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Author Topic: M17 small hit and and miss video?  (Read 5782 times)

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M17 small hit and and miss video?
« on: April 24, 2021, 06:16:54 pm »
I like the look of this model, it seems noticeable smaller with 13mm bore than an M90.
  I think the brass construction and curved spokes give it a bit more " old timey" look. I do fear it will run even faster than the M90 series.
   I have heard the throttle version run on video, but not the hit and miss version. If anyone has one or knows of a video they could link here? It would be much appreciated!


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Re: M17 small hit and and miss video?
« Reply #1 on: April 25, 2021, 07:54:12 am »
Looking over the pictures several times , it is clearly not a hit and miss engine.

Unless I am missing something?

Gil
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Re: M17 small hit and and miss video?
« Reply #2 on: April 25, 2021, 08:16:54 am »
I was concerned about that to Gil. I see no flywheel weights or walking beam or flying ball governor.
  I went on the microcosm site and the M17B is listed as throttle governed and M17 as hit and miss.
  If it is Not hit and miss than I have no interest in purchasing.
  Hopefully we can find out what it really is.
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Re: M17 small hit and and miss video?
« Reply #3 on: April 25, 2021, 11:50:17 am »
Bonjour,
The input valve is free, it is a Hit & Miss, even if I don't see the governor.
And it is sold as one :
Hit and Miss Complete Engine Model M17 - $280.00 microcosm-engine.com
microcosm-engine.com Hit and Miss Complete Engine Model M17 - Hit and Miss Complete Engine Model M17 This is a micro engine. It is made of brass and stainless steel. Water cooling structure. The bo...
microcosm-engine.com

The question is, which kind of Hit & Miss is it ?
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Re: M17 small hit and and miss video?
« Reply #4 on: April 25, 2021, 12:45:10 pm »
Quote from: Raphael on April 25, 2021, 11:50:17 am
...The input valve is free, it is a Hit & Miss, even if I don't see the governor...
The presence of a vacuumcontrolled inlet valve does not make it a hit & miss engine, it would need something to actively make it miss as well.

As far as i can tell from the pics on the website, there´s absolutely nothing holding back the vacuum from forming, and thereby nothing closing off fuel and make sparks miss lighting a combustionstroke.
This one will just run all out, on whatever fuelmixture it is set for.
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Cheers
Jan
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Re: M17 small hit and and miss video?
« Reply #5 on: April 25, 2021, 03:34:35 pm »
Bonjour,
I affirm nothing, I understand your opinion and agree with you, therefore, would it be possible that the speed of the engine generates the miss by itself without any other governor ?
Furthermore, the carburator has no acceleration lever, would it be possible on a classic engine ?
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Re: M17 small hit and and miss video?
« Reply #6 on: April 25, 2021, 03:45:22 pm »
Hi Raphael, It is not possible to have a hit and miss engine with no governor to regulate it. An atmospheric intake valve is on a hit and miss engine and also on many non hit and miss engines.

Gil
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Re: M17 small hit and and miss video?
« Reply #7 on: April 25, 2021, 06:09:35 pm »
If Jin would make a variant in this size that Does hit and miss, I believe they would sell. Hit and miss runs cooler temps and is more interesting to hear run IMHO
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Re: M17 small hit and and miss video?
« Reply #8 on: April 26, 2021, 06:09:20 am »
I have one of these engines, it is not hit and miss, it just has a manual hand throttle on it to regulate the speed of the engine.
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Re: M17 small hit and and miss video?
« Reply #9 on: April 26, 2021, 06:27:21 am »
Quote from: Mick christie on April 26, 2021, 06:09:20 am
I have one of these engines, it is not hit and miss, it just has a manual hand throttle on it to regulate the speed of the engine.

Thanks for posting Mick!...we now need to campaign to Jin to make us a micro hit and miss in brass...he is 85% the way there.
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Re: M17 small hit and and miss video?
« Reply #10 on: April 27, 2021, 12:18:19 am »
Not critical or down on any scale--size vintage machinery, but of all the possible "niche" interests, other than a static model, why a micro sized, already Way too fast running M90 Variant in expen$ive, monochromatic (boring after 1st day) all brass ?? No Sale interest here !!....Now a 3 to 4X sized, Big Flywheel, slow turning, Affordable Priced, "M9000" (T-Time Tim size) is what I'm talking & lookin for & Jin Could easily produce it in whatever (iron, steel, aluminum) whatever cheap & simple H & M reliable build even in a "Ready to Assemble" Kit version...How about some heavy lobbying interest in that high desirable direction......Anyone besides me ???
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Re: M17 small hit and and miss video?
« Reply #11 on: April 27, 2021, 01:47:11 pm »
Jin has been pretty vigilant about keeping his engines under 2 kg. Once you get much over the 4 lbs area, shipping from China becomes very costly.
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Re: M17 small hit and and miss video?
« Reply #12 on: April 27, 2021, 02:39:31 pm »
Bonjour,
I am like 70Rcode, I bought several Jin's engines and do not use them after I successfully started them because they are quite too fast and have not the slow motion I had in mind after having seen real ones.
Gil has an amazing collection, and when I watch his videos, I wonder where I could find such models and I also notice that the taller they are, the slower they can operate.
Having a 10 HP H&M engine in my 5th floor flat seems a little bit diffcult  ;D   
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Re: M17 small hit and and miss video?
« Reply #13 on: April 28, 2021, 02:03:01 pm »
I Can see how the little micro-sized M17 could "grow" on your hobby engine's "gotta have" list & hope their Is a functional H & M version available.....But, if not, Would make a challenging conversion project, along with fixing the sparkplug "thing" issue...A micro-sized, in-scale "igniter" mod would be kinda cool !! As a H & M ownership newbie (M-90), I'm still well down the slowest hits per min/Rpm "rabbits Hole" pursuit which tends to pull one to simply bigger-heavier physics size, but a Really slow hitting, H & M  Micro could be the latest, leading edge vintage model engine novelty!!
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Re: M17 small hit and and miss video?
« Reply #14 on: April 29, 2021, 07:27:01 pm »
If you want to see some awesome model engines check out Find Hansen's site. He designs and builds some of the finest models around:

findsminimodelhotbulbengines.dk
findsminimodelhotbulbengines.dk


His diesel model runs quite slow. It would be so great if he could make plans available so the parts could be mass produced cheaply in China and offered as a kit.

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