Yellow Aircraft Stingray
10-19-2019, 02:03 AM
#26
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Robarts 550 reverse retracts
My only difficulty is sourcing a set of robarts 550.
The Robart site never refers to reverse retracts. Can they just have the trunion reversed? I was looking at the 550rs...
I really don't wish to use my stock retracts....
The Robart site never refers to reverse retracts. Can they just have the trunion reversed? I was looking at the 550rs...
I really don't wish to use my stock retracts....
10-19-2019, 11:56 AM
#28
On most retracts the trunion fork can be reversed, mine had struts made from piano wire bend as needed and Spring air retracts.
All tailess airplanes need reflex up to fly level at 2/3 throttle, the farther aft the CG is located the less reflex up is needed, TO and Landings involves lots of Elevons to get off the ground and to return to the ground, CG location helps a lot on TO and Landings rotation, expo is your best friend, specially on the maiden flight.
All tailess airplanes need reflex up to fly level at 2/3 throttle, the farther aft the CG is located the less reflex up is needed, TO and Landings involves lots of Elevons to get off the ground and to return to the ground, CG location helps a lot on TO and Landings rotation, expo is your best friend, specially on the maiden flight.
Last edited by CARS II; 10-19-2019 at 12:41 PM.
10-19-2019, 12:18 PM
#29
The lower you get the engine the better, I think I see rubber grommets on the engine mounts, you don't need those, I recommend to use short screws and washers with nylon nuts ( the nylon nuts on top) this will give you room to rotate the engine to the Right as much as possible then try to lower the engine as much as possible, you may have to cut/modified the engine mounts a bit.
Last edited by CARS II; 10-19-2019 at 12:32 PM.
10-19-2019, 12:31 PM
#30
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The lower you get the engine the better, I think I see rubber grommets on the engine mounts, you don't need those, I recommend to use short screws with nylon nuts ( the nylon nuts on top) this will give you room to rotate the engine to the Right as much as possible then try to lower the engine as much as possible, you may have to cut/modified the engine mounts a bit.
It a gas start mw44....
I never saw an actual yellow aircraft mount for the 44, so it's a bit of guess work.
Second picture option is the lowest I could go. I believe if I could get it to nearly touch the fuse would be the best to keep it close to the thrust line... Am bummed at the moment!
10-19-2019, 12:37 PM
#31
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The lower you get the engine the better, I think I see rubber grommets on the engine mounts, you don't need those, I recommend to use short screws and washers with nylon nuts ( the nylon nuts on top) this will give you room to rotate the engine to the Right as much as possible then try to lower the engine as much as possible, you may have to cut/modified the engine mounts a bit.
I might try rotate the tail cone to make the probe read from top....
But the glow plug ring is like the anti rotation pin for the engine in the mount...
10-19-2019, 12:58 PM
#39
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The probe would still be a problem! Since the mount keeps the darn sensor always at 7oclock!. If I skip the glow, still the egt won't turn in relation to the mount...the mount is part of the egt bracket
10-19-2019, 01:02 PM
#42
Yes, do that, rotate the tail cone, it can be rotated any way you want.
Do not over tighten the screws when you put them back on, set them, then 1/4 turn more, after you run the engine you can reset them again.
Do not over tighten the screws when you put them back on, set them, then 1/4 turn more, after you run the engine you can reset them again.
Last edited by CARS II; 10-19-2019 at 01:05 PM.
10-19-2019, 01:02 PM
#43
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Thing is I have no drawings of the thrust line vrs longitudinal axis. So have no idea of the aircraft had any upthrust.... I know it need reflex like the hotspots, but upthrust?
10-19-2019, 01:03 PM
#44
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Unless I flip it (the bracket) over and under!!and I get the sensor next to the probe.....
It's 2300 here... And and seriously considering to go get it done!
Last edited by Signofinfinity; 10-19-2019 at 01:07 PM.
10-19-2019, 01:12 PM
#47
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Will see how low I can go then...
Brackets are not an issue, I can re bend, re cut or fabricate. As long as I get what it takes. My concern is upthrust. I have no idea if any is needed. I might just add 2degrees... And see how it behaves.
10-19-2019, 01:15 PM
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10-19-2019, 01:26 PM
#50
Giving up thrust will help any time, you get to find the effects during flight, when it is going faster it wants to climb a bit then you push the Elevons down a bit then back to normal cruise speed ( 2/3 throttle ) all is back to normal trim.
These tailess airplanes are a diferent animals and your Stingray will fly a bit different than mine or my friend's, but it will fly and it will scare the pants off you
and you are going to want more of that for sure because, it will be so much fun to fly her.
These tailess airplanes are a diferent animals and your Stingray will fly a bit different than mine or my friend's, but it will fly and it will scare the pants off you
and you are going to want more of that for sure because, it will be so much fun to fly her.
Last edited by CARS II; 10-19-2019 at 01:32 PM.