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Flap Reflex

 
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Albert Gardner



Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

PostPosted: Sat Aug 01, 2015 10:24 am    Post subject: Flap Reflex Reply with quote

Quote:
On a long flight at 10,500' between CAG and INW it was so smooth I thought I would play around with the flaps. Kept droping them a bit at a time and it looks like I picked up about 5 kts with them down about 2 deg from the full up reflex position. What are others experience with this?Albert GardnerRV-10 N991RVYuma, AZ

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partner14



Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas

PostPosted: Sat Aug 01, 2015 12:58 pm    Post subject: Flap Reflex Reply with quote

I've played with the flaps in cruise also... found similar. But it seems like with most everything relating to the 10..... it depends..... on speed, power settings, wind direction, altitude, bp, what day of the week, or how many on board. I'm sure there's an altitude range that having the plane in reflex provides the best result.... but I don't think it's above 8,000 feet.

Don McDonald
Just moved in to our new airpark home in Pecan Plantation, Granbury, Texas.

From: Albert <ibspud(at)roadrunner.com>
To: rv10-list(at)matronics.com
Sent: Saturday, August 1, 2015 1:20 PM
Subject: Flap Reflex


Quote:
On a long flight at 10,500' between CAG and INW it was so smooth I thought I would play around with the flaps. Kept droping them a bit at a time and it looks like I picked up about 5 kts with them down about 2 deg from the full up reflex position. What are others experience with this?Albert GardnerRV-10 N991RVYuma, AZ

ronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
matronics.com/">http://forums.matronics.com
ronics.com/contribution">http://www.matronics.com/contribution







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Bob Turner



Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

PostPosted: Sat Aug 01, 2015 4:18 pm    Post subject: Re: Flap Reflex Reply with quote

I tried going back and forth from full up (reflex) to first notch (in trail, or zero deg).
14500', density alt 16,000'
LOP at 9 gal/hr, WOT, 2400 RPM, 159 KTAS
2 adults plus bags

I couldn't see any difference in speed. Maybe next time I'll try an in between setting.


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PostPosted: Mon Aug 03, 2015 2:35 am    Post subject: Flap Reflex Reply with quote

I played with them too and recorded some numbers since lost.  My conclusion was similar to Don's except I would have said "...I don't think it's above 10,000 feet".

Between 7 and 9k where I spend most of my time, I use them 100% of the time in cruise.

On 8/1/2015 4:54 PM, Don McDonald wrote:

[quote] I've played with the flaps in cruise also... found similar.  But it seems like with most everything relating to the 10..... it depends..... on speed, power settings, wind direction, altitude, bp, what day of the week, or how many on board. I'm sure there's an altitude range that having the plane in reflex provides the best result.... but I don't think it's above 8,000 feet.



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