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IH history re: B C

(quoted from post at 21:36:11 11/29/19) http://www.tractordata.com/farm-tractors/tractor-brands/farmall/farmall-tractors.html
Click to expand...

Interesting in the HP ratings that the A shows 17 horse and the B shows 20 horse. I was under the impression they were the same engine??

Also wonder why the BN is not listed or is it just considered a sub-group of the B?

Ken in NY
 
Take tractordata information with a grain of salt. It's not always 100% correct. If you want real data look up the Nebraska Tests for the individual tractors.

B and BN are considered the same tractor.

A and B/BN were manufactured until 1947, when the Super A and C were introduced to replace them.
 
(quoted from post at 11:07:31 11/30/19) A and B gasoline 1939 Nebraska tractor tests show A 16.86 HP. B 16.82 HP. C 19.91 HP, SC 22.92 HP.
Click to expand...

Well the 0.04 difference in HP between the A and B in the 1934 test could be just caused by how each one was broke in or manufacturing tolerances. Or even if two different dynometers were used or air temps on days of testing!
 
If my post is the one in question I didn't post very well. A and B tested in 39 and I failed to put dates on the others.
 
The BN is available by the link on the B's page (under variants).

The difference is due to how the software is calculating HP for the overview page. It's taking the advertised PTO figure for the A, versus the tested belt figure for the B.
 
There's direct links on the "Tests" page on EVERY tractor on TractorData, and on every fuel variation.
The hp listed on the main page on TractorData is in every situation the same numbers I've seen on the
Ndbraska test results.
I've heard this "Melarke" about "TractorData is Wrong, it's worthless" since the first day I came back to
this forum after leaving for ten years. There's a LOT of wrong information on this website but it's
nothing to do with TractorData!
 
I never said it was worthless, I said it wasn't always 100% correct. BIG difference.

There are literally THOUSANDS of tractors listed on that site. A few years ago it was horrible. Farmall 756 being listed as a ~100HP tractor, for example. That was several years ago. It's much better now, but past performance has sown the seeds of doubt. Trust but verify.
 
Just as I wouldn't claim to be correct every time, also wouldn't claim tractor data is every time. One of some I remember from tractor data is a 54 Louisville SM listed when they stopped in 53. Shows some tractors negative ground when they were positive. Could keep going but what's the use.
 
Not "they" is me. Just me.

You are correct, the last Louisville serial number should be labeled as a final number, not of the start of '54. I'll get it fixed tonight when I got home from work.
 
May want to check out the start of 53 SM at Rock Island.
Serial 12516 was maybe a diesel SM of some type as the first completed in 53. Best I can figure out 12919 was the first SMD that maybe didn't get completed until 53. But the rest of SM that were not diesel started at serial number 21074 according to IH records. Quite a difference in starting numbers when the highest percent are looking up non diesel SM. For some reason SMD builds stalled at the end of 52 and by first built in 2- 1953 had jumped to serial 27711. IH records show SMD 12919 being the first built from 9-52 to 1-53. Whatever is correct have looked at enough 53 non diesel tractors to know starting number was higher than 12516. Also enough 52 to know they were built later than 12516.
 
Thanks. Both Guy Fay's Farmall Letter Series book and Robert Pripp's Farmall Tractors book used those serial number charts, but they don't match what shows up in the records from the historical society.
 
As a note, at a red power round up in Wisconsin a room with persons to answer questions about IH records or other questions was setup. Didn't get to talk to Guy Fay but after questioning another rep he admitted it needed looked into about the 53 starting serial number for most or maybe all except one rock island SM. Don't know if I helped or confused things. Thanks
 
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