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Over - Under C:B ratio

Posted: Sat Jun 30, 2007 10:46 am
by nghiagero
hi guys,

im new to the spud cannon world though i've played around with a few mini spudders in my day. Anyway ive got an enquiery about the design of Over/Under Combustion spudders when it comes to the C:B ratio, i was wondering when calculating the volume of the Barrel does this include the connecting bend from the combustion chamber to the barrel underneath?

Posted: Sat Jun 30, 2007 10:56 am
by keep_it_real
The barrel starts where the potato is. Any area behind the potato that has fuel in it is considered the chamber. So in your case, yes it does.

Posted: Sat Jun 30, 2007 11:00 am
by nghiagero
ahhh i see, thanks for that