Question on F2, F3, F7s on B&M

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SSW9389
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Re: Question on F2, F3, F7s on B&M

Post by SSW9389 » Sat Nov 06, 2010 9:23 am

Note the first three B&M F7As have sequential EMD Serial Numbers, and the first three were on consecutive EMD order numbers. Mr. Kristopans who created the linked website used EMD records for his data.

http://community-1.webtv.net/ajkristopa ... page3.html

8476-8477 03/49 (E1173)
Boston & Maine 4266-4267

8478 03/49 (E1174)
Boston & Maine 4265

9932 10/49 (89930 sold on 6059)
demo 930 to Boston & Maine 4268

12303-12304 07/50 (6138)
Boston & Maine 4265B-4266B

12382-12383 11/50 (6150)
Boston & Maine 4267B-4268B

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SSW921
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Re: Question on F2, F3, F7s on B&M

Post by SSW921 » Wed Aug 21, 2019 5:58 pm

EMD F7A 930 was built as a high altitude test unit for the Engineering Department in March 1949.

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Re: Question on F2, F3, F7s on B&M

Post by b&m 1566 » Fri Sep 06, 2019 6:43 pm

I just recently learned about that, if I recall it was tested on the Rio Grande, then after a couple of months, it was sent back to EMD. From there it was painted up to match the CBQ livery and sent to Chicago Railroad Fair of 1949. When that was done 930 was returned to EMD and purchased by the B&M in October(?) of 49. It was cleaned up, re-engined, re-numbered and painted into the B&M livery.

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Re: Question on F2, F3, F7s on B&M

Post by SSW921 » Thu Sep 26, 2019 12:50 pm

I haven't seen any source saying it was reengined. The 1959 EMD Product Data shows a 16-567B block with a serial number that dates to March 1949.
Last edited by MEC407 on Thu Sep 26, 2019 1:55 pm, edited 1 time in total.
Reason: unnecessary quoting

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Re: Question on F2, F3, F7s on B&M

Post by CSRR573 » Sun Oct 06, 2019 8:08 pm

If you look at the pilots of 4266 and 4265 compared to 4266, you'll notice the pilots are different too
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Re: Question on F2, F3, F7s on B&M

Post by bmcdr » Sun Oct 06, 2019 8:55 pm

What differences are you talking about? Both the 4265 and 66 were identical, when 4266 was re-habbed and painted in the so-called 'Blue Dip" in August 1969, there was a lot of body damage including a rotted out number indicator, missing stainless grille section on the Engineers side, and missing removable panel below the front coupler. A replacement number indicator was poorly welded on, the missing grille was replaced with "chicken wire" and the front removable panel was replaced with a solid piece of steel that was welded across the bottom of the pilot. That is the only difference......solid bottom as opposed to having a removable panel, other than that modification, the 4265 - 4267 were identical.
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Re: Question on F2, F3, F7s on B&M

Post by arthur d. » Mon Oct 07, 2019 4:25 pm

Probably a typo where it was meant to suggest comparing the pilots of 4265, 4266, and 4268

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Re: Question on F2, F3, F7s on B&M

Post by b&m 1566 » Mon Oct 14, 2019 4:23 pm

SSW921 wrote:
Thu Sep 26, 2019 12:50 pm
I haven't seen any source saying it was reengined. The 1959 EMD Product Data shows a 16-567B block with a serial number that dates to March 1949.
Of course I can't find it now, I've tried looking. I suppose its possible I'm getting my info twisted, it certainly wouldn't be the first and I'm willing to bank on that being the case this time.

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Re: Question on F2, F3, F7s on B&M

Post by urrengr2003 » Sun Oct 20, 2019 9:29 pm

Last year at North Conway observed an F-unit with the left side front porthole set back approximatel 1/2 the width of the porthole with that of the right side port hole. Have worked on hundreds of F-units in 42 yeras of engine service and never noticed this on other units. My recollection is that both front porthole windows were centered exactly where the main resevoir discharge pipe went vertical up into the engine room ceiling on its way to the intercooler. On the outside looking looking thru the windows, the discharge pipe was centered in the opposite side window. The B&M unit at North Conway had the left window located to the rear of the unit far enough that it did not backlight the main resevoir discharge pipe. Is this unusual or is it a B&M standard?

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