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China.

@@alanfan9989 can u share link?

The instruction manual CG is correct. Thank you.

This is HSD brand. Yes EPO.

With 14kg turbine?

@@ningleongling9410 Yes. By SW-14kg turbine.

YES.

Easy to adjust. Stable after adjustment.

Thank .

按照原廠說明書沒問題，翼根前緣往後17.5公分

Hello. No gyros are used. As far as I know. Originally a TOC 3D pilot.

needle high about 1.6 turns needle low about 1.1 turns However, the position of the needle is different for each engine. Still need to feel the adjustment. Thanks.

@@alanfan9989 yes, that's right, thank you

Hi Fotios, thank you very much for paying attention to my video. It is divided into two parts. The first aircraft originally used 33R3. The engine weight was too heavy. Because the wing length of the Yak 3U was not long enough (1600mm), it obviously had insufficient buoyancy when landing. So it landed The speed is too high. In addition, there will be a high-speed spiral phenomenon during the rolling movement. For the second aircraft, I deliberately increased the wingspan by 100mm (in 1700mm). This reduced the speed during landing and avoided rolling. The phenomenon of turning a spiral. You can refer to the annotation of the video. The other part. If you want wonderful sound, install 33R3. If you want power and speed, install DLE35. That’s the difference. For the CG part, I weighted it according to the position in the instructions. thank you.👍

@@alanfan9989 Thank you very much for the advice. If I put the DLE 35, do you still recommend increasing the wingspan? Does the benefit worth the trouble?

@@fd2237 Later, the second Yak 3U was also replaced with DLE35. It is still flying today. I still recommend increasing the wingspan. I think this aircraft will be more buoyant if it is larger and the wingspan can reach 1700mm (for example, my other video YAK-11 green .Another level is 1800mm)So the ratio of Yak 3U wingspan is 1600mm is too short . After all, the aircraft control must be stable and its lifespan can be extended. 33R3 is more suitable for biplane aircraft. Slow flying is more suitable for beautiful sounds. For your reference. Thank you.

@@alanfan9989 I appreciate the time you spent answering me. I wish you all the best!

HSD

Yes . DLE55RA.

Gooddddddd👍

@@alanfan9989 maiden done! Thanks for your tips. th-cam.com/video/AF236BEuX_E/w-d-xo.htmlsi=yFjwtz5rUTO067V9

The factory test method is to use a hook to test CG. There is a hook tool provided. The instruction manual does not indicate CG mm. (The empty barrel of the main fuel tank is horizontal. The machine head will be heavier when filled with oil). Please refer to it.

@@alanfan9989 thanks, see page 43 in manual, CG=184mm... I moved the tank a little back so no CG change when full/empty so I can more easily set cg that fits for flight and landing without being nose heavy in one phase of flight. Your turbine seems over 25mm apart from straight section of exhaust tube, did you go for 30-,35mm? I am using the same k102, thats why I am asking, it is on the upper limit for that pipe, so if more distance helps to cool it, im there too :)

@@TomislavReskovic Your turbine seems over 25mm apart from straight section of exhaust tube, did you go for 30-,35mm? =>Yes. The distance between the straight section and the turbine port is about 30-35mm. There is no problem.

The factory's suggestion is just a reference value. You can change the value according to your own flight characteristics.

Our local seller sells them together with the landing gear, jet pipes, and oil barrels along with the aircraft.

@@alanfan9989 that is great, do you have any contact information please? I am looking for a spare canopy and the missing gear door. thanks

EDF can. Use 12s or 14s power. The flight weight is about 9kg (JET).

@@alanfan9989 thank you for the he response, I will be ordering me very soon.

@@skrub6969

🥰

New aircraft have tail pipes attached.

😀Royal Aircraft Factory SE5A G EBIA

The K-45 has already flown very well. The overall weight is relatively light. K-55 is more suitable for violent flight. Please refer to it. Thank you.

@@alanfan9989 thanks for the response. That sounds good to me

Yes. This a 2m jet .

Top message. There is a set of transmitters and receivers.😀

servos: generally 10~20kg standard servos is ok. lighting: LED are installed in the original factory.

@@alanfan9989 great, thanks. I've got all servos installed now. Mine did not come with lights. I will be finishing the lighting installation this week. I should maiden her soon!

@@alanfan9989 My maiden went great. This bird is awesome. do you have any pictures of how mounted your nose 😁gear door and the servo for it?

@@richardk302 Sorry. This is another pilot's maiden flight. I'm just recording the video.

Thanks.