Hi Ken! In a previous posting you described owning an SSV...what foundation type did you go with? I have 120' of SSV I am planning to erect, but I'm having trouble finding a company which can do a be
"...I was wondering what the "magic ingredient" in ATF was that The factors contributing to ATF's penetrating and antioxidative performance is due to the additive package, which makes up up 15% of A
Hi Gary, In my day job as broadcast engineer I have ordered a lot of parts from Valmont, and they are a great distributor. I'm not sure how much of what they sell they actually make, but they do have
Hi all, Great topic! Each gear setup is designed for a specific load/relative surface velocity in order to give good service. Spur gears can be run in the open at very low velocities with zero lubric
PolyAlkyline Glycol lubricants are part of the new API Group V Synthetic lubricants and have unique characteristics lending themselves to gear oils. In general they have very high shear friction, ass
The torque differential between driving the input and output of a worm gear drive (driving the worm, versus driving the worm gear) is largely dependent on the pitch angle. You could call driving the
Patrick NJ5G As does plexiglass (acrylic resin). When specifying any plastic for direct sun exposure UV-stabilized grades must be used if long life is desired. Given this caveat my choice would be fo
Hi all, I use a highly modified version of Alan Biocca's PADS (Pneumatic Antenna Deployment System): http://www.akbeng.com/ I second Jim's statement, in several years and close to a hundred shots I h
The counter-bore clamping method is ingenious and interesting, kudos to whomever thought of it! A through-screw compressing both inner and outer tubes will distort both to a similar shape and therefo
You were smart to use DOT 5, being polysiloxane based it absorbs very little moisture. Most common DOT 3 and 4 brake fluids are polyethelyene glycol and absorb moisture. Repeated thermal cycling wil
or six 2.4? OD cores" Good prices for Fair-Rite mix 31 parts: https://proaudioeng.com/fair-rite-ferrite-products/ _______________________________________________ ____________________________________
contact with any metal Other than that, water hans - N2JFS" I second that and would emphasize ESPECIALLY distilled water is chemically active. After 30 years running an ultra high purity water syste
I agree with Jim Brown, the toroids are fragile! We ship all of our toroids in the correct foam packaging supplied by Fair-Rite. The Snap-Its when shut are much more durable, still all ferrite produc
Richard, I have 9 different documents from the original Force 12 which cover the C3, C4, EF140, and XL variants all which share geometries. I'd be glad to email them to you and you can sort out if th
TTalkians, I have a 20' long steel mast (looks like chrome moly) with 0.25" walls, which until today I assumed was 2" in diameter. I had taken it down from the tower where it was in service, so at th
A big thank-you to all who replied off-list. I agree with all that what I have is a 20' long piece of Schedule 80 water pipe...the odd thing - it is stainless. Outside for 6 years with me, and maybe
Hi TowerTalk braintrust, Can owners of the Force12 EF240S / C4SXL tell me if the 3T loading coil is needed on the 40M driver feedpoint for a proper match? In the manual it calls out one, but the used
Hi Daniel! As one who went down the Rohn SSV path, their method of sizing for wind loading is a bit different, and largely unpublished. Their published loadings are all limited by the smallest top se
One of the best tower people in the industry is Tim Jellison - KL7WV: http://kl7wv.com/ I've been a broadcast engineer for over 30 years, and I worked with him on an install at N3ND and was really im
Hi Chris, Depending on the exact leg diameters and center-to-center spacing it could be either a Rohn SSV or a SSV variant. You will be able to verify one way or the other by measuring the leg diamet