Flap drive tube SNX-C04
Posted: Sun Dec 30, 2018 9:55 am
by Rofomoto
What is the weldment in the center of -09 on flap tube for? Thanx billy
Re: Flap drive tube SNX-C04
Posted: Sun Dec 30, 2018 10:05 am
by Bryan Cotton
That is for center controls. I am using the center weldment but not the left side one.
Re: Flap drive tube SNX-C04
Posted: Sun Dec 30, 2018 10:16 am
by Rofomoto
Bryan Cotton wrote:That is for center controls. I am using the center weldment but not the left side one.
Thanx Bryan
So with center controls you have to take your hand off stick to In gage flaps? Or do you still have duel sticks?
Re: Flap drive tube SNX-C04
Posted: Sun Dec 30, 2018 10:25 am
by Bryan Cotton
Billy,
Still have dual sticks. Throttle, mixture, fuel shutoff, flaps, and handbrake are all in the middle. Fly left hand in the left seat, right hand in the right seat. Except for the Sonex hand brake and sticks instead of a yoke, it is like a Cessna.
Edit: you can see more of the controls here. The flap handle is folded down so I could get the tank in and out.
Re: Flap drive tube SNX-C04
Posted: Sun Dec 30, 2018 11:13 am
by Rofomoto
Thanx big help!!
Re: Flap drive tube SNX-C04
Posted: Mon Dec 31, 2018 11:44 am
by DCASonex
If wanting to keep hands on throttle and on stick while landing, consider adding an electric flap operator. 12 volt 6" linear actuators of at least 100 pound thrust capacity can be found for under $100, and if switch is next to throttle, hand does not have to move. If throttle and switch are in left lower corner of panel, can also operate the trim tab while keeping hand on throttle. Have drawings available.
David A.
Re: Flap drive tube SNX-C04
Posted: Mon Dec 31, 2018 3:21 pm
by Rofomoto
DCASonex wrote:If wanting to keep hands on throttle and on stick while landing, consider adding an electric flap operator. 12 volt 6" linear actuators of at least 100 pound thrust capacity can be found for under $100, and if switch is next to throttle, hand does not have to move. If throttle and switch are in left lower corner of panel, can also operate the trim tab while keeping hand on throttle. Have drawings available.
David A.
Thanx David
Good option. Do you use a momentary switch for that And how does it reverse?
Re: Flap drive tube SNX-C04
Posted: Mon Dec 31, 2018 3:51 pm
by GordonTurner
You can use either a (ON)-OFF-(ON) or a (ON)-OFF-ON switch depending how you want it to function.
The first one, you hold until the flaps are where you want, let go, and the switch returns to OFF.
The second one you hold it for the flaps going DOWN, but when you flip it UP the flaps will come ALL THE WAY UP.
Need DPDT switch in either case. The leads to the flap motor are the center poles, power and ground go to, for example, the left and right poles for up, and the right and left (opposite) poles for down.
The actuator you want to find has built in OFF when it reaches end of travel. Also, if you have an EFIS you should get an actuator with a built in position sensor so you can show flap position in the screen.
Gordon
Re: Flap drive tube SNX-C04
Posted: Mon Dec 31, 2018 5:11 pm
by Rick524
I think this is one actuator that has been used on a Sonex, (not mine though) I still have the handle.
Rick
Sonex 524
Re: Flap drive tube SNX-C04
Posted: Mon Dec 31, 2018 5:27 pm
by Rofomoto
Thanx guys
Re: Flap drive tube SNX-C04
Posted: Tue Jan 01, 2019 10:48 am
by DCASonex
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.
Re: Flap drive tube SNX-C04
Posted: Tue Jan 01, 2019 1:18 pm
by John Monnett
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.
Re: Flap drive tube SNX-C04
Posted: Tue Jan 01, 2019 6:03 pm
by Concorde
Hi John,
Does Sonex sell these Actuators and if not can you give us the name and part number.
Thanks
Ben
Re: Flap drive tube SNX-C04
Posted: Tue Jan 01, 2019 8:53 pm
by GordonTurner
These guys seem to have the correct type if sonex doesn’t come up with a reference.
Re: Flap drive tube SNX-C04
Posted: Wed Jan 02, 2019 7:12 am
by Concorde
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
Re: Flap drive tube SNX-C04
Posted: Wed Jan 02, 2019 8:12 am
by Bryan Cotton
https://en.m.wikipedia.org/wiki/Ball_screw
Re: Flap drive tube SNX-C04
Posted: Wed Jan 02, 2019 2:11 pm
by John Monnett
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.
Re: Flap drive tube SNX-C04
Posted: Wed Jan 02, 2019 2:16 pm
by WaiexN143NM
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
Re: Flap drive tube SNX-C04
Posted: Thu Jan 03, 2019 7:58 pm
by Concorde
Bryan Cotton wrote:Ball screw - Wikipedia
Thanks.
Re: Flap drive tube SNX-C04
Posted: Thu Feb 28, 2019 5:11 pm
by b webb
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