[modeleng] Re: blast pipe
- From: Jon Mottershaw <j.mottershaw@xxxxxxxxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Sat, 24 Jun 2006 07:48:24 +0100 (BST)
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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