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Comparing RF4 and Rf5 propellers on 1400cc RF4 printer friendly version
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Bob Grimstead

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Location: Perth, Western Australia or West Sussex, England
Registered: Dec 2006
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Posted Thursday, July 3, 2008 @ 11:16 AM  

9th March 2006, Temp 30C, QNH 1010 HPa
VH-HDO 1400cc engine.
Standard Hoffmann 133/70 propeller, no spinner, 17 litres fuel (aerobatic weight)
Take-off rpm 3,200
Climb 500-1,500 feet 1:47 @ 60 knots and 3,200 rpm = 560 fpm
Max IAS 100 kts @ 4,000 rpm

9th March 2006, Temp 30C, QNH 1010 HPa
VH-HDO 1400cc engine.
RF5 Hoffmann 145/B/80 propeller, no spinner, 16 litres fuel (aerobatic weight)
Take-off rpm 2,800
Climb 500-1,500 feet 1:34 @ 60 knots and 2,850 rpm = 638 fpm

Yours, Bob

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