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Re: Gearbox Design

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Posted By<" ">Randy Kimball on October 06, 2002 at 12:15:09:

In Reply to: Gearbox Design posted byMark Donnelly on October 06, 2002 at 04:39:56:

Mark?
That is a 100 HP motor with a 9-1 gear ratio?

Be sure to supply ample dia. shafts.!!
I'd go with either the 15-5SS or 4140HT if it were me.
... geeeze ... be careful, a slight % error is
going to result in a large difference in forces.

Note: 15-5ss has a wonderful ability to take flex
and twist and hang in there, grain is important to
consider, but in a round bar the grain will be
linier as you want it to be. .... geeeze ...

I've never designed a torque shaft so big and
with such forces, I hope someone else has and will
support or correct my suggestion. Please do not
design these shafts on my suggestion alone for
this reason. ...

Follow Ups

Subject: Re: Re: Gearbox Design

Comments:: Mark? : That is a 100 HP motor with a 9-1 gear ratio? : Be sure to supply ample dia. shafts.!! : I'd go with either the 15-5SS or 4140HT if it were me. : ... geeeze ... be careful, a slight % error is : going to result in a large difference in forces. : Note: 15-5ss has a wonderful ability to take flex : and twist and hang in there, grain is important to : consider, but in a round bar the grain will be : linier as you want it to be. .... geeeze ... : I've never designed a torque shaft so big and : with such forces, I hope someone else has and will : support or correct my suggestion. Please do not : design these shafts on my suggestion alone for : this reason. ...

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