On 10/27/2010 7:26 AM, Michael W5NIG wrote:
> ...after my last computer crashed and I replaced it and set up all of my
> email accounts I totally
> forgot about this one till yesterday! Over 1k messages from tower talk!
> lol. I think I"ll keep the
> last 5 or 10 and let the rest go ;>
>
> I have my old T2X with the terminal strip that was God knows how old when I
> got it, had my friend
> Bob W5FKN rebuild it for me and it was up on the tower for a number of years
> turning a 25ft mast,
> M2 three ele. 40m linear loaded beam and a Force 12 5ba. Of course I rocked
> it to start (darn wedge brake!)
> and always coasted it to a stop! Usually twice a year I would climb up
> there and realign the beam to
> proper direction. (never pinned it)
>
> ....replacing some tower sections now and will be a while before I get
> aluminum back up but picked up a used
> prosistel 61 for a REALLY good price, but will keep old trusty in the shed
> for my backup :>
Word of caution if it is one of the older "green" PST-61s. The top seal
is a weak point with a reinforcement ridge around it that traps water.
The high carbon steel shaft rusts, then grinds up the seal, water gets
in and trashes the bearings. A simple rubber flange with a slight cone
shape that extends well beyond the ridge, plus packing the recessed area
above the top seal with white lithium grease seems to take care of that.
73
Roger (K8RI)
> Michael de W5NIG
>
>> Message: 4
>> Date: Tue, 26 Oct 2010 23:20:24 -0400
>> From: "David Thompson"<thompson@mindspring.com>
>> Subject: Re: [TowerTalk] Speaking of the HAM Seriesofrotators...How
>> doyoutell the difference.
>> To:<towertalk@contesting.com>
>> Message-ID:<00ac01cb7585$e68a3af0$f85b9a04@yourxb2x7j77gn>
>> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>> reply-type=original
>>
>> I have used a T2X since about 1980. It has the terminal strip on the
>> base.
>> To put it inside my 71 foor Tristao crank up I had to remove one of the
>> sidebars. Lou Tristao advised putting a Rohn 25 guy bar around the middle
>> of the tower section. This takes some work but fits snugly.
>>
>> The rotor has been to repair three times. The first after 8 or 9 years it
>> went to Allen WB4GNT who runs Max Gain Systems (MGS4U). He charged me
>> $75.
>> I sent to him as a tornado passed over the house and lifted the beams,
>> mast
>> and rotor/rotor plate and tirned the whole mechanism
>> 45 degrees. Brad W9FX worked on it as it took a beating by Hurricane Ivan
>> and wind blasts at 85 to 90 MPH. He did find extensive damage but it was
>> fixed and that was 3 years ago.
>>
>> Tristao/US Tower has what they call a sleeve bearing in the top of the
>> tower
>> below the top plate. I bought a Fafnir commercial bearing that I placed
>> on
>> the top of the tower.
>>
>> When I first moved to Atlanta in the mid 1970's I did buy a converted prop
>> pitch from a fellow in CA (Bob Leo). I think Bob was a WB6. The problem
>> with the prop pitch was it nearly broke the top of the tower off on one
>> occassion when a element caught in a tree. The HAM M/T2X is the only
>> rotor
>> that fits inside my tower. I looked at one of the RD1800's but its
>> slightly
>> bigger and not much better.
>>
>> I do have another old T2X that I use as a temporary replacement when I
>> send
>> the main one off for repairs.
>>
>> 73 Dave K4JRB
>
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|