[TowerTalk] Prop Pitch info wanted

Jim Hargrave w5ifp at gvtc.com
Sat Feb 7 15:13:36 EST 2009


Running without oil/grease is a definite NO No!

With the high ratio gear box, the Motor and initial gears are running at
several 1000 rpm. They definitely need lubricant.

   * 73's Jim W5IFP *


   >-----Original Message-----
   >From: towertalk-bounces at contesting.com
   >[mailto:towertalk-bounces at contesting.com]On Behalf Of K7LXC at aol.com
   >Sent: Saturday, February 07, 2009 7:31 PM
   >To: towertalk at contesting.com; n9en at charter.net
   >Subject: Re: [TowerTalk] Prop Pitch info wanted
   >
   >
   >
   >In a message dated 2/7/2009 8:57:01 A.M. Pacific Standard Time,
   >towertalk-request at contesting.com writes:
   >
   >>  I am getting ready to "retire" an overloaded  Tailtwister
   >rotator with a "small" prop pitch motor (9,576:1  reduction
   >ratio) and was wondering about a couple of details in
   >regards  to putting it in service.
   >
   >>  I was thinking about putting a  light coating of low-temp
   >grease on the gear surfaces inside the gear  housing, as
   >I understand that it's not advisable to fill it with oil,  due
   >to the motor being mounted in a vertical position. Is that
   >an  advisable thing to do?
   >
   >
   >    Sure. The thing only runs at 3/4 RPM or so  intermittently
   >so a lot of
   >guys run them without oil. And yes, oil will seep  thru the
   >gasket. It's not an
   >issue when they're installed in their normal  horizontal
   >orientation when
   >mounted on the airplane.
   >
   >Cheers,
   >Steve    K7LXC
   >TOWER TECH
   >
   >
   >
   >
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   >of all time on
   >AOL Music.
   >(http://music.aol.com/grammys/pictures/never-won-a-grammy?ncid=e
mlcntusmusi00000003)
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