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Old 02-17-2002 | 07:26 AM
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Antique
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From: Somewhere, DC
Default US 41
A US 41 tached today turned a 22-8 Mejzlik 6000 rpm..
Same engine, 5 minutes later, same prop, with a WT76 carb,1/16 larger diameter, turned the same rpm..Some engines respond better than others..
22-8 at 6000 shows about 25 lbs thrusat on the ThrustHp chart
18-10 at 7700 rpm shows about 18 lbs thrust on the same chart..
A 22-10 Zinger shows 34 on the chart, 28 on a spring scale hooked to the tail wheel of a plane....
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