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If a gas fuel, such as butane, is used, what structure of throttle should he use? Has anyone tried it? Thank you

Thank you. I reduced the electrode to 1mm and the pointer to 1mm according to your instructions. There is no leakage now. Thank you. Later, I'll send up pictures of my distributor.

Will different distances of carburetor intake pipe affect imbalance?

wow, nice

I have a RC four-cylinder cdi but the size is a bit big, because I am going to put the v4 on the rc model car, the size is bothering me.

Thank you for answering my question. Because the engine is too small, the distributor can only do 20mm, can you reduce the contact size to open the distance?

thank you. Your answer gave me a lot of help.

I made a distributor for my v4, only 20mm in diameter. When the distributor is not installed on the v4, it will not leak electricity. When the cylinder is under pressure, it will leak. The gap is about 0.1mm. What is the reason for this? I use the igniter of the motorcycle, it seems that the...

Good. Have you tried to run for a long time? Great L4

Yes, I didn't make valve oil seals. The valves are very small. What can you do to make such small valve seals?

Are there any running videos? Thank you

Nice, thank you. What is the maximum speed?

O-ring Seal Is it suitable for high speed? Thank you

When there is no spark plug, turn the crankshaft and the ventilator has no gas. When there is a spark plug, the gas is blown out. Are these gases leaking from the piston? Is there no negative pressure in the ventilator? Thank you

I tried to reduce it, but the cylinder on the left has almost no lubricant, and the cylinder on the right has normal lubricant. If a ring is added, will the resistance be greater? The displacement of 3.5CC is uncertain whether these resistance can be overcome well. Thank you very much

Single cylinder 3.5cc total 3.5*4 Two rings at present

I made an oil pump and sprayed the lubricant onto the crankshaft for splash lubrication.

I'm making a V4 engine. It works at 90 degrees.

My V4 is 3.5cc. How can I make a scraper ring? Smoking is really annoying. Sorry I can't publish piston pictures.