Or they just designed it?

Not sure I would like the torqueing on the airframe of a 4 cyl. for 3D. Not sure about the power curve either. Would be awesome in a warbird though.

Originally Posted by KoleDeRacer

Or they just designed it?

yes,we designed it,
NEXT,TP-150 twin cylinder four stroke engine coming soon.

Now, that looks NICE !

Originally Posted by earlwb

Yes I wonder what they copied to make the engine from too. Yes it does have a similarity to Kolm, Moki, Enya and some others, but it looks somewhat different though too. So I am not sure. There may be another more obscure engine it is copied from.

God i hope they didnt copy moki. Their 4stroke singles run like crap...

We prepared two new aircraft yak54 and pt19, invited the 3D-fly master.
Later, we will upload a better flight and ground test video. With a new muffler and exhaust pipe

Come up with a 40 cc twin 4 stroke with 1/4-32 spark plugs and you will sell a boat load of engines.

Originally Posted by Tailslide

Come up with a 40 cc twin 4 stroke with 1/4-32 spark plugs and you will sell a boat load of engines.

Especially if it looks like that TP-150.

Keep up the good work.......this hobby needs more innovators.

Originally Posted by TorkRollN

Now, that looks NICE !

I bet it sure is going to sound good !

PT-19 ready to fly

Originally Posted by Tailslide

Keep up the good work.......this hobby needs more innovators.

Thank you。
We will develop more displacement four-stroke gasoline engine. Somebody say it is kolm clone, but I've never seen kolm engine, kolm is too expensive, we are poor. I think kavan FK50 is really beautiful, if an engine must give us inspiration, I'd rather be kavan. Moreover, many of the engine cam and push rod in the back. like os ,enya ,magnum,kalt.
solid forged connecting rod, high-silicon aluminum piston, and forged steel valve in pictures.

Nice 4 stroke!
Terrible video. Need some high speed passes and a legitimate hover.

Originally Posted by torqproengine

Thank you。
We will develop more displacement four-stroke gasoline engine. Somebody say it is kolm clone, but I've never seen kolm engine, kolm is too expensive, we are poor. I think kavan FK50 is really beautiful, if an engine must give us inspiration, I'd rather be kavan. Moreover, many of the engine cam and push rod in the back. like os ,enya ,magnum,kalt.
solid forged connecting rod, high-silicon aluminum piston, and forged steel valve in pictures.
Attachment 687509

Attachment 687511

Attachment 687512

Attachment 687513

Attachment 687514

This is very interesting!

Originally Posted by jaggededge

Nice 4 stroke!
Terrible video. Need some high speed passes and a legitimate hover.

New flight video coming soon。We will use a better camera , better aircraft and better pilots.