Author: Garry via TowerTalk <towertalk@contesting.com>
Date: Thu, 9 May 2019 01:08:24 +0000 (UTC)
Greetings all, I am rebuilding a 17 meter beam I built about 35 years ago. At the time I used slots and hose clamps where fastening element sections together but this time I am going to use sheet met
I like the system used on the W3JK antenna I'm building right now. It uses hex head machine screws with nylock nuts (UV-proof). The hole in one side of the outer section is drilled larger, so the sc
Hi Garry, Using rivets and a hand rivet tool can work quite well and does a nice, clean job. Maybe just use a slotted end with hose clam on each end tube for adjustment. I have a 6 meter first direct
Scott, Not hex head screws. Socket head (Allen) cap screws instead. Outside perimeter of head is round. Big difference. 6-32 for 5/8" and smaller, 8-32 for 3/4-1-1/8" and 10-32 for larger up to about
Using rivets and a hand rivet tool can work quite well and does a nice, clean job. Maybe just use a slotted end with hose clam on each end tube for adjustment. I have a 6 meter first director that a
Personally I like hose clamps however you have to get quality ones with a wide band and stainless steel screw. It is unlikely that you will find these at the big box stores. Why do you want to change
Not hex head screws. Socket head (Allen) cap screws instead. Outside perimeter of head is round. Big difference. Sorry, socket head hex screws. 73, Scott K9MA -- Scott K9MA k9ma@sdellington.us ______
The last time I worked on the A3, I found that the hose clamps just wouldn't hold the tubing securely enough that I couldn't easily move it, so I added the sheet metal screws. (The hose clamps did s
Just my $.02 on the subject. #1. I've found that using sheet metal screws will upset the metal enough to make disassembly a bear. inner/smaller element it is because you have to much of you favorite
Author: Bryan Swadener via TowerTalk <towertalk@contesting.com>
Date: Thu, 9 May 2019 17:18:39 +0000 (UTC)
Garry, When I need a lot of clamping force from a worm-drive "hose" clamp, I prefer to use the type that secure the screw housing using four tabs/slots McMaster-Carr calls them "Vibration-Resistant
Good Afternoon All, What Bryan is describing here is a SAE J1508 Type F HD clamp that uses a "staked" clamp design, which uses a two-piece housing is staked at each of the four corners. The true HD v
Author: Garry via TowerTalk <towertalk@contesting.com>
Date: Sat, 11 May 2019 21:33:45 +0000 (UTC)
Many thanks to all who responded to my question on screw size for elements and to those who offered other suggestions and comments. Thanks again & 73,Garry - K4OR ____________________________________