Ryan's M3 medium

[cantankrs]

Anthony Urek's current thread has the picture below (the last pic) posted by 'Roy206' of a 6046 power pack. Also in the thread is the same chap's link to their running 6046
Note that there were other combinations of GM 6-71's such as a few pics I've gathered from eBay over the years of GM powerpack configurations for various applications.
Also, here in Western Australia is a fairly legendary primemover or tractor truck built after the war to haul iron ore to port named the Rhodes Ridley and it has a twin powerpack from an M3 Medium along with a gearbox and I think they used the crown wheels and pinions in specially cast diff housings. Click the link to visit their website.
And for Tony regarding the Sentinel, while it was based on M3 Medium drivetrain and tracks, the AC1 employed 3 x Cadillac SideValve V8's. Two other engine configurations tested was the 3 x V8 blocks mounted onto a welded steel common central case something like the Chrysler Multibank; and then 3 x Gypsy Major (I think it was) aircooled inline aero engines in the intial clover leaf layout. The thing was that Australia seemed to not have the machinetools to produce helical gears so they developed a straight-cut geared variation of the M3 box. Bradford Kendal I believe cast the hull and diff housings and turret. Only recently I found that the floor appears to be 3 x flat steel plates bolted into the hull casting, for each the driving, fighting and engine compartments - happy to hear more about this from anyone..?
I note that the French Somua S35 appears to have been a major earlier achievement in being cast as a 2 piece lower hull, 2 longitudinal plate floors, 2 piece upper hull and turret. While BK took the Sentinal's castings further by employing one main casting for the hull (except the diff housing and floors as noted).
Alex

[Ryan]

Hi Tony, the cranes max lift was 28tons according to its hook.

Cheers Bob, thought I'd throw a curly one in.

Ganmain T, here's some pics of the set up. It's a MAN truck engine of 15.2lt, v8 and 300hp. And hey.....you know of a Sentinel do ya??? Check out my Sentinel thread here: http://www.mapleleafup.net/forums/sh...ad.php?t=11517

And cheers for the ID Luke, Adrain and Alex. Here's a close up of one of the suspect track links too.

[Ganmain Tony]

Vast knowledge Ryan that comes from Wikipedia.....

Very interested in all this stuff - always have been. Built all the models when I was a kid, etc etc...

Great powerplant!! Youve just gotta move it to the back...

Would be an awesome start to building a replica Sentinel. They look manificent in pictures with the 17 pounder.

Speculation of course but I reckon they would've done a better job than the Sherman.

Figure wise, on paper they add up. Low profile, sloped armour, very quick (for the day) well armed (with the 17 pounder). The yanks couldve tooled up for this design.... surely.

I vote for building replica Sentinel - but then, it aint my money.

[Ryan]

Tony, a sentinel replica sounds like fun, why not, poeple do panzer replicas on stranger things. Still hoping for a real one. My other half is still reminding me that I should have bought the AC3 sentinel at the john belfield tank auction in 2006. Selling price, $22,500. Yeah. Live and learn.
From your original post I thought you were hinting at the possibility of another surviving Sentinel up your way, hense my " do you know of one". They have to be out there.

[Ganmain Tony]

Originally Posted by Ryan

Tony, a sentinel replica sounds like fun, why not, poeple do panzer replicas on stranger things. Still hoping for a real one. My other half is still reminding me that I should have bought the AC3 sentinel at the john belfield tank auction in 2006. Selling price, $22,500. Yeah. Live and learn.
From your original post I thought you were hinting at the possibility of another surviving Sentinel up your way, hense my " do you know of one". They have to be out there.

No mate I have absolutely no contacts when it comes to armour.

But I agree with building a replica even if it was powered by something not orginal. The purists may get upset, but it would certainly have all the authenticity you would need to have heaps of fun in.

With 17 pounder - it has some of the nicest lines of any allied tank from the war....in my humble opinion.

[Luke R]

Originally Posted by Ganmain Tony

Figure wise, on paper they add up. Low profile, sloped armour, very quick (for the day) well armed (with the 17 pounder). The yanks couldve tooled up for this design.... surely.

I Read somewhere on the net that the Yanks/English did copy parts or concepts of the 17pounder mounting in the AC4 and used them in the Firefly.
Dont know how true this is though?

[Ganmain Tony]

Originally Posted by cantankrs

And for Tony regarding the Sentinel, while it was based on M3 Medium drivetrain and tracks, the AC1 employed 3 x Cadillac SideValve V8's. Two other engine configurations tested was the 3 x V8 blocks mounted onto a welded steel common central case something like the Chrysler Multibank; and then 3 x Gypsy Major (I think it was) aircooled inline aero engines in the intial clover leaf layout. The thing was that Australia seemed to not have the machinetools to produce helical gears so they developed a straight-cut geared variation of the M3 box. Bradford Kendal I believe cast the hull and diff housings and turret. While BK took the Sentinal's castings further by employing one main casting for the hull (except the diff housing and floors as noted).
Alex

Alex seems like I need to back up here before I upset anyone.....My comments about the Sentinel were an attempt to open a debate about Ryans restoration...not so I could jibber on attempting to impress everyone with how little I know....and believe me, my knowledge in this area is very little.

I thought (wrongly it seems) the M3 bottom half was identical to the Sentinel based on what you mention above. So opening a debate about altering the M3 to a Sentinel is now a non debate.

But i would seek some clarification on the differences. The hulls to me look the same, why isnt it possible for Ryan to do a Sentinel look alike?

[Ryan]

Originally Posted by Ganmain Tony

The hulls to me look the same, why isnt it possible for Ryan to do a Sentinel look alike?

My quick observations Tony are that the bogies have a slightly different Layout. The rear idler sits at a lower position and the transmission/final drive housing is slightly different.
But in saying that...if Stephen Speilburg can make a Tiger Tank out of a T-34 and put it in a movie anything is posible.
Some sheetmetal could make the bogies look similar I think, while the upper hull, being started from scratch could be made to look identical.
People make PzIII's out of FV432 APCs so a Sentinel out of a M3 Grant is quite possible.
Ryan

[Ganmain Tony]

Thanks Ryan

I'll now retreat to the back ground having posted waaaayy to many times on this thread...

Look forward to what you are doing with these vehicles of your's and the other blokes who are contributing useful info.

I still reserve the right to ask questions and be corrected on theories.

[Luke R]

Originally Posted by Ryan

if Stephen Speilburg can make a Tiger Tank out of a T-34 and put it in a movie anything is posible.
Ryan

And he made a Lee out of a sherman or preist for the movie 1941 back in the late 70s.
And made shermans out of grant hulls for the series The Pacific.

luke

[anthony urek]

I might try and make an Abrams out of my carrier

[Luke R]

Originally Posted by anthony urek

I might try and make an Abrams out of my carrier

How about a Vickers Mk. VI Light Tank?

[anthony urek]

Yeah thats more realistic. But they are ugly looking tanks. They look like they are about to fall over backwards.


Sorry Ryan....off topic again

[Richard Farrant]

Originally Posted by Luke R

How about a Vickers Mk. VI Light Tank?

That photo is of one of the ten Vickers brought to Australia in 1937 for tank training. It was found in a derelict state and came back to the UK where it was eventually restored for Jacque Littlefield's collection. I did all the electrical work on it at the time. When researching information, I found it was actually based in Victoria, and came across two photos of it on training exercises there.