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Hi Guys,

Just looking for opinions on types of metals to produce a scaled chassis and roll cage. I was thinking copper for its ease of soldering as a form of joining but it could be too ductile for a rigid body. Any advice?

Thanks
 

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Hi Guys,

Just looking for opinions on types of metals to produce a scaled chassis and roll cage. I was thinking copper for its ease of soldering as a form of joining but it could be too ductile for a rigid body. Any advice?

Thanks
The general material of choice here is Bundy Tube, which is used to make brake lines on cars. Its pretty easy to come by from places like Pertek, ABS Brakes etc and costs about $6 per meter. From there the next best option is Stainless tube, this can come in lots of grades costing anywhere from about $4 a meter to 12+ some specialty tube places will carry it as well as stainless balistrading and handrail suppliers. 3.75mm or 3/16th of an inch tubing is what you will most likely want.

Both these tubes can be brazed using a MIP torch like http://www.bernzomatic.com/item.html?id=21 using these and some low melt point braze like 5% silver braze will so the trick. The bernzomatic is about $120 and the braze rod is dear as poison, 250g is about $50. http://www.ebay.com.au/itm/1-4-KG-5...ApplianceAccessoriesParts&hash=item4d056148c4 and you will need 3 rods to complete a chassis, 250g is about 20 rods.

http://www.brakehose.com.au/shop.php
 

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Brazing is the most common method I think.
 
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