Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Steam => Topic started by: markymar93 on June 29, 2014, 11:36:53 pm

Title: help with steam engine
Post by: markymar93 on June 29, 2014, 11:36:53 pm

Hi
I don't know if anyone can help me.  I am a longtime aeroplane modeller and recently into boats.  I have just about finished my first boat and I have just bought my next project, which is a steam tug.  I bought the boat part built and it needs a full strip down and rebuild.  As part of this, the boat did come with a home build steam engine.  I have to confess that I am a little out of my depth with the engine and wondered if there is anyone who can help me work it out?

Many thanks

Title: Re: help with steam engine
Post by: Mad_Mike on June 29, 2014, 11:48:19 pm

got any pics of this engine :o

Title: Re: help with steam engine
Post by: markymar93 on June 29, 2014, 11:53:18 pm

Hi
I have attached a pic of the boat which also has the engine.  I will try and attach a few more pics of the engine.  I am also trying to identify the boat, as I will be rebuilding the boat as well.

Many thanks

Title: Re: help with steam engine
Post by: Mad_Mike on June 30, 2014, 12:15:10 am

do you know anything about the boiler? what it made from, what its soldered with and if its been hydraulic tested?

Title: Re: help with steam engine
Post by: markymar93 on June 30, 2014, 06:15:00 pm

Hi

There are actually pics of the engine under the general boat section.  I will see if I can post them on this page tonight as well.

Many thanks

Title: Re: help with steam engine
Post by: hammer on June 30, 2014, 09:15:45 pm

Engine a V twin oscillator, the boiler very interesting!!!! Looking out for more pics.

Title: Re: help with steam engine
Post by: markymar93 on June 30, 2014, 10:46:34 pm

I will attach a few pics in the next few messages
(http://i647.photobucket.com/albums/uu194/markymar94/IMAG1156.jpg) (http://s647.photobucket.com/user/markymar94/media/IMAG1156.jpg.html)

Title: Re: help with steam engine
Post by: markymar93 on June 30, 2014, 10:47:32 pm

next pic
(http://i647.photobucket.com/albums/uu194/markymar94/IMAG1157.jpg) (http://s647.photobucket.com/user/markymar94/media/IMAG1157.jpg.html)

Title: Re: help with steam engine
Post by: markymar93 on June 30, 2014, 10:48:07 pm

next pic
(http://i647.photobucket.com/albums/uu194/markymar94/IMAG1158.jpg) (http://s647.photobucket.com/user/markymar94/media/IMAG1158.jpg.html)

Title: Re: help with steam engine
Post by: markymar93 on June 30, 2014, 10:48:51 pm

next pic(http://i647.photobucket.com/albums/uu194/markymar94/IMAG1159.jpg) (http://s647.photobucket.com/user/markymar94/media/IMAG1159.jpg.html)

Title: Re: help with steam engine
Post by: markymar93 on June 30, 2014, 10:49:26 pm

next pic(http://i647.photobucket.com/albums/uu194/markymar94/IMAG1161.jpg) (http://s647.photobucket.com/user/markymar94/media/IMAG1161.jpg.html)

Title: Re: help with steam engine
Post by: markymar93 on June 30, 2014, 10:50:00 pm

final pic
(http://i647.photobucket.com/albums/uu194/markymar94/IMAG1164.jpg) (http://s647.photobucket.com/user/markymar94/media/IMAG1164.jpg.html)

Title: Re: help with steam engine
Post by: Jerry C on July 01, 2014, 08:45:33 am

A puzzle. Is this a V-twin piston valved double actor with a gear driven feed pump between the cylinders? It's not a wobbler, but why are the cylinders different? Is it a compound? Is there a controller, or does it just let rip?
            The boiler appears to be a twin drum water tube boiler but where does the fire go? 
        The hull looks like a planing type and the flywheel has a chord groove around it.   Maybe some sort of high speed steam launch.  Someone knows.
Still puzzled.
Jerry. 

Title: Re: help with steam engine
Post by: markymar93 on July 01, 2014, 09:36:21 am

I am hoping someone can help me.  I would love someone to give me a hand to see if the engine can run.  Although, for the size of boat, it will need some sort of throttle and reverse control.  I cannot see how it can be controlled on the engine.

Title: Re: help with steam engine
Post by: derekwarner on July 01, 2014, 10:20:57 am

The issue of posting two questions about the same issue on different threads......... :-)

____________________________________________________________________________________________________

That's also opened the door for a whole load of different engine parts  :o

The STDB cylinder has eight sets of round head screws & nuts top & bottom securing the caps to the barrel flanges
The PORT cylinder has what appear to be six long cheese head screws from the top of the top cap down through the cylinder barrel to the bottom cap & terminated with nuts.......

I wonder which was the original version?...........Derek

Title: Re: help with steam engine
Post by: geoff p on July 01, 2014, 01:54:57 pm

Like Jerry, I read it as being a compound.

The exhaust from the Right-hand cylinder is re-heated before entering the Left-hand cylinder, and its larger-bore possibly doesn't leave enough room for screws-and-nuts.

It looks as though the single valve atop the boiler passes steam to (probably) a drier tube or even that coil in the "funnel", hence the string-insulation on the main steam-line to the engine.

Geoff,
Thailand

Title: Re: help with steam engine
Post by: hammer on July 01, 2014, 09:43:18 pm

I was way of the mark should have waited for the close-ups. 

Title: Re: help with steam engine
Post by: markymar93 on July 02, 2014, 11:03:52 pm

I do appreciate all the pointers people are giving.
thanks mark

Title: Re: help with steam engine
Post by: markymar93 on July 03, 2014, 06:07:09 pm

Hi

I just wanted to thank everyone for there help.  I have just bought a Robbe Odin and am thinking I may sell the steam boat as I think the Odin will take some time to build lol.

thanks

Title: Re: help with steam engine
Post by: Geoff on July 22, 2014, 02:17:15 pm

As a thought I wounder if the boiler is "flash steam" given the multiple tubes (continuious tube) visible in the boiler and the engine driven water pump?
 
If it's flash steam I think you don't require a pressure test certificate.
 
I suspect one of the pistons has been replaced hence the different cylinder design?
 
Such being the case it may originally have come out of a flash steam hydro?
 
Enjoy
 
Geoff