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Old 10-15-2015, 02:02 PM
  #30205  
FNQFLYER
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Why is it that people running big pitched props when confronted with higher than normal sped landings refuse to go to a lower pitch prop. In Texaco we aim for around 5000 rpm for a 4 to 4.5 pound model. This means usually that the engine runs primarily on the LSN with a smidgen of HSN. Slightly larger pitch props (such as x 6 or x 7 or bigger) can be used for better thrust BUT when the same prop is used in a sports application (same engine but bigger rpm) the result is a faster a/c all round. De pitch to a x 5 or 6 and the engine is more manageable in the powered landing mode. (BTB our old timer a/c are always landed "dead stick"). I watched this situation yesterday with both sports and o/t a/c same engine in both same prop fitted to both. The guy has some 20 years experience so what do I know. Comp on the w/end YS is still a problem (1) and the other is in bits, so I guess a 50% fuel mix for the Saito 65 in the 85% Bomber is beckoning if it survives today's testing.