Bush Loco#2 build (Twin Boiler)

[RobM-W]

I thought some here may be interested in a recently completed scratch build of a Twin Boiler Bush Loco.

 

[Neil Robinson]

Oooh, that's different!
Was there ever a prototype for that arrangement?
Edit. Ah, just watched the video, it appears that there was indeed a prototype.

 

[dunnyrail]

I thought some here may be interested in a recently completed scratch build of a Twin Boiler Bush Loco.

What an exquisite little dragon. Reminded me a lot of the early experiments with bodged up Mamids incorporating gears, new boiler and revisions much as you have done but to create very nicely an obscure bush prototype. Definitely fits in with your backwoods bush like line.

 

[Madman]

Oooh, that's different!
Was there ever a prototype for that arrangement?
Edit. Ah, just watched the video, it appears that there was indeed a prototype.

The very start of the video shows a prototype.

 

[Wobbleboxer]

What was the need for 2 boilers, just to get enough steam presumably? And a bigger boiler wouldn't fit?

 

[PhilP]

Possibly, what was available, and a boiler may have been beyond 'Bush-engineering' at the time?

 

[Paul M]

Wonderful

 

[GAP]

The quality of the engineering does not fit with the name of the railway.

A masterpiece is how I would describe the loco.

 

[RobM-W]

What an exquisite little dragon. Reminded me a lot of the early experiments with bodged up Mamids incorporating gears, new boiler and revisions much as you have done but to create very nicely an obscure bush prototype. Definitely fits in with your backwoods bush like line.

Bushy #1 is exactly as you describe... a hodge podge of parts based on a Mamid (Mamod) TE1A.

 

[dunnyrail]

Bushy #1 is exactly as you describe... a hodge podge of parts based on a Mamid (Mamod) TE1A.

Another interesting Dragon, but I am a little confused about the Piston on top of the boiler that has a wheel the other side that changes direction at random. Is this a movie thing or is something else going on?

 

[Paradise]

Another interesting Dragon, but I am a little confused about the Piston on top of the boiler that has a wheel the other side that changes direction at random. Is this a movie thing or is something else going on?

I think it is like an old cowboy movie with the cart wheels appearing to go backwards. The video frame rate is a tad faster than the RPM of the piston (or a multiple of that). It then appears to be going backward.
Like a timing light when adjusting the distributor on a car. Don't stick your fingers into the fan dunnyrail.

I could perhaps assume that the piston crank is about 1500 RPM when it appears still in the video (@25FPS). That's a lot of gearing down to be done therefore all the reduction gears to the axle.

 

[Northsider]

That's an inspiration, and very much in the spirit of the original loco!

 

[tac foley]

Utterly bind-spelling!!! What an inspiration to folks who say that they could never build anything, as well. Mind you, a LOT of experience has gone in to producing that fearsum little engine*, that's for sure.

* apologies to Iain M Banks.