need engineer to scca certify roll cage

[dajl]

I have Lola 342 1974. I never had SCCA logbook and want to get car homologated. SCCA said I need to have engineer sign off on roll cage for them to homologate car. Where can i find engineer to sign off in NYC-Western CT or Pocono PA area? thanks....

[D.T. Benner]

Your Engineer shoud have a Lawyer.

[Phil Creighton]

Actually the roll hoop on the T342 conforms to the original rule and is not an alternate structure from what I remember. I do remember having to replace dash hoops to make them correct from the old square tube and update the forward braces as the rules changed in the late 70's.

[Richard Learned]

If they are requesting an FEA I can get that for you. I would need info for the FEA. PM me if you would like to pursue, we would have some work to do.

The FEA and letter with registered engineer's stamp is a cost item.

Richard Learned

[ghickman]

Contact Billy Wight, he has recent experience doing this very such thing and his FEA skills are SUPERB. He has vast Formula car experience and is a member of this forum ....he can be reached at billy@luxonengineering.com.


Gary Hickman

[Rick Iverson]

Arnie;

I went through this sort of deal on a T-440 in 1991. Firstly, the original main hoop material was not of the required thickness; secondly, the bend radius was inconsistent with the GCR.

The GRC reads that an alternate design (stock in this case) can is approved if a certified ME can demonstrate the roll cage will support xGs in three directions. My ME did the comprehensive study (sixty pages worth), and I selectively forwarded favorable portions of the Autocad to Sven at SCCA Technical with my plea. Denied!!

The short of it: My ME said this car was not consistent with the minimum mandatory GCR requirements, and further recommended the chassis ONLY be used for Pine Wood Derby events.

I had a new rollbar made of CrMo, brazed it, forward supports installed and had a ball, but NEVER did I challenge anyone for a corner, and spent all my cockpit time living in my mirrors.

Iverson

[LJennings]

If you can wait a week or so, I have a copy of the original certification papers from Lola for the 342 series with Bob Marston's engineering stamp. I will look over the weekend or sometime next week. I have it packed away somewhere.

[Brian]

Y'all may be forgetting that the T342 had to meet the pre-1986 rules when it was originally being certified, which it may or may not have actually done. The thickness of the hoop material is a little dodgy. A T342 being homologated now has to meet the current rules in their entirety. Probably a new hoop, new braces, new forward dash hoop, new braces, etc.

Brian

[John LaRue]

Is it possible that the car was previously homologated and that the log book has been lost? If so, should you not be able to seek a replacement certificate and book?