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Re: Engineering 101

To: shop-talk@autox.team.net
Subject: Re: Engineering 101
From: Rush <jdrush@enter.net>
Date: Tue, 26 Jul 2005 03:14:43 -0400
Stay away from allthread rod. Most allthread rod is made to a very low 
standard and won't be up to moving 1000 lbs for long. Without more info, 
I cannot give you many more ideas, but have you looked at ball screws? 
They are designed from the get-go to haul heavy loads along the shaft 
axis and can be had for next to nothing you know where to look.

Mike Rambour wrote:
> What I need to figure out is how to make a 90degree turn and turn a 
> shaft with some gears.  I have a 1/2" shaft coming out of a I-beam that 
> goes into a frame about 4 inches, it needs to turn a threaded rod that 
> is at 90degrees to that shaft.  I have browsed and searched the net for 
> hours and hours, I have found some small gears that would do the job but 
> they are pot metal and the threaded shaft is going to be supporting 
> nearly a 1,000lbs, the shaft actually does not support the weight but it 
> will move the weight on casters in a "lipped channel"  so the small 
> gears I found being pot metal probably would not work.   It can even be 
> geared to make it easier to move if that can be found.
> 
> Next item on the list is the threaded shaft, I was going to use simple 
> all-thread but I found references to ACME threads and that sure sounds 
> like a Wiley Coyote disaster waiting to happen to me but they are 
> supposed to be better, are they ?






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