discussion aussie sidewheeler

[Guest]

I made this model boat several years ago.Had no plans ,some photos only.Neverheless it happens the model is conformable to real Murray River steamer Alexander Arbuthnot. It is about 1 meter long 20/38 cm breadth and round 6 cm draft. Weight 5-7 kg. The hull is plywood/wood construction,the superstructures by plywood, RC.It is built as a trial model mainly. so that several items are simply built(paddlewheels mainly ,but they works perfectly)

Model "Ned Kelly" ( when build up the ship ,the biggest problem is her name,the next things are not to be worth while) is powered by live steam engine , 2 cylinders, by Wilesco. I am satisfied with it except the boiler-too small for 2 cyl. engine and long trips expected.

The PB burner is fed direct from PB cartridge with throttle valve , as I had problems with refilling the original little gas tank ,due its preheating during operation. The maiden voyage was done, but the model expects new boiler at present.

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[Guest]

any chance of some pic`s tomarack

sounds like a great project, feel free to post all the pics you need

Adz..

 

[Guest]

some troubles with pics sending. wait,please Tom

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[Guest]

Very interesting project Thomas. The issue of gas pressure drop due to evaporation cooling of the liquid gas is an age old one and there have been a number of ideas to counteract it.

I know a fellow boater at my club who has put his gas tank in the same small insulated compartment as his exhaust separator so the heat transfers across. I have used a physical copper strap between my exhaust separator and gas tank and I raise initial steam pressure from an outside tank but I don't know yet how successfull the strap set up will be until I try it. It is definately something that requires some thought and means of addressing otherwise it will adversely affect the performance of your model and reduce it's duration, especially in Winter.

 

[Guest]

Had no posssibility to make bigger gas container, so I prefer gas cartridge now.Due to little consumption of PB gas the temperature drop isn´t worth to talk about at present.Nevertheless the gas regulation with only one thhrottle valve isn´t ideal.The original gas tank by Wilesco has a little dimension and gets too hot during cycle, so that the next re-fill was practically impossible.

 

[Guest]

You have a Private Message Tom.

 

[Guest]

I show here two main representatives for my model of aussie sidewheeler-e.g. P.s. Pevensey and P.s Alexander Arbuthnot from Murray River,( Echuca,Victoria, Australia)

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[Guest]

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[Guest]

Thomas, I think I misinterpreted your initial post as i now see that you were indicating that you gas tank gets too hot rather than cools down.

This obviously has significantly more concerning consequences than simply finding it difficult to fill. Are you saying that the gas tank gets hot in service? If this is the case you need to determine why and seriously reduce the effect before you sail her again.