Ohh I’m kind of exited Japanese 2 stroke??
- Thread starter Thepaetsguy
- Start date
Absolutely they are going to scold you…
(Poorly) distilled fuel mixed with probably crude or machine grease. Spits a lot of it back out of the intake and they are a hassle to get running.
I thought the base gasket on mine was bad until I looked and it was directly shooting a big mist of the carburetor.
https://global.honda/en/heritage/episodes/1946encounter.html
(Poorly) distilled fuel mixed with probably crude or machine grease. Spits a lot of it back out of the intake and they are a hassle to get running.
I thought the base gasket on mine was bad until I looked and it was directly shooting a big mist of the carburetor.
https://global.honda/en/heritage/episodes/1946encounter.html
No idea of the flange size, but it looks big.
https://www.ebay.com/itm/3759983138...InF02nLTEeIv6YtGBd5GpQMFs=|tkp:Bk9SR5yfu_WMZg
https://www.ebay.com/itm/3759983138...InF02nLTEeIv6YtGBd5GpQMFs=|tkp:Bk9SR5yfu_WMZg
This is a 100cc engine not a 50cc engine. The generator engine powered the type 94-96 Japanese radios it was all Japanese military secrets. Tanaka does not mean tohatsu or even tied to Takata it was related to MANY MANY company’s back then.
The Betty bomber APU has a destinct ”aircraft APU tag” mine does not have an aircraft APU tag it has a “kd-type B j-device power unit“ specific tag.
Kd type-B is a car carburetor from the 20’s
The only mention of J-device in Japan is 1941 military secret torpedo. Not powered by a 100cc engine.
AI scans 1000’s of pages in less then 1 minute and rest assured it believes no two speed jockey shift transmission was ever built in Japan in the 40‘s
I believe this whole deal to be one big Japanese “military secret” that probably died with the war..
We will almost guaranteed NEVER know what this powered.
The Betty bomber APU has a destinct ”aircraft APU tag” mine does not have an aircraft APU tag it has a “kd-type B j-device power unit“ specific tag.
Kd type-B is a car carburetor from the 20’s
The only mention of J-device in Japan is 1941 military secret torpedo. Not powered by a 100cc engine.
AI scans 1000’s of pages in less then 1 minute and rest assured it believes no two speed jockey shift transmission was ever built in Japan in the 40‘s
I believe this whole deal to be one big Japanese “military secret” that probably died with the war..
We will almost guaranteed NEVER know what this powered.
Wow! Just stumbled upon this post amazing work/ research ! Tkx for sharing with us @Thepaetsguy
picture #1 is the flywheel on my Japanese 1941 two stroke.
Picture #2 is from an evinrude..
The same arrow stamped on both flywheels to show the direction of rotation for starting/running. No info seems to exist on a Japanese copy of an evinrude.
At this point I’m sure I’ve found a direct Japanese copy/ripoff of an evinride outboard but how much of a copy? It seems they either made the engine from scratch and used an existing evinrude coil/flywheel. OR they cast out there own copy’s of evinrude parts and even went as far as copying the arrow stamp.
Picture #2 is from an evinrude..
The same arrow stamped on both flywheels to show the direction of rotation for starting/running. No info seems to exist on a Japanese copy of an evinrude.
At this point I’m sure I’ve found a direct Japanese copy/ripoff of an evinride outboard but how much of a copy? It seems they either made the engine from scratch and used an existing evinrude coil/flywheel. OR they cast out there own copy’s of evinrude parts and even went as far as copying the arrow stamp.
OMC-1C stamped on the flywheel of my Japanese engine.
OMC meaning Outboard Marine Cooperation.
A parent company of EvinRude! So the direction of rotation arrow and the OMC stamp + the coil/flywheel matching early EvinRude means in 1941 Japan was about to enter the outboard market with OMC copy’s!
Sidetracked by the war effort??
OMC meaning Outboard Marine Cooperation.
A parent company of EvinRude! So the direction of rotation arrow and the OMC stamp + the coil/flywheel matching early EvinRude means in 1941 Japan was about to enter the outboard market with OMC copy’s!
Sidetracked by the war effort??
The Shoda aircraft (Betty bomber apu) appears to be very very similar to my engine. But with a slight difference in the engine case circled in red. Also circled in green it doesn’t appear the Betty APU has the bronze trumpet for what I believe would be backfire protection? So the engine case itself of these two engines are from a different mold.
Cleaned my flywheel with sandpaper to find four Japanese letters followed by OMC-1C No. 3335 and the OMC direction of rotation arrow. Also on the flywheel a capital T for top followed by two Japanese letters.
My 1941 engine is OMC taken from America to Japan and was stamped with Japanese tags/lettering after it arrived in Japan.
Now what about the matching 1944 type 94 radio generator engine? (picture #5) is it stamped (OMC)??
What about the Japanese Betty bomber engine dated (1945) Is it stamped (OMC)??
Why would Japan make there own molds cast out there own engine cases and flywheels then go back and stamp there own Japanese castings OMC??? My engine has to be the OG taken from America to Japan and copied to make battery chargers and radio generators that would later go on to be used in WW2..
Cleaned my flywheel with sandpaper to find four Japanese letters followed by OMC-1C No. 3335 and the OMC direction of rotation arrow. Also on the flywheel a capital T for top followed by two Japanese letters.
My 1941 engine is OMC taken from America to Japan and was stamped with Japanese tags/lettering after it arrived in Japan.
Now what about the matching 1944 type 94 radio generator engine? (picture #5) is it stamped (OMC)??
What about the Japanese Betty bomber engine dated (1945) Is it stamped (OMC)??
Why would Japan make there own molds cast out there own engine cases and flywheels then go back and stamp there own Japanese castings OMC??? My engine has to be the OG taken from America to Japan and copied to make battery chargers and radio generators that would later go on to be used in WW2..
Who came up with the direction of rotation arrow first? America or japan? The direction of rotation arrow is seen on OMC/evinrude from the 1930’s all the way to my 1941 Japanese engine and is even seen on a much later 1961 example from tokyo engine co ltd…
What is not seen on any other example of these engines is American lettering for OMC and the capital T for timing on the flywheel.
I am now hyper focused on finding the origin of that arrow. If it originated in America then as I thought engines were brought to Japan from America and became the standard for the castings and engines japan would go on to make and use during and after the war.
If I’m adding everything up correctly OMC (Outboard marine company) formed 1929 would be my engine and it was taken to Japan and re-badged as tokyo hatsudoki just 12 years later in 1941??
What is not seen on any other example of these engines is American lettering for OMC and the capital T for timing on the flywheel.
I am now hyper focused on finding the origin of that arrow. If it originated in America then as I thought engines were brought to Japan from America and became the standard for the castings and engines japan would go on to make and use during and after the war.
If I’m adding everything up correctly OMC (Outboard marine company) formed 1929 would be my engine and it was taken to Japan and re-badged as tokyo hatsudoki just 12 years later in 1941??
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