In my case, the light weight beam was mounted to a tripod at the rear-most end so that the 2m reflector would not foul with the tripod legs. The counter balance required was not much (less than 4 pounds), so I used some fishing lead weight, see link below. It comes in a coil that conveniently wraps around the end of the boom. A length of magic tape secured it to the boom. PS: The arrangement worked fine but I wasn't happy that the weight of the whole thing was now twice the weight of the antenna. Link fyi: https://www.walmart.com/ip/Bullet-Weights-Lead-Wire/52497626 73! Umesh k6vug On Friday, October 4, 2019, 4:02:49 PM PDT, Don KB2YSI via AMSAT-BB amsat-bb@amsat.org wrote: I use a square wooden dowel on the back end of my Arrow that I clip my RX radio on to act as a counter balance.
On Fri, Oct 4, 2019, 18:44 Bob Hammond via AMSAT-BB amsat-bb@amsat.org wrote:
Hasan, front to back on the EL so as to reduce the load on the motor and gears.
thanks,
Bob
On Fri, Oct 4, 2019 at 8:16 AM Hasan al-Basri hbasri.schiers6@gmail.com wrote:
Bob, Are you talking Front to Back (EL) or Side to Side ?
When I had clearance issues I had to mount my 2m yagi forward of its natural balance point. I hose clamped a steel bar on top and parallel to the boom to rebalance the load of the yagi on the rotor. It worked fine.
I
also used tape protected tie-wraps as a secondary safety net, so the iron bar didn't fall on someone's head!
I did not have any side to side balance issues across the rotor. (The
70cm
on one side and the 2m on the other, but if I would have, I would have
used
the same trick: Steel bar on the lighter side of the boom, to balance the load across the rotor.)
Cheap, easy, dirty. But be sure to make that steel bar counterweight
mount
to the antenna boom or cross-boom VERY secure.
73, N0AN
Hasan
On Fri, Oct 4, 2019 at 9:58 AM Bob Hammond via AMSAT-BB < amsat-bb@amsat.org> wrote:
Do a lot of you, or all, use a counterbalance weight on your elevation rotor? If so, how did you implement it?
I have 3 antennas (2M, 70cm, 23cm) on my cross boom and want to reduce
the
load on the Yaesu rotor so it lasts longer.
73s,
Bob W7OTJ_______________________________________________Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available
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