Subject: helical gear
From: Paul
Date: 11/10/2000, 5:12 PM


    I decided to e-mail you rather than reply on the main page in order
to keep traffic down.  My question concerns the helical gear and why it
doesn't create the same problems in cars that we see in re-drives?  It
looks to me like a helical gear is going to create thrust no matter what
it's geared to and probably encounter the same bearing problems regardless
of the application?  I'm no mechanic or engineer so I've probably missed
something like the forest for the trees, but maybe you can explain this in
a way a novice can understand.

Thanks,
Robin

No problem with traffic Robin. I appreciate all questions so we can clear
up this issue.

You are absolutely correct when you state "It looks to me like a helical
gear is going to create thrust no matter what it's geared to and probably
encounter the same bearing problems regardless of the application?"

The answer is in the Ford C6 auto transmissions in the form
of thrust bearings designed to take these gear thrust loads. Unfortunately
Lou Ross overlooked these thrust loads when he adapted the Ford C6 planetary
gear set. I am sure Ford felt the troubles with helical gears were worth it
for the other advantages namely, quieter and stronger.

A straight cut planetary gear set would be better for our application
but right at the moment we have not found a low cost suitable set.

Paul Lamar

Hello all ! Hey if your faces were on some of those pictures I might be able
to make you out at a fly in.  I have a 1994 20 b that I want to put in and rv
8 fyi--- (need rv-8)  any way chevy turbo 400 that came in motorhomes had
straight cut gears from the factory.  anybody working on one of these??/
also you can "t miss me at sun-n-for 2001 I'll be the absolutely cutest guy
there!!   

Paul Roy  Bristol Ct.  

 
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