JohnBurke

Our 4Y's used QEC R2600's off B-25's. One collective for the upper seven cylinders, and seven short stacks, all sounded like 12 gauge shotguns being rapidly fired, continuously.

I did the jump conversion on Bighorn's 228's.

Airhoss

I just spent 6 days of listening to a pair of 2600’s and yes 12 Ga shot guns going off next to your head is an accurate description!

dustrpilot

I’m assuming an R2600 is basically a twin row 1300?
Years ago, I worked around a R1300 and I remember it being a loud, odd sounding engine.


Sent from my iPhone using Tapatalk

captjns

I forgot the old reliable DH-2…. Great old bird a bit slow with floats but allows the time to melt away while flying a great bird with a great reliable up front.

JohnBurke

No, the R1300 is half of an R2600, and was developed from the R-2600, but much later. The R-2600 was developed 7 years before the R-1300. The R2600 was in use by 1942, and was a widely used radial engine. It was a development from the Wright R-1820. The R2600 began as a design circa 1935, and was in production by 1942. The R2600 was used in single engine aircraft such as the TBM and SB2C, and multi engine aircraft like the A20 and B25. All our engines came from B25's.

The R1300 began development in 1942, and went into production after the second world war, in 1949. It saw use in aircraft like the T-28, as well as the Ayres Thrush, and Sikorsky H19 helicopter.It was not produced in nearly the numbers of the R-2600.

The 4Y originally had 1830's (Pratts), albeit without the turbosupercharging, due to their low altitude operations. Our 4Y's had R2600's (Wrights), with superchargers, although ours were safety wired to the low blower position, with the supercharger clutch controls removed from the cockpit.

R-1300's aren't very common; Pratt 1340's are much more common.