What engine is it? - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 01-28-2004, 12:00 PM   #11
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I am: jean c blouin
Join Date: Nov 2003
Location: Sherbrooke P. Quebec
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Well U guys tickled my curiosity
took apart one of my old OS 19 rc ( needed cleaning anyway )
it is identical to the pictures, sleeve and head bought mine in 1968
but the sleeve is 16.56 mm
so yours must be from a 15 or smaller os
mine is now in the crock pot
the .099 O/S Pet has 13.4 mm bore
my head is looking identical inside and out but it is machined not
cast fins like yours but same design and plug offset and brass insert
looks the same except for squarer fins, not rounded on top
your head looks more like my veco 19 head but it is not a veco
MAAC 5057 L
Jean. C. Blouin
CFI Club Aeromodeliste de l`Estrie
Skype jean.blouin
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Old 01-29-2004, 01:04 PM   #12
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Yes, I stand corrected. I got excited, panic'd and answered too soon . I find model engines even the older ones exciting and the best part of the hobby . I dissassembled both my .15 and my .19 to measure the bore. It is the .15. This family of engines are very much the same in design and appearance. The picture you have looks like the parts have been soda blasted. These engines from this series had a "black oxide"coating on the cylinder when new. The .15 had three of the six head screws used to hold the cylinder to the c'case, the Pet .099 I have use two of the four head screws to hold the cylinder on. This cylinder design was common in the day 'cause nobody could figure a way to inexpensively cast a bypass in a crankcase casting. Duke Fox had devised a way later on and used it exclusively. It made the engine lighter with a lighter cylinder assembly.
There is no such thing as a landing, it's a controlled crash.
Jim West MAAC 22948
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