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Rum Runner – a build log
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Jim


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PostPosted: Fri Jul 07, 2017 3:58 am    Post subject: Reply with quote

What a fantastic build thread.
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P750


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PostPosted: Fri Jul 07, 2017 12:29 pm    Post subject: Reply Reply with quote

Thanks Jim. All the auxiliary components are in place and tested at this time. Now comes the interesting part – all things steam related.
V.P
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P750


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PostPosted: Fri Jul 07, 2017 6:15 pm    Post subject: Steam Engine Mount Reply with quote

Steam Engine Mount:

This mount is designed in a way that would lift or lower the engine by about 4mm. In the lowered position, the engine pinion makes contact with the large main drive shaft gear outside the gearbox. In the up position, this meshing contact is lost which enables motoring around under electric power without turning over the steam engine (saving the bearings). Lifting and lowering is done manually by turning 4 bolts – visible in the photos.



The mount consists of 2 rectangular plywood pieces (stained and waterproofed). The bottom piece is bolted to the hull. The top piece has the steam engine bolted to it. The two pieces are connected by 8 bolts seen on the top plate. 4 bolts (chrome heads and no washers) increase or decrease the gap between. 4 bolts (black heads with washers) lock the pieces together. This setup is seen below. (Note: only two chrome heads and two black head bolts are seen in this view).



The next photo shows the Steam Engine in place between the gearbox and rudder servos. The ‘valve timing’ and ‘on/off valve’ will have connections to two servos mounted on the sides (not very visible in the photo).

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jkbixby


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PostPosted: Fri Jul 07, 2017 7:44 pm    Post subject: Reply with quote

Lord, give me strength.......this build thread is hard on my head getting it around all these great ideas but I love it! Looking forward to whatever wonderfulness is coming next!
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P750


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PostPosted: Sat Jul 08, 2017 11:17 am    Post subject: Boiler Mount Reply with quote

Boiler mount

The Boiler will sit just before the gearbox (above the electric propulsion motor) on a spring mount for a scale like appearance. The deck will have to be designed around it while keeping it visible. The spring mount is attached to a rectangular piece of plywood platform (stained and waterproofed) which in turn is bolted to support frames connected to the main hull frame or chassis.

The first photo shows the mounting hardware.



The next photo shows the frames coming up from the main hull chassis and the wooden platform which supports the Boiler spring mount. The electric propulsion motor is also seen below the Boiler through a ventilation port.



The following 2 photos show different angles of the mounted Boiler.



The fire box and fuel tank will also sit on the Boiler platform in the bow (in front of the Boiler). Its construction will have to include fire retardant material (with full fire containment). The Bow Thruster sits below this.



The Bow Thruster controller can be seen off to the side. All wiring at this time is free floating. It will probably be the last thing that gets buttoned down. The three chrome looking straps on the boiler will probably look better if changed to brass straps (will leave it for now).
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P750


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PostPosted: Sun Jul 09, 2017 1:14 pm    Post subject: Major Steam components Reply with quote

These are some photos of both Boiler and Engine in their respective locations. Major steam components are now in place.





The pressure gauge on the Boiler will have to be changed at some point to keep with the scale theme.





With the raised freeboard, the height of the engine mount may need to be increased further (better visibility of the crank shaft). The main problem with this is the coupling between the engine pinion and drive shaft gear. Placement of the engine will dictate the final steam piping scheme. Increasing the height may also introduce an undesirable rolling motion due to the higher CG.
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Canuck


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PostPosted: Sun Jul 09, 2017 1:18 pm    Post subject: Reply with quote

Lovely original build going on here.

Nicely done.
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The Denying Dutchman


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PostPosted: Sun Jul 09, 2017 6:29 pm    Post subject: Reply with quote

I love the woodwork!
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gen3v8


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PostPosted: Mon Jul 10, 2017 10:22 pm    Post subject: Reply with quote

The wood work is good but it`s nothing compared to the marvel of engineering
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P750


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PostPosted: Tue Jul 11, 2017 5:37 pm    Post subject: Reply Reply with quote

Thanks Guys for reading and giving feedback. Really appreciate it.

I have just got back from vacation where I spent time doing these forum posts. Now that I am back, we will have to start work (on the boat) again. The postings till now have been work completed. From this point on, it will be postings of work as things progress (much slower pace).

One interesting note while on vacation ……. I was able to observe a ‘side paddle’ steamer on the Brienz lake in Switzerland (don’t have much of this class of steamers here in the US). The interesting aspect was the running of this 1914 steam engine with regards to movement of the controls during starts/stops/reversing operations and how that would translate to running of my model. Did take some videos – may post once I figure out how.

Starting tomorrow, will work on completing the top of the railing (upper edge of the freeboard).

V.P
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Steam Models


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Joined: 21 Sep 2010
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PostPosted: Sat Jul 15, 2017 4:42 pm    Post subject: Reply with quote

Well I've got to take my Hat off to yah.

I only saw this today.

There's so much work gone into this build,  ...  just reading about it makes my head feel sleepy.

(I'm gunna need a holiday.)

The engine lifting up and down, bow thrusters, a vp pitch propeller, a braking rudder, a reduction gearbox.

Gosh! ... I couldn't have done all of that, it's a credit to your work and dedication Sir.
And all the work has been so well done    I'm in disbelieve  ....  I'm speechless.
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P750


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PostPosted: Sun Jul 16, 2017 4:08 am    Post subject: Reply Reply with quote

Thank you Les. Always nice to read comments…….. and even as I sit here typing, it just struck me that I better drill some holes along the deck edge (before installing the top lip railing) …. if, I want to put deck lights  
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P750


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PostPosted: Tue Jul 18, 2017 3:29 pm    Post subject: Lighting scheme Reply with quote

Lighting scheme ……..

We need lights. This will certainly add to evening/night steaming or during static display. Which means, we need to work out the main components of the lighting scheme.

1) LEDs or Incandescent lights?
2) Power source?
3) Placement.
4) Wiring.

I am thinking that Incandescent lighting is the way to go. The output spectrum is more pleasing. The wires are manageable with regards to size. The bulbs (16volts) are more scale like and freely available. The circuits running at 16volts will have less voltage drop at the end of the line - due to internal resistance (as opposed to running 1.5v or 3v).

Power source: 4 cell LiPos would be a good source delivering 1550mah. At an output of 16v, the bulbs could be used without resistors. Running at multiple voltages could be accomplished by taping off the ‘balance’ lead. The high capacity of LiPos will be ideal to support the current draw (as in many bulbs used in different configurations). Did think about coupling a generator to the steam engine or drive it directly from the boiler (as in a turbine/generator). The limited output may curtail the number of bulbs used. Further, illumination would only be possible when ‘steams up’ – problem for a static display.

Placement: Deck lighting is always nice. They can be hidden below the top railing while providing illumination to light up deck structure. Other circuits could be used to provide illumination for the Boiler and Engine – light them from below deck level. Could use a search light or two. Nav lights, Flag lights etc.

Deck lights = 24 bulbs (30ma x 24 = 720ma)
Boiler lights = 6 bulbs (30ma x 6 = 180ma)
Engine = 4 bulbs (30ma x 4 = 120ma)
Gearbox = 4 bulbs (30ma x 4 = 120ma)
Nav lights = 4 bulbs (30ma x 4 = 120ma)
Other lights (cabin) = 4 bulbs (30ma x 4 = 120ma)

Total draw = 1380ma (about 89% of the total 1550mah battery). If all the bulbs are installed, that would be about 1hr of lighting on the water – enough for the job.

Wiring: This needs to be planned. Otherwise, we would end up with a big unmanageable mess with a total of 46 bulbs. Using primary power bus lines would be a solution for deck lighting (instead of a ‘star’ distribution scheme). Probably a second power bus for other circuits.

I guess the ‘Rum Runner’ is going from stealth operations to one involving deception. I suppose we could always turn the lights off, and run ‘silent’ – just not under water, I hope!!

Following photo show the bulbs that have been tested (seem to have the right attributes):

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gen3v8


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PostPosted: Wed Jul 19, 2017 1:31 am    Post subject: Reply with quote

I can`t wait to see this. At my boat club we have a night run or two a year. The last two were ruined by bad weather  
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MrMamod


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PostPosted: Wed Jul 19, 2017 7:26 pm    Post subject: Reply with quote

I did stop following this thread as the damn drool was ruining my laptop BUT what the hell I got a birthday coming up soon    
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