I have no confusion. It was a 57 breech bored out to a 75. Was it a Cromwell he was in?
In a Sentinel the gunner CROUCHED and he did have a seat. He was expected to use it. As for the rest of the commentary, spot on.
It was a Crusader. See
here from 3 minutes 40 seconds to 4 minutes 5 seconds.
I got in contact with a Museum Curator about the Sentinel. It took them a while for them to get back & me to get around to writing this, but anyhow here's some choice parts from their response -
(Paraphrased) - "Our copy is currently undergoing asbestos remediation, so we can't access the interior to take photos, but..."
"I contacted Mick Cecil who was formerly head of our section here and who is a world acknowledged tank expert. He is currently living in the US. He sent a detailed response"...
"The Youtuber is a US National Guardsman and the resident 'historian' for World of Tanks, some sort of gaming platform. His name is Nicholas Moran, aka, 'The Chieftain'. I've watched a couple of his Youtube videos, and marvel at his uninformed comments and conjecture. As you can gather, I take Moran's comments with a bucket of salt. I believe he is unduly harsh in his critique of the AC1. It may not be the best design, but it is not nearly as bad as Moran would have us believe. "
Why not just admit you are wrong? Is that too difficult to do?
Here, I'll go first. The gunners seat isn't down when it should be folded up, in Mike Cecil's words (cont);
"What led to this was several uninformed statements by Nicholas Moran, who is seated in the video in the gunners position
at right angles to the line of the main armament with the seat at its
maximum height adjustment. To be fair, the interior of the Australian Cruiser is very cramped, as were all small-diameter turret tanks of the period."
He continues on, TL: DR;
- Moran gets the power traverse wrong. It's infinitely variable, there's a voltage regulator wired to deliver constant volts & amps above a minimum engine rev. The faster the handle is turned the faster it rotates. It only needs one engine to drive it, not three. Advanced for it's day, it wasn't until the Centurion that tanks in that line of development had traverse on battery only, & that was only for an emergency duration.
- Moran doesn't understand that the manual traverse disconnects from the power traverse. He thinks he's read the (workshop) manual, but it's more likely the instruction book (provisional) that he's read.
- Talks about the other crew positions, consults photographs he took of the last time he was in the tank from 30 years ago to be sure.
I think it's worth noting that the Average Australian soldier in this period was 5'7", it might well have been easier for them to find someone that fit.
Would they even think they need the A10s? In 33 light tanks might be perfectly acceptable by themselves to Australia especially if they can share production facilities and engines with carriers to reduce costs?
Would they want to include some local AT light tank (2pdr or 15mm etc), TD with fixed gun or carrier or just buy/swap for a few heavier UK made tanks to fill that gap?
This is the boring part, everybody likes shiny kit but simply funding larger reserve formations to train up experienced NCOs or flying doctor auxiliary squadrons with de Havilland DH.84 Dragons for the RAAF is not that cool as fighters or tanks.
De Havilland had a scandal around this time that changed the course of the Australian aviation industry. Same thing happened with their passenger aircraft that happened with the first Mosquito's built in Australia. Glue that works in European conditions
doesn't necessarily work in Australian ones. Those in charge looked at what Britain had. Wooden stuff that disintegrates in mid-air. Then at what the U.S had, the DC-3. That's why the Commonwealth Aircraft Corporation had the Twin Wasp for the CAC Boomerang available.