2020.08.12 Tractor Pic

kcm.MN

Well-known Member
Location
NW Minnesota
1940 Oliver 80 Row Crop
Puzzle: https://jigex.com/VNs6

mvphoto60145.jpg
 
I didn't realize Oliver, early on, used a four cylinder engine. I wonder what precipitated the change to the six cylinder? It's always intrigued me that where and when most others were using a four cylinder, Oliver used a six, in all but the smallest of tractors.
 
Seems like I remember reading that they made about 5 of those with diesel engines, and some guy found 1 in a junkyard and restored it.
 
When I was a kid, our neighbor across the road had one just like that, only with rubber in front and skeleton wheels in back. I don't know if there was a detent of some sort, but on his the crank always was upright instead of hanging down like that one.

He also owned the neighborhood threshing machine and ran it with the Oliver.
 
I would guess the customers really appreciated the more quiet engine, compared to the bark
of a four cylinder. The car and truck industry pretty much dropped the 4 cylinder in 1929,
so the engineers and forging companies had about 5 years of experience to develop good crankshafts. A six cylinder is prone to vibration failure, unless steps are taken. Usually
a crankshaft dampener did the trick. Both IHC and Oliver came out with 6 cylinders in 1935.
My dad's '47 Massey 44-6 had a Chrysler Six.
 

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