placing chrome moly steel mast=20 on tower top It will have a few yagis on it HOW necessary is it to drill a PIN thru the mast to insure that it does not rotate??? Obviously , this might stress the r
Josh....looks like you answered your own questions....I think the answer amounts to asking yourself which you would prefer doing (presumably after a big wind): a) replacing a broken rotator b) loose
Generally speaking, it is NOT a good idea to drill holes in a (strong) mast. This tends to increase the stress lines around the hole. Pinning a mast to the rotor only transfers the most likely failur
For years I've been NOT pinning masts because many times the mast slips in the rotator in the wind and it's easier to recalibrate the antennas than it is to do a rotor swap. With big wind-induced tor
<< IF you still insist on reducing the likelihood of mast slippage, place a thin sheet of rubber between the mast and the rotor. >> I've known of a fellow using (automobile) radiator hose for that ap
For towers under 50ft there is another solution...run a pipe down to the bottom of the tower and mount the rotor on the concrete pad. Easy access for maint. and if you want you can let the antennas s
Pinning the mast will void some rotor warranties. The M2 Orion comes to mind. Clamp the mast as tight if you can. If it slips: loosen, reorient, retighten. That's usually cheaper than replacing the r
I have been using 32' of 4130 mast for 22 years in a Create RC5B-3 rotor without pinning it. I have never had the mast slip. Antenna load has varied from 3 Hygain Long Johns with a shorty 40 to the p
Recent production Yaesu rotators include a slip sheet in the manual about how to avoid this. It's a variation on the old Hy-Gain tightening sequence trick -- first tighten the mast clamps on the mast
<< Obviously , this might stress the rotor given high winds - but it is unlikely the yagis would rotate on the mast.>> << Josh....looks like you answered your own questions....I think the answer amou
This subject's been beated to death before, but I also subscribe to the "no pin" theory of Advanced Avoidance of Rotor Replacement. I can realign my beams in fifteen minutes, but swapping out the rot
MY CD44 / TR44 rotors usually came to rest up against the STOP. If I remember right, one internal lever was bent on one such rotor. Tom N4KG __________________________________________________________
How much sunlight can reach a piece of rubber that is " sandwiched between the rotator clamps and the mast" ? Tom N4KG sunlight... ________________________________________________________________ Sig
I DO NOT recommend pinning masts. Did that ONCE .. worked swell, for about 1 1/2 years . then, cost me beaucoup bux to fix rotatator .. actually, just replaced it .. and gave the busted one to the di