Some of you will remember the monster MTB I found a few months ago:
As promised, I have been slowly working on turning the ugly monster into, well, this:
I wound up using only the wheels from the turfboard, but they kind of reminded me of the bigfoot truck from the movie, hence the name and theme.
As you can see, one swing-arm on each end has a crude but sturdy motor mount I made from bent steel sheets I got from the scrap bin at work. I should even have space for idlers if I use 60-66 toothed pulleys.
The wheels have four bolts so I had to print adaptors from nylon to attach the pulleys:
Since the truck bases are hollow I can use them to hold the vescs, maybe even turn them into giant heat-sinks:
There is still a lot to do- motors and vescs arrived today, but I’m still waiting for the pulleys and a bunch of other stuff. I’m also debating drilling another set of holes to bring the trucks closer together. Even with the jetspud, right now the wheelbase is about 44 inches.
To be continued!
P.S. If anyone finds a good stl file of the Doof-warrior, please hook me up! I so want to put him on the front of this but the only file I could find costs $120 to download!
The 29" jetspud I had planned on using was too long and made for a total wheelbase length of 44". This would defeat the purpose of the trucks, making tight turns and carving difficult.
So I used a drop down deck I had from my earlier build and cut the ends off, measured carefully and drilled new mounting holes using a 3d printed jig. As before I also added three larger holes for the M8 threaded inserts for the swing-trucks. The new wheelbase length is 34", much better for what I have in mind.
As I’d hoped, there’s plenty of space inside the body of the trucks for a vesc (wrapped in foam rubber and anti-vibration silicone pads). Since taking this apart every timeto change settings would be a pain I ran USB extensions outside along with the power and receiver lines. The yellow plate had holes drilled in it for the motor cables and also has a bit of concave so it’ll mount as stable as possible.
The housing for the DAVEga module is mounted. There’s enough space between it and the motor so they won’t crash into each other in a turn.
And here’s the enclosure nearly done! 10s4p battery and just enough space left over for a loopkey, charging port and receiver.
Hopefully this should be ready in another week or so. Maybe by then it’ll have dried up a bit outside and I can do a test ride.
To be continued!
