VAF Forums

VAF Forums (https://vansairforce.net/community/index.php)
-   RV General Discussion/News (https://vansairforce.net/community/forumdisplay.php?f=2)
-   -   ASA New Product Video is up! (July 2014) (https://vansairforce.net/community/showthread.php?t=115072)

morganjp 10-13-2014 04:08 PM

I did not build but oil cooler is on the right side of the Cowl and vented to the outside which I suspect makes the temps higher. A& P who put the motor together says oil temps below 215 are good as it boils out any water in the oil.
Anyone have an opinion on either issue?

John Morgan

Nitty 12-30-2014 08:15 AM

Counter sink the cowl
 
I'm installing a couple cowl flaps and was thinking about using some Tinnerman washers and screws to fasten them to the cowl. Can I countersink a honey combed cowl enough to seat the washer or will that compromise the cowl/structure in some way?

Allen's video suggests that simply epoxying the flange to the cowl is sufficient since the internal pressure exceeds the ambient pressure. Is that also true when the cowl is open? Seems that there would be some moment at the aft portion of the flange that would want to separate the flange from the cowl.

Dale

Taildrgr 12-30-2014 09:13 AM

I first used a button head screw and washer, but even though I packed the edge of the honeycomb with resin/micro, the part by the screw crushed a bit.

I wanted a nicer smooth look so I went with the countersunk screws.

I took out the button screws and made a very careful slight countersink with a dremel grinding tip (gotta watch the honecomb will cut fast) and used a tinnerman and flat head screw and it came out fine. Put a little resin/micro in the countersink area for strength to prevent more crushing.

mr.sun 07-03-2019 09:40 AM

ASA Cowl Flaps
 
I installed two flaps in my RV7 (IO-360-Horiz Induction). Cooling is now a non issue in all conditions I've flown since install. I did have a motor go out, (replaced, no question).

I did find that there was a bit of clearance interference with the electric fuel pump when the starboard flap closed. I didn't take that into consideration when I chose the mounting spot. I trimmed/filed down one side of the flap edge and gave myself a bit more clearance. All is good now.

I also put aluminum tape over the wire and the actuator thinking it may protect things from heat. Will it help? Time will tell.

Overall, I'm glad I did it.

Sylvainsting 07-17-2019 09:28 AM

Cowl flaps ASA and VPX sport
 
Hello,

I plan to install two cowl flaps ASA in my RV7 finished from 3 years, and I would like to connect them with my VPX sport but I only have one port available. So is it possible or not ?

in advance thank you for your reply
Sylvain

Mark33 07-17-2019 10:11 AM

It should be fine
 
I would contact Allan with that question, but you should be fine. I?m not using a VPX but both of my cowl flaps will operated via the same circuit and controlled with one toggle switch.

Brantel 07-17-2019 11:12 AM

Quote:

Originally Posted by Sylvainsting (Post 1360216)
Hello,

I plan to install two cowl flaps ASA in my RV7 finished from 3 years, and I would like to connect them with my VPX sport but I only have one port available. So is it possible or not ?

in advance thank you for your reply
Sylvain

Both of mine are connected to one port of my VPX-Pro, works fine.

PerfTech 07-17-2019 01:06 PM

Quote:

Originally Posted by Sylvainsting (Post 1360216)
Hello,

I plan to install two cowl flaps ASA in my RV7 finished from 3 years, and I would like to connect them with my VPX sport but I only have one port available. So is it possible or not ?

in advance thank you for your reply
Sylvain

?.Here is a diagram for wiring them up. You need a DPDT switch, and yes
you can wire them together. They only pull 200 m-amp each. Thanks, Allan :D




Sylvainsting 07-17-2019 01:47 PM

VPX
 
Hello Brantel,

Did you connect your cowl flaps on a specific port or a normal port ?
Chad from Vertical Power just said me it is impossible to connect cowl flap on a VPX because there is only one specific port for the Flaps but nothing for another device.
Or perhaps the VPX Pro is different than the VPX sport ?

Thank you
Sylvain

Mark33 07-17-2019 02:42 PM

Regular flaps....not cowl flaps.
 
I?m sure Chad is referring to the regular flaps...not ?cowl flaps?. If he said that there?s only one port for them, I?m sure he just misunderstood you. I had the VPX on my other airplane and I remember there being one specific pin to connect them to to operate the flaps.

Sylvainsting 07-18-2019 12:11 AM

VPX diagram
 
Hi Brantel,

Here is a little diagram of VPX connections. The switches are only simple contact et they don't carry power.
So I don't see how ou can extend AND retract the cowl flap with only 1 port.

Please, can you explain how you connect it ?

In advance thank you
Sylvain

Brantel 07-18-2019 04:31 AM

Quote:

Originally Posted by Sylvainsting (Post 1360398)
Hi Brantel,

Here is a little diagram of VPX connections. The switches are only simple contact et they don't carry power.
So I don't see how ou can extend AND retract the cowl flap with only 1 port.

Please, can you explain how you connect it ?

In advance thank you
Sylvain


I misunderstood your post. I only fed the DPDT switch (similar to a flap or trim switch) with power from one of the VPX circuits. I do not ?control? the cowl flaps with it. Again, sorry for the confusion!

cjensen 07-18-2019 07:31 AM

Yes the way Brian has the switch wired works...and yes I was referring to the flap circuits being the only way to "control" a motor.

Cheers,
Chad

Sylvainsting 07-18-2019 10:11 AM

port protected ?
 
Hi,

So, if I understood correctly, the diagram in that case should be like that ?

A question : is the VPX port protected with the internal fuse ? and how to set it in the configuration ; always open ?

in advance thank you
Sylvain

cjensen 07-19-2019 07:23 AM

Yes, that is the way to wire an appropriately rated switch to control output power.

Yes, the VP-X will protect the wiring. Set the breaker value to the appropriate level for the current expected. Set the pin to always on.

Sylvainsting 07-19-2019 08:37 AM

Thank You
 
Thank you very much Chad, its help a lot !

Cheers
Sylvain

jjb 07-19-2019 10:09 AM

Question On ASA Cowl Flap Actuator and VPX
 
The VPX installation manual on Page 16, Paragraph 4.12 states to not use the VPX to power linear actuator motors that have a possibility of binding at the end of their travel.

I also am planning to use an ASA cowl flap and VPX, and have been wondering about whether this is an issue, especially with a very low current device like the ASA actuator. Is the ASA cowl flap actuator the type the installation manual is referring to?

I seem to recall a thread a while back where a binding cowl flap actuator caused a problem in a VPX system.

What is the thought on this?

Sylvainsting 09-16-2019 07:40 AM

cowl flaps position for cutting
 
Hello,

I am going to install my cowl flaps and I don't know exactly where to cut my cowl. There is no indication on the A.S.A sheet. I read somewhere 3 inches from the rear of the cowl.
Is somebody to help me ?

In advance thank you
Sylvain

PerfTech 09-16-2019 09:52 AM

Quote:

Originally Posted by Sylvainsting (Post 1373939)
Hello,

I am going to install my cowl flaps and I don't know exactly where to cut my cowl. There is no indication on the A.S.A sheet. I read somewhere 3 inches from the rear of the cowl.
Is somebody to help me ?

In advance thank you
Sylvain

Here are a few photos that will help clarify the location for your Easy Cool
flaps. If you can give me a call I am certain I can save you a lot of time
and work on your installation. Thanks, Allan... :D
.









Sylvainsting 09-16-2019 01:09 PM

Thank you Alan
 
Hello Alan,

Thank you for your message. My english is not very good, so a call should be difficult for me. Is it possible you give me the distance between the rear of the cowl and the cut line. Is it 2 or 3 inches ?

in advance thank you
Sylvain


All times are GMT -6. The time now is 06:38 AM.