Recent content by Lauri

Hi. Also superglue (cyanoacrylate) often works well. Most of them can be dissolved in an acetone bath, or in nitromethane. Also, I sometimes use epoxy to mount parts for machining, or just to support brittle or thin parts. Epoxy is then removed with dimethylformamide. Lauri

Now I've ordered some Macor in 1,25" dia. We'll see what happens.. L

Thanks, I'll check McMaster-Carr. I don't really care of the price as long as I can get it (I need 30mm dia. barstock). This is not for hit&miss engine, I want to try ceramic because the burning process is too cold at the moment, thus unstable. I can stabilize the process with differend...

Hi. I am also interested in finding a supplier for machinable ceramic material. I would like to make a combustion chamber to my engine of it. I have some ideas why I think it would be worth trying in my case. I was googling the subject a little and bumbed into a material called...

That's how it looks like. -12,6cc -bore 24mm -stroke 28mm L

Thanks. Yes, I spent last summer playing with differend venturi's :). But I must say that with a healthy engine, with good thermalbalance and stabile burning process, the venturi shape shouldn't be too critical. I am working with an overly powerfull and super light engine which tends to run too...

..and the latest muffler. The engine weights 270grams + the side resonant muffler which is a little under 40g. L

Another picture..

Yes, it works well. The set in the picture has been running for allmost 100 hours and shows very little wear and no carbon buildup. So, mechanically it is very good. But to work perfectly as a control line aerobatic engine, there is still a long way to go as the requirements are a bit differend...

Hi. How about this? This is the piston/cylinder group of our control line engine. L

Thanks. For once it looked tidy, so I took a picture :)

Hi. I just found this forum and find it very interesting. I hope to find similar-minded people in here. My name is Lauri and I live in Switzerland. Originally I come from Finland. I'm a watchmaker and micromechanic by profession and for living I fix complicated watches. Outside the...