P&W 1830 question

[Per Bjorkqvist]

Simply one question...P&W Twin Wasp SBG...what aircraft had that version of the -1830?
The engine is located in Sweden and I am interested in helping the owner of it's history.
During WW2 several B-24's landed in Sweden,but this version did not power the B-24 as far as I can see,or am i wrong?
Its is reputadly said that this engine came from a WW2 bomber that landed in Sweden.
Manufacture number is 368 as stamped on the plate.

[mike furline]

The 1830-SG3-G was license built in Sweden.
https://en.wikipedia.org/wiki/Pratt_%26 ... _Twin_Wasp

French/British Boston 1830-S3G
http://www.aviastar.org/air/usa/douglas_db-7.php

[Per Bjorkqvist]

Yes,I know of the licensbuilt engines here in Sweden.
Too bad I can't put in a picture here from the pc, but the plate does very clear say "SBG" as "Engine Model".
Strange because I can't find any subtype named that when searching on it.
And the engine has a US mfg plate for sure,had it been Swedish it would have a dito plate

[Dan K]

Twin-row SBG Wasp was apparently one of the engine types equipping the Douglas DST (Douglas Sleeper Transport), the predecessor to the DC-3. See page 25 of the following link.

http://members.eaavintage.org/wp-conten ... l-1980.pdf


Good luck with your hunt!

[Per Bjorkqvist]

Interesting indeed!
I never heard of the DST before,exciting that the SBG-variant really exists
Apparently a rare variant of the engine!
And then I ask myself how on earth it came to Sweden!
I will certainly keep on digging.
Thanks for responding!

[Dan K]

Interesting indeed!
I never heard of the DST before,exciting that the SBG-variant really exists
Apparently a rare variant of the engine!
And then I ask myself how on earth it came to Sweden!
I will certainly keep on digging.
Thanks for responding!

You are entirely welcome.

It is also quite possible that the SBG engine was installed in early DC-3s as well, I just haven't found any supporting documentation yet.

DC-3 experts: Step in at any time.

[AvroAvian]

Fokker was the sales agent for Douglas from 1933 to 1940 for the DC-2 and DC-3. Some aircraft were built under license by Fokker, but most were built by Douglas and assembled after shipping by Fokker. I believe a couple of the Fokker assembled DC-3s were sold in 1939 to ABA in Sweden, so it is entirely possible that the subject engine is from one of these aircraft.

[Dan K]

Interesting indeed!
I never heard of the DST before,exciting that the SBG-variant really exists
Apparently a rare variant of the engine!
And then I ask myself how on earth it came to Sweden!
I will certainly keep on digging.
Thanks for responding!

You are entirely welcome.

It is also quite possible that the SBG engine was installed in early DC-3s as well, I just haven't found any supporting documentation yet.

DC-3 experts: Step in at any time.

As I guessed, it would seem the SBG engine could also be installed on the DC-3 (note listing of Douglas model DC3A-SBG on page 22 of the link):

http://www.douglasdc3.com/faa/a-669.pdf

The suggestion that the owner's motor is from an ABA DC-3 makes much sense.