaZ 09:31:11 09/26/12 The single heim looks like it would let - xpwarrior 11:43:57 09/26/12 I can't say for sure, but I think the heim joint is - aliaZ 12:19:29 09/26/12 Loads? - Obeeone 11:57:01 09/26/12 actually... - aliaZ 12:36:50 09/26/12 the ikeya lower control arm has an interesting feature - aliaZ 13:59:01 09/26/12 That looks like an awesome design (n/m) - na300zx (OH) 14:05:42 09/27/12 are you going to buy those? (n/m) - maglito 19:33:47 09/27/12 thinking about it (n/m) - aliaZ 12:21:05 09/28/12 the heim joint would have to be inboard now that I - aliaZ 12:26:07 09/26/12 Moving the heim joint inboard.. - xpwarrior 09:03:51 09/27/12 this is true (n/m) - aliaZ 11:26:21 09/27/12 Yay for engineering :) (n/m) - black300zx 05:52:39 09/26/12 What is "the design flaw that exists in most other arms"? (n/m) - Attridge_300ZX 07:24:21 09/26/12 most arms don't allow for any twist unless they are bushed - aliaZ 09:32:24 09/26/12 These are blatant copies of - zgene4 08:30:54 09/26/12 That makes so much sense. (n/m) - TriniTT 08:36:08 09/26/12 That looks awesome - RobZ32 10:15:26 09/26/12 excellent (n/m) - Ahmed (Chicago) 10:36:40 09/26/12 Glad to see SPL back on the wagon - BlackholeZ 10:58:04 09/26/12 Beefy product = Beefy cost. =) (n/m) - evan_aggie 11:58:52 09/26/12 Quality and safety are priceless to me :) (n/m) - Piranha 12:54:52 09/26/12 wonder how hard it would be to cut and extent the stock arms - ztunerz 13:14:43 09/26/12 OEM FUCA extended 0.70" on my car at 1.25" drop - Gordo 93TT Daytona 16:52:14 09/26/12 The OEM has been modified? (n/m) - zgene4 18:40:05 09/26/12 I think your AMS FUCA and are over extended ans will fail (n/m) - njz 18:46:47 09/26/12 AMS is gone. Now have OEM FUCA with 300 Degree kit behind. - Gordo 93TT Daytona 19:35:32 09/26/12 Ok good move (n/m) - njz 20:32:32 09/26/12 Awesome. I like that idea (n/m) - ztunerz 23:56:43 09/26/12 Now that's a great design!! (n/m) - Ash's Z 14:37:30 09/26/12 FUCA info and questions etc - Rob260 17:58:44 09/26/12 more questions - Rob260 18:09:35 09/26/12 Re: more questions - aliaZ 07:11:08 09/27/12 thanks for the pics and info - aliaZ 07:07:15 09/27/12 Re: thanks for the pics and info - Rob260 18:05:30 09/27/12 FUCA me...that looks nice. (n/m) - gizmo 19:05:27 09/26/12 Ok, I seriously LOL at that. :) (n/m) - RAGTPZ 19:30:50 09/26/12 Sexy. SPL always does amazing things. (n/m) - Milo (SATX) 01:45:34 09/27/12
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