Unknown Engine dug out from Japanese field
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These metal fragments are still unknown, I would like to know where these came from. (1)
Attachments
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- #26
These metal fragments are still unknown, I would like to know where these came from. (2)
Attachments
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- #27
As I had mentioned that these are the engine valves also seen in the two last diagrams posted above. Judging by the shape of the bottom surfaces of the front round heads, one of them is the exhaust valve while the second valve is the suction one.
PWR4360-59B
Senior Airman
- 379
- May 27, 2008
So you are saying with the master rod included there are 7 rods per throw? I knew for sure that it was not from a 3350, wrong style of rods.
I was guessing it was an R-1830 but its just a guess, I'd have to study a bit more. Parts of a Japanese engine could look very similar to American ones
I'm sure they copied them alot. Looks like Shinpachi has it figured out.
I was guessing it was an R-1830 but its just a guess, I'd have to study a bit more. Parts of a Japanese engine could look very similar to American ones
I'm sure they copied them alot. Looks like Shinpachi has it figured out.
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MiTasol
1st Lieutenant
1 2 (1) and 1 2 (3) is a vibrator ignition coil used to provide a "shower of sparks" during engine start. It is powered off the starter circuit
These two are small pumps - could be de-icer or similar, as they look too small for fuel or hyraulic pumps
MiTasol
1st Lieutenant
Beautiful drawings Shinpachi. I wish I had your talent.
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MiTasol
1st Lieutenant
The part on the left is part of the engine casing, probably off the rear case, that includes the drive shaft for the part on the right. The part on the right appears to be a small hydraulic pump or similar. Maybe water/meth pump? Or a gun synchronizer?
The fabric substance is probably the remains of a gasket.
I would suggest that you look for good clear photos of all the likely engines suggested by Shinpachi and try and locate the part on the engine and come back to the site then. Apart from Shinpachi there are not many people who are highly knowledgeable about Japanese engines but the basics of all engines are similar and all countries followed similar conventions in design so even someone with a good hands on knowledge of US/British/European knowledge of engines will be able to identify most items.
You must remember that an Homare "x" and Homare "y" will have many differences so if the part is not on the "x" it may be on the "y"
The picture below comes from this book and the English translation was graciously provided by Shinpachi.
The part in post 35 may be the item arrowed if the engine is a Homare 21. The distinctive domed nut is often used on hydraulic pumps and injection pumps to cover and lock the pressure regulator adjustment
MiTasol
1st Lieutenant
This one appears to be a transmitter that drives a cockpit instrument. There appears to be writing on it - check the other two connections as well and please provide translations.
Nakajima Mk 1 hydraulic pump
Source: Type 100 heavy bomber (Ki-49 Helen) manual
Manual for operating Type 100, heavy bomber with drawings by Army Air headquarters, August 1941. Report No. 15n(10), USSBS Index Section 2 - 国立国会図書館デジタルコレクション
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Thank you very much Mr. Shinpachi, I will be very much appreciate with those infos.
Is there any link for book which includes about Nakajima's engine I can look of?
