[TowerTalk] T2X Multiple failures, fix?

[Patrick Greenlee]

Dave, Sounds like you need more rotator.  The delay on the brake should 
help, give time for the amplitude of oscillations to dampen before 
engaging.  If the rotator still dies early even with the brake delay 
then more rotator is definitely needed.  Over time you have made 
payments for a really stout rotator but got rebuilt equipment that keeps 
breaking.  You could have bought a good prop pitch motor conversion from 
Kurt Andress K7NV and have been  way ahead on  $ and suffered much less 
frustration. Maybe now is the time to upgrade rotators.

Patrick        NJ5G  (73 1/2)


On 2/18/2017 11:57 AM, DAVE WRIGHT via TowerTalk wrote:
>   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
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