X-Mozilla-Keys:                                                                                 
Jeff Spitzer wrote:

At 06:20 PM 8/26/99 -0700, you wrote:

Jeff Spitzer wrote:

I will take a look at back to back tapered bearings for this
application. Do you think my calculations are right for
the helix thrust?

I didn't check your calcs.  I believe the formulas can be found in
Machinery's handbook or the Boston Gear catalog.  I'm sure you have both.

I would suggest that you abandon the pilot in the e-shaft and add a
flywheel-end bearing to your input shaft.

Do you mean abandon the pilot in the output shaft?
One needs a pilot in the output shaft for the sun gear
shaft.

If you do indeed mean the pilot in the e-shaft yes I think
that will work. However any bearing added would then act as a pilot
would
it not. I am a little confused on what you have in mind here.
Would'nt this limit the diameter of the bearing? I'll consider it.
can you make a sketch and send it? I am open to all suggestions.

I mean don't put anything into the end of the e-shaft.  Not because it
can't take it but because it's too difficult to align to it.  IIRC most
transmissions have a "front" bearing for the gears and the crank pilot is
far enough away to flex or the better yet there is a spline with some
compliance.  Aligning your planetary set with the end of the e-shaft is a
mistake.

Jeff Spitzer

OK Something like this Jeff?

Paul Lamar
 
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