Allen,
Brazing...ok for bicycles, not cars. The only brazed chassis' I have seen, had a
lot of joints to distribute the load and were designed by engineers!!! Do your
self a favor...buy a tig machine and take welding lessions, then you can do it
for
life. Or tack up your chassis and have a pro weld it. Personnally, I hate mig
because I have seen too many bad welds. A good looking tig weld is usually good,
but a good looking mig weld may still not be penatrated deep enough. Too many
people have bought a mig designed to attach body panels, then tried to weld a
chassis. Mig welds are very hard and fractures can happen!!!
As for as notching machines, I sell a nice model from Tubular Dynamics but I
don't
use them in my shop. I notch all of my tubing on a 2" wide belt Baldor belt
sander. It has a rubber wheel on the bottom and I can fish mouth the tube in
seconds. The machine cost about $700 today but you will use it for everything.
It
is absolutely the most used piece of equipment I own. Everybody who has seen it
in
use, has marveled at the job it does. Investing is quality equipment is not
cheap
but if you intend on building your own cars, it will really pays off in the end.
As far as the square/rectangular chassis design goes, I prefer round but
building
chassis' is what I do for a living and I'm from the "cars don't have to be
tanks"
school.
Good luck with your project, keep the list informed on your progress.
joe
Allen Young wrote:
> All on the list: WOW!! Thanks a ton to all who replied to my call for help
> on lakester frame design and fabrication techniques. I had wondered about
> square tubing and know it would be a whole lot easier to work with than round
> tubing. I havn't bought my material yet and am glad I didn't. I like the
> idea of the 2X4 in. bottom rail and the 2X2 in. top rail. Glen, do you know
> what size square tubing Mike Cook used for the cross members? I am about
> ready to buy a cut off saw, and can hold off on some kind of notcher/tube saw
> attachment if I go with the square tubing.
>
> I don't see anything in the rule book that addresses the frame itself.
> Nothing that I can see that precludes using square tubing. I'm not planning
> to go super fast -- 200 would be a lifetime goal for me. I've read about
> brazing being used to build race frames (which surprised me) and I may explore
> this as well. Brazing looks soo nice.
>
> To Chris Harris: my computer won't let me open your email I think because of
> the attachment. Say's it may be a virus?? What were you trying to send me?
>
> Again, you folks are the best. I'm sure I'll have more questions as I
> progress down this road. It sure feels good to know that you are there.
>
> Allen in Oroville Ca
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