tech/safety questions

[chicane67]

I dont take that way... its all good.

Now, most of what I did post... is right out of the rule books. It doesnt fully support what I do think and believe to be true... just like your point on tubing thinner than 0.095". Out of experience there is romm to move in certain directions, specifically when dealing with rollcage design and materials. When you get into full tube chassis... the world is a little different. I too have mucho experience in the full tube world... and we MIGed 4130... but just like you said, an experienced MIG welder is the key.



I started way... way... back in '90 building class 7 and class 10 unlimited chassis and LT "water pumpers" before they became the norm. I then went into the road race world in the ranks of SCCA... and then into SCORE Trophy Truck and Pro Truck world... and it all shares pretty much the same views. So yeah, I agree with what you said... I just dont steer 'first timers' into the more difficult direction up front.

I actually use various diameters and wall thickness' throughout the chassis. For main hoops I like 0.120" and everything else you hang off of it can be whatever. Some attributes just dont need to be 0.120" or 0.065" for that matter.... the design and its execution when fabricated has more to do with it than whats on the surface in this thread.

[josht]

With all that has been posted, I don't think that the guy doing my body work has enoughf experience welding cages. He does great body work but was not familiar with the differences between DOM & chrom-moly.

The best thing would be to send the car out for a cage....

Any recommendations for places in Nassau County, New York?

Thanks

[jason@gmachine]

With all that has been posted, I don't think that the guy doing my body work has enoughf experience welding cages. He does great body work but was not familiar with the differences between DOM & chrom-moly.

The best thing would be to send the car out for a cage....

Any recommendations for places in Nassau County, New York?

Thanks

Never get a car caged by a body shop, muffler shop, or even a performance shop. Only take cage work to race fabrication shops that build them on daily basis. If a builder does not know the difference between DOM and 4130 then they should not even be welding on sub-frame connectors. That is actually scary that a welder does not know the difference. Anyways,

I don’t know any shops off the top of my head but if you find some post up their names and websites/ photos of their work. I will take a look at the work from a fabricators POV and give my opinion.

Jason

[josht]

Well I talked to the bodyguy. He is going to contact some people that race at Englishtown to see who built there cages. He does have a Tig welder but said he does not do it often enoughf to consider welding a chrom-moly cage.

[jason@gmachine]

awsome, please keep us posted on what your findings are.


Jason

[jason@gmachine]

I dont take that way... its all good.

Now, most of what I did post... is right out of the rule books. It doesnt fully support what I do think and believe to be true... just like your point on tubing thinner than 0.095". Out of experience there is romm to move in certain directions, specifically when dealing with rollcage design and materials. When you get into full tube chassis... the world is a little different. I too have mucho experience in the full tube world... and we MIGed 4130... but just like you said, an experienced MIG welder is the key.

I started way... way... back in '90 building class 7 and class 10 unlimited chassis and LT "water pumpers" before they became the norm. I then went into the road race world in the ranks of SCCA... and then into SCORE Trophy Truck and Pro Truck world... and it all shares pretty much the same views. So yeah, I agree with what you said... I just dont steer 'first timers' into the more difficult direction up front.

I actually use various diameters and wall thickness' throughout the chassis. For main hoops I like 0.120" and everything else you hang off of it can be whatever. Some attributes just dont need to be 0.120" or 0.065" for that matter.... the design and its execution when fabricated has more to do with it than whats on the surface in this thread.

Good points. I love off-road but my partner is really into the whole pro-touring thing and road racing. Right now we have the CSULB SAE team Baja chassis in out shop because I’m donating my time to show them how to weld it up and offer our welders as well. Because I’m not a student I can’t touch the chassis but I stand there with them and give them pointers as they go. It's made of .058 wall 4130. Really thin stuff but the entire chassis with engine and driver is only like 500 lbs. It’s a neat little project they have going.


Jason