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Looks like a very old phone socket.

Except there should be 2 of them.....

Battery sizes for coin type Lithium. CR2030 for example. Coin Round. (coin shaped and round)..... Last 2 digits are thickness in 0.1mm increments. Leading digits are diameter in mm. so Coin Round 20mm dia 3.0mm thick. SR is Silver chemistry Round. Same but 1.55V usually for watches or old...

My mate turned up at my place with his moota to show me the brand new wide wheels he'd just fitted himself. Every wheel nut was on backward. Took at least 5 minutes before the tears from laughing stopped. He became a nuclear power plant designer.......

If you have electromagnetism, you must have photons as they are the carrier. But if you have photons, do you have electromagnetism? I need a paper by 3pm for my pensioners group....:)

Interesting. Didn't know photons were the carrier for electromagnetism. Does that mean if there is no light you cannot have electro magnetism? Or that electromagnetism creates light.....?

What thread form did you use for the screw in closure?

Purchased enough batteries to take me to 100KwH of storage. The price of LiFePO4 batteries is 1/3 of what they were 2 years ago....

And has made washers that have lasted for 40+ years with no strength problems..... :)

The mid power motors are most likely to cause a cato. Black powder motors become more likely to have a crack as the size increases and when the flame gets to it........ kaboom. So always treat them with care and don't do anything to put a crack in them. Don't drop them... The composite...

Well, there's your project then. And a bar fridge within seat/arm spin radius.

All I can find is this for VP Kamala Harris with covers on Bino's which seems to indicate it was faked. Funny may not be equal to true. :) https://checkyourfact.com/2022/10/07/fact-check-harris-binoculars-dmz/ But if you've got a link..... :)

So what's this pontoon boat thing? Seats for many and do tours? Houseboat thingy, live aboard and chill out for a few weeks? Fishing?

The planes the rest of us fly in don't have an open door at the back. You may find you like them better... :). And you can get a nice lady to fetch a gin and tonic....

Ah ha.... like this.

Must have really good eyesight to hit anything that small.....

Best of luck with your retirement Chuck. Planning any big trips?

A lot of people concentrate on getting the rocket launched. The more important part is getting your chute deployed... Welcome back to rocketry. Lots of new things to play with. 3D printing and Arduinos..... What's not to like. Have fun.

YOU...... posted this on Sunday....... https://www.rocketryforum.com/threads/post-a-pic-that-makes-you-lol.50345/post-2569949 I have enough deja vu in my life... :)

Terry is the master of all things chemical. Listen to him...... But..... Electronics are readily available globally and an arduino and BMP280 are quite capable of detecting apogee for ejection. If you're not making delay grains, things get easier. There are a few flight computer designs on...