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Unread 27-07-2006, 13:48
sanddrag sanddrag is offline
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Re: pic: what is cooking

Quote:
Originally Posted by Hachiban VIII
Why not spare your machinist a tremendous amount of trouble and cut all those holes yourself with a hand drill?
Are you joking? It would take way more effort to hand drill a bunch of round holes than to throw the drawing in a CAM program and throw a plate in a CNC. I like it hoe it is and it the plates appear to be sufficiently strong (might be worried about the later stage gears though).
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Unread 27-07-2006, 20:58
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Re: pic: what is cooking

Thanks to ASRC Aerospace we can get this cut out on the wire edm that they have, either that or the water jet.... The machining ability that we have gained is amazing! I have looked over some of the stress factors and I think it should work because it is ¼” thick plate for the sidewalls. I would like to commend Jeffery on his skills considering he is only in 8th grade but has mastered inventor and has the ability to think in a mechanical nature will be a great asset to the team.
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Unread 27-07-2006, 22:33
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Re: pic: what is cooking

Quote:
Originally Posted by Nitroxextreme
I agree with the torque concerns...

But how can you test something like that...
There are lots of different CAE / FEA type packages to do the testing. Of course, you could also do it old-school. Do it by hand. I don't do this very often, but... I'd check the hub, the spokes, and the teeth in different calulations. Have to estimate the forces - remember that start and stop are very much higher than forces during drive.

I know there are people out here that would do a much better job of explaining this than I would, but rest assured, you can do a good job by hand calcs. One of those things you learn in school.
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