RC Details

1:10 size, 1:1 performance

Tamiya M1025 Hummer Brush guard.

On a rainy Sunday here in Toronto, I thought what better a day to make something unique for my Hummer…like a brush guard. I had one of these trucks in the past when they were new and remember it being a really fun drive. I sold it to get a bike or something and I always regretted it. My friend had one that he was willing to part with. New, built, never driven but needed some love.

Now that electronic technologies have caught up to the times, I upgraded them from the old mechanical speed controller to a more modern electric ESC setup, (still from 2008 but better) and a Horizon 2 channel receiver. It also needed to have the rubber seals and oil installed in the shocks. I gutted the whole car and rebuilt it with fresh grease. I ordered up some new tires through John’s Hobbies, they were able to get new stock tires from Tamiya to replace the original hardened tires. SCORE! Now it’s driving like new once again and time to make it look the part a little more than just a solid colour.

The starting point.

The starting point.

My process for the brush guard began by measuring the details of the front of the truck to make sure I didn’t inadvertently cover the headlights or get the spacing in the grill wrong. I used the openings in the grill as attachment points. I made little caps for the back that would sandwich the parts to the body with a 2.5mm x 10mm screw. There is a spot for two but I only used one, seemed strong enough.

The caps that hold on the brush guard.

The caps that hold on the brush guard.

This picture shows the CAD. I use Rhino3D to do my modelling. You can see there is small blocks under the bottom of the main supports. This is the support material so they print well. I find that sometimes it is easier to make your own. They don’t touch and will come off right away after printing. They only hold up the first layer of the overhang so the rest of it prints well. I left about 0.3 mm space in between them and the under surface. The space after printing fits the lower portion of the body that has the D rings in it. This sticks out a few millimetres.

The CAD work

The CAD work

Here it is printing. You can see the internal support structure. I gave it 3 shells and 50% infill. This makes it strong yet a little flexible. I printed it in black ABS so if it gets bashed up it will always look good.

Mid print of the brush guard.

Mid print of the brush guard.

While the printer did it’s thing, I painted up my lights and various details like the straps that hold down the hood, gas cap and mirrors. With the brush guard installed, the painted details really come to life and are now protected! Mission accomplished!!

The brush guard installed and the lights painted.

The brush guard installed and the lights painted.

Once again, this truck is so much fun to drive. It won’t win any scale comps (it is 1/12 actually) but what lacks in true 1/10 scale presence it makes up for in drivability. It is however a true to life reproduction at 1/12 scale. It regularly makes raids in the trails in my local ravine and always brings great fan fair.

Want one for your truck? Contact me here. I am planning on making them in 3D printed steel.