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MoonSet416
Joined: 25 Sep 2016
Posts: 436
Location: Sydney
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Update:
As I wasn't able to compete at the recent FMB event, I have done a few weapon tests. And I have had some problems with the weapon system on Contraption.
The first test was done a while back and it was just a regular spin up and spin down thing. The weapon was fairly quick to spin up thanks to the dual motors, but problem occurred when I decided it's time to spin down and end the test. As soon as I pulled the stick down the belts came off the pulleys and flopped around. Luckily aside from the belts getting slightly damaged by rubbing against the spinner, no further damage was sustained.
After that test I thought that the problem was caused by me forgetting to turn off the brakes of the weapon ESCs, so as soon as I pulled the stick down the brakes were engaged and the sudden deceleration might have destabilized the belts. So I turned the brakes off while the ESCs were attached to a Y-splitter.
Just now I did a second test. The weapon spun up just fine, and after it was at full speed I tried hitting a piece of wood. and then I spun down. After this test I found that the left side belt was off again, but the other belt seemed fine. See pic below.
So I'm trying to figure out what happened, and I have a few guesses. First, when I programmed the ESCs, I actually just turned the brakes off on one of the ESCs due to the Y-splitter. (electronics is still a big puzzle for me) Second, the idlers, which are now just ball bearings, are too narrow for the belt (belts are about 10mm wide but the bearings are only 6mm). As a result, if the belt is slightly off to one side, the tension in the belt will let it slip off to that side even further.
Which one do you guys think is more likely? Or did I miss something?
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Sat Feb 10, 2018 10:21 pm |
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