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RCFlyerNYC 03-19-2002 10:12 PM
Engine number
 
I should know this but I don't. What does the engine number (ex. OS 46) represent?

flatfour 03-19-2002 11:35 PM
Engine number
 
Engine displacement in hundredths of a cubic inch. So your example OS46:

46/100 cubic inches (Roughly 7.5 cubic centimeters)

Usually you will see them as .46

ChuckAuger 03-19-2002 11:41 PM
Well, you asked...
 
In your example, the 46 represents .46 of a cubic inch.

By the same token, if you had an OS 120, it would be 1.2 cubic inches, but....

If a guy was talking about a BME 44, it wouldn't be .44 0f a cubic inch, but 44cc's, and if a guy had a ZDZ 120, it wouldn't be 1.2 cubic inches, but 120cc's. :eek:

So that is the short version...just remember that there are roughly 16cc's to the cubic inch, so .46 X 16=7.36cc's...and you might see a guy with a K&B 7.5 ducted fan engine..it is a .45 cubic inch, not 7.5 cubic inches...that would be a 120cc :D

(all conversions are rough figures!)

Happy to confuse you!

RCFlyerNYC 03-20-2002 01:10 AM
Engine number
 
I'm soooooo confused!!
Thanks Guys
Jeff


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