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08-10-2023 | 06:45 AM

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delphichenbin

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From: Beijing, CHINA

My Honda GX50 engine conversion to RC

Hi guys!
As we all know, there is a joint venture factory with Honda in China, we can buy the short body assembly of the GX50 four-stroke engine for maintenance part in the aftermarket, the price is very cheap. So, there is no need to buy a used Honda lawn mower or other hedge machinery on the second-hand market, and then remove a lot of unwanted parts in order to get the main engine that can be used and cause a lot of waste. I have long heard that this Honda GX50 engine can be conversion for use in model plane engines, and is a good power for World War II like scale model planes or large aircraft, I can remove its oil pan and burn mixed oil. This is indeed a very good choice. So I'm going to try to do this...

I learned that a friend of mine, Mr. Yao, who runs a car repair shop, is also a model enthusiast of his own, and knows very well how to modify engines such as GX50 into model aircraft engine. So I wanted to ask him for help, because he had some metal materials and machine tools to make some small parts necessary for modification.
When Mr. Yao got my short body engine, he was very skilled at dismantling it, and surprisingly quickly cut off the unwanted parts with a grinding wheel Angle grinder. He was very skillful and knew exactly what was to be kept and what was not useful.

My God, it looked like this in less than an hour! As you can see, there was a huge oil pan, and like most four-stroke engines, the oil was separate from the gasoline, but we decided to burn the mixed oil in the future, so the oil pan was useless, and when we cut it off, we lost a lot of weight, and this engine had a timing belt soaked in the oil, and when we cut the oil pan off, Also cut the lid off the timing belt box so that it is completely exposed and becomes a dry belt.

We cleaned each piece, and the next step was to assemble an engine that could fly. As you can see, we have removed the third oil ring from the piston, leaving only two compression rings, so that we can burn the mixed oil. As you can notice, we cut off the oil stirring blade next to the crankshaft timing wheel, and removed the crankshaft rear oil seal.

Ok, let's write here today, and look forward to assembling a real aircraft model engine that can fly to the sky, tomorrow!
Thank you all

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