Thank you for ur insight, I do have a power supply i can use for the glow plug, and I think I would be able to get it to run on hydrogen but as u said lubrication is a big problem because it'll only fun for a minute or two before blowing up haha, I'll look into a 10cc gas engine as u said I just wanted to see if I could use a nitro engine since I had one laying around, and I will make some videos for you if you'd like I have a YouTube channel with a few videos rn only one on HHO engine though