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Old 03-29-2005 | 11:14 PM
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campbec
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From: South West Rocks N.S.W., AUSTRALIA
Default RE: Cooling a 2-stroke

Hi casey,

Do you realise the war bird police will come and take you away if you put a two stroke in a war bird? Your family will never hear from you again.

In this case the ideal would be a dummy radial with one cylinder removed in line with the barrel of your motor and exit holes in line behind with a ratio as close to 1/3 front opening and 2/3 rear vents. I know it sounds counter intuitive but if you leave the whole front open the air doesn't flow past the barrrel and the motor will overheat. You may need to experiment with ducting to get sufficient cooling air flow. Don't forget to run the motor a bit rich to aid cooling and this is one of the few instances I would recommend some castor in the mix as lean run insurance.

Cheers,

Colin