Performance Data.....Old Engine

4930s · Post by **4930s** » Wed Mar 07, 2007 3:04 pm

Hello Folks,

I'm searching for some performance figures for the Pratt & Whitney 1830 Radial engine. this egine was used on the Canso or PBY aircraft, the DC3 utilized these engines as well i do believe.

Im looking for any info anyone can give me, Power settings for Take off, Climb, and long range cruse settings. and most importantly is the fuel burns for these corrosponding power settings.

If anyone can provide this info or even point me in the direction of were I can find it myself I would greatly appreciate it.

Cheers

W5 · Post by W5 » Wed Mar 07, 2007 4:52 pm

Unfortunately I no longer have any of the manuals, as I donated them to various vintage airplane groups and museums.

My guess is that several museum libraries will have the information that you are looking for.

http://en.wikipedia.org/wiki/Pratt_&_Whitney_R-1830

http://www.aircraftresourcecenter.com/A ... alk505.htm

http://www.centennialofflight.gov/essay ... Aero10.htm

http://www.aviation-history.com/engines/pr-1937.htm

twotter · Post by **twotter** » Thu Mar 08, 2007 4:41 am

Ask Cat Driver, he probably knows them without a manual..

1000 HP · Post by **1000 HP** » Thu Mar 08, 2007 7:01 am

I think the DC-3 burned 100 GPH in cruise. I donated my C-47 to a museum without engines (OK, I sold it

)

Cat Driver · Post by **Cat Driver** » Thu Mar 08, 2007 8:56 am

If you were burning 100 GPH in cruise you forgot to reduce from climb power settings.......

BD8 · Post by **BD8** » Thu Mar 08, 2007 1:42 pm

I think I may have some info......... Check your PM's

Pencil Driver · Post by **Pencil Driver** » Fri Mar 09, 2007 9:17 pm

The 1200 hp 1830-92 was the most commonly used engine on these two planes, but keep in mind Pratt & Whitney also made the 1830-94 which had a two stage blower and larger cooling fins, enabling it to produce 1360 hp. Not bad for an engine originally designed for 750 horses.

The 94 was used on DC-3's. As for the Canso, I'm not sure. The stats you're looking for would be different for this engine.

Cat Driver · Post by **Cat Driver** » Fri Mar 09, 2007 9:43 pm

We had a PBY with the dash 94's on it.

52 inches MP and 2800 RPM produced the rated power of 1350 HP.

The 1830-94 is easy to identify as the mags are mounted on the front of the engine on top of the nose case.

Really made the PBY get up and go on take off and climb...

..it is now privately owned by a guy in Texas.

Pencil Driver · Post by **Pencil Driver** » Fri Mar 09, 2007 9:57 pm

Right- 1350 hp my mistake. Heard one mechanic say they were a "maintenace nightmare". Not sure why.

Also TC only alllowed each engine 800 hours on the PBY. Their wisdom and reasoning- they got more abuse on the water. And they didn't on a 3 ?

Someone's flying a desk with the chair facing the wall.

Cat Driver · Post by **Cat Driver** » Fri Mar 09, 2007 10:19 pm

The 1830-94 was a very good engine and we had no more problems with it than the 92's on both the PBY and the DC3, they were 1200 hours TBO same as the -92. Actually I prefer working on the 94...especially the mags.

There was an 800 hour TBO on the 1830 when used as water bombers due to the high take off and landing cycles.

P&W made a real winner with the 1830 they are very reliable just like the 985.

When Douglas decided to make the Super Three and put the Wright 1820 in them that was another animal all together.

Siddley Hawker · Post by **Siddley Hawker** » Sat Mar 10, 2007 6:26 pm

We used to swap engines back and forth between the DC-3 and Canso, and I seem to remember the TBO on both being 1000 hours. (This was in the 1960's). Ours were so-called super 92's which was, I understand, a 92 with 94 cylinders. Power output was the same as a straight 92, but you could pull T/O and METO power longer, which was great with the DC-3 on skis. Quick way to tell which engine was which was on the DC-3, with the straight 92 the cowl flaps went all the way around the cowling, while with the super 92 the cowl flaps were on the bottom half only.

Cat Driver · Post by **Cat Driver** » Sat Mar 10, 2007 6:50 pm

Jeses Siddley, you must be real old to know all that stuff?

But your memory is sure accurate!

Siddley Hawker · Post by **Siddley Hawker** » Sat Mar 10, 2007 8:16 pm

Cat Driver wrote:
But your memory is sure accurate!

Yeah Cat, but don't ask me what the heck I had for breakfast.