Model Engineering In Thailand and South East Asia

Building A 6″ Scale (Half Full Size) Little Samson Traction Engine In Thailand

My one mission in life is to build a large model steam traction engine and drive it from our house here in Pak Chong, Thailand, to the local “pub”.

This is one big undertaking and I understand that.

But bear in mind that the full size Little Samson traction engine is small compared to say a Fowler or a Foster.

The 6″ Little Samson is about the same size as a 4″ scale Foster or Fowler.

Here is a simplified comparison table:-

6″ Little Samson   4″ Foster 6NHP   MJ Fowler A7
Item Inch mm   Inch mm   Inch mm
Flywheel 18 457 18 457 18 457
Front Wheel 18 457 15.5 394 15.5 394
Biggest Gear 19.5 495 14 356
Rear Wheels over the strakes 29 737 24 610 24 610
Boiler Barrel 12 305 9.7 246
Overall Length 6’ 10”” long 82 2,083 72 1,829 68 1,727
Cylinder Bore 2.625 2.75 70
Stroke 2.125 4 102
Weight 17 CWT 850 kg 8.6 CWT 3 CWT

I just knocked that up in five minutes and although the dimensions are comparable the weights certainly aren’t. I’ll have to look into the weights in a bit more detail because they don’t ring true to me.

 

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