My G-1000DXA rotor came completely unhinged from its GC-038 lower mast clamp and left my 3-el Steppir and attached rotor dangling from the attached cables. It appears that the attachment bolts on the
I should have mentioned that in the photo, the right two shots of the mast clamp show zero damage to the mast clamp itself. The left shot shows the one damaged bolt hole on the rotor itself. ________
Hi Barry, Glad you didn't have damage to the beam. I don't know much about the 3el Steppir, but that seems like a lot of antenna for a mast mounted rotor. The antenna wobbles back and forth, loosenin
Thanks for responding Chuck. I'm on rented property, so I need to use the AB577 and a lower mast adapter type rotor installation. Isn't there any way to prevent the bolts from working loose like they
Has anybody used Nord-Lock vibration proof lock washers? http://www.youtube.com/watch?v=mgwmuZuJ02I Barry N1EU _______________________________________________ ________________________________________
I put up a G-800 in the last year with a lower mast clamp. If I remember right, I had to swap out the bottom bolts that came with the G-800 with longer bolts, when the mast clamp was used. I had the
Barry Those look interesting!! I see that Fasenal carries them 73 Larry K1ZW --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On Behalf Of Barry N
The original bolts are lost now but the GC-038 doc calls out M8 X 25mm long bolts. The holes are deeper - there's still probably a half inch or more of threaded hole deeper than what is broken off on
Another consideration would be to properly torque the bolts based on the materials involved. Too lose and they can work their way out and if too tight they are prone to stripping. Regards, John NA6L
I noticed that a used G2800 I bought had Helicoil inserts in the base holes. I don't know if this was a retrofit or factory install. In either case, Helicoils substantially increase bolt pull out rat
Grant has a good idea with the Heli-coils although you *may* have enough thread left for a secure hold. Rather than lock washers I'd use medium grade "LocTite". I don't remember the colors now for th
Author: Pete Michaelis - N8TR <pete.n8tr@gmail.com>
Date: Tue, 27 Dec 2011 15:50:34 -0500
Hello, Even when a rotor is mounted on a plate, the bolts can and do fall out. One of the best ways to prevent this is to safety wire the bolt heads using SS wire. For some pictures see: http://tinyu
Pete sez: Even when a rotor is mounted on a plate, the bolts can and do fall out. _______________ Yup, this happened to me. I noticed my antenna leaning a few degrees off plumb one day, and a closer
Yup, I'll go with Loctite (instead of anti-seize) and Nord-Lock lockwashers. I'd also go with a bolt head securing system, but I'm not about to drill bolt heads and I don't see M8 bolts being availab
You can get Locktite Quicktape-249 which is a nicer way to go. You apply it like the way that Teflon tape is applied to plumbing threads. If I remember it is Blue. You just pre-apply it to the bolts,
And, when it's time to remove said bolts, the threadlocker can be released with heat. I use Loctite 242 high-strength threadlocker in HP automotive applications, and it releases with heat from a pro
Author: Pete Michaelis - N8TR <pete.n8tr@gmail.com>
Date: Tue, 27 Dec 2011 23:59:43 -0500
One can actually buy M8 Titanium bolts with drilled heads but they are extremely expensive. See: http://www.yoyodyneti.com/category.aspx?categoryID=2776 The Loctite should work well and serve to prev
Aircraft Spruce is likely to have aircraft grade M8 bolts (and nuts) that are drilled for safety wires at reasonable prices. The only difference for aircraft grade that I know of is the threads are r
Take care to use the right grade of Loctite. The blue liquid 242/243 should be fine for the three undamaged holes, as it is designed to be released with hand tools. For the fourth hole that doesn't
Barry Just be careful not to insert a bolt which is even a tiny bit too long. If you do, when you tighten it up it can push the material at the end of the hole away, which can weaken the rotator casi