BORIS 6x6x6 Bullhead/Clodbuster project
Posted: Sat Dec 21, 2013 6:23 pm
I'm not normally one to post projects or progress shots, as I tend to get projects put together pretty quickly. This one is definitely different. I've wanted to make a 6x6x6 Clod/Bullhead for years. I happened to have 3 complete Clod gearboxes in my stash, then I happened upon a Sassy Chassis (as I later found out, an unauthorized Sassy Chassis knockoff) on eBay and the project began. First the chassis, this is a very nice chassis, although I don't think it's a genuine Sassy. The aluminum is slightly thicker than any Sassy Clod chassis I've owned, but for a project like this I didn't mind it being a knock-off, as the beefier aluminum is a good thing. I decided to four link the whole thing, and put 4 Associated shocks on each axle. I'm still deciding on motors, it will either be 3 Tamiya Sport Tuned motors or 3 silver cans. Nothing too crazy, I'm not looking to make a land missile with this one, although gearing will be taller than stock to give it some go. All three axles have Tactic HD/MG servos. I also have a PDI Turbo Zeta that I want to use in this, as they are kind of the ultimate old school Clod upgrade. Plus, I can run two six cell packs no problem. Eventually I plan to have extra bells and whistles on this thing, working lights, maybe a horn, who knows. It's going to be controlled by an 8 channel Airtronics surface radio, so I kind of want to go crazy using up those channels with cool stuff. I'm still debating on what to do with the rear of the truck. I'm definitely going to use the Bullhead body up front, but I'm not sure what to do with the rear. Leave it plain, make a roll back flat bed, make it into a semi-wrecker. Right now I'm leaning towards a roll-back as I think it would look cool and also be a fun way to play around with it and my other r/c cars and trucks.
I've decided to name it BORIS. Since it's based on a Tamiya Bullhead and Bullhead is the name of one of my favorite albums from one of my favorite bands (Melvins), and Boris is the opening track to that album. A song so good that another band named themselves after it. It's a massive song, this is a massive truck.
How I plan to lay out the electronics. Mmmm... Turbo Zeta.
Mattzilla bumper/servo mounts front and rear.
I found the trickiest part of a truck like this is figuring out the center axle's steering. Even with stock length suspension arms, the front (or back) of the axle nearly scrapes the 3 axle's chassis mount. Putting another bumper/servo mount there was not an option. I might have been able to put a servo in the center of the front suspension mount of the lower chassis and run a rod like on the stock truck, but I was worried about the arm hitting the chassis when the suspension was fully compressed. Once I got the axle on, I realized that wasn't going to be a concern because there was ZERO room out front for anything, the clearance is about 1/16 of an inch. I want 4 shocks on each axle, so that makes conventional behind the axle servo set ups out of the question. So, I made a mount out of two pieces of angle aluminum and some plastic servo mounts. It attaches to two of the screws that connect the axle tube to the gear case. It requires major surgery to mount, but the servo is nicely tucked behind the motor and out of the way of the shocks and suspension links. I haven't hooked up the connecting link and servo saver yet, but I'm confident that this will work nicely. I wish I had gotten a better shot of it before I mounted it and buried it behind all the other parts. Oh well.
I've decided to name it BORIS. Since it's based on a Tamiya Bullhead and Bullhead is the name of one of my favorite albums from one of my favorite bands (Melvins), and Boris is the opening track to that album. A song so good that another band named themselves after it. It's a massive song, this is a massive truck.

How I plan to lay out the electronics. Mmmm... Turbo Zeta.

Mattzilla bumper/servo mounts front and rear.
I found the trickiest part of a truck like this is figuring out the center axle's steering. Even with stock length suspension arms, the front (or back) of the axle nearly scrapes the 3 axle's chassis mount. Putting another bumper/servo mount there was not an option. I might have been able to put a servo in the center of the front suspension mount of the lower chassis and run a rod like on the stock truck, but I was worried about the arm hitting the chassis when the suspension was fully compressed. Once I got the axle on, I realized that wasn't going to be a concern because there was ZERO room out front for anything, the clearance is about 1/16 of an inch. I want 4 shocks on each axle, so that makes conventional behind the axle servo set ups out of the question. So, I made a mount out of two pieces of angle aluminum and some plastic servo mounts. It attaches to two of the screws that connect the axle tube to the gear case. It requires major surgery to mount, but the servo is nicely tucked behind the motor and out of the way of the shocks and suspension links. I haven't hooked up the connecting link and servo saver yet, but I'm confident that this will work nicely. I wish I had gotten a better shot of it before I mounted it and buried it behind all the other parts. Oh well.