[mitchntx]

Ledfoot2 dropped his TA with us Thursday evening. He will be racing with us next year.

Sunday morning now and he is on his way to pick up the car.

It's a basic 6 point CMC cage wit an "X" in the back, NASCAR style driver side door bars, an 'X' on the passenger side with a kick out for added room and bracing from the A-Pillar forward to the firewall.

Been taking a few pics along the way and will get them up shortly.

Very pleased with the quick turn-around.

[mitchntx]

Oh ... did I mention it was 103* in the shop Saturday afternoon? (IMG:http://www.frrax.com/rrforum/style_emoticons/default/huh.gif)

[Shortcutsleeping]

In the second picture on the right side (passenger) it looks like there are several plates welded in behind where the tube there meets the chassis. Are those to add something later?

Nice work!

Costas
cars and such...

[mitchntx]

In the second picture on the right side (passenger) it looks like there are several plates welded in behind where the tube there meets the chassis. Are those to add something later?

Nice work!

Costas
cars and such...

Thanks ... we appreciate the kind words.

We land the rear down bars right above the spring seats, where the weight of the car is supported. The floor/chassis has a very small foorprint in this area on that side as the floor "rolls" away from the flat section.

We just felt that the floor plate was too small in the area to land 2 tubes (we don't like landing a tube on a tube, unless absolutely necessary). We also use as much of the allowed 100 in/sq mounting plate as possible.

I have a template made from cardboard for the overall size and then cut 2 "slots" in the plate in order to "roll" the mounting plate over the curvature of the floor. We then seam weld the plates to each other and the floor.

Does it add anything? At the very least some peace of mind ...

We also added a small bend in the passenger side "X" to give a passenger more room. It moves the intersect point of the "X" out about 6". What's your thoughts on this? We toyed with the idea of welding some gussets in there, but ran out of time. It's an easy addition later.

Edit:
We also cut and sent enough tube home with rayman to add A-Pillar supports if he decides to add them at a later date. He and I displace a significant amount of air and I have a difficult time getting in and out of a car with those supports installed. He had similar concerns.

[Shortcutsleeping]

We just felt that the floor plate was too small in the area to land 2 tubes (we don't like landing a tube on a tube, unless absolutely necessary). We also use as much of the allowed 100 in/sq mounting plate as possible.
I have a template made from cardboard for the overall size and then cut 2 "slots" in the plate in order to "roll" the mounting plate over the curvature of the floor. We then seam weld the plates to each other and the floor.
Does it add anything? At the very least some peace of mind ...

Makes sense! That same pad (right rear) just looks (likely from the camera angle) more than 100 sq inches. But I agree with you completely, always use the most pad you can get away with. Any reason you go with several pads and not just one pad?

We also added a small bend in the passenger side "X" to give a passenger more room. It moves the intersect point of the "X" out about 6". What's your thoughts on this? We toyed with the idea of welding some gussets in there, but ran out of time. It's an easy addition later.

I think it is smart for sure. I can't think of anytime that you would ever NOT want to push the cage on both sides all the way out to the inside edge of the door skin. In a side impact you've got more crushable structure further out and that makes good sense to me. Does the passenger door still have the doorbar or was it removed? As far as gussets, add them when you can. We did some rallying for several years and looking at those cages and talking to the crews was a real education as nearly all the top teams had honestly 'field tested' their cages many times. Their stories of what failed and when/how (sometimes with pics!) and why they led to the xxxx upgrade were very interesting.

Good work is damn hard to find, and good work FAST is nearly impossible! If we weren't doing our LeMons car cage ourselves, I'd be shipping that damn car up to you pronto!!

Costas
cars and such...

[mitchntx]

Makes sense! That same pad (right rear) just looks (likely from the camera angle) more than 100 sq inches. But I agree with you completely, always use the most pad you can get away with. Any reason you go with several pads and not just one pad?


Costas
cars and such...

It's close, but under the 100 in/sq.

The plate begins life as a single piece, I just cut slots to help easily bend it because of the gentle curvature in this region. We have no real elegant way of shapping the curve without it appearing beaten to death. Also, the seam weld, which includes integrating the floor pan, prevents a "drum" effect.

On big surface areas, we cutl ~3/4" holes and rose bud weld the plate. Thanks Alan.
We've learned a lot from Alan Blaine. I'm sure he is sick to death of my continuos stream of questions.