2024 Hit & Miss model Musa HM-01- tweaks, instructions and SLOW 

I hope the folks at Enginediy/MUSA watch this video to see how slow the engine should run. Hopefully they take some of your pointers to improve this engine. Great job Thomas!!!!

Bonjour Thomas from France, Being at first a steam passionate (for RC model boats) I just discover by chance your channel with a great pleasure because I also have a collection of Hit & Miss engines (Microcosm and Enjomor) and I have recently seen this MUSA that I will purchase. I am a very happy and lucky man because I have had various problems with almost all my engines, bought RTR, especially the worst Enjomor and have very skill mechanic friends to help me to repair them. I appreciate this video (among your others) because it tells me what problems I will have to face when I receive it. Between you and me, I think it is abnormal to have to work on RTR engines but if I have to, your experience is precious. Amicalement, Raphaël

I have just finally decided to purchase this very engine after looking at several other ones... I am looking forward to building this and getting it up and running. This will be my very first model engine build. Thanks for sharing your videos Thomas... It has really helped convinced me the money on this engine should be worth it. Cheers.

Love the step change, still waiting on the rest of my parts to arrive for mine.

lots of great mods on this. I got my kit assembled and running, now for the tweaks.

Sounds and runs great! I have just got one so this is very helpful. Thankyou :)

Nice tweaks, will be very helpful for all the owners of this model. Just an idea for replacement spring at the pushrod. I also noticed that the spring is too strong for its purpose so i took a smaller, weaker spring from a biro. Those springs fit exactly.

I enjoy watching all your videos as I have many of the same engines as you, my favourite up to now is the large green one as it starts with ease and great to watch, also I have been running all my engines on a 50-1 2 stroke mix perhaps more smoke than the best but I feel it helps to keep the cylinders lubricated, so far so good. Most of them just sit on a shelf look good and run from time to time for a short time trying not to wear out many of the brass parts, also I may have been running with a bit heavier oil on the gears and contact surfaces,perhas a 40 grade. Thanks again keep up the good work.

I like how slow you have your engine running Thomas. It is the slowest I have seen any ones run so far. I would get one of these if I could adjust to get it to run as slow but not sure if I have the knowledge to do that.

I found out that using one of the tall 9v batteries gives it more consistent spark and I got mine running really good now.

Hi Thomas. Great video! I just got my engine, and before I run it, can you tell me what kind of oil your using in the cylinder oiler to lubricate the cylinder? Thanks for showing the mods you did. I added to the step of the detent. I haven't tried a weaker exhaust valve spring, but the valve rod seems to return fine with the tension of the points, so I didn't put in the valve rod spring. Also, I didn't have to drill out the guide, but I did have to de-bur it. And I also have the ignition timing set just a wee bit past TDC. Thanks again for all the tips!

Ahh, now it's cat approved, very good!

About gluing a piece of brass on the lever...did you have to file the edge down because of the added thickness the brass added? Brass is a bit hard to cut, why not glue on a piece cut out of a soda can? You can cut it with scissors, is very thin, and when/if it wears out just unglue it and replace it.

loved the video, although wouldnt it have been easier to just unscrew the tappet screw so it pushes the exhaust valve further all the time instead of gluing the little metal plate to the lever thingy?

I recently purchased this retro Moussa -1 engine and I was wondering have you taken the cast wheels off after the bushings have been installed and how to do it. Thank you

What is the electrode tape for that comes in the kit.

Hey, have you had a issue with your ignition. It seems that mine everytime just a little bit of oil gets into the points system i have no spark. Any ideas how to fix this? Because i have to oul the camshaft and pushrod.

Are there companies that make miniature whirley gig or carnival rides these engines can power? Curious cause I want to get into this hobby.

iam waiting for my kit to arrive .what is the best fuel,and oil to use on a retrol hm-01

Hello, what material is the body/cylinder made of, is it steel or aluminum? Thanks very much. Beautiful model!!

7:28 spark in water jacket ?

Yes. I know it's Chinese. Why have they called the engine the same name as the fuel it needs to run...? 🤣

That intake sound is so annoying. These Chinese company can't get a hit n miss right. I was hoping this one be great right out of the box. Unlike the horrible Enjomor Hit n miss riddled with issues