Stingxray

Well after a year or so ...... We have completed the welding & assembly of the bearing housing bracket (No longer a trailing arm).They turned out better than expected. Now maybe I can get moving on this SWC project. My Welder called them " Suspension Jewelry" ! Yes...... that is 304 -L Stainless steel.... Assembly should start shortly .....as it is My day off and its raining

groovyjay

Yes yes yes! Are you planning on mass producing these? I'd sure like to get a set!

TheSaint

Looking good

Stingxray

Groovy jay: I couldn't mass produce this set up..... would certinly be bankrupt after 10 sets. Cost of Stainless Steel , Splined -Telascoping half shafts, water Jet or lazer cut patterns, then tig welded up. I have just enough pattern's cut for 2 sets......

MosportGreen66

Nice work! What's the benefit to this setup vs a standard rear trailing arm suspension?

Best,
Dave

groovyjay

If you need to get rid off the second set I'd be more than willing to buy it from you!

jim lockwood

If done correctly, it gets rid of the rear bump steer inherent in the trailing arm design.

It is, essentially, the same architecture as the C4 rear suspension.

Very nice fabrication!

Jim

66since71

Guldstrand sells a very similar kit still, $2700

Harry

Stingxray

Thanks to straight man Jim Lockwood:

This design goes a step further and eliminates the Half-shaft's as a active suspension member. Hence the need for telescoping splined shafts. The C clips no longer anchor the wheel's camber angle . It has unlimited adjustablity. Better than the C-4 ...........IMO

[IMG][/IMG]

OldKarz

Very nice fabrication work!

Stingxray

Photo during development stages. Note that this design can be used with the Mono leaf spring or Coil overs If desired

rengawdor

Beautiful fabrication work!
Rod

Stingxray

Harry: I considered the Guldstrand System....... Even talked to Mr. Corvette," Dick Guldstrand himself ....He answers the phone at the shop when he's around. Great Man! ( I digress ............his set up requires considerable modification to the frame for the links to clear. So it's $2700 + labor

groovyjay

Hey, that's my frame and those are my pics! It really wasn't a bolt-on job...



I might add that your design is much superior to the guldstrand kit.

redvetracr

I don`t know what you consider "considerable" but butchering the frame in those pics above wasn`t necessary. I had an old SCCA GT-1 race car here with an original RPF 5-link ("RPF as in Bob Riley, Protofab and George Foltz the original designers and builders of what is now known as the Guldstrand 5-link) and it required no where near that amount of "butchery"...I sold the RPF 5-link and then sold the car to a guy who vintage races it with trailing arms...

Stingxray

Thanks for the Comp GroovyJay. I borrowed your photos from another forum to illustrate. The credit for my design should go to a fellow Italian brother, who did the CAD and development.

Redvetracr:

It's really an 8 link ................ 6 link is a name someone came up with as a stock system (Dragvette) w/ 2 additional links ad 2 trailing arms. 5 bar is a name for a Guldstrand/Riley and also a little the Greenwood & C4 suspension corner, 2 trailing links, a camber link a halfshaft and a toe link. The C4 & Greenwood ones use a rear toe link, the Riley/Guldstrand one uses 2 lower camber rods where the relative adjustment of these 2 set the toe.

redvetracr

my post makes no mention of the 6-link, I know exactly what it is (and more importantly) what it is not. what you may not know is that Bob Riley is the man who designed the C-4 rear suspension for GM and that the RPF/Guldstrand rear suspension is what it is because it was designed to be SCCA legal, more links would not have been legal. I also had a Greenwood 5-link, (brand new in the box) the major differences I saw was in the camber adjustment, one upper and one lower link opposed to the RPF that has two lower links. there weren`t many made but I think the ultimate rear suspension was the Greenwood double A-frame suspension he ran in IMSA, probably also designed by Bob Riley.

66since71

That is a lot of cutting on the frame.. I only mentioned his kit in response to the question someone asked about where to buy one. The workmanship on yours looks terrific.

Dick is a gem for the hobby. When I was actively autocrossing (70s and 80s), I used to trade notes with him. He answered every letter personally. Mostly just short notes, but every one was answered. I wound up buying a lot of chassis parts from him for 4 different cars.

Harry

JohnZ

We did the Viper rear suspension a little differently (and a little simpler) - aluminum upper and lower A-arms with telescoping splined half-shafts, rear toe link and sway bar; NHRA does NOT like half-shafts as suspension members - if you lose one, you crash.

Stingxray

Yep Johnny......your Viper and the C5 , C6 went to the double A arm rear's now. SRIII is offering that setup on the C2 & C3 frames too. But I'm going to keep the SWC stock frame. Fortunately the only Mod is welding 4 mount Tabs on the frame below the trailing arm pocket. It's been allot of work and finally seeing the light at the end of the tunnel.