±Recent Visitors

Recent Visitors to Com-Central!

±User Info-big


Welcome Anonymous

Nickname
Password

Membership:
Latest: cgsimpson
New Today: 0
New Yesterday: 0
Overall: 6645

People Online:
Members: 0
Visitors: 558
Total: 558
Who Is Where:
 Visitors:
01: Photo Gallery
02: Community Forums
03: Community Forums
04: Community Forums
05: Community Forums
06: Photo Gallery
07: Home
08: Home
09: Photo Gallery
10: Community Forums
11: Community Forums
12: Your Account
13: Photo Gallery
14: Community Forums
15: Community Forums
16: Community Forums
17: Community Forums
18: Community Forums
19: Community Forums
20: Community Forums
21: Home
22: Photo Gallery
23: Community Forums
24: Community Forums
25: Photo Gallery
26: Community Forums
27: Community Forums
28: Member Screenshots
29: Photo Gallery
30: Community Forums
31: Community Forums
32: Photo Gallery
33: Community Forums
34: Community Forums
35: Photo Gallery
36: Community Forums
37: Community Forums
38: Community Forums
39: Community Forums
40: Photo Gallery
41: Downloads
42: Community Forums
43: Community Forums
44: Community Forums
45: Community Forums
46: Statistics
47: Community Forums
48: Community Forums
49: Home
50: Photo Gallery
51: Statistics
52: Photo Gallery
53: Community Forums
54: Member Screenshots
55: CPGlang
56: Home
57: Photo Gallery
58: Community Forums
59: Home
60: Photo Gallery
61: Home
62: Community Forums
63: Member Screenshots
64: Home
65: Community Forums
66: Community Forums
67: Home
68: Member Screenshots
69: Community Forums
70: Community Forums
71: Home
72: Community Forums
73: Community Forums
74: Home
75: Community Forums
76: Community Forums
77: Photo Gallery
78: Community Forums
79: Community Forums
80: Downloads
81: Community Forums
82: Community Forums
83: Community Forums
84: Downloads
85: Photo Gallery
86: Home
87: Home
88: Community Forums
89: Community Forums
90: Home
91: Community Forums
92: Community Forums
93: Downloads
94: Home
95: Community Forums
96: Photo Gallery
97: Community Forums
98: Community Forums
99: Home
100: Community Forums
101: Downloads
102: Photo Gallery
103: Community Forums
104: Home
105: Photo Gallery
106: Your Account
107: Photo Gallery
108: CPGlang
109: Community Forums
110: Community Forums
111: Home
112: Photo Gallery
113: Community Forums
114: Community Forums
115: Community Forums
116: Home
117: Community Forums
118: Community Forums
119: Home
120: Community Forums
121: Community Forums
122: Photo Gallery
123: Community Forums
124: Community Forums
125: Downloads
126: Community Forums
127: Community Forums
128: Community Forums
129: Community Forums
130: Community Forums
131: Community Forums
132: Community Forums
133: Your Account
134: Community Forums
135: Community Forums
136: Community Forums
137: Community Forums
138: Community Forums
139: Community Forums
140: Community Forums
141: Community Forums
142: Community Forums
143: Community Forums
144: Home
145: Home
146: Community Forums
147: Photo Gallery
148: Community Forums
149: Community Forums
150: Community Forums
151: Community Forums
152: Photo Gallery
153: Community Forums
154: Community Forums
155: Community Forums
156: Your Account
157: Photo Gallery
158: Your Account
159: Community Forums
160: Community Forums
161: Community Forums
162: Community Forums
163: Photo Gallery
164: Community Forums
165: News Archive
166: Community Forums
167: Home
168: Community Forums
169: Home
170: Community Forums
171: Community Forums
172: Community Forums
173: Your Account
174: Community Forums
175: Your Account
176: Community Forums
177: Photo Gallery
178: Community Forums
179: Community Forums
180: Community Forums
181: CPGlang
182: Community Forums
183: Community Forums
184: Community Forums
185: Photo Gallery
186: Community Forums
187: Photo Gallery
188: Photo Gallery
189: Community Forums
190: Community Forums
191: Community Forums
192: Photo Gallery
193: Photo Gallery
194: Community Forums
195: Community Forums
196: Community Forums
197: Community Forums
198: Community Forums
199: Photo Gallery
200: Photo Gallery
201: Home
202: Community Forums
203: Community Forums
204: Downloads
205: Community Forums
206: Community Forums
207: Community Forums
208: Home
209: Community Forums
210: Community Forums
211: Community Forums
212: Community Forums
213: Community Forums
214: Community Forums
215: Community Forums
216: Community Forums
217: Member Screenshots
218: Downloads
219: Photo Gallery
220: Community Forums
221: Photo Gallery
222: Community Forums
223: Community Forums
224: Community Forums
225: Your Account
226: Community Forums
227: Community Forums
228: Community Forums
229: Community Forums
230: Member Screenshots
231: Community Forums
232: Community Forums
233: Community Forums
234: Photo Gallery
235: Photo Gallery
236: Community Forums
237: Community Forums
238: CPGlang
239: Community Forums
240: Community Forums
241: Downloads
242: Photo Gallery
243: Photo Gallery
244: Community Forums
245: Photo Gallery
246: Community Forums
247: CPGlang
248: Statistics
249: Photo Gallery
250: Downloads
251: Photo Gallery
252: Home
253: News Archive
254: Community Forums
255: Photo Gallery
256: Photo Gallery
257: Photo Gallery
258: Home
259: Photo Gallery
260: Photo Gallery
261: Community Forums
262: Community Forums
263: Downloads
264: Community Forums
265: Community Forums
266: Photo Gallery
267: Community Forums
268: Community Forums
269: Photo Gallery
270: Photo Gallery
271: Community Forums
272: CPGlang
273: Community Forums
274: Community Forums
275: Community Forums
276: Community Forums
277: Community Forums
278: Photo Gallery
279: Community Forums
280: Community Forums
281: Community Forums
282: Community Forums
283: Photo Gallery
284: Downloads
285: Home
286: Photo Gallery
287: Home
288: Community Forums
289: Community Forums
290: Community Forums
291: Community Forums
292: Community Forums
293: Community Forums
294: Community Forums
295: Community Forums
296: Community Forums
297: Photo Gallery
298: Photo Gallery
299: Downloads
300: Community Forums
301: Community Forums
302: Statistics
303: Downloads
304: Home
305: Community Forums
306: Your Account
307: Community Forums
308: Community Forums
309: Photo Gallery
310: Community Forums
311: Photo Gallery
312: Community Forums
313: Member Screenshots
314: Photo Gallery
315: Community Forums
316: Community Forums
317: Downloads
318: Downloads
319: Community Forums
320: Home
321: Community Forums
322: Community Forums
323: Community Forums
324: Community Forums
325: Community Forums
326: Community Forums
327: Community Forums
328: Photo Gallery
329: Photo Gallery
330: Community Forums
331: Community Forums
332: Downloads
333: Community Forums
334: Community Forums
335: Community Forums
336: Community Forums
337: Your Account
338: Photo Gallery
339: News Archive
340: Community Forums
341: Community Forums
342: Home
343: Community Forums
344: Community Forums
345: Community Forums
346: Photo Gallery
347: Home
348: Community Forums
349: Community Forums
350: Community Forums
351: Community Forums
352: Photo Gallery
353: Community Forums
354: Photo Gallery
355: Community Forums
356: Statistics
357: Photo Gallery
358: Home
359: Photo Gallery
360: Community Forums
361: Photo Gallery
362: Community Forums
363: Community Forums
364: Photo Gallery
365: Photo Gallery
366: Community Forums
367: Photo Gallery
368: Community Forums
369: CPGlang
370: Photo Gallery
371: Downloads
372: Home
373: Home
374: Photo Gallery
375: Community Forums
376: Community Forums
377: Community Forums
378: Your Account
379: Community Forums
380: Photo Gallery
381: Community Forums
382: Home
383: Photo Gallery
384: Home
385: Community Forums
386: Community Forums
387: Community Forums
388: Photo Gallery
389: Home
390: Community Forums
391: Community Forums
392: Community Forums
393: Photo Gallery
394: Community Forums
395: Photo Gallery
396: Community Forums
397: Community Forums
398: Your Account
399: Member Screenshots
400: Community Forums
401: Community Forums
402: Community Forums
403: Community Forums
404: Statistics
405: Community Forums
406: Home
407: Community Forums
408: Home
409: Community Forums
410: Community Forums
411: Photo Gallery
412: Photo Gallery
413: Community Forums
414: Home
415: Community Forums
416: Community Forums
417: Community Forums
418: Community Forums
419: Community Forums
420: Community Forums
421: Community Forums
422: Community Forums
423: Community Forums
424: Community Forums
425: Home
426: Photo Gallery
427: Community Forums
428: Community Forums
429: Community Forums
430: Your Account
431: Photo Gallery
432: Community Forums
433: Photo Gallery
434: Community Forums
435: Home
436: Community Forums
437: Photo Gallery
438: Community Forums
439: Community Forums
440: Home
441: Community Forums
442: Community Forums
443: Community Forums
444: Community Forums
445: Photo Gallery
446: Downloads
447: Community Forums
448: Downloads
449: CPGlang
450: Downloads
451: Community Forums
452: Photo Gallery
453: Community Forums
454: Community Forums
455: Home
456: Community Forums
457: Community Forums
458: Community Forums
459: Community Forums
460: Community Forums
461: Community Forums
462: Community Forums
463: Community Forums
464: Community Forums
465: Community Forums
466: Community Forums
467: Community Forums
468: Community Forums
469: Community Forums
470: Community Forums
471: Community Forums
472: CPGlang
473: Community Forums
474: Your Account
475: Community Forums
476: Photo Gallery
477: Community Forums
478: Home
479: Photo Gallery
480: Photo Gallery
481: Your Account
482: Community Forums
483: Community Forums
484: Downloads
485: Community Forums
486: Community Forums
487: Community Forums
488: Community Forums
489: Home
490: Community Forums
491: Community Forums
492: Community Forums
493: Member Screenshots
494: Community Forums
495: Photo Gallery
496: Community Forums
497: Community Forums
498: Community Forums
499: Photo Gallery
500: Photo Gallery
501: CPGlang
502: Community Forums
503: Photo Gallery
504: Community Forums
505: CPGlang
506: Home
507: Downloads
508: Statistics
509: Photo Gallery
510: Home
511: Community Forums
512: Community Forums
513: Community Forums
514: Photo Gallery
515: Photo Gallery
516: Community Forums
517: Community Forums
518: Community Forums
519: Community Forums
520: Community Forums
521: Community Forums
522: Community Forums
523: Community Forums
524: Community Forums
525: Community Forums
526: Member Screenshots
527: Photo Gallery
528: Your Account
529: Home
530: Community Forums
531: Community Forums
532: Photo Gallery
533: Community Forums
534: Photo Gallery
535: Community Forums
536: Community Forums
537: Community Forums
538: Community Forums
539: Community Forums
540: Community Forums
541: Community Forums
542: Photo Gallery
543: Community Forums
544: Community Forums
545: Community Forums
546: Community Forums
547: Community Forums
548: Community Forums
549: Community Forums
550: Photo Gallery
551: Home
552: Home
553: Community Forums
554: Photo Gallery
555: Photo Gallery
556: Photo Gallery
557: Community Forums
558: Member Screenshots

Staff Online:

No staff members are online!
Bore inspection?
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.
Go to page 1, 2  Next
Post new topic    Reply to topic    Printer Friendly Page     Forum Index ›  AFV News Discussion Board

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

Offline Offline
Joined: Jan 24, 2006
Posts: 87

PostPosted: Wed Mar 07, 2007 10:50 am
Post subject: Bore inspection?

Whats this guy doing?

www.dodmedia.osd.mil/A...06814.JPEG
Back to top
View user's profile
Sabot
Power User

Offline Offline
Joined: Jan 24, 2006
Posts: 380
Location: Kentucky
PostPosted: Wed Mar 07, 2007 11:00 am
Post subject: Re: Bore inspection?

Bore sighting. He looks through a little in-bore device to align the center of the physical gun tube on a boresight panel 1200m down range.

He then uses hand and finger signals to inform the gunner which way to manually move the turret/gun until the crosshairs are at a certain spot on the boresight panel.

The gunner then adjusts his sights until his reticle (crosshairs) are at the exact same spot as the bore sight device.

The old 105mm bore sight device was called the Pye-Watson, the 120mm was an M26E or something along those lines, but many still called it the Pye-Watson.

There's a similar device for the .50 cal called the Anderson Device. It is used to make sure the commander's .50 sight is aligned as well.

There's normally a long red flag attached that is just like an aircraft's "REMOVE BEFORE FLIGHT" tag except it says "REMOVE BEFORE FIRING". There have been several incidents where the crew forgets to remove the Pye-Watson and sends it down range, normally with part of the gun tube and MRS.

_________________
RobG
Back to top
View user's profile AIM Address
Jens_O_Mehner
Power User

Offline Offline
Joined: Jan 24, 2006
Posts: 511
Location: Giessen, Germany
PostPosted: Wed Mar 07, 2007 11:51 am
Post subject: Re: Bore inspection?

Naaww,

that's Jeff checking if there is any rifling left downtube on that peculiar M60... Laughing

Cheers,

Jens O.
Back to top
View user's profile
Dontos
Power User

Offline Offline
Joined: Jan 24, 2006
Posts: 3436
Location: Vine Grove, KY
PostPosted: Wed Mar 07, 2007 1:07 pm
Post subject: Re: Bore inspection?

Here's a personal shot, I took during M1A1 transition (in Germany 1988)



Don
Back to top
View user's profile Send e-mail Visit poster's website AIM Address Yahoo Messenger Photo Gallery
Doug_Kibbey
Power User

Offline Offline
Joined: Jan 23, 2006
Posts: 4678
Location: The Great Satan
PostPosted: Wed Mar 07, 2007 1:23 pm
Post subject: Re: Bore inspection?

'Well, when we used to boresight, we'd used to get oop at 5 o'clock, four hours before the sun went down, then go down to the range and tape two bits o' string across the end o' the moozle and peer through the breech wit' a pair o' binoculars through a ring-shaped deviced centered on the chambere and sight on a distant right angle...say, a patient window at Ireland Army Hospital at Ft. Knox."

"Aye, aye"....

"Now, you try and tell the young people that today....they won't bloody believe ya',"

Back to top
View user's profile Visit poster's website Photo Gallery
bsmart
Power User

Offline Offline
Joined: Jan 23, 2006
Posts: 2523
Location: Central Maryland
PostPosted: Wed Mar 07, 2007 3:13 pm
Post subject: Re: Bore inspection?

You must have been part of the new mekinized army. back in the old days we'd pull a hair from the drag horse on the team and use chawin tabac to hold it in placein the notches on the muzzle

_________________
Bob Smart (bsmart@xecu.net)
Back to top
View user's profile Send e-mail
palic
Power User

Offline Offline
Joined: Mar 03, 2006
Posts: 172

PostPosted: Wed Mar 07, 2007 8:19 pm
Post subject: Re: Bore inspection?

- bsmart
You must have been part of the new mekinized army. back in the old days we'd pull a hair from the drag horse on the team and use chawin tabac to hold it in placein the notches on the muzzle


Yap, definitely that is the way we used to "zero-in" the armament of BMP-1 or BPzV Svatava. Instead "chawin tabac" we used small pieces of magnet, instead "a hair from the drag horse" we used thread ...
There was a metal "diopter" piece – typical shape of German "potato masher" stick grenade to be inserted into gun chamber.... Optic device "L" had to be inserted into the PKT MG muzzle - with red flaggie too.

I did it many, many times before live fire trg as a guy responsible for...everything
Back to top
View user's profile
Dontos
Power User

Offline Offline
Joined: Jan 24, 2006
Posts: 3436
Location: Vine Grove, KY
PostPosted: Wed Mar 07, 2007 11:16 pm
Post subject: Re: Bore inspection?

Here I am, making the 'boresight face', but using a modified 'bail-out' cord, so I can talk to my gunner thru the intercom. No 'gang sign' directions,.....precision boresighting thru positive communication.



Notice my Boresight instructions on front slope,.....I'm doing final comfirmation following completion of the proceedure.

BTW: The string method is for dinosaurs. The 105mm MBD was the 'Pye-Watson'. The 120mm is known as the 'Lensar'(sp?).

Don

_________________
"Gonna hold my breath until Armor returns home..."
Back to top
View user's profile Send e-mail Visit poster's website AIM Address Yahoo Messenger Photo Gallery
Doug_Kibbey
Power User

Offline Offline
Joined: Jan 23, 2006
Posts: 4678
Location: The Great Satan
PostPosted: Wed Mar 07, 2007 11:18 pm
Post subject: Re: Bore inspection?

- Dontos

BTW: The string method is for dinosaurs. Don
Shocked

Now just a gol-durn minute there....that's curmudgeons to you, Buddy! Evil or Very Mad

...and for thems that, by some cruel twist of fate don't recognize the "Four Yorkshiremen", here's the reference:

www.youtube.com/watch?v=Xe1a1wHxTyo



Laughing
Back to top
View user's profile Visit poster's website Photo Gallery
Buq-Buq
Power User

Offline Offline
Joined: Mar 04, 2006
Posts: 86

PostPosted: Thu Mar 08, 2007 1:40 am
Post subject: Re: Bore inspection?

Mr. Kibbey, I have to say that you capped my night.

"I laughed until I stopped."

All them yoooung peeeople . . .

HA!



Mark
Back to top
View user's profile
Sabot
Power User

Offline Offline
Joined: Jan 24, 2006
Posts: 380
Location: Kentucky
PostPosted: Thu Mar 08, 2007 10:56 am
Post subject: Re: Bore inspection?

My first gunnery was in 1985 on M48A5s. Even then we were only using Pye-Watsons, although we were informed of the old string method as field expediant.

_________________
RobG
Back to top
View user's profile AIM Address
Doug_Kibbey
Power User

Offline Offline
Joined: Jan 23, 2006
Posts: 4678
Location: The Great Satan
PostPosted: Thu Mar 08, 2007 12:03 pm
Post subject: Re: Bore inspection?

- Sabot
....we were informed of the old string method as field expediant.


Well, that sounds better than the Jurassic reference! I think.

As of the '70's (or maybe even the '80's, I don't know when the fancy-schmancy optical thingy's were introduced) what y'all are quaintly calling the "old string method" was not "field expedient" it was simply "THE boresight procedure" and the only known way it way it was done. There were a couple of variations of sighting down the chamber from the inside. One involved removing the firing pin mechanism from 90mm's (I believe) and there was also a round template thingy with a female receptacle that could receive the objective end of one side of a binocular that you could stick in the open breech (better method, less squinting) and both had the advantage of letting you just speak to the gunner so he could lay the crosshairs of the string on the selected right angle.

Then the gunner aligns the reticle and you have your rough sights set and you're ready to go to the range and bust some caps for zero.

Joe D. and Rob can clean up an details I've managed to screw up....
Back to top
View user's profile Visit poster's website Photo Gallery
Dontos
Power User

Offline Offline
Joined: Jan 24, 2006
Posts: 3436
Location: Vine Grove, KY
PostPosted: Thu Mar 08, 2007 10:38 pm
Post subject: Re: Bore inspection?

- Doug_Kibbey
- Sabot
....we were informed of the old string method as field expediant.


Well, that sounds better than the Jurassic reference! I think.

As of the '70's (or maybe even the '80's, I don't know when the fancy-schmancy optical thingy's were introduced) what y'all are quaintly calling the "old string method" was not "field expedient" it was simply "THE boresight procedure" and the only known way it way it was done. There were a couple of variations of sighting down the chamber from the inside. One involved removing the firing pin mechanism from 90mm's (I believe) and there was also a round template thingy with a female receptacle that could receive the objective end of one side of a binocular that you could stick in the open breech (better method, less squinting) and both had the advantage of letting you just speak to the gunner so he could lay the crosshairs of the string on the selected right angle.

Then the gunner aligns the reticle and you have your rough sights set and you're ready to go to the range and bust some caps for zero.

Joe D. and Rob can clean up an details I've managed to screw up....


Although I may have stomped on some toes, ( Laughing Laughing Laughing ) I do know the 'string method', and have used it on a couple of occasions. The 'witness marks' on on end of the gun tube ( at 12 & 6 and 3 & 9 o'clock positions ) are the alignment marks for the string.

With the breech closed & the firing pin (firing probe on 120mm breech), use one side of binos (looking thru the firing pic 'hold') and direct the gunner to manually adjust the bore to the desired right angle. Then align the electronic / manual sights. THERE,.....see I know how to do it.

Regards ( "Jedi-Tanker" Mr. Green of CDAT "Computerized, Dumba** Tanker" Cool )
Don
Back to top
View user's profile Send e-mail Visit poster's website AIM Address Yahoo Messenger Photo Gallery
SFC_Jeff_Button
Power User

Offline Offline
Joined: Jan 24, 2006
Posts: 1311
Location: Ft Hood, TX
PostPosted: Fri Mar 09, 2007 12:55 am
Post subject: Re: Bore inspection?

I saw that M48A5's and M60's used Pye-Watsons according to previous posts. I'm assuming that these two M60 barrels had these "tick-marks" at 12, 3, 6, and 9 o-clock for back-up, field expediant, string cross hair markings. Were the strings just simply attached with 100mph tape?



_________________
SFC Jeff Button "High Angle Hell"
Back to top
View user's profile Send e-mail Photo Gallery
Doug_Kibbey
Power User

Offline Offline
Joined: Jan 23, 2006
Posts: 4678
Location: The Great Satan
PostPosted: Fri Mar 09, 2007 1:10 am
Post subject: Re: Bore inspection?

- SFC_Jeff_Button
I saw that M48A5's and M60's used Pye-Watsons according to previous posts. I'm assuming that these two M60 barrels had these "tick-marks" at 12, 3, 6, and 9 o-clock for back-up, field expediant, string cross hair markings. Were the strings just simply attached with 100mph tape?


Jeff,

Yep, or spit (if using thread) , or gum, or tied on with another piece of string around the circumference...whatever. Just so's you get the crosshairs where they needs ta' be. Pre-Pye-Watson or what-have-you, this was not the "backup method", but the PRIMARY method (for a certain category of tanker known pejoratively to certain callous, insensitive Jedi-Tankers as "dinosaurs") Laughing

D.
Back to top
View user's profile Visit poster's website Photo Gallery
Display posts from previous:   
Post new topic    Reply to topic    Printer Friendly Page    Forum Index ›  AFV News Discussion Board
Page 1 of 2
All times are GMT - 6 Hours
Go to page 1, 2  Next



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