Well, I make knives too, but that is just a hobby, I make full custom Traditional bows, and am one of only two people in the world that make them out of antler, I've been at it 5 years and have bows on every continent now....
And about our Maxx, I bought it used and it already had a .21 on it, but i've had to replace or make each and every piece since then, it has an aluminium chassis that was made from a piece of a real am gen. hummer that I got when we went to visit my son at Ft. Hood, a handmade full roll cage, still has a .21 but it's been tweaked a bit, and I love the three speed tranny, one of the best things I ever did to it, and it's been flawless in performance, not one problem with it ever, i do run the stock front axles for a weak link, but I've never had to replace them due to mishap, just wore a few out is all, it also has a spool in the rear with mips, and never had a problem there either, when I started rebuilding this , it was not just for speed but for the battle of atrition too, as the faster it went the easier it was to break, thus the reason for the full cage, I hit a shopping cart while we were in Killeen(Ft. Hood), at almost full speed, the cart went up about 6' and flew about 15', and I drove the maxx back to me, but the first 6061 chassis that I built was toast, that's when I got the piece from the hummer and made a new chassis..........I raced it a few times, and did very well, but I like "bashing" more than racing, and right now there aren't any tracks to race on around here, except for the one I just built here, but it's a bit small for nitro, so that track is next on the list, I have plenty of room, no neighbors to cry and complain either....... and as far as the name of that old RC... I don't remember, it wasn't my favorite by far, but it was a nice looking POS..............seemed like it was always broke.......
Here's a pic, Maxx on the right, Savage on the left...My son built the savage, but the maxx is much faster, and way more durable.....