[TowerTalk] Swinging gate antenna mount

[Joe Subich, W4TV]

For Hy-Gain rotors (AC Motors) micro switches in series with wire 6
(left limit) and wire 5 (right limit).  However, the torque even
for the T2X probably won't damage anything.

73,

    ... Joe, W4TV


On 2020-06-05 7:33 PM, Grant Saviers wrote:
> For DC motor rotators a couple of microswitches (rated IP65 or better) 
> in the power line, bridged with diodes that conduct in the direction 
> away from the stop point are my backstop for blowing past soft limits. 
> Bridge the diodes with TVS diodes or MOVs to help with the motor kick.
> 
> ?? for AC motor rotators.
> 
> Grant KZ1W
> 
> On 6/5/2020 14:41, Robert Harmon wrote:
>> Dumb question.   When using the swinging gate, how do you make sure 
>> when the rotator swings it around it won't hit the tower ?
>>
>>
>> Bob
>> K6UJ
>>
>>
>>
>>> On Jun 5, 2020, at 1:52 PM, Grant Saviers <grants2 at pacbell.net> wrote:
>>>
>>> I have a Rohn 65 design in CAD, never built it, went with rings 
>>> instead.  Should have done the arms.  All 1/4" HRS steel plate, 
>>> standard angles and channel, plus 2" NPT pipe, although other 
>>> tube/pipe choices are easy.  Different leg diameters depend on the 
>>> u-bolt size (minor hole location change needed). Designed for hot dip 
>>> galvanizing.  I designed for two antennas for up to 20' of pipe 
>>> between top bearing and rotator. Or one antenna on a short pivot 
>>> "mast". Uses a standard mount rotator at the bottom (my plan was 
>>> Orion 2800) and a UHMW bearing at the top.  Make the plates on a 
>>> laser or waterjet cutter.  Weld it up and HDG.
>>>
>>> Reply off list and I well send 3D pdf's to review. Enough interest 
>>> and some weld shop might make them.  Everything should UPS except the 
>>> pipe, buy it locally.  Adding tabs and slots to the top and bottom 
>>> supports for self fixturing of the welding would be nice.
>>>
>>> Grant KZ1W
>>>
>>> On 6/5/2020 11:46, Jon Zaimes via TowerTalk wrote:
>>>> Try here: http://www.w9iix.com/ii00012.htm
>>>> Jon P. Zaimes, AA1K
>>>> Tower climber for hire
>>>> Website: aa1k.us
>>>> Cell: 302-632-2353
>>>> Email: jz73 at verizon.net
>>>> Hug your favorite tower every day, and always stay connected to it
>>>> On Friday, June 5, 2020 mike stokes <mike9v at gmail.com> wrote:
>>>> I am looking for one as well.  Please reply to the list.
>>>> 73
>>>> Mike
>>>> KK9V
>>>> On Fri, Jun 5, 2020 at 2:20 PM Ignacy Misztal <no9e at arrl.net> wrote:
>>>>> Does anybody make swinging gate mounts? I need one for 45G.
>>>>> Ignacy, NO9E
>>>>> _______________________________________________
>>>>>