Ralt RT4, RT5

[dereklola]

The front wings on these cars are supported by a 1" diam steel tube anchored to the front of the tub and sticking out both sides.

Can someone please tell me what the wall thickness is? Is the material mild steel or 4130?

Thanks - Derek

[formulasuper]

Mine measures .050" & I'm guessing 4130 considering how thin it is.

[dereklola]

Is that all - .050"?
Have you bent many?

[RussMcB]

Might be good if it wasn't too strong and easily bent. The bar is easier to replace than an aluminum nose box.

[dereklola]

Russ - good point!

[bobmic]

I made a few spares because I figured they were a consumables...

[FA Champ]

Any one have extra castings that bolt to the Mk-9 and support the upper rear rocker

mount and the rear sway bar ??

Art Jahn 608-617-3793 or artjahn@frontier.com

[Charles Warner]

Derek,

I've seen everything from .875" to 1.250", depending on who made the blocks/wings and what the application was (road course versus oval). All have been mild IIRC.

Art, that piece is not a casting. Just flat alloy plate. I have one for the FT application you are welcome to copy and transfer your own mounting holes if it comes to that. I would think someone has a spare laying around.

[formulasuper]

Is that all - .050"?
Have you bent many?

Oh, maybe one or two!

[kea]

The welding jig we have is for 1" OD tubing.
I remember using DOM

[formulasuper]

Might be good if it wasn't too strong and easily bent. The bar is easier to replace than an aluminum nose box.

And a lot easier to fabricate. (they don't sell this stuff anymore).

[Charles Warner]

And a lot easier to fabricate. (they don't sell this stuff anymore).

Who doesn't? I have nose boxes.

[formulasuper]

Who doesn't? I have nose boxes.

That's good to know. Also not really that difficult to fabricate one but a little bit more so than the straight wing tube. I've got a jig for that also.