OS MAX FP 40 is a great glow engine from the early 1990's, which I disasemble, clean, reasemble and then run in my test stand Gasket Making for Model Engines - • How to make your own G...
I just rebuilt the same (even made my own gasket) a couple tips for US viewers: gasket is 120lb card stock for the exact original gasket thickness, for the exhaust sealant I used "permatex copper" which was easy to do and worked a charm. I used jewelers "polish pads" to polish all the surfaces leaving the cyl insert and piston as they were. A little fiddly on the test stand but she did fire up and ran beautifully for break in. If I can do it, so can you! Thanks Mark!
Mark --- Will watch your 34 videos on engines - will keep my question ( s ) to the end video you may answer them by then. and maybe other viewers will have my answers by the end video. Really enjoy you explaining the break down and the reassembly ----- Rodney
Great results! Looks good, sounds good. Idles good. Transition is good. Perfect amount of smoke when running high RPMs. Good video. Thanks for the post.
My first RC engine, I bought one in USA as a long time ago and now I got it again and will flight a small plane after 10 years. I love that engine too! But I still not achieve the better adjust like you... It runs at maximum RPM and after 3 minutes stop. Good video, thanks...
I was watching the video and I heard the "pop" when you flipped the prop and I knew the engine was good. There is a certain sound that says I am a broken in engine with lots of life left in me
thanks for your time and video,I was hopping you would show us the position of the ports in the cyclinder when you are putting it together I have a mark on the cyclinder but not on the block so when I took it apart did not pay attention on the ports positions.now it does not start mabe beacause I have the cycinder on the wrong position ??? thanks for you time again
Thank you for the kind comment about the video, pleased you like it. The exhaust side of the cylinder will have carbon on it from the gasses, and the two ports will be of different sizes, the exhaust is often larger, but theses should line up correctly in size with the crankcase casting - hope that helps, good luck with getting the engine running again
@@MarkRobinson555 I do have a question now that I have my pedal in front of me. Speaking about the adjustment screw, how far should it be in relation to the carbon rod? Mine had the usual issue of not wanting to spin the motor, then all of the sudden it comes to life deep into the pedal push. So I adjusted the screw in to about half way, and noticed it is still not making a connection to the carbon. Should it be touching the carbon? Or does it not matter? Thanks again
Good morning Mark. As you said, what a great little engine, it looks almost new. Do you think my wife would let me use her ultra sonic cleaner. Nice one. 👍
Nice running engine. I like the 25 and 40 FP in my smaller float planes. If I happen to have a mishap and dunk the engine, I don't have to worry about ball bearings rusting. Did you Put a new O ring on when you put the carb back on? It looked like the original O ring was still on the bench.
Hi, thanks for the comment, yes it needed a new O ring, old one had gone stiff and brittle, in my mind its an easy win as they are cheap and easy to obtain, and can make a big difference.
Yes, same on all engines, its just a clevis on the end of a threaded rod, which is held loosely/ friction fit, on the wooden throttle control leaver. Its loose because there needs to be some movement as the wooden leaver moves through an arch, its not perfect, but works ok.
Hi Robert - My father passed about 13 years ago and I got his model plane from my mom this past weekend. I took the engine apart to clean it and noticed the seals need to be replaced. I believe you linked a gasket making video in the description of this video however when I click the link it was a dead end. Could you repost or re-direct me to that vid? Thanks!
Great video as always, loving your recet stuff! Interested in picking up an ic model, I only fly electric at the moment. Have no real experience with IC your videos are great but do you know of a good resource/getting started guide to running and maintenance? Thanks
Hi there thanks for the comment, I found with IC the more you use them and run them in test stands, playing with the tuning and reading about how to tune them, the more I learned, but also talking to people and finding someone, who's judgement you trust to talk to for advice. Good luck, they are great to use, I enjoy the IC side as much as the flying it's self.
Oliver. As Mark said. However, if you are in the market for one, get yourself a new engine, you can't go wrong with an OS or an Enya, ( my personal favourite make). I say new as you can follow makers instructions re fuel and prop size plus you know it's not on its way out.. Get one and enjoy!
Hi there, can I ask you is that a Black and Decker workmate you have there? I've just bought engine test stand and had thought about getting a workmate to clamp it too. Thanks .
Hi Mark need help with an old OS 29, made in Japan. Know nothing about it but got one. Used to he my dad's. I want to make it running in his remembrance. Can you help
I think it would probably benefit from a gasket, you could make one out of some heavy aluminium foil. However, if not loosing compression maybe you can get away without one
Well I guess that is a how long is a piece of string question, I have certainly never worn one out, if treated right seem to run for ever, but life will depend on so many factors, like fuel mixture, % nitro and oil, prop size, hence how fast you run them, use of after run oil, correct cooling, ie not getting really hot in a cowl, the make and model of the engine and of the course the ultimate, driving them into the ground at high speed is a little detrimental! Hope that helps
