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 Shaft for Drum

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saylor23



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PostSubject: Shaft for Drum   Fri Feb 17, 2012 6:44 am

What do most people use forr a weapon shaft? 15lb bot, weapon around 3.5lbs. Is 1/2 in rod Titanium enough?
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YostAdvisor



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Registration date : 2011-10-12

PostSubject: Re: Shaft for Drum   Fri Feb 17, 2012 12:20 pm

My students and I have discussed the use of titanium shafts over the last two years. We bent two .5" unhardened titanium shaft two years ago and have since switched to A2 Tool steel hardened to 45 rockwell which seems to work great.
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Alex P. HASD Bots
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PostSubject: Re: Shaft for Drum   Mon Feb 27, 2012 3:14 pm

we use .5" titanium grade 5 shaft and as long it is supported well we have had no trouble.
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Koolaid64
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PostSubject: Re: Shaft for Drum   Tue Feb 28, 2012 7:17 pm

its all about how you support it. you really want to have the bearings as close to the frame as possible because where ever your weapon ends is where the most force is going to be applied. if the distance from you weapon to your frame support is less then the diameter then it becomes a matter of shear force rather then yield strength.

-Kyle
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Frisco
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PostSubject: Re: Shaft for Drum   Fri Mar 09, 2012 6:55 pm

Why pay for titanium or S7 when you can get a hardened shaft from McMaster for Less than 20 Bucks. You can order a case hardened shaft at the exact Length you need. 1/2 inch is plenty.

Frisco
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rjw
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PostSubject: Re: Shaft for Drum   Mon Mar 12, 2012 4:54 am

Frisco wrote:
Why pay for titanium or S7 when you can get a hardened shaft from McMaster for Less than 20 Bucks. You can order a case hardened shaft at the exact Length you need. 1/2 inch is plenty.

Frisco



Case hardened shafts are soft....(under the case ) you really want a shaft that is hard all the way thru

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jtm94
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PostSubject: Re: Shaft for Drum   Mon Mar 12, 2012 11:23 pm

Pfttt, case hardened is enough. People get away with much less.
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