Re: Class 125 air pumps.

El Nehi Wrote:
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> I've seen pictures of several of the Class 125
> engines (later known as K-27s) with two 9 1/2" air
> pumps on them. Can anyone tell me what year they
> got those?

1912, according to the book Dennis O'Berry

> Also Did all of that class get them or
> did some go straight to cross compound pumps?

All of them from the way the entry is worded.

"Additional improvements were gradually made: a second 91/2 inch air pump was added during 1912,"

_The Mudhens, a Photographic History_ pg. 12

since the next change in the list is noted as applied to 6 engines, I would assume this one applied to all.

hank