This page (revision-55) was last changed on 2024-05-30 22:30 by Murray Altheim

This page was created on 2021-03-29 18:18 by Murray Altheim

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55 2024-05-30 22:30 20 KB Murray Altheim to previous
54 2021-10-02 05:56 20 KB Murray Altheim to previous | to last
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52 2021-05-27 04:47 20 KB Murray Altheim to previous | to last
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Mars Rover
MarsRover

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At line 52 changed one line
One of the wheel options purchased from ServoCity is a [Round Baseplate|https://www.servocity.com/round-baseplate/], a 0.125" (3.175mm) thick aluminum disk with holes drilled in it in a pattern that allows it to be mounted directly to a motor shaft. At 3mm thick, it's likely strong enough to form the end plate of a Mars rover-style wheel. The cylinder could be made from a durable plastic or aluminum tube, with an outer later of rubber or even OSEPP tank treads (see below). How the cylinder would be attached to the base plate remains to be seen, but this is part of the experiment.
One of the wheel options purchased from ServoCity is a [Round Baseplate|https://www.servocity.com/round-baseplate/], a 0.125" (3.175mm) thick aluminum disk with holes drilled in it in a pattern that allows it to be mounted directly to a motor shaft. At 3mm thick, it's likely strong enough to form the end plate of a Mars rover-style wheel. The cylinder could be made from a durable plastic, aluminum or stainless steel tube, with an outer later of rubber or even OSEPP tank treads (see below). How the cylinder would be attached to the base plate remains to be seen, but this is part of the experiment.
At line 54 changed one line
I've got a lot of extra OSEPP tank treads since I didn't use any of them in my KR01 robot, which was based on an OSEPP Tank Robot kit. And because a number of the tread pieces had torn or weren't molded correctly, OSEPP had sent me an extra set of treads. As you can see in the photo, the silicon tires fit onto the red aluminum wheels, but it's also possible to wrap the wheel in the treads pieces since the wheels were (when part of the Tank kit) meant to hold the tank treads. I got lucky that the number of tread pieces just fits onto the wheel. Similarly, if I can find a suitable piece of possibly 4" tube it might be possible to wrap three rows of treads around it, which would give me a 90mm wide wheel with a diameter of around 120mm. If I ended up with wheels that large I might consider using a higher gear ratio, slower motor.
I've got a lot of extra OSEPP tank treads since I didn't use any of them in my KR01 robot, which was based on an OSEPP Tank Robot kit. And because a number of the tread pieces had torn or weren't molded correctly, OSEPP had sent me an extra set of treads. As you can see in the photo, the silicon tires fit onto the red aluminum wheels, but it's also possible to wrap the wheel in the treads pieces since the wheels were (when part of the Tank kit) meant to hold the tank treads. I got lucky that the number of tread pieces just fits onto the wheel.
At line 56 added one line
Similarly, if I can find a suitable piece of possibly 4" tube it might be possible to wrap three rows of treads around it, with each tread being 30mm wide this would give me a 90mm wide wheel with a diameter of around 120mm. That's enough to tuck my motors inside the wheels, as in the Mars rovers. If I ended up with wheels that large I might consider using a higher gear ratio, slower motor. Five inch wheels is bigger than I'd imagined. There's clearly some experimenting to do if I decide not to use a commercial (e.g., robot or off-road hobby car) wheel.
At line 58 added one line
This page (revision-55) was last changed on 2024-05-30 22:30 by Murray AltheimTop