±Recent Visitors

Recent Visitors to Com-Central!

±User Info-big


Welcome Anonymous

Nickname
Password

Membership:
Latest: freaknikz
New Today: 0
New Yesterday: 0
Overall: 6598

People Online:
Members: 0
Visitors: 237
Total: 237
Who Is Where:
 Visitors:
01: Community Forums
02: Community Forums
03: Community Forums
04: Community Forums
05: Community Forums
06: Community Forums
07: Community Forums
08: Community Forums
09: Community Forums
10: Community Forums
11: Community Forums
12: Community Forums
13: Community Forums
14: Community Forums
15: Downloads
16: Community Forums
17: Community Forums
18: Home
19: Community Forums
20: Community Forums
21: Community Forums
22: Community Forums
23: Community Forums
24: Community Forums
25: Community Forums
26: Community Forums
27: Community Forums
28: Community Forums
29: Community Forums
30: Community Forums
31: Community Forums
32: Community Forums
33: Community Forums
34: Community Forums
35: Community Forums
36: Community Forums
37: Community Forums
38: Community Forums
39: Community Forums
40: Community Forums
41: Community Forums
42: Community Forums
43: Community Forums
44: Community Forums
45: Community Forums
46: Community Forums
47: Community Forums
48: Community Forums
49: Community Forums
50: Photo Gallery
51: Community Forums
52: Community Forums
53: Community Forums
54: Community Forums
55: Community Forums
56: Community Forums
57: Community Forums
58: Community Forums
59: Community Forums
60: Community Forums
61: Community Forums
62: Community Forums
63: Community Forums
64: Community Forums
65: Community Forums
66: Community Forums
67: Home
68: Photo Gallery
69: Community Forums
70: Community Forums
71: Community Forums
72: Community Forums
73: Community Forums
74: Photo Gallery
75: Community Forums
76: Community Forums
77: Community Forums
78: Community Forums
79: Community Forums
80: Community Forums
81: Community Forums
82: Community Forums
83: Community Forums
84: Home
85: News
86: Community Forums
87: Community Forums
88: Community Forums
89: Community Forums
90: Community Forums
91: Community Forums
92: Community Forums
93: Community Forums
94: Community Forums
95: Community Forums
96: Community Forums
97: Community Forums
98: Community Forums
99: Community Forums
100: CPGlang
101: Community Forums
102: Community Forums
103: Community Forums
104: Community Forums
105: Community Forums
106: Community Forums
107: Community Forums
108: Photo Gallery
109: Community Forums
110: Community Forums
111: Community Forums
112: Community Forums
113: Community Forums
114: Photo Gallery
115: Community Forums
116: Community Forums
117: Community Forums
118: Community Forums
119: Community Forums
120: Community Forums
121: Community Forums
122: Community Forums
123: Community Forums
124: Community Forums
125: Community Forums
126: Community Forums
127: Community Forums
128: Community Forums
129: Community Forums
130: Community Forums
131: Community Forums
132: Community Forums
133: Community Forums
134: Home
135: Photo Gallery
136: Community Forums
137: Community Forums
138: Community Forums
139: Community Forums
140: Photo Gallery
141: Community Forums
142: Community Forums
143: Community Forums
144: Community Forums
145: Community Forums
146: Community Forums
147: Community Forums
148: Photo Gallery
149: Community Forums
150: Photo Gallery
151: Community Forums
152: Community Forums
153: Community Forums
154: Photo Gallery
155: Community Forums
156: Community Forums
157: Photo Gallery
158: Community Forums
159: Community Forums
160: Community Forums
161: Community Forums
162: Community Forums
163: Community Forums
164: Community Forums
165: Community Forums
166: Community Forums
167: Community Forums
168: Community Forums
169: Community Forums
170: Community Forums
171: Community Forums
172: Community Forums
173: Community Forums
174: Home
175: Community Forums
176: Community Forums
177: Community Forums
178: Home
179: Community Forums
180: Community Forums
181: Community Forums
182: Community Forums
183: Community Forums
184: Photo Gallery
185: Community Forums
186: Downloads
187: Community Forums
188: Community Forums
189: Community Forums
190: Community Forums
191: Photo Gallery
192: Community Forums
193: Community Forums
194: Community Forums
195: Community Forums
196: Community Forums
197: Community Forums
198: Community Forums
199: Community Forums
200: Community Forums
201: Community Forums
202: Community Forums
203: Community Forums
204: Community Forums
205: Community Forums
206: Community Forums
207: Community Forums
208: Community Forums
209: Photo Gallery
210: Community Forums
211: Community Forums
212: Community Forums
213: Community Forums
214: Community Forums
215: Photo Gallery
216: Community Forums
217: Photo Gallery
218: Community Forums
219: Community Forums
220: Community Forums
221: Community Forums
222: Community Forums
223: Community Forums
224: Community Forums
225: Community Forums
226: Community Forums
227: Community Forums
228: Community Forums
229: Community Forums
230: Community Forums
231: Community Forums
232: Community Forums
233: Community Forums
234: Community Forums
235: Community Forums
236: Community Forums
237: Photo Gallery

Staff Online:

No staff members are online!
M47 Question
The AFV ASSOCIATION was formed in 1964 to support the thoughts and research of all those interested in Armored Fighting Vehicles and related topics, such as AFV drawings. The emphasis has always been on sharing information and communicating with other members of similar interests; e.g. German armor, Japanese AFVs, or whatever.
Post new topic    Reply to topic    Printer Friendly Page     Forum Index ›  AFV News Discussion Board

View previous topic :: View next topic  
Author Message
MarkHolloway
Power User

Offline Offline
Joined: Apr 07, 2006
Posts: 2054
Location: Beatty, Nevada
PostPosted: Sun Apr 09, 2006 5:36 am
Post subject: M47 Question

The first tank I ever got on was an M47. Happened at the Motor Pool at the then Selfridge AFB near Detroit where my dad was the NCOIC. Was probably around 1957 or 1958. I assume it was there for some sort of USAF compatability testing. Anyway, I have, what I think, is a pretty vivid memory of the occasion even though I was probably 4 years old. I remember getting in the turret and my dad going to the driver's compartment and starting the engine. After he shut it down he said,"I only started one of the engines". Was there ever a twin-engined M47? Even a prototype? Or do I remember this wrong? Neutral

_________________
"TUMBLEWEED"
Back to top
View user's profile Send e-mail Photo Gallery
Maple_Leaf_Eh
Power User

Offline Offline
Joined: Jan 23, 2006
Posts: 517

PostPosted: Sun Apr 09, 2006 12:28 pm
Post subject: Re: M47 Question

'weed:

I'm wondering if he ran the auxilliary generator instead of the main engine. Tanks have big engines with a lot of mass to spin and get started. The story about the M3 Grant was the motor had to be turned for x seconds to spread the lube oil throughout before firing the cylinders. That kind of draw on the electrical system would need either a whole lot of heavy big wet cell batteries or some sort of chorehorse to generate the current.

Any M48 dogs on the list to help out?
Back to top
View user's profile
Doug_Kibbey
Power User

Offline Offline
Joined: Jan 22, 2006
Posts: 4632
Location: The Great Satan
PostPosted: Sun Apr 09, 2006 12:49 pm
Post subject: Re: M47 Question

I did my AIT on 48's...we'd just git it and go...no fancy procedures. Used to idle in for maybe 20 seconds before going anywhere, other than that, nuthin' special.

M47's only had one main engine (this is what Jay Leno has in his "Blastolene Special" car...though seriously modified). I don't recall an aux engine on any of the Patton series of tanks.
Back to top
View user's profile Visit poster's website Photo Gallery
oldtop
Power User

Offline Offline
Joined: Mar 16, 2006
Posts: 70

PostPosted: Sun Apr 09, 2006 1:02 pm
Post subject: Re: M47 Question

The reason you turned the M3 med tank engine over was because it was powered by a "radial engine" you kicked the engine over with the mag switch on off to pump out the built up oil in the lower cylinders and pervent "hydrostatic lock", if you fired-up the engine with the oil in the cylinders you will break the crankshaft and/or rip the cyliners/"jugs" from the crankcase and get what mechs called a "dancing jug"..remember you can't compress a liquid.
..Ever seen picture of aircraft crews turning over their aircraft's engines over by pulling through the props by hand before starting them...same reason. You did the same test on the old 1790 "gaser V-12s.."hydrostatic test"
1. master switch on.
2. mag switch to "off".
3. squeeze start switch lever to on, kick over for 5-6 sec.
4. mag switch to "both"
5. squeeze both start and "boost" levers together
6. pump "wobble pump" like crazy and hope for a cough and roar, if it was a 1790AVSI you pumped even harder.
Back to top
View user's profile
oldtop
Power User

Offline Offline
Joined: Mar 16, 2006
Posts: 70

PostPosted: Sun Apr 09, 2006 1:30 pm
Post subject: Re: M47 Question

The M47 had a 2 cyliner (A41) auxiliary generator (located on the right side of the engine compartment ) as did the M48s up till they were dieselized M48A3, that where the space for the over sized fuel tanks came from in the M48A3s engine compartments. The aux gen was called the "little joe", its cooling airstrem from the engine housing was equipped with a baffle that you engage to devert the heated air to the main engine compartment to heat up the engine before starting. the a41 generator could be started from the drivers compartment or you can "pull start" that bitch by hand. Oh ya the M103 and A1 also had the same thing.
Back to top
View user's profile
Maple_Leaf_Eh
Power User

Offline Offline
Joined: Jan 23, 2006
Posts: 517

PostPosted: Sun Apr 09, 2006 4:33 pm
Post subject: Re: M47 Question

- oldtop
The reason you turned the M3 med tank engine over was because it was powered by a "radial engine" .... Ever seen picture of aircraft crews turning over their aircraft's engines over by pulling through the props by hand before starting them...


That is what I was getting around to saying, without getting off topic on the particular post.

As for auxilliary engines, does anyone recognize the nickname, 'chorehorse' in connection to AFVs, or am I thinking about little generators?
Back to top
View user's profile
Display posts from previous:   
Post new topic    Reply to topic    Printer Friendly Page    Forum Index ›  AFV News Discussion Board
Page 1 of 1
All times are GMT - 6 Hours



Jump to:  


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum