Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Bonjour Bruce,

I test all my boats in my bathtub as soon as they measure less than 1,37 m, limit with the emptying system.

For fun, another long boat :

But also a "fast' one with a compound JMC :

Bad luck, my last "fast" boat measures 1,40 m :

And another powerful one with a Stuart D10 plant :
 
With these tests, I find possible issues (leaks,...) and note their average autonomy.