New Irvine 53 from OS
#1
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Join Date: Sep 2005
Location: sittingbourne, UNITED KINGDOM
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Hi ive just run up my os/irvine 53 wth a 12x6 apc prop on 10pc nitro. i`m getting 10600rpm. its very quit and runs smooth
i also have a brand new real irvine 53 ( made in england) that i will compare figures with...
#2
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Ive now just stuck a gruapner 11x6 on and getting 12300rpm...still very smooth and quite compaired to my os50sx..
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The finish is very good...The bearing sizes are now the same as the os50sx. the exhaust is a few millimeters smaller than the original ervine. Visualy its nearly the same apart from the carb. The colour is of a lighter red. It does seem a very nice engine but it needs some hours on it to compaire it to the originaal irvines as the original ervines had a proven track record.