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Thanks....I think.

Hi Claude! Of course this is personal. I like the hit and miss gasoline. There are reasons. You can find a carburetor setting that works at one speed and works well. The hit and miss carburetor has no throttle. It's more difficult to build a carburetor work well at all speeds, but hit and miss engines have just one. And everything works slowly. This means, low strain on the parts, low friction etc. This means that even if the model is poorly made out of weak metals, you can get it running beautifully th-cam.com/video/CywmzhaHVeo/w-d-xo.htmlsi=v52Wji6sfGuo-X_9&t=442 and it is authentic. And, they are cheaper than complex engines. A V8 model or V12 is nice but you need a carb and ignition that works from 500rpm to 10000rpm, 8 spark plugs that all work, cams...and every problem is x 8. So, single or two cylinder is usually enough for me. I started loving steam engines as a child. Fire and water...There is excitement when an engine starts up, it is like coming alive. Steam engines do this coming alive thing well, but slow petrol enginess also feel like a coming alive at every start, the sound and smell entrances me. I like Stirling engines for their simplicity, like a small poem, but as they keep all the air inside you lose the possibility of exhaust music! In my computer programming I also like to build code that "comes alive" when it runs, just like a model engine, it is a creation of life. Perhaps that's why so few women play with engines? They don't need them to create life? :)

Good luck, I hope it helps. It's quite methodical to troubleshoot a small engine, really

The MUSA hit and miss. However it's not cheap. The one in this video needed a lot of work like main bearings, valve work. The MUSA Retrol hit and miss is by far the best and most likely to tun well and be an heirloom model and keep its value

? As there's no other way to do it on this engine, I'm curious to know what you mean

:)

Just listened to it, if it's the right one it's got a real "train whistle" kinda burst from a harmonica. Sad though...

I like the working model steam crane too! Cute!

Bonjour Raphaël! Happy new year! Thanks for your consistent support :)

Even reruns? You're too kind Ade! :) Thanks

@@ThomasPCGuruENGINES Especially reruns ;)

You're absolutely right

Thank you 🤗Welcome to the channel! Looking back at my Auld crane and Wilesco Traktor, they're in pretty much original condition. How many modern toys can you say that? Model steam engines might be a bit meditative for the modern screen generation, though...

Cool, thanks! I will daintily check that out. I rely on info like that from commenters so THANK YOU it all helps, I love the "community" :)

Got it, searched Howard at Myford lathes steam engines for sale, if this helps others

......ahhhhh. Yes. About that. They have definitely been built. By someone....even more definitely, modified and optimised by me :)). Thanks for your comment!

I'm drooling over the Auld crane.

@@ducttapetech9885 After all these years, and with more knowledge now, I realise the attention to detail he put in. Hardened piston, silver soldered boiler, solidly built safety valve holding double the pressure of a Mamod or Wilesco, and that machining quality. Standout in steam toys, I think

I haven't...I have had some good suggestions tho...was it you?

Thanks guys:)

It's a perfect match. Welcome David!

Yes, the early free flight engines were such a joy! The more modern engines are more for looks than performance. I well remember running across fields in rural Canterbury, New Zealand and launching my Vic Smeed Tomboy into the blue. Sometimes it would catch a thermal and nearly disappear. Happy days...

I will look it up, sounds interesting

That's deep and seems to be a tru-ism. But why?

Holts are supposed to tun in the other direction originally. Jin built this model to run this way, it won't start the other way

OK let me try to think it through. Not at TDC, but the exhaust cam should open at the beginning of the exhaust stroke and close et the end of it.

Many thanks Thomas, I will try that. wishing you a great new year, keep up the good work.

@@bertyjustice For my hit and miss, ignition just after TDC gives a great single "hit" firing at low speed. The following stroke forward is the power stroke. That stroke ends with the piston as far away from the cylinder as it gets, then as the flywheel carries it around it is the exhaust stroke., The exhaust valve opens at the beginning of this stroke. The flywheel rotating keeps it pushing smoke out the exhaust, until the piston is almost back at TDC and you close the exhaust valve. In a hit and miss, as the flywheel carries it through the next stroke away from the cylinder, the governor either holds the exhaust open (miss) or if it allows the exhaust to close, the suction formed opens the intake valve and petrol-fuel mix is sucked in preparing for the next firing (hit)

Thanks again Thomas, I have printed the information out to study. Have a great new year

Unfortunately you will have to force it off. The grubscrews have left a raised ridge on the shaft that scores the bore when rotated. It’s the hassle s I was having with trying to get my starter dog off the shaft that prompted me to install a decompression lever which I use all the time now when starting.

@@Darren_Fawcett That is what I thought might have happened. Time for brute force... How did you do the decompression lever?

Also it would pay to check your discharge check valve on your water pump. Check valve can cause hydrolocking if there is no spring installed or it could be modified to stop the ball from blocking the discharge line. My brass gears eventually chewed out because of the pump issue.

Great to hear from you, you're most welcome. Who knows what 2025 will bring?

Yes a cross head would have been extra nice, at this price range it is as unusual as the condensate drain cocks. Many greeting back to you, danke!

Bwaaaahahaha love it. Thanks for the comment! But really, I just play

Nice to hear from you Raphaël. For me, the pleasure is getting the engine running what I can achieve "perfect" and learn a bit. Early engines like the M90 needed valve lapping, new main bearings, retiming the exhaust valve. Lately, engines like the Microcosm OKMO v twins need nothing done. Having to lap valves seems to be a thing of the past. I still find that a batch of engines built by an engineer's employees rather than the engineer himself will not be assembled so well. OKMO's tiniest Stirling engines are perfect out of the box. But their Rider Ericsson's usually need fiddly pump work and are simply too small. Hit & misses can always use cam and detent latch optimisation. Kontax low temperature engines are perfection, but their high temperature mini engines have machining tolerance issues with the pistons-cylinder fit, which I guess is acceptable. I don't know when the Retrol MUSA vertical will arrive, surely soon???

Thanks Ade, it's appreciated :) Same to you

I have been curious about the MUSA hoglet as I bet it is MUSA's superb engineering. Do you feel that?

@@ThomasPCGuruENGINES I do indeed, I ran the hoglet last night, started straight out the box and its a ripper! The Retrol engines seem to always need a bit of work to get them to run as you want them to.

@@AdeSwash Thanks Ade. MUSA engines for the win

Mainly I like to add a switch so that it only fires during the hit part of the hit & miss cycle so it's not wasting battery and it's quiet

@@ThomasPCGuruENGINES ah that explains it

Bwaaaaaaaaaa hahahah you made my evening. My dude, we have all been there ....Also, for this quality engine, give credit to the perfectionist, passionate engineer at MUSA. "Retrol" is just a retail brand partnership of convenience :) You have an heirloom model right there

I meant to say thank you for your videos on the HM-01, I’m working my way through your tweaks but the oil going everywhere is a bit of a problem!

Hi sorry to get to this late but yes try 40 to 1. When you feel comfortable with the engine, check the ignition timing and exhaust valve timing, like is it at tdc for spark, is exhaust at start and end of stroke. Something's not right. I like to run a lot of oil thru when my engines are new then ease it down. Is your compression good? Also, it will spit a bit of oil, but not much

@@ThomasPCGuruENGINES Thanks so much for the advice. I think I made the original mix far too oily, more like 15:1! I cleaned everything out and filled the tank with a 40:1 which is producing a lot less oil from the exhaust. Compression is great, and I've adjusted the ignition timing to TDC so it's running nice and slow.

Your instincts are perfect Frank. We all use two stroke oil but better protection is better. And yes, it's splash from the crank case and not much from the cam gearbox. There might be a hole on the flywheel side for oil? Around the cams and gears I use a mix of engine oil and grease until it sticky and flowy. It is what it is...will spit out some oil due to it having basic synthetic rubber rings and not oil scraping rings although the builder, Jin from OKMO / Microcosm, has begun building engines with cast iron rings and proper oil control. These little vtwins are fun for the sound. Have fun playing!

I got my Wilesco traktor when I was 14 and oh my, how I loved that :)

Hey Logan, you watched that video? Cool! Hope you're still enjoying the channel! I enjoyed meeting you. I don't remember you said you have a youtube channel. I have seen a few young people's youtube channel, you're doing the best of them! It takes luck, work, and time. Good job learning how to do it!

@@ThomasPCGuruENGINES thank you so much☺️

nice! enjoy

I think it does too! Thanks for the support. Shiyi just sent me a video of the new injector, decompression lever. A little smoke still (ok) and no torrent of diesel from the exhaust. I am very excited!!

I'm looking forward to a newer one with a better injector. And maybe have a go at mine. I'd love to run the model more. Not sure if I can ever run it in the kitchen, but it's a great size, looks beautiful. I think the size and weight puts the price up but I've decided it's worth it

I'm so excited, like a giddy school girl!...just less pretty

Is not a very clean engine when run ;-)

Mr Zhou also dreams of this, he says; multicylinder etc. We will see :)

Hmm, maybe reconsider using exploded in that context

Ahhhhh what a good idea, I will find some for it. I have used kerosine. I will check the lubricity. Kerosine is cleaner burning than diesel but less lubricity. Being a made-to-price "educational" model (and it has been) the piston in this is aluminium. Anyway I'll check this out, thanks. After reassembling, tightening, leak finding and tuning this I think I could build an engine kit by @niffi2 when he releases it, so I'm actually happy. Ish... and I still support Shiyi Zhou

Yes! Hello Mr 212 at long last! How are you dude! "They" is Shiyi Zhou and yes Darren and I are kinda helping him with ironing out problems. I hope he can iron out and improve stuff. Then I hope he treats @Darren_Fawcett and I well. Says he will, free upgrades etc for us. So far he has seemed to be cool... Matt, your channel went "dead" and plenty of the guys miss your style...u ok man? Family good? My health took a dive for 18 months but ok now. Yeah, I don't get riled up by being mistreated by hobby suppliers, or money any more. This youtube thing isn't about money as you know... not for 99% of youtubers it's about our community. We could all be flat dead tomorrow. really nice to hear you're still out there

I tried this with the earliest Microcosm hit and miss engine and haven't tried it since. My tiny drill melted and jammed as I ignorantly tried to drill into the cylinder sleeve which I think is stainless steel, anyway, impervious to my skills at the time. There is absolutely nothing wrong with your idea, though. Jin's latest engines have oil pumps, different piston rings and do not need oil in the fuel like previous ones do

exactly