Great book. Love what he says about lock washers 73 de KG2V _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting
Of course there are foams (2 part) that mix on spray, and don't require water vapor to cure That said, what is the problem you are trying to solve? Usually foams are used to stop vibration/change res
Still wonder why we insist on using PL259, outdoors. DIN connectors, or even (assuming you dont push the limits/swr ) N connectors, Ill say my 80m antenna is limited by the traps to 500w, (old TV Eva
But then again, using bury-flex as an example, has 9.5 awg center conductor, or .1079, or less than the N connector 73 de KG2V _______________________________________________ ________________________
The pitting (technically brinelling) of the bearing is typical of ANY ball or roller bearing with intermittent or stationary use, with even vibration! (Classic study of auto wheel bearing and rail sh
<snip> The trick to drilling Chrome Molly Mast (which is 4130 steel if you want to get technical) KEEP IT SLOW in RPM, and FEED HARD, and DON'T STOP <yes I'm shouting> Here is the problem - if the 41
It is one of three things 1) take a centerpunch and put a dimple in one of the flats, HARD. Goal is to distort the nut so it won't unscrew 2) use the centerpunch to put a dimple in the surface the nu
One thing Ive also learned. There is a big difference in cost between shipping say palletized crated stuff, and loose, or strap down cargo. Ship a machine that needs to be loaded and strapped. Take t
At the price I see for synchros out there, you might be better off buying a used standard https://www.ebay.com/itm/ASTRO-SYSTEMS-INC-A-202S-5-SYNCHRO-STANDARD/123438349514?hash=item1cbd7fbcca:g:qLEAA
BTW, don't forget any time you need a synchro (Unless you are actually using it as a selsyn - aka driving the motor half as a motor), you can use a Resolver and a Scott-T transformer Synchro - 3 phas
I make adapter that mounts a Yaesu to the TX-2 bolt pattern. Ive sold a few here on the list 73 de KG2V _______________________________________________ _______________________________________________
The short answer to why they get fretting is because ball bearings are not really the best answer for intermittent rotary motion, with vibrational loading. It was why a lot of applications stuck with
I believe they do have rebar in them, but you might have cold seams too (if they dont have enough spare concrete at the end of the day to make a full block. I could ask at work on Tuesday (next time
That I can agree with. Do it like the plans, or get an engineer to do alternate plans -- 73 de KG2V Charlie _______________________________________________ ___________________________________________
<snip> I've always thought that the future of rotors was that we feed power up the tower, and use say TCP/IP to the rotor, and put the brains up there. Before Phillips co-opted the Zigbee standard, I
Had, I miss mercury wetted contactors. Carbon contactors also dont stick, but have higher resistance -- 73 de KG2V Charlie _______________________________________________ ____________________________
Don't know if it is the case with K0GX, but a LOT of Ham Businesses are a sideline, done on a "When I have time" basis - aka they are slightly more than a hobby When your annual volume of sales come
Is it a needle or a ball bearing? https://www.amazon.com/K8-12-10-Consolidated-New-Needle-Bearing/dp/B01JVGV7AU https://www.hendersonbearings.co.uk/k8-ball-bearing-brand-skf.html If you have a local
Hey Gang, This isn't a snark answer - this is me trying to learn, I'm NOT an engineer (although some call me a 'software engineer' - bah) Where do those 2x and 4x numbers come from? I _ASSUME_ it is
Thanks Jim, That makes 100% sense, was wondering where the "Magic" 2x and 4x came from, as I was expecting to see a COS in there somewhere, and moment arms (I know enough to know that) It is a case o