Model of my RSR reinforcements

[Tyson Schmidt]

1" wide, 9" long, and 1/8th thick strap.



Diagonal piece custom cut, 1/8th thick.




From the back side, standing where the rear seats would be, looking through where the firewall should be.



Triangulating the lower forward meeting point of the shock tower and longitudinal.



A group shot for perspective:

[Tyson Schmidt]

Here are the templates laid out to give you an idea of scale:




Sorry about the poor shots.

In addition, I seam weld the perimter of the shok tower to chassis longitudinal wherever the factory skipped, or merely spot-welded.

If it's for coil-overs, I'll add in a few extras, like a vertical strap transversely between the shock towers, and additional triangles in the typical spots at each end in along with the diagonals in the pic.

[Tyson Schmidt]

Note: The templates are a guide, and the actual metal pieces end up being slightly larger than the template, allowing me to custom fit the piece to the car. This is why the fit seems poor on the diagonal piece.

[randywebb]

Interesting! -- is this what P AG did? Or something in addition?

Think this would be something one could feel & appreciate on a street car?

[rsrfan]

I'll say it first. Thank you for all the help and insight you give to the "lesser evil" ones like me out there. Much appreciated.

JP

[Tyson Schmidt]

PAG never did the diagonal. That piece they did transversely for maximum rigidity for the shock tower. I made mine for maximum torsional rigidity on a non coil-over car.

The factory style transverse piece can be added on in addition to what I showed above, and it's exactly what I do on coil-over cars.

For maximum effectiveness, it would be ideal to make the mounting feet for the rollbar/rollcage meet right up against the firewall where my reinforcements also meet the firewall. This ties it all together for a very stiff chassis. That's what I did on Scruffy, resulting in coupe-like stiffness in a cabriolet.

To answer your question, I think yes, you would notice a difference on a street car if it's got upgraded suspension.

[Jeff Alton]

I see the torsion tube cut out. IF running coilovers is it a good or bad idea to cut it out when adding the additional peices?

Thanks

[dean]

Hey Tyson,

Thanks for that nice post. Great info. I have a suggestion for you. Cereal boxes make great templates.

Dean

[Tyson Schmidt]

Originally posted by catca
I see the torsion tube cut out. IF running coilovers is it a good or bad idea to cut it out when adding the additional peices?

Thanks

This chassis is a lost cause. I only used to illustrate the pieces because it's so cut up.

It was used for a T.V. shoot where they torched the car. Desperate Housewives used my C2 for a shot, and this car was it's stand-in, and got propane piped into it, turning it into a huge fireball.

[Tyson Schmidt]

Originally posted by rsrfan
I'll say it first. Thank you for all the help and insight you give to the "lesser evil" ones like me out there. Much appreciated.

JP

Thank you! I'm happy to do it if it helps someone make their car stronger/safer/faster.

[Jim Richards]

Or more evil?

Thanks Tyson! Excellent thread.

[Porsche Doc]

Hey Tyson,
Here is how we do it!

[Tyson Schmidt]

Nice!

Yeah, it can get pretty serious on a racecar. This stuff I posted is for street/track cars. The kind of stuff you'd do to a car while you have the engine/trans out, but want to make things stronger for track days.

That transverse strip you ran between the shock towers is exactly what I do on coil-over cars, except usually just with strap laid vertically.

[Porsche Doc]

Hey Man,
On the pic below. Make the gusset go strait out other than angle it. That way it will take the loading better.
I realy like the gusset at the bottom of the frame. Good Idea Man !
But I like to over do things some times. Its my Mechanical Engineering coming out in me.
It looks good thou Man! Great job dude!

[randywebb]

Ummmm, Tyson did you get to - ah - how shall I put this - help any of the Desperate Housewives relax....

(note how I artfully avoided any mention of stiffening members in the chassis...)

[Shuie]

Thanks for sharing!

This is one of those mods thats not documented enough

[mjshira]

it is nice to see what went into Scruffy. people freak when they feel how tight the car is.

[donstevens]

Cool Stuff,

Thanks.

[911SCfanatic]

More, please.

[}{arlequin]

Originally posted by randywebb
Ummmm, Tyson did you get to - ah - how shall I put this - help any of the Desperate Housewives relax....

(note how I artfully avoided any mention of stiffening members in the chassis...)

properly gusseted, this kind of chassis can take quite a pounding


great post tyson. for the archives.