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Old 09-05-2012, 07:30 AM   #21
Tony Bird
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Hello again,

Final straight model to date. Video of test run in tank/storage box at:

http://s895.photobucket.com/albums/a...t=MVI_1574.mp4

Need for the weed to clear in local lake when it gets cold before a proper test. Had a bit of an issue with paint reaction.

Regards Tony.


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001 PW painting bolier parts LR.jpg   003 PW Painting hull reaction LR.jpg   03 PW R.C LR.jpg   005 PW Painting hull undercoat LR.jpg   006 PW Painting hull top coat LR.jpg  

007 PW Painting hull transfers LR.jpg   14 PW Fuel tray with Sterno LR.jpg   15 PW In steam LR.jpg  
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Old 09-05-2012, 11:48 AM   #22
Brian Rupnow
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That is just excellent craftsmanship!!! I love it.---Brian


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Old 09-06-2012, 04:48 PM   #23
Tony Bird
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Hi,

A water line has been added and the transfers varnished over so Polly Wog, Penbwl or Tadpole call her what you wish is now completely finished and ready to go! Well when the weed dies back in the local lake it can be tried out.

It has been an interesting build, I think it is heavier than the Boucher commercial version with its brass cylinders, flywheel, gear box and R/C equipement against the Bouchers aluminuim bits and no R/C. The article in Popular Mechanics promised 6mph for nearly a mile which means that it should only run for 9/10 minutes, we shall see, in the Boucher catalogue a run of 20 minutes (nearly 2 miles?) is claimed for their product. A new deeper tray for the Sterno has been made, if it doesn't run long enough I might fit a ceramic burner. If I do get it to the lake I will try and post a video of her performance.

Regards Tony.
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Old 10-10-2012, 10:02 AM   #24
Tony Bird
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Hi,

Polly Wog’s first Sailing.
Thursday 4th.October 2012.

We enjoyed the two weeks holiday meeting friends andplaying trains on the flat lands of the Netherlands but it is nice to get backto the hills and mountains of Wales.

Polly Wog was taken away with us in the trailer along with the railway layout, the intention being to give her her first sailwhile in the Netherlands. Alas thoughthere was certainly enough water and the weather was fine the high winds precluded any chance any of Polly Wog taking to the water. We left the Netherlands and spent the last few days away travelling through Belgium to the ferry that would take us home from France. So it was getting to look if Polly Wog wasn’t going to get her first sailing in mainland Europe just a1000-mile trip in a trailer! We arrived with our camper van along with its trailer and camped on the dockside in Calais ready for an early morning crossing to Dover in the next day.

While playing trains in the Netherlands our friends Elinor and Nick who after a holiday of some weeks in the Hartz Mountains of Germany came to help run our railway on their way home joined us. They were with us camping on the dockside before returning home to the UK via the tunnel. While walking on the front in Calais Nick and I passed a children’samusement park at the top of the beach. The park looked closed for the winter but a large portable pool was still full of water!

So Polly Wog was removed from the trailer R/Cbatteries fitted, her engine oiler up, fuel tray filled with Sterno and with water in her boiler she was taken to the pool. The pool was ideal its high sides protecting the water from very highwinds. First a bit of a problem the gas lighterwas empty! So a Tabac to get some form of ignition had to be found.

Having fired up the Sterno dispite cold high winds Polly Wog was soon making steam and was placed in the water.

How did she perform? Well she is quite fast giving her shape and weight. Alas the R/C rudder has very little control. The first very short video shows her first run in open water. The large propeller torque and a flat bottom turned her with the rudder in line with the hull, so some time was spent off setting the rudder to compensate for this. With the rudder off set she travelled in a straight line but with still not a lot of control. The second short video shows the tuning process, retrospectively it might be better to off set the propeller rather than the rudder to compensate for the torque of the propeller. The third video shows Nick in control? By now the Sterno is getting low and speed much reduced. It was getting cold and twilight was setting in and a meal and drink was needed so Polly Wog will have to wait for a larger rudder to be fitted before her next try in water. All in all I’m quite happy with Polly Wog's performance possibly not as fast as the 6mph claimed but fast enough.

Regards Tony

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Old 11-26-2016, 07:02 PM   #25
The_Paso_Kid
 
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Good Job on the boat Tony. My grandfather came across that same article many years ago and made a few efforts at building that outboard steam engine, with modifications, of course. Instead of building the lower unit he intended on using the lower unit from a small gas model outboard engine. Unfortunately the first engine he made he used the same bore size as the plans and the engine could not generate the power necessary to overcome the friction on the cable drive in that lower unit. So he built another with a larger bore size. We eventually built a third outboard engine using a single cylinder and piston type valve. See photos.
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Old 11-28-2016, 03:07 PM   #26
Tony Bird
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Hi,

Good Job on the boat Tony. My grandfather came across that same article many years ago and made a few efforts at building that outboard steam engine, with modifications, of course. Instead of building the lower unit he intended on using the lower unit from a small gas model outboard engine. Unfortunately the first engine he made he used the same bore size as the plans and the engine could not generate the power necessary to overcome the friction on the cable drive in that lower unit. So he built another with a larger bore size. We eventually built a third outboard engine using a single cylinder and piston type valve. See photos.

Interesting ideas. I particularly like the piston valve one.

Regards Tony.


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