Farmall B and BN

calcubman · May 3, 2014

ok, heres my situation, i accuired 3 farmall B /BN's
first one has a tag model BN but it has the wide
rear axle with a single front wheel, the second is
the excact same but tag is model B, the 3rd one has
no tag but the rear axle is narrower than the other
two. what is a true B and a true BN. first picture
tag model is BN. second tractor is same as first
picture with tag model B, the second picture is
narrower no tag.

calcubman · May 3, 2014

this picture is the narrow rear axle with no tag.
my assumtion is
the tractor with the BN tag is a B ,tag plate seat mount may have been taken off of a actual BN.

ericlb · May 3, 2014

only one pic posted, but this one looks to be a regular B

ericlb · May 3, 2014

this one is kind of hard from the angle, but i believe it is a bn, there is a member on the farmall forum who can give you the actual axle measurements of the 2 to confirm before your buy

calcubman · May 3, 2014

i posted second pic in reply, that is what i thought also,

calcubman · May 3, 2014

all three were givin to me free, i am just trying to figure out what actual models i have.

ericlb · May 3, 2014

wow! id love to get a deal like that, id take some pictures of the rears of all the tractors and maybe a couple 3/4 of the rear and sides and put them over on the farmall forum they'll tell you exactly what you have on all 3,

Super Trucker · May 3, 2014

The easiest way to tell is there is a 3"gap between the seat bracket and fender on a B. There is only a 5 " overall difference in the two.

calcubman · May 3, 2014

thats what i will do. thanks , irepost on the results.

NNP · May 3, 2014

measure between the inner faces of the lower final drive cases.
(right where the sides of the drawbar attach)
On my BN, this measurement is 4 feet.

willie in mn · May 3, 2014

While you have your measuring tape out:
Model A - axle extension on right side, 18" from diff case to drop box. No extension on left side.
Wide front only. Seat bracket against right fender.
Model BN - right & left axle extension 18", same both sides. Originally came with single front wheel. Seat bracket same location as A.

Model B - right & left axle extensions 22", same both sides. Originally dual narrow front wheels.
Seat bracket 4" gap from fender.

Of course, previous owners may have made some changes over the past 60-70 years.

Willie

Shetland Sheepdog · May 3, 2014

Not to contradict, but BN tractors, typically, came with dual wheel narrow front in this area! (New England) I don't recollect any with single front wheel!

Hendrik · May 5, 2014

Going by the relative position of seat support and fender, I'd say this is a BN. The odd thing is there seem to be spacers between the rear axle and the wheel centers, making the range of wheel tread of this tractor equal to that of a B.

mkirsch · May 5, 2014

(quoted from post at 00:52:59 05/05/14) Going by the relative position of seat support and fender, I'd say this is a BN. The odd thing is there seem to be spacers between the rear axle and the wheel centers, making the range of wheel tread of this tractor equal to that of a B.

There are definitely spacers on that one.

Those spacers look homemade to me. Square? Someone welded some flanges to some box tubing. It was customized to cultivate something.

The easy telltale sign of a BN is if the right seat bracket is up against the fender. Of course the tractor has to have fenders...

Also keep in mind that the seat supports could have been changed out, so the serial number tag may not be original.

Farmall B and BN

calcubman

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calcubman

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ericlb

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ericlb

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calcubman

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calcubman

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ericlb

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Super Trucker

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calcubman

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NNP

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willie in mn

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Shetland Sheepdog

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Hendrik

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mkirsch

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