Paddleducks

Paddler Information => Research => Topic started by: Benji on February 20, 2018, 04:18:42 AM

Title: Paddle wheel to engine size
Post by: Benji on February 20, 2018, 04:18:42 AM

Howdy all!

  Is there a standard ratio of wheel size to engine stroke on sternwheel boats?   Ive been trying to determine this for a model I am working on to get the correct dimension for the crank and for the model of the lever engine.  It appears that the kit has an incorrect crank, and I am trying to find what size stroke the engine would have for a 15 ft diameter wheel.

Benji

Title: Re: Paddle wheel to engine size
Post by: Bierjunge on February 20, 2018, 07:57:33 AM

A standard ratio between engine stroke and wheel diameter would be 1:3.
There are many more typical ratios for western river steamboats, all derived from piston diameter, in Alan bates highly recommendable book "The Western River Steamboat Cyclopoedium".

Moritz

Title: Re: Paddle wheel to engine size
Post by: Benji on February 20, 2018, 10:56:57 AM

Thanks!   I thought it may of been a ratio similar.

I have both of Bates's books.  I had to go looking again, and sure enough, I missed the table of ratios he had.