Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Steam => Topic started by: livesteam on March 27, 2011, 09:18:33 am
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Hello!
The website of MHB says that they will stop the production of Topaz and Seekadett. It's a kit that's in my mind since a long time (as I live at the lake of Zurich and know escher Wyss quite well) and now this would be the last chance (although I do not have the time for building another model just know...).
Who has bulit the kit and woulde tell the experiences with it?
Thanks a lot!
Kaspar
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Dear LIVESTEAM,
You can find a very comprehensive story of building procedure for DER SEKADETT steam launch from MHB kit on modelismonaval.com steam forum.
Hope this will help.
Regards,
Roman
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Thanks ENGINEMAN! Unfortunately I don't understand a word of Spanish, but still it's a very useful story of building just because of the pics! A great build..! :-))
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have you got a link as I am having difficulty finding it.
thanks
Peter
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You're welcome Kaspar!
Here is the direct link Peter - http://www.modelismonaval.com/foro/viewtopic.php?f=13&t=2631
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thank you for that , I am about to build one now.
peter
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I am about to build one now.
Looking forward for another interesting build story. This time in English :-).
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thank you for that , I am about to build one now.
peter
Peter-- you are living my dream!!! I will be following you
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Hi, I am presently building Der Seekadett. I bought the model last year. Did the steam engine last year and just fitted it for the first time in the hull. I also use the photos from the spanish website. It gives a good help as the instructions are not that extensive with information. You can use the English translator at the site.
I will make a picture of mine and will put it on here
JJS
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We look forward to it :-)) :-)) :-))
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(http://s1.postimage.org/13j848bgk/DSCN0055.jpg) (http://postimage.org/image/13j848bgk/)
(http://s1.postimage.org/13k6uiltw/DSCN0056.jpg) (http://postimage.org/image/13k6uiltw/)
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Hi, I am presently building Der Seekadett.
Pretty much hope to see the further updates for this very interesting build !
Regards, Roman
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Inside finished and painted in primer
jjs
(http://s4.postimage.org/2am1txe04/DSCN0081.jpg) (http://postimage.org/image/2am1txe04/)
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The best bow that there is on a model boat!! I have always lusted for one from afar :-))
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Steam plant for the Seekadett
JJS
(http://s4.postimage.org/pyizb5no/DSCN0086.jpg) (http://postimage.org/image/pyizb5no/)
(http://s4.postimage.org/pzb3g21w/DSCN0088.jpg) (http://postimage.org/image/pzb3g21w/)
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Test run Seekadett Steam plant:
http://www.youtube.com/watch?v=JdvCZV1g_iE
JJS
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Very nice! How much water does the boiler hold?
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Thanks,
The volume of the boiler is 1,2 L; usable capacity 1 L. The unit is flue boiler with cross tubes, internal vertical flue and return tube, made by MH&B
JJS
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Oh quite a big boiler, I guess you get a long running time with it.
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Hullo JJS....that is a very good looking & interesting package.... :-))
the engine...is it from Anton?
the lubricator is from Winfried Niggle
the gas regulator & gas auto shut off ...are they from JMC?
who is the manufacture of the gas tank &...assumed similar low profile de-oiler condenser?.........
& very tidy [true+horizontal+vertical] tube work displayed too O0 .......Derek :-)
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Hi Derek,
The engine is indeed Anton, gastank and condensor are MH&B. It is the steam plant package which goes with the Seekadett model. I added flyweel, the Niggel oiler and Anton gas regulator and steam whistle . My only fear is that the plant needs on a "diet" :-) when at sea, as the Seekadett hull is a light displacement hull, and the additional weight i have put into the steam plant could put it to deep on water line.
JJS
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According to running instructions it should give 35 minutes of running time, but i am not sure if this is bound to the water capacity or gas capacity. I did not yet do a long running test with the plant. My feeling is gas capacity is the limiting factor, but as i have fitted the gas regulator i suppose i will get some longer running times.
Here the Anton regulator / pressure drop shut of valve
(http://s2.postimage.org/emj1otg/DSCN0089.jpg) (http://postimage.org/image/emj1otg/)
JJS
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JJS..... I have a V71 gas regulator from Anton ...however it yet to be commissioned <*< ..please keep us posted with your Seekadett photographs.........
With your Anton V7? gas control system........& hence gas saving :-)) .....I suggest that boiler water will be the limiting factor.......... Derek
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Hello JJS :-)
I would agree with Derek, according to the size of your gas tank: you'll run out of water before gas. So be careful , and watch your water level to find out what is the safe time of sailing.
Your propeller is very nice and , it does not need a lot of RPM to move the Seekadet, so I wouldn't be surprised that by running smooth you get 45 min sailing & even more. above all with the regulator and no more than 2 bars pressure setting.
Let us know, it will be useful datas !
Regards. ok2
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Did a duration running test today with full gaz tank and boiler. The lever of the anton coupe gaz V 70 arms nicely at 40 psi, took 15 minutes to get to 40 psi. I have the impression the gaz regulater V 72 does not really regulate, but give only a very low gaz flow. gives only a 15 to 20 psi pressure on running. After 90 minutes i run out of gaz it only consumed half of the boiler water, i have run the engine for over an hour, but on low speed because i could not get pressure above 20 psi during runs. Limited factor seemed to be the condensor tank as it was ejecting water during running. The V70/V72 are nice pieces of engineering but i have a doubt if they work properly. Any one experience with these? I am going to make a run without these installed but have first to make a bypass gaz line for it. Keep you posted on next duration run.
Regards
JJS
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you have a problem if it takes so long to heat up , is there a reason you did not use the supplied insulation? as it normally takes about 7 min to heat up , I would remove the V70 it does not need it and it does not seem to work properly, Brian from MHB never used one and the boat is very sensitive to weight changes also the reason why the condenser tank is full is because the boiler is not getting up to pressure and you are using wet steam to start with, nice build so far, must get moving on mine and post some pictures.
Peter
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Good morning!
Nice weather for sailing!........................ I'll go right after walking the dog! O0
JJS, I think that your problem is coming from the regulator which does not allow enough gas to pass thru. The informations that you give (& I agree w/ HS93) it takes too long to built up pressure & your running time is also too long. You built up temp & pressure , but too slow. You should deliver more heat in a shorter period of time.
I have the feeling that your run with regulator closed and the gas is passing thru the safety orifice. (I don't know the name). Which allows the burner to go on slowly.
You probabbly need to do another test and check on your flare. You should hear a strong blow. And , if you did not touch the calibration of it, the flare should almost die when the pressure reaches 30psi.
You say, your V70 "coupe gas" is set @ 40 psi and your working pressure is +/- 20 psi. So your gas should not reach the regulator. If it does, there is something wrong.
Anton regulators do not really regulate, but cut off the main gas port when the pressure is reached and allow a weak leak to maintain the burner going on.
Now if, your regulator is set low and the "leak port" is opened too much, it means that your regualtor is not doing the job. Most of the gas is coming out the wrong way.
I suggest that you try again with the knob of the regulator , completly screwed in . When the pressure reaches 30 psi, you unscrew it, until you hear the flare almost diying.
If the flare remains strong or still strong, you then have to tight the small screw on the regulator's side untill it allows a small flare for the burner too stay burning.
Remember also that if your V70 is set higher than the regualtor pressure is set, it will not work. You must set this coupe gas at +/- 10 psi. This is enough for the safety of the boiler.
If you have any problem, we can go step by step on MP. I understand that the longer I am in my explanations, and the more confusing i am. %%
No sorrows, it will work. ok2
Have a good day! :-)
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Thanks for advice KBIO and AS93. It is indeed a very good day for sailing. I tend to build boat models which work well but i never sail them. My last finished typhoon mahogany triple cockpit runabout from Dumas never touched water!! I have to find a good pond here in Brussels ;)
I will do some testing today on the burner when it is not placed in the boiler. By the way the boiler is insulated with the standard material delivered with the kit and i have put the planking over it (some left overs from my Typhoon model); looks much nicer, even if it eventually covered by the boiler house
Keep you posted on running results
Regards
JJS
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JJS ....some good points here O0...
....as HS93 may be eluding to is..... if the boiler water level was initially too high...you may be priming or drawing water instead of steam
...also as KBIO suggests some form of setting error with your V70......... >>:-(
Have you installed a boiler water pressure pilot isolation valve? [between the boiler & the V70]........your V70 without pilot pressure should ensure that full gas flow is permitted & hence would minimise the boil up time
I cannot see, but do you have a pressure gauge on the gas side to confirm you have a full gas charge?
I have seen of a few of the French WEB sites......where identical pressure gauges were installed on both sides of an ANTON V71 for this purpose & also literally see what is happening
These regulators may sound simple & some may initially think that pressure will remain constant...& only the flow will reduce <*< ...this is not correct as we also experience pressure drop through an oriface...so ultimately this discharge side of your V70 will provide both reduced flow and reduced pressure to the burner 8)
Have you checked with MH&B...on the procedure for positioning the boiler burner for setting/optimization of oxygen draw?
I do understand installing the isolation valve is more expensive than two unions & a short tube spool piece to replave the V70 & V72 for test..... %% ...but that may only prove yor boiler is OK
....but will not let you experiement with the GAS + WATER + HEAT mix ...I also understand gas is clear...but we must see it ....
I am sure in time you will resolve this.... :-)) Derek
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Some work done on my Seekadett. I am happy to have the link with photo,s to the Spanish model builder site , because building instructions from MH &B give limited explanations
JJS
(http://s2.postimage.org/1vr64xl5w/DSCN0156.jpg) (http://postimage.org/image/1vr64xl5w/)
(http://s2.postimage.org/1vrl0rplw/DSCN0157.jpg) (http://postimage.org/image/1vrl0rplw/)
(http://s2.postimage.org/1vrrmx3l0/DSCN0158.jpg) (http://postimage.org/image/1vrrmx3l0/)
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(http://s2.postimage.org/1vz0xtxlw/DSCN0159.jpg) (http://www.postimage.org/)
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Did some work on the Seekadett this weekend
JJS
(http://s3.postimage.org/2ds0sudl0/DSCN0239.jpg) (http://postimage.org/image/2ds0sudl0/)
(http://s3.postimage.org/2dsizr70k/DSCN0242.jpg) (http://postimage.org/image/2dsizr70k/)
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(http://s1.postimage.org/192lwd5j8/DSCN0246.jpg) (http://postimage.org/image/192lwd5j8/)
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You're welcome Kaspar!
Here is the direct link Peter - http://www.modelismonaval.com/foro/viewtopic.php?f=13&t=2631
If you look near the top of the home page you will find lots of little flags, click on the one for your country and it translates to your language--------------simples(http://i124.photobucket.com/albums/p8/DickyD_photos/aAn_MeerkatBaby-1.gif)