Flap drive tube SNX-C04

Discussion for Sonex builders on specific plans page experience. These posts are limited to technical suggestions such as assembly order, challenges, or techniques related to specific plans pages.

Re: Flap drive tube SNX-C04

Postby DCASonex » Tue Jan 01, 2019 10:48 am

The problem with the linear actuators with the position sensor to connect to an EFIS is that they are longer which complicates mounting. The unit without the position sensor is very easy to mount utilizing the existing flap handle. Full extension takes about 8 seconds. I have a GRT EFIS that could display position, but find it simple when landing to count 3 seconds while holding switch down, which gives about 15 degrees of flap, then flip the trim lever to full nose up and leave it there until on the ground. Not necessary to take up critical display screen space for the position function, and one less distraction to scan. (I use an old steam gauge airspeed indicator when landing, the digital display of my EFIS updates too slowly to keep up with the rapid changes of airspeed of a Sonex.)

Electric flaps very handy when landing over trees on short runways. Keep 15 degrees flap until just before the end of the trees, then go to full flap while pulling nose up to kill some speed. At about 65 mph and full flaps, Sonex have the glide angle of a brick. Just keep in mind that you will loose much of any head wind when getting below the trees, Do not want to get airspeed too slow.

Happy NEW YEAR to all.

David A.
DCASonex
 
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Re: Flap drive tube SNX-C04

Postby John Monnett » Tue Jan 01, 2019 1:18 pm

Rick524 wrote:I think this is one actuator that has been used on a Sonex, (not mine though) I still have the handle.

http://www.pololu.com/product/2307

Rick
Sonex 524

Rick,
This is not the actuator Sonex specifies. We only use "ball drive" actuators for flaps.
John Monnett
 
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Re: Flap drive tube SNX-C04

Postby Concorde » Tue Jan 01, 2019 6:03 pm

Hi John,
Does Sonex sell these Actuators and if not can you give us the name and part number.
Thanks
Ben
Ben
Sonex # 1684
Tri-Gear, Dual Control
Rotax 912uls
N379BS reserved.
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Re: Flap drive tube SNX-C04

Postby GordonTurner » Tue Jan 01, 2019 8:53 pm

http://www.actuator.com/

These guys seem to have the correct type if sonex doesn’t come up with a reference.
Waiex 158 New York. N88YX registered.
3.0 Liter Corvair built, run, and installed.
Garmin panel, Shorai LiFePo batteries.
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Re: Flap drive tube SNX-C04

Postby Concorde » Wed Jan 02, 2019 7:12 am

GordonTurner wrote:http://www.actuator.com/

These guys seem to have the correct type if sonex doesn’t come up with a reference.

I was looking at this one . What is a ball drive ?
https://www.firgelliauto.com/products/f ... gKBuvD_BwE
Ben
Sonex # 1684
Tri-Gear, Dual Control
Rotax 912uls
N379BS reserved.
Concorde
 
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Location: North Carolina

Re: Flap drive tube SNX-C04

Postby Bryan Cotton » Wed Jan 02, 2019 8:12 am

Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
User avatar
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Re: Flap drive tube SNX-C04

Postby John Monnett » Wed Jan 02, 2019 2:11 pm

GordonTurner wrote:http://www.actuator.com/

These guys seem to have the correct type if sonex doesn’t come up with a reference.

These are the type we use. CAUTION: do not mention you are using them on an aircraft... they will not sell them to you!!!!!
And, yes, we have actuators for flaps on the Sonex and the jet for sale.
John Monnett
 
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Re: Flap drive tube SNX-C04

Postby WaiexN143NM » Wed Jan 02, 2019 2:16 pm

HI all,
We used the firigelli auto electric drive for our flaps, on our legacy waiex, love it.
John gillis installed one. we copied his install. hopefully he sees this post and can repost the correct model # .

WaiexN143NM


P.S. want to give a reccomend to mike at www.mykitairplane.com
he makes cover plates for aircraft. some for specific models.
friendly, prompt, good quality
WaiexN143NM
 
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Re: Flap drive tube SNX-C04

Postby Concorde » Thu Jan 03, 2019 7:58 pm

Bryan Cotton wrote:https://en.m.wikipedia.org/wiki/Ball_screw

Thanks.
Ben
Sonex # 1684
Tri-Gear, Dual Control
Rotax 912uls
N379BS reserved.
Concorde
 
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Location: North Carolina

Re: Flap drive tube SNX-C04

Postby b webb » Thu Feb 28, 2019 5:11 pm

I'd like to add electric flaps to my 2008 Waiex can anyone give a list of required parts and how its installed?
Thank you. email is griffinve@gmail.com
b webb
 
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