Dan,
I used an AR-rotor (think it is an AR22) for years, turning my 6 x 16el EME
array..! The yagis had 30' booms. Of course, it drifted a bit in very
strong winds but I never had a problem with it. The rotor was mounted
inside the tower, about 5 feet below the thrust bearing. Of course, the
indicator was not good enough for an EME array so I used a chain driven
selsyn for 'precise' readout.
My AR-rotor is still going strong after 30 years but is now doing different
service rotating a 10 mtr monobander + VHF stack on another tower.
The EME array has been upgraded to longer booms and more elements and I now
use a worm drive and a 3-phase motor to turn it.
Good luck.
73/Peter SM2CEW
www.qsl.net/sm2cew
At 03:56 2002-03-26 , you wrote:
>
>> the TR44 cannot be upgraded to a HamM simply by adding bearings.
>> Mike / W8DN
>>
>Hi Folks,
>
>I have a similar question. I'm currently "re-conditioning" an old AR40
>rotor [or rotator, if you prefer]. After a good cleaning, it seems to be
>functional, but one of the clips on the bearing retainer is broken and will
>need replaced. Since I need to replace the clip and bearings anyway, is it
>OK to use a bearing kit from a bigger rotor, such as a Ham IV? Seems like
>it should work, I think they are all in the same size case, etc...
>
>I only intend to turn a few VHF/UHF yagi's, so I believe this rotor will be
>plenty strong enough for the job. No EME arrays here, hi hi.
>
>73
>Dan
>
>Dan Evans N9RLA
>Scottsburg, IN 47170
>{EM78}
>IN-Ham list administrator
>QRP-l #1269
>1/2 of the N9RLA /R no budget Rover Team
>Check out the Rover Resource Page at:
>http://www.qsl.net/n9rla
>
>----- Original Message -----
>From: "Mike Rhodes" <weightdn@adelphia.net>
>To: <towertalk@contesting.com>
>Sent: Monday, March 25, 2002 9:38 PM
>Subject: Re: [Towertalk] TR44 rotor slips.
>
>
>_______________________________________________
>Towertalk mailing list
>Towertalk@contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk
>
|