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Old 04-15-2002 | 01:31 AM
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Antique
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Default Race engines
The engine of choice is the Zenoah 445 twin...The good ones are turning close to 11,000 rpm in the air, about 175 mph..The Q75 is a close second..I don't know af any other engines being used at this time..The GR7 is winning all the races, but there will be some new Polecats this year, and maybe a few others..Check out the USRA web page at www.usra-racers.org for rules, pictures, and anything else you want to know..
I'm turning the two I have here at 11,000 rpm to test the carbs..
Engine spec goes to 81cc next year...
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