Great pictures and very helpful, thanks! Wish I could find other similar equipment installation pics to get even more ideas.

I kind of figured I didn't want to create a situation where the cockpit needs to come out between every flight, thank you for confirming that.

I did consider adding the valves under the speed brake to keep them mid-ship, may take another look at that this evening. I would like to add the scale(ish) speed board cover plate that CARF provides, but if I use a bit of velcro to keep it in place maybe it could be easily removed to open/close the fuel valves.

I found this one on my phone, hope it helps... there you can see the 2 fuel valves and also the smoke valve in front of them... if not I can take a new picture during the weekend, let me know...

Yep, I see, thanks again!

most guys are going through the air brake door....

Anyone have suggested throws for the leading edge flaps/slats? The manual gives starting throws for all other surfaces except those. Thinking maybe 1/4" with takeoff flap, 1/2" with landing flap (measuring the opening at the wing seam, not the deflection of the leading edge) but that is just a wild guess.

When I spoke to Andres, he stated that the aircraft is very stable, so full deflection on both slats/flaps on landing and half on take off....

As luck would have it, I mocked up the wing against the fuse and deflected the slat until it stopped against the slot in the fuselage and the deflection was about exactly 1/2" at the root of the slat. So my 1/2" and 1/4" guesses might be pretty close after all. Thanks Mave.

Hi All

please be careful with statements like : Full Deflection or "as much as you can get". I lost a Skygate Hawk because what I could get in full Deflection of the flap was 3 times more than what another Hawk owner could get from his. The actual measurement as you are doing is the best way.

Behzad

I use full slats and 1/4 flaps for take off and full slats and 3/4 flaps as well as air brake for landing.

What size pilots fit this?
Scott

I got a 1/6 pilot from taylored pilots... fits perfect...

I use 10 inch pilots in mine.

Derek, I see you have the fender on the nose wheel. Was it 3D printed by chance? Care to share the STL file??

Yes it was printed but not by me.... took a bit of manual labour to make it work though. I will see if I can get the file.

Are you guys gluing in the ventral fins or do they just stay with friction alone? I think permanently installing them would actually block the small hatch to the stab servo linkage, but wasn't sure if they would stay put if they were only pressed in so they could be easily removed for transport.

there isn't place for a set screw? I haven't got that far yet.

Nothing in the fuselage side and no mention of them in the manual - each fin just has two rods (fiberglass perhaps) that slide into carbon tubes in the bottom of the fuselage. They do feel pretty snug, but wouldn't want one to fall out across the field either. And they definitely interfere with storage/transport if you want to try to transport on a shelf with gear up.

I gotta ask, what sort of adjustments did you need to make to get it down to that low? I felt like my biggest issue would be the two servos fighting each other, but I'm getting a lot of drag from what I feel like is just the friction of the slat against the wing surface and not sure what can be done to lessen that. I wonder also if the servo linkages aren't exactly square and I'm getting some side load, but not sure how to smooth that out either since there is no room for ball links.

Most of it was in the servo set up. But the slat did move smoothly with no grabbing. That's down to the sanding/cleaning to remove any rough spots. Then the four servos were matched in pairs and JR aluminium double arms used. This gets you nearest to a matched pair with no subtrim. I cut off the unused side. Then I clamped the two arms together and drilled the clevis holes in a pillar drill. I have a set of 0.1mm step drills and keep at least 10 of each between 1mm and 3mm as they are only good for a few jobs, before they are shot at that size.
The clevis pins were lightly greased to stop chattering which wears the holes and pins.
Then I set the movement with the inner servo only connected, then disconnected the inners and did the same on the outers and used the PB servo match to get it matched closed. Then I connected up the two servos with the H9 meter on the outer and used the Powerbox match to set the open position. The first wing too 4 hours, the second less that 2.
But the servos need to be mechanically matched as close as possible before you start!

Dave

Thanks Dave! I did get the servos mechanically matched up, and basically to a point where the amp load on each servo at rest does not increase when the other servo is connected or disconnected (seems to reason that helps me ensure they aren't fighting each other anyway). Little grease on the pins seems like a fine idea though, and will check for any rough spots on the slats or wing themselves. I didn't mean to indicate they are grabbing, but more so the friction of the upper slat skin as it slides against/underneath the wing skin. But I'll feel for anything there that might cause extra load.

The manual states that the 2 wing tubes are to be glued in the fuselage. The vertical fins have set screws to secure them on the rods.

Thomas

Sorry, I was talking about the ventral fins that are underneath the fuse, not the vertical fins and rudders.

I did't glued them to the fuse, if you are transporting the plane you better take them out each time, as it will sit on them... if you want to make sure they wont fall use some velcro but it's not needed...
Also i had a partial Gear up landing,were the nose lg was the only one down, they saved me to scratch the fuselage, they are preatty strong and holded up really well with just some minor scratches, been flying with them afterwards and no issues whatsoever....

Attachment 2234596

gentleman just for info, it's been a while since i posted but i have to stress to keep checking the your slats before and after flights, another carf su-27 lost their slat in mid flight....hopefully the picture uploads...

in the picture, the left slat is missing completely..

It isn't gone, but apparently it folded under the wing completely.. Not sure how much the slats really add to an airplane this lightly loaded.