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Old Feb 21, 2012, 05:26 AM
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Mack Bulldog RC truck body


Make your own Lexan RC car or truck body? Why not. I got lucky at the plastics shop when they mis-picked some material a few years back: I got 18 sheets of .063" thick clear MAKROLON polycarb, and they didn't charge me for it. Since they couldn't use it, they gave it to me.


A bit tough to cut, but the results should be better than bulletproof. My Tamiya Blackfoot custom-chassis'd truck will have a big flatbed Mack AC Bulldog look, but be done up very modern. the body will be gloss black...I think. ?I just found some bright orange paint.
Orange Blossom Special?
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Old Feb 21, 2012, 05:52 AM
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Neat thing about Lexan...

"Unlike most thermoplastics, polycarbonate can undergo large plastic deformations without cracking or breaking. As a result, it can be processed and formed at room temperature using sheet metal techniques, such as forming bends on a brake. Even for sharp angle bends with a tight radius, no heating is generally necessary. "
From Wikipedia.

The stuff is not easy to bend with your hands. I need to get a sheet metal brake, and soon. My next toy.
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Old Feb 21, 2012, 06:18 AM
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More on the Tamiya MACK Truck


Ground clearance at the center of the frame is 3.66 inches. The body parts were mouse-sheened on the CNC (still learning this material), and bonded using Oatey Black ABS cement. A prior test showed excellent bonding, the cement soaks in and melts the parts together well.


The flatbed is large enough to carry a Tamiya Wild Willy2. A view from the underside shows the sub-frame of the body structure. The body and bed are all one part, and four #6 x 1/2" screws at each end hold it in place.


I have wanted to make a big, radio-controlled MACK AC Bulldog truck, forever. Tamiya's bullet-proof Blackfoot Xtreme provides a solid, not-too-pricey base, one that I know can take some abuse.

I'm installing a Traxxas/Novak 14.4V speed control, Haven't decided on cell count yet, that I'll play with.

Before I can do that, I need to draw up and make a radio box for this. I'd like to seal it up for puddle-jumps.

I just found the locked diff that I set up for one of the Wild Willy2's about four years ago (I'd written the date onto it with sharpie when I filled it with J-B-Weld).
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