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[TowerTalk] HDR-300 question

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Subject: [TowerTalk] HDR-300 question
From: (Doug Renwick)
Date: Sun, 23 Sep 2001 14:26:32 -0600
The key way at the shaft-mast clamp platform or the key way at the shaft-large
gear or
both have enlarged.  Your can:
1.  Replace the shaft and large gear.
2.  Have the mast clamp platform key way milled to take a larger key.  It will
eventually fail again.
3.  Have the shaft and large gear brazed together.
4.  Some of the above and add a 'torque system' to soften the back and forth
action of the antenna.
5.  Use short boom antennas.

I tried a double key way on the shaft-large gear and it eventually enlarged 

Fred Helmstetter wrote:

> I installed a well-used HDR-300 last summer to turn a 5 el 20m Yagi (40ft
> boom) and miscellaneous other smaller antennas on the same mast. The HDR-300
> moves the stuff around quite well but there's 10-20 degrees of "play" in
> direction when the brake is engaged.  Even in fairly light winds the
> antennas always seem to be wiggling around.  Not a big deal on 20m but it's
> a bit of a hassle with the 9WL 432 beam at the top of the mast...  Is this
> "normal" for the HDR-300?  Any way to fix/improve it?
> Thanks,
> Fred, N9FH

Doug Renwick VA5DX
PO Box 50, Clavet, Saskatchewan, Canada S0K 0Y0
First VE5 2 x 5BDXCC and 160 M DXCC
What profit it a ham if he gains all the awards yet forfeits his soul?
I'll run the race and I will never be the same again.

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