Inside the Chieftain's Hatch: M47 Patton II Part 1

after World War two the US Army started the development of a series of vehicles to replace the ones currently in service the m4 Sherman was already pretty much on the way out being replaced by the m-46 and the m26 which was derived those however were also pretty much world war ii technology and didn't really take advantage about the developments that had recently occurred similarly the m24 chaffee was developed from the m5 stuart which was developed from an earlier tank and you can see where the lineage has a problem the three vehicles were going to be the T 4 T 1 T 4 T 2 and T 4 T 3 T 4 T 1 was a light this turned into the m41 Walker bulldog ki-43 after a couple of delays ended up being the m103 heavy tank t 42 whoever was lagging a bit behind in development when the Korean War broke out thus giving rise to the Korean tank panic the US Army was not interested in waiting around for the T 42 to really sort out Astro bolts which were mainly with the hull so they decided that as an expedient they would take the turret from the t 42 and basically plunk it onto a slightly modified m-46 hull this would then create the m47 after a fairly brief testing it was approved for production and off the orders went to the factory the T 42 itself continued on with better development the hole ended up being used as the chassis for the t69 medium tank the one with the oscillating turret well you're back at MBT F you're gonna have a look at their m47 and yes you're getting the drill by now outside first Hall and turret and then we hop inside let's get started so off we go front hole 4 inches sloped at 60 degrees as you can see they've removed the rotor cyclone Bowl shut what's on the m-46 but they have retained the by OMG turret armor is also four inches it is listed at 40 degrees but as you can see the turret is angled not just vertically but also horizontally from frontal impacts so the effective armor thickness is actually a little bit thicker so since we have a good example of the fender markings you'll just explain roughly how the armored unit designations work the triangles represent armored units a square would be infantry in there a couple of other symbols as well which can be used usually one bumper will show the vehicle number to tune in company and the other the higher organization so in this case the right fender is showing third Armored Division first battalion of the 33rd armored regiment the other fender shows Charlie to four indicating that it is a Charlie Company tank it is the fourth tank of second platoon and by and large this bumper numbering system actually remains in use today on the front hull of the tank not too much behind the brush guards here we have the various lighting systems infrared marker and service there is a blackout on the other light mounting lifting eyes surprise surprise to lift the tank by OMG already mentioned logs for clevis --is periscopes for the driver and assistant drivers hatches are of a similar design to that fan of world war ii they rotate left and right forwards and backwards for go up and down and of course they are also protected by a bush part of their own this bush guard also of course rotates with periscope you this bolt up here is part one of the tension process in order to access the tensioning mechanism you have to lift up the fender well the fender is hinged which is simple enough but in theory it should also be bolted down I can only imagine in the field how many times people didn't bother putting the bolt back into place however it is technically there once you've undone the locking nut you then take a really large wrench and a couple of adds lever the thing up or down to move the idler for its backwards attention is your track lock the locking nut back into place you can see there are little serrations little triangular teeth these are what actually keep the tensioning arm in place and the locking up obviously forces the either adjustment bolt to the to the arm as necessary that's actually all there is to tensioning this is simply a matter of brute force and time fortunately we've moved on a little bit from them so things get a little bit intricate for the front suspension here you'll see that the two leading road wheel arms from the born number two they're actually mounted right next to each other now what they've done is they've reversed the leading arm in order to save space now if you think by ordinarily a road wheel arm kind of trails down into the rear and that's the case for almost every tank that you'll see in this case however what they've done is they've put the hinge at the back and what this is done is it's basically allowed a shorter hog length while still retaining a bit of a slope for the approach angle for the track now the catch as you can see is that they have left very little room between the nub one road wheel and the idler wheel so it's going to happen firstly if your road wheel arm is too long and it comes down you're going to have an obstacle like a rock or a bump come along and it will attempt to push this wheel up and back as it encounters it to save on this what they've done is they've actually lifted the number one arm so that it's already at an upward angle one a an obstacle comes back it pushes the wheel up and back out of the way still to make room for this action of the wheel to come up they have to move the art of the wheel forward so there are more connections on the back side so as the wheel comes up the idler wheel moves with it this also has the effect of increasing the tension on the track because the actual length of track 1 between the idler and the number 2 load wheel would be shorter because there's less of a curve the number 1 load weight has gone out of the way you can also see other components here the first second last and second from last road wheel arms also have these shock absorbers obviously as you can see there's one here for the idler as well and they also have their volume spring bump stops to stop the arm from swinging too far the tracks are either key 86 dual Chevron or T 80 41 rubber chevron they are 86% inches wide as you can see double pin they have a traditional end connector with a wedge bolt holding it on and the standard guides are this two prong type so what we have here is what my cameraman had just referred to as a vestigial tail this used to be the mounting point for a track tension idler what this looked like was effectively a return roller on a road wheel arm with a torsion bar spring and it was designed to apply pressure to the track pushing it outwards and keeping it tension no matter what was happening with the rest of the wheels now I turned that that was completely unnecessary and as you can see they were removed from the vehicle after a while but you will see it on pictures of some vehicles in the field you'll also see them on some like for example the American heavy tanks World War two and a few even lasted out into the m48 so the back of the vehicle items of interest obviously you have the rear taillight assembly have a lifting eye as you come in you have the box for the infantry telephone partially opens obviously it's been removed from this vehicle as you move further down you have access doors the central access door is used to get the transmission and these two on either side are brake access doors further down we do have the logs for towing services and the like and finally the pintle for towing things like trailers and you can argue as whether or not a tank towing a trailer was a good idea it was a bit of a fad back in the 1950s to give trailers to tank simply because they were still running on petrol engines the fuel economy was terrible so by adding a trailer you in theory got a little bit more extra range the probably the best one that came out with was the mono trailer for the Centurions the British one but a number were tried by the US Army and none were really found acceptable let's move up to the turret and you can also see a quite a prominent rangefinder blazer it's one on each side sometimes known as frogs eyes coming back hand holds for the tank riders the infantry although in reality what generally happened was that you just put your your cargo your backpacks duffle bags and so on and you tied them to these instead the purposes of the rain guard completely eludes me I have no idea why they put it here Oh Minister tank is designed to be outdoors and wet and there's probably reason your auntie to run very many tanks stowage is not an issue on the vehicle there's lots of boxes on responses such as one my feet are on and they are used mainly for the tools the Pioneer kits and the repairs tools that are used for example yes they have to break track so now the fun bit I have swung day turd out of the way clearing the large bustle so I can access the various louvers and hatches on the engine deck so we're going to open up the sides of the engine and also underneath me the transmission I need my PT so here we go I should point out also just how thick these things are these are not light pieces you can also see the in addition to the weight the first one is also screwed in place and all the other ones are open in sequence after it now I should say that although the vehicle does look a little bit ratty she is actually in running condition so underneath me is the Continental a b-17 90 - five B it's a twenty nine point four liter continental engine it's a v12 one's on Magneto's to get at it you'd lift the oil cooler out of the way to get at the oil cooler you have to remove these louvers now fortunately although they are bolted down and frankly we couldn't go off and find a large enough drive to open them up once the bolts are removed actually lifting the cooler louvers out of the way I'm not too much of a problem it's a two-man lift yes but it's something easily done in the field the open space to the right is where a thirteen point six horsepower auxiliary motor will go this is for basically running the tank systems when you don't need the power of the main engine you want to savor the fuel or noise obviously removed from this vehicle it does have a hand Start option so if you've actually let your batteries drain all the way down you're saved the engine being a magneto driven system doesn't actually need to have the battery generator running either once the engine is in motion Magneto's will take care of the rest batteries for in this vehicle all of the 12 volts giving a standard 24 volt system to batteries in parallel in series engine oil engine dipstick not quite next to each other the oil filler cap is to the rear the dipstick for the Ford total capacity 12 gallons to the rear the transmission is a CD 850 - 4 as explained in the m26 video cross drive a 50 input horsepower fourth of the series steering is done by control slip differential help speed reasonable 30 miles an hour reverse 12 laps on side of the engine you're going to have the oil filler cap and the dipstick which goes right next to the bank you really want to make sure you don't drop anything down here so the term monster is well known the third monster will eat anything that you happen to need your pan map what have you there is an equivalent whole monster which will take bolts North's tools and other things and you can imagine dropping something then it requires a removal of the entire pack if you really really need to get it back so it is highly recommended Aeon you don't accidentally lose your grip on anything then you can reach the dipstick itself right so I want total capacity 16 gallons and you say this vehicle is in running order also underneath me you can see one of the two radiator fans basically so care blow Matt to the rear manufactured by Sawyer Bailey of Buffalo New York so at the back we have the cross drive transmission transmission oil comes in here another nice one dipstick this particular one carries 23 gallons of transmission fluid so that's substantially more than the petrol tank in your car transmission itself nice and compact this the section in the middle on each side we have the brake mechanisms which is mentioned were adjusted by the access panels on the rear of the vehicle just on the very edge you can see the final drives and that's the final reduction gearing from the transmission to the sprocket wheels lastly the gun travel lock is also on the back deck as you can see it's multiple hinges with a very simple screw system to clamp the barrel in place probably that's much easy one there's a barrel in it well that's the end of part one I now have the joy of closing this all up spinning the turbine the front preparing for part two and that's where I'll see you next time

Channel: World of Tanks North America

Views: 414,929

Rating: 4.8951344 out of 5

Keywords: wargaming.net, wargaming, War Gaming, wga, wg, wargaming official channel, pc gaming, video game, PC, computer game, world war II, mmo, multiplayer, world war I, WWI, WWII, Free To Play, freetoplay, F2p, FTP, Free to win, FTP Games, F2P Games, game, gamer, gaming, military, Military simulator, Historical game, WW2, combat, wot, world of tanks, World of tanks official channel, armored vehicle, tank, tanker, tanking, Tank simulator, yt:cc=on

Id: LzCzaEy7Sq4

Length: 15min 52sec (952 seconds)

Published: Tue Apr 19 2016