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What flap setting do you use for takeoff

 
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amekler



Joined: 07 Oct 2010
Posts: 164
PostPosted: Fri Dec 09, 2016 4:27 pm    Post subject: What flap setting do you use for takeoff Reply with quote
I have been using no flaps for my 5000 ft home runway and partial flaps for short runways. What do other people use?
Alan
N668G
400 hrs

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cooprv7(at)yahoo.com
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PostPosted: Fri Dec 09, 2016 4:55 pm    Post subject: What flap setting do you use for takeoff Reply with quote
I use partial flaps for all takeoffs, about 20%. Most times I’m sure it’s not necessary, but keeping as many things the same seems like a good habit and I can’t think of a reason not to use them.

Marcus
800 hrs

On Dec 9, 2016, at 7:26 PM, Alan Mekler MD <amekler(at)metrocast.net> wrote:



I have been using no flaps for my 5000 ft home runway and partial flaps for short runways. What do other people use?
Alan
N668G
400 hrs

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carl.froehlich(at)verizon
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PostPosted: Fri Dec 09, 2016 5:05 pm    Post subject: What flap setting do you use for takeoff Reply with quote
Same as you.

Carl

Quote:
On Dec 9, 2016, at 7:26 PM, Alan Mekler MD <amekler(at)metrocast.net> wrote:



I have been using no flaps for my 5000 ft home runway and partial flaps for short runways. What do other people use?
Alan
N668G
400 hrs





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dmaib@me.com



Joined: 25 Apr 2006
Posts: 454
Location: New Smyrna Beach, Florida
PostPosted: Fri Dec 09, 2016 5:35 pm    Post subject: What flap setting do you use for takeoff Reply with quote
Same as you. Alex DeDominices demonstrated to me that flaps fully retracted resulted in a shorter takeoff,during transition training. I tried a few different combinations and techniques during phase 1 and came to the same conclusion. I do use partial flaps on rough/sod runways just to get the load off the gear asap.

David Maib
Quote:
On Dec 9, 2016, at 7:26 PM, Alan Mekler MD <amekler(at)metrocast.net> wrote:



I have been using no flaps for my 5000 ft home runway and partial flaps for short runways. What do other people use?
Alan
N668G
400 hrs





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PostPosted: Fri Dec 09, 2016 6:34 pm    Post subject: What flap setting do you use for takeoff Reply with quote
Okay, that's what I do; fully retracted (no reflex) for normal takeoffs,
partial flaps on rough/sod runways like my home strip. So roughly half
my takeoffs are with partial.

But I can't make sense out of retracted flaps resulting in a shorter
takeoff. Seems possible yet unlikely but I have nothing to back that
up. Comments? Technique?

Bill "knowing I should just go out and get some numbers" Watson

On 12/9/2016 8:34 PM, David Maib wrote:
Quote:


Same as you. Alex DeDominices demonstrated to me that flaps fully retracted resulted in a shorter takeoff,during transition training. I tried a few different combinations and techniques during phase 1 and came to the same conclusion. I do use partial flaps on rough/sod runways just to get the load off the gear asap.

David Maib
> On Dec 9, 2016, at 7:26 PM, Alan Mekler MD <amekler(at)metrocast.net> wrote:
>
>
>
> I have been using no flaps for my 5000 ft home runway and partial flaps for short runways. What do other people use?
> Alan
> N668G
> 400 hrs
>




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Kelly McMullen



Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
PostPosted: Fri Dec 09, 2016 7:33 pm    Post subject: What flap setting do you use for takeoff Reply with quote
I use 15 degrees for most takeoffs, unless I have a passenger that isn't ready for the acceleration and climb rate. Definitely shorter ground run than with 0 degrees. I haven't focused on actual numbers, suppose I could. More lift, lower lift-off speed are good for less wear and tear on landing gear. More altitude, quicker minimizes time in danger zone of low speed and altitude.

-sent from the I-droid implanted in my forearm

On Fri, Dec 9, 2016 at 7:34 PM, Bill Watson <Mauledriver(at)nc.rr.com (Mauledriver(at)nc.rr.com)> wrote:
Quote:
--> RV10-List message posted by: Bill Watson <Mauledriver(at)nc.rr.com (Mauledriver(at)nc.rr.com)>

Okay, that's what I do; fully retracted (no reflex) for normal takeoffs, partial flaps on rough/sod runways like my home strip.  So roughly half my takeoffs are with partial.

But I can't make sense out of retracted flaps resulting in a shorter takeoff.  Seems possible yet unlikely but I have nothing to back that up.  Comments? Technique?

Bill "knowing I should just go out and get some numbers" Watson

On 12/9/2016 8:34 PM, David Maib wrote:
Quote:
--> RV10-List message posted by: David Maib <dmaib(at)me.com (dmaib(at)me.com)>

Same as you. Alex DeDominices demonstrated to me that flaps fully retracted resulted in a shorter takeoff,during transition training. I tried a few different combinations and techniques during phase 1 and came to the same conclusion. I do use partial flaps on rough/sod runways just to get the load off the gear asap.

David Maib


Quote:
On Dec 9, 2016, at 7:26 PM, Alan Mekler MD <amekler(at)metrocast.net (amekler(at)metrocast.net)> wrote:

--> RV10-List message posted by: Alan Mekler MD <amekler(at)metrocast.net (amekler(at)metrocast.net)>

I have been using no flaps for my 5000 ft home runway and partial flaps for short runways. What do other people use?
Alan
N668G
400 hrs









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PostPosted: Sun Dec 11, 2016 5:41 am    Post subject: What flap setting do you use for takeoff Reply with quote
I'm going to guess that the added drag of the flaps being down lengthens the takeoff roll.  The takeoff roll is pretty short with the flaps up.  Just a SWAG on my part ..... I'm still painting.


Sent from Samsung tablet cruising on the Navigator Of The Seas.
-------- Original message --------
From Bill Watson <Mauledriver(at)nc.rr.com>
Date: 12/09/2016 9:34 PM (GMT-05:00)
To rv10-list(at)matronics.com
Subject Re: RV10-List: What flap setting do you use for takeoff


--> RV10-List message posted by: Bill Watson <Mauledriver(at)nc.rr.com>

Okay, that's what I do; fully retracted (no reflex) for normal takeoffs,
partial flaps on rough/sod runways like my home strip.  So roughly half
my takeoffs are with partial.

But I can't make sense out of retracted flaps resulting in a shorter
takeoff.  Seems possible yet unlikely but I have nothing to back that
up.  Comments? Technique?

Bill "knowing I should just go out and get some numbers" Watson

On 12/9/2016 8:34 PM, David Maib wrote:
Quote:
--> RV10-List message posted by: David Maib <dmaib(at)me.com>

Same as you. Alex DeDominices demonstrated to me that flaps fully retracted resulted in a shorter takeoff,during transition training. I tried a few different combinations and techniques during phase 1 and came to the same conclusion. I do use partial flaps on rough/sod runways just to get the load off the gear asap.

David Maib
> On Dec 9, 2016, at 7:26 PM, Alan Mekler MD <amekler(at)metrocast.net> wrote:
>
> --> RV10-List message posted by: Alan Mekler MD <amekler(at)metrocast.net>
>
> I have been using no flaps for my 5000 ft home runway and partial flaps for short runways. What do other people use?
> Alan
> N668G
> 400 hrs
>




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Lenny Iszak



Joined: 23 Mar 2008
Posts: 270
PostPosted: Sun Dec 11, 2016 10:43 am    Post subject: Re: What flap setting do you use for takeoff Reply with quote
Lynn,

It's the other way around. Much shorter ground run with 10 degrees of flaps on takeoff, and way too long with flaps in the reflex (-3) position.

Lenny

flying-nut(at)cfl.rr.com wrote:
I'm going to guess that the added drag of the flaps being down lengthens the takeoff roll. �The takeoff roll is pretty short with the flaps up. �Just a SWAG on my part ..... I'm still painting.


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Mike Whisky



Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
PostPosted: Tue Dec 13, 2016 10:33 am    Post subject: Re: What flap setting do you use for takeoff Reply with quote
Attached my Vx / Vy measurements during Phase I it was done with flaps 0 degrees. Would be interesting to see what it would be with 10 or 15 degrees.
Regards
Mike

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PostPosted: Tue Dec 13, 2016 11:50 am    Post subject: What flap setting do you use for takeoff Reply with quote
Mike, just redo your testflights and send the data to Andre Smile and then
you will know.

Cheers Werner

On 13.12.2016 19:33, Mike Whisky wrote:
Quote:


Attached my Vx / Vy measurements during Phase I it was done with flaps 0 degrees. Would be interesting to see what it would be with 10 or 15 degrees.
Regards
Mike

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Mike Whisky



Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
PostPosted: Tue Dec 13, 2016 12:07 pm    Post subject: Re: What flap setting do you use for takeoff Reply with quote
Great idea if I ever find the time but an even better suggestion you do it during your Phase 1, just get the -10 done quickly 😉

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PostPosted: Tue Dec 13, 2016 12:34 pm    Post subject: What flap setting do you use for takeoff Reply with quote
I would do that for you but might need help for finishing the remaining
90% Smile

But wait, there is Gordon he should be close Wink

Cheers

Werner

On 13.12.2016 21:07, Mike Whisky wrote:
Quote:


Great idea if I ever find the time but an even better suggestion you do it during your Phase 1, just get the -10 done quickly 😉

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