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Author Topic: Steam engine from China qb3  (Read 2749 times)

rhavrane

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Re: Steam engine from China qb3
« Reply #25 on: April 13, 2019, 07:46:35 AM »

The principle is to mount a siphon to make an air cushion in order to protect the membrane from excessive heat. That said, I often install gas regulators against my boilers without any problem as you will hear it, for examples: https://www.youtube.com/watch?v=JdRwDXVLJIA or https://www.youtube.com/watch?v=utYZJDJPBVg
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RaphaŽl
RaphaŽlopoulos Steam Lines UnLimited
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Bernhard

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Re: Steam engine from China qb3
« Reply #26 on: April 16, 2019, 02:24:46 PM »

hi  Got this Steam engine in  trade with a friend yeasterday ,never be under steam so brand new, m29 with feed pump m5,,
so did try it under steam,have to solder one corner on the exhaust,,ajust the feed pump gear wheel  and bigger o ring in the pump.tighten a few screws,,
it look to be a very well made engine,,nice size,run fin,,on 20-30 psi,,so a short video of it running,,
           https://www.youtube.com/watch?v=vQkWtm01iiw&feature=youtu.be
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southsteyne2

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Re: Steam engine from China qb3
« Reply #27 on: April 17, 2019, 02:50:43 PM »

Runs nice but seems to have too much end play in the crankshaft  2.22 in the clip.Cheers
John
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Bernhard

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Re: Steam engine from China qb3
« Reply #28 on: April 17, 2019, 03:50:52 PM »

ok.Thanks. i will look in to it later.
Did 2 small handle,,and som cooper pipe
ready       https://www.youtube.com/watch?v=W9asddYBMr8&feature=youtu.be
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Mark T

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Re: Steam engine from China qb3
« Reply #29 on: April 17, 2019, 03:55:54 PM »

Whatís the build quality and usability of this motor compared to a TVR1A now youíve had a chance to play with it?
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Bernhard

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Re: Steam engine from China qb3
« Reply #30 on: April 17, 2019, 05:47:54 PM »

Im a big fan of tvr1a...have be used them for years,,look so good,,and a nice size to,and eny problems,or parts Robert from Graham have be  so help full,,,but this engine run and look just great..made of brass and stainless steel,,look to be real well made,,much better than i think it was,,hex bolt to,,all in all to now, im very happy for this,,so lets see in time to come..and the price is not easy to beat,,
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carlfmiller

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Videos of Steam Plant from China M29 Twin Vertical
« Reply #31 on: April 30, 2019, 02:50:09 AM »

The Microcosm-Engine M29 Steam Plant I received last month started right up out of the box, and as I reported, it is nicely made, and runs like a top. Now I have posted 3 YouTube videos and you can watch it in action.


https://www.youtube.com/watch?v=JEA3t3CWsVA


https://www.youtube.com/watch?v=FwkxCU-JyTI


https://www.youtube.com/watch?v=vdB1VIzt-Sk




I  noticed some improvements to the M29 steam Plant  since Roy Burton posted his M29 video in Sept 2017 (Posted in this thread by Bernhard). Mainly, there was no need to rebuild the engine! For instance The cylinder cap has 5 bolts now, not 4; the oiler has a see thru glass body; and importantly Jin has added the "P5" gas regulator which you can see working in these videos.




Later this week I start building the boat-- the planks are in the mail!! I will start a build log of the launch Cecilia.


Carl

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KNO3

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Re: Steam engine from China qb3
« Reply #32 on: May 02, 2019, 08:13:39 PM »

Seems to run very well.
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carlfmiller

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M29 Installed in Steam Launch Cecilia
« Reply #33 on: July 16, 2019, 06:42:40 AM »

      Well 2 1/2 months since I got started on the steam launch Cecilia. The M29 steam plant works great on the bench; the only thing I did with help from George in Scotland, was switch out the pressure gage for a miniature gage sold by Clevedon, and now it has a much shorter and non-shaky syphon tube. (photo) Now she is just about finished ready for the final RC hook-up and the first launch under power. Maybe in the next couple of days there will be a video to show!
 
For now, have a look at a few pictures of the boat's creation, starting with the hull planking over a "strongback" that was previously used to make a Tippecanoe T50 sailboat. Western red cedar planks (although very blond) laid up then costed inside and out with epoxy. The transom construction was modified to adapt a "draketail" transom which I think makes this launch unique.  Deck ply was epoxied over carlins, then the cockpit cutout was made and the laminated coaming inserted. The 1/16" okoume plywood deck was over-planked with pine and mahogany. Final touches outside are the coaming caprail and the toerails at the gunwale. Looks pretty realistic!
 
The keel is 1/4" ply and has the stuffing tube embedded. The prop is 60mm and the rudder should have good command. Making a powerboat out of a sailboat hull is not an everyday thing, bit I think it will work. My one photo at this time of the side view is not a very good shot, sorry.
 
Inside. the M29 plant sits midships on two pine stringers. The removable butane tank is at the forward end.  Floorboards are mahogany and satinwood veneer laid on balsawood. The seats are leather upholstered and will be completed with upholstery "tufting" next week. A little steering station aft adds detail; it will have wheel, compass and barometer. The RC servos for the steam control and the Rx are mounted to the underside of the rear seat (nearly invisible) and the battery pack in under the foredeck.
 
The hull is unpainted now (it is epoxy coated at present) until I see how she looks underway. The bootstripe is temporary white tape, but it is where the waterline lies at 1lb displacement-- a float test confirms this.
 
One day I'll make a build log with details. Meantime have a look at Cecilia (named for my Granddaughter in Maryland; the inspiration for the draketail)
 
 
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carlfmiller

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Build Photos of Cecilia Hull Construction
« Reply #34 on: July 16, 2019, 06:46:23 AM »

Having a little trouble exporting these photos. These relate to my previous post
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carlfmiller

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Cecilia Construction Details
« Reply #35 on: July 16, 2019, 07:03:00 AM »

Here are the remainder photos (whew!)


-Carl
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carlfmiller

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One More-gotta have a passenger!
« Reply #36 on: July 16, 2019, 07:14:35 AM »

I couldn't resist.


BTW, this guy sets the scale of the model 1:8.  He is 9" tall. This would make the LOA of a fullscale Cecilia at about 35'. 


-Carl
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rhavrane

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Re: Steam engine from China qb3
« Reply #37 on: July 16, 2019, 07:44:44 AM »

Bonjour Carl,
Beautiful launch indeed, and I am jaleous of your crew  :}  With such a thin hull, you won't need more than 20-30 PSI to navigate gently and save autonomy. Which propeller did you choose ? For my one, a 2,75" 4 blades Propshop, operated very easily at the pressure mentioned  :-))
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RaphaŽl
RaphaŽlopoulos Steam Lines UnLimited
Membre du Modele Yacht Club de Paris http://mycparis.fr/
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Bernhard

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Re: Steam engine from China qb3
« Reply #38 on: July 16, 2019, 08:06:40 AM »

 :-))  top..

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carlfmiller

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Prop for Cecilia
« Reply #39 on: July 16, 2019, 08:14:16 AM »

Thanks for compliment Raphael.  The prop for this boat is 3-blade 60mm made by MSM for Caldercraft. I may one day upgrade to 4-blade from Propshop; I have a 70mm from them for my larger launch (has Mildura twin cylinder steam plant) but I have not installed it yet. Certainly is  thing of beauty,


I was just in Paris, cruised Seine to Normandy- what a lovely time. I should have thought to give you a call! Sure had great food! I loved Giverny! Took one thot that does a little justice to Monet


Best,


Carl
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carlfmiller

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MicrocosmM29 Success on Steam Launch Cecilia
« Reply #40 on: July 22, 2019, 06:28:30 AM »

Here's a  teaser clip of Cecilia scooting on her maiden water trial steamed at 25psi on Microcosm M29.  A few scale details to add, and bottom to be painted, but here is the proof that the LWL is Ok and the boat moves out!  Fwd/reverse/speed control all perfect. Ran 15 minutes and stopped, still had fuel and water.Thank you Jin for the steam plant! And Tippecanoe Boats for help on the boat.


All up wet weight is about 11 lbs.


https://youtu.be/BsD9RT427rA

Carl


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KNO3

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Re: Steam engine from China qb3
« Reply #41 on: July 23, 2019, 08:52:30 PM »

The hull looks beautiful! How does the steam plant perform? Is it capable of more speed? Are you happy with the quality?
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rhavrane

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Re: Steam engine from China qb3
« Reply #42 on: July 23, 2019, 09:13:15 PM »

Bonjour Carl,
Which propeller have you installed on your launch ? With which pressure do you operate ?
My tug "Vient de loin", more big-bellied, seems more efficient with the same plant at 2 bar with a 2.5" four blades Protean Design propeller.
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RaphaŽl
RaphaŽlopoulos Steam Lines UnLimited
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carlfmiller

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Cecilia Steam Launch- New Movie
« Reply #43 on: July 23, 2019, 09:54:41 PM »

Cecilia's Microcosm steam plant which has a steam attenuator installed (which works beautifully) operates at 25psi in this video. It is turning a 60mm cast 3-blade bronze prop made by MSM (sold by Caldercraft) There doesn't seem to be much point in making the boat go faster. But I am changing the prop out to a 4 blade PropShop scale steam prop.


Since I posted the "teaser" clip, I made a 4 min movie of the boat on her trial launch and here you can see her performance and maneuverability. Not sure how she would go in a stiff crosswind. But it sure looks like a boat needing passengers.


https://www.youtube.com/watch?v=uUr8T3N7SWE&feature=youtu.be


I think of this as a success for both the boat design and the steam plant. I did have a lot of help.


In line with the original subject of this thread, yes I am very happy with the quality and performance of the Microcosm steam plant. It worked "out of the box". Just don't be expecting detailed operating instructions. I think you can trust whatever you buy from them.


Carl
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rhavrane

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Re: Steam engine from China qb3
« Reply #44 on: July 24, 2019, 05:22:05 PM »

Bonjour Carl,
25 PSI  :-)) :-)) :-))  I like using the largest possibe propellers not for speed but for a gain of autonomy, I experienced it, this is why i mention it : https://www.youtube.com/watch?v=TVl2NCWmyXA
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RaphaŽl
RaphaŽlopoulos Steam Lines UnLimited
Membre du Modele Yacht Club de Paris http://mycparis.fr/
Ma chaÓne YouTube:  http://www.youtube.com/user/rhavrane
Mes albums : https://picasaweb.google.com/104408627118165995713/
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