Discussion in 'Chainsaw' started by pa.hunter, Dec 13, 2008.
anyone have a chart all piston mm and i only have mics thousands
My 30$ napa Storm digital caliper does it for me. there has to be a chart like that on the internet...Google it.
inches X 25.4 = mm
mm / 25.4 = inches
glad to help. anyone have a lathe, mill, drill press, surface grinder, small heat treat furance, and a band saw that they want to give away? then maybe I can put some of my knowledge back to work.
you had me until the "give away" part:greenchainsaw:
ok ok, I have a couple buckets of saw dust that I could trade... heck if someone filled the bill I might even throw in a 361 or 660(only if the lathe and mill had dro)
I bet he'd be happy to "borrow" them too!
Metrics is easy. 1 inch = 2.54 cm. 1 mm = 1/10 cm. 2.54 cm = 25.4mm.
1cc = 1 ml also.
We used .0394 times by or divided by the MM to get either inches or MM. 25.4 will work for small stuff but we worked with parts that were 20' long and longer, the difference a few thou for the conversion using 25.4 was more than was allowed and the part would be off...Bob
Exp. on a 20' part.
20' x 12 = 240" x 25.4 = 6096 mm
20' x 12 = 240" divided by .0394 = 6091.370xxx mm so the part would be more than 5 mm off and would be scrap. Thats like being a 1/4" off.
Just my thought. But i doubt if anyone is running a 6000 mm piston ...Bob
1"/25.4 mm = 0.03937007874 That's 7 significant figures more accurate than 0.0394 conversion you stated.
The 5mm you are off is due to rounding the conversion to 3 significant figures.
40thou = 1mm is close enough for most small measurements like clearances.
This thread is funny...
The world standard is the Meter....everything is taken from that.
google is also your friend it has a built in calculator - go to the home page and in the search bar just put what you want to convert in ..i.e.
5mm in inches
34 miles in kilometers
500 cubic inches in cubic yards
18 degrees centigrade in fahrenheit
my wife uses it a lot in cookery too !
Hope this helps someone :greenchainsaw:
I am supprised to not find this book mentioned anywhere when I searched. Ten dollars and 768 pages of info.
Did anyone check this out?
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