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ut-robotics / picr21-team-bts

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30mm bolts most likely too short and not rigid #99

Open Akustav opened 2 years ago

Akustav commented 2 years ago

IT seems to me that these bolts are too short and will bend inside soft plastic:

image

I suggest to use spacers.

mbz4 commented 2 years ago

True but I dont think a 40mm M3 bolt even exists ._.

Akustav commented 2 years ago

Yeah, but there exists 40mm spacers that screw into the holes and don't apply all the force onto the hole. Spacers have a bottom that can rest on top of this component and the friction there transfers forces to the body of the component more evenly

mbz4 commented 2 years ago

I don't want to add them - its too much of a design change with ~20 mins left

Akustav commented 2 years ago

Additionally, what fixes the nuts into the plastic? Threads don't bite into the bolt, that is why nuts are also torqued down. Currently the bolts just would not hold the middle ramp in a stable fashion.