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  #1  
Old 05-17-2017, 06:08 PM
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ExtraKatana ExtraKatana is offline
 
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Default With your IO-360 and CS Hartzell Prop

What MAP and RPM and airspeed....do you flatten the prop in the pattern?
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  #2  
Old 05-17-2017, 07:41 PM
g zero g zero is offline
 
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Default Prop

I usually don't touch it til short final
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  #3  
Old 05-17-2017, 07:59 PM
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scrollF4 scrollF4 is offline
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For straight-ins, I leave mine alone until short final.

For overhead pitch-outs (formation work, etc.), I don't go full RPM until on downwind when I'm a few seconds from the abeam point and want to slow down. That's when I go full RPM and throttle back to slow for flaps 20.

Like political opinions, everyone has a technique, and this technique is mine. Hope it helps.
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  #4  
Old 05-18-2017, 05:04 AM
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ExtraKatana ExtraKatana is offline
 
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ah, so I am assuming 10" - 12" of MAP when one is throttling back before going to full RPM.
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Old 05-18-2017, 05:37 AM
6 Gun 6 Gun is offline
 
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Default Prop

Let the engine drive the prop and not the prop drive the engine.High rpm and low MP can cause piston slap Lycoming says best to keep above 15"mp at high RPM.
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Old 05-18-2017, 05:50 AM
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RV6_flyer RV6_flyer is offline
 
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Quote:
Originally Posted by g zero View Post
I usually don't touch it til short final
Sounds like the way I have been doing it for the past 20-years.

Typically I find ~15" MAP needed on downwind if flying a rectangular pattern at any RPM.
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  #7  
Old 05-18-2017, 05:56 AM
BillL BillL is offline
 
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Quote:
Originally Posted by ExtraKatana View Post
ah, so I am assuming 10" - 12" of MAP when one is throttling back before going to full RPM.
That is the way Mike Seager teaches in transition training. Abeam of the touch down point in a standard pattern, so like others pretty late, just before descent. Then he had me hold 1800 rpm on descent until crossing the threshold.
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