Dave,
I have had problems with the T2X's also. They would get stuck in one position
and wouldnt turn.Sometimes I could momentarily turn it in opposite directions
and sometimes would be OK.I found out that the wedge brake is the culprit, poor
design. It gets stuck if you dont let it completely coast
to a stop before releasing the rotate button. My current T2X, I have taken
down and completely
over hauled with new bearings, etc. Reinstalled it and now I give it an overly
generous amount of time to coast to a stop. Havent had any problems and it has
been up for 4 years now.
BobK6UJ
From: DAVE WRIGHT via TowerTalk <towertalk@contesting.com>
To: "TowerTalk@contesting.com" <TowerTalk@contesting.com>
Sent: Saturday, February 18, 2017 9:57 AM
Subject: [TowerTalk] T2X Multiple failures, fix?
Greetings all,
I've been having a continuous problemw/my tower setup since installed in 1993'.
I just can't figure it out. I've mentioned this online in the past, & received
much helpf/hams/clubs & groups (K6EAG/TT/& NCCC) both local & abroad,thank you!
However the system is still having the same problem; itseems incurable. :(
The system is: Tri-Ex LM-354 tower (54'HD crank-up, w/tilt-over base), that
keeps eating rotors. The Yagi isa Mosley “Pro-57b,” mounted on various mast
lengths/strengths(both short & long), 2” OD/1/4" ID f/aluminum. Have also tried
differingmaterials (both steel & thick-wall aluminum), w/a thrust bearing(used
3 in 23 years/both stainless-steel sealed bearings, &“open” bearings using
marine grease (local salt-air/SF, CAbay-side.) I've been using T2X rotors
mounted IN tower f/the start; & they eitherdon't last long, or quit immediately
(last 2), “right after” arebuild.
Originally purchased the 1strotor new, & have had the last 2 rebuilt/exchanged
several timesvia the two popular repair/rebuild shops here in the US. The
onlypossible problem I can see from the ground is the Yagi “swings” abit back &
forth after done turning/brake initialization. (looks like the swing is too
much?)
Other than that, nothing seen exceptwhen it starts to fail, it will not turn up
on tower; even though itturns fine on the ground. That is, until it becomes
“stuck” forgood/then I send it off f/a rebuild. The repairs typically
mention“brake failure.” I have since purchased the “brake-delay”PCB, & the next
rotor will have it installed in box.
At this point I'm -almost- positiveit's an “alignment” issue(?), but I'm not
clear how proceed. Ihad assumed perhaps wrongly that once everything was bolted
together,it's functional/should work. I have now been advised that
assumptionmight be incorrect. If someone could point me to a link/site
w/theironclad alignment procedure in writing/illustration/or video, thatwould
be perfect.
When functional, the system worksgreat! =304 worked/277 confirmed. Most w/this
system, & a fewwires/dipoles/ smaller Yagi's prior to this large Yagi. Problem
is,it's been down more than 60% since installation. Never had theseproblems w/a
small tri-bander; this just sucks! :( I'veabout given up; & haven't been on
much at all. (99% HF.)
This record of failure is justintolerable, & now that my age is getting up
there w/healthissues, I won't be able to work on it much. Need help as itis.
Any suggestions/troubleshooting discussion? I would be reallyhappy to get on
air & try f/the last few “rare ones,” &do a few more of the popular contests
before kicking da bucket. :)
Thank you all,
Dave K6JOX 73
_______________________________________________
_______________________________________________
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
|