[modeleng] Re: blast pipe

Interesting using the spreadsheet for blast pipe orifice size. I ran my Rob Roy 
through and got 0.18ins. which seems pretty close to actual but when I put in 
the ModelWorks 14XX I got a very different picture. The spreadsheet produced a 
figure of 0.35ins with a tractive effort of 42.1875 lbs whereas my vernier 
measures the orifice at 0.1562ins - a big difference! I will make up a second 
pipe and see what difference the change in orifice produces. Mott
alan stepney <alan@xxxxxxxxxxxxxxxx> wrote:  Ian Priest has prepared a simple 
Excel spreadsheet that works out the ideal 
blast pipe size and calculate stractive effort.
It can be found at or downloaded from:

http://www.alanstepney.info/blast.xls

Alan Stepney

http://www.alanstepney.info
Model Engineering & steam engine information pages

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