[TowerTalk] HDR3-00 on the AS455G shelf?

[al_n6ta at comcast.net]

Thanks for the info, John.
My problem is starting torque for the SteppIr with 40 M dipole mod.  he T2X worked FB on the TH6DXX but now the existing rotor seems to be very fussy about the alignment from the rotor thru the TB3 at the top plate.  In some directions, the beam will just not turn.  I have to be sure to NOT leave it in that position or I will make a trip up to assist while the XYL uses the control box.  I think the imbalance is also part of the issue and adjusting the shelf to adjust the alignment is not working out.
So, I either somehow fix the alignment, if that is really what is the problem, or get more starting torque.  I will review the HDR specs to ensure it is indeed better.  I do not think this SteppIR is a test for the HDR300 since the yagi is modest and I am not dealing with big-time winds.  Was it the key or the keyway?
Thanks for the words.
Al
N6TA

----- Original Message -----

From: john at kk9a.com 

To: TowerTalk at contesting.com

Cc: al n6ta 

Sent: Tue, 10 Nov 2009 14:05:59 +0000 (UTC)

Subject: Re: [TowerTalk] HDR3-00 on the AS455G shelf? 



About two decades ago I had two Hy-Gain HDR-300 rotators and I don't recall any bolt hole issues, however I do recall a lot of problems.  The biggest issue was with the keyway on the shaft wearing out and needing yearly replacement.  If the T2X is not up to your task, I doubt that the HDR-300 will be.  



John KK9A







To:  TowerTalk 

Subject:  [TowerTalk] HDR3-00 on the AS455G shelf? 

From:  al_n6ta at comcast.net 

Date:  Tue, 10 Nov 2009 05:25:10 +0000 (UTC) 





My T2X is not quite up to the task anymore so I thought I might replace it with 

an old HDR-300 that I have had in storage for 25 years.  Anyone know if it will 

fit the AS455G accessory shelf that suports the T2X currently?  If it will fit, 

does anyone hae a guide as to where to poke the new holes for the 300?  I just 

cannot find a dimensioned drawing for the shelf.



Thanks, all!



Al

N6TA