I use FoamTac in those grub screw holes.
Announcement
Collapse
No announcement yet.
Freewing 90mm F-22 Raptor - Official Thread
Collapse
X
-
Two ways. Tie a string to the ribbon cable when you pull it through. If you already pulled it through, set the plane on its nose, tail up. Tie a small nut to some string and put it in the wing opening. It'll fall down to a spot on the inside of the battery compartment side where you can get it.
Comment
-
Originally posted by lrsd18Abn View Postif I could know the exhaust size of the foamie as I would like to modify with an outlet similar to this: (pic) there are several sizes 80mm, 90mm, 70mm and a 64/72mm?
As far as I can recall, the old 90mm Eurofighter is the closest approximation to what you are trying to do. Those nozzles were the same size as what came on twin 70mm EDF jets like the SU-35 and SebArt MiG29. I don't recall seeing vector nozzles of other sizes, but I never looked that hard.
PS. I'm not so sure that twin nozzles grafted onto the end of this plane will have sufficient movement in all the desired directions. If you are planning to install a single vector nozzles, that will also be an interesting proposition. Of course, a single outlet does not have to be the same square area as twin outlets. A single large outlet will function as good as small twin outlets totalling the same square area.
Comment
-
The F-22 exhausts are 30x70mm, 4200sq/mm for the two. Remember that going from a single fan to two (even worse for square outlets) outlets, bifurcated, reduces your efflux. Then you have the two TV's which additionally reduce your efflux. XViper talked about the Eurofighter (and F-18) TV's. The outlet diameter on those are 61.5mm 2969x2 or 5938sq/mm.
I really like the TVs I did. If there was a decent way to add yaw I would but it would make an already inefficient system even less efficient.
I hope you do try something and post your results. I'm not sure but I think when they label something a size, say 90mm, they mean it's for a 90mm size fan and not that it's the inside diameter of the TV unit. The 80mm ones on my Gripen and Mig are 68.5.
Comment
-
Originally posted by Evan D View PostI really like the TVs I did. If there was a decent way to add yaw I would but it would make an already inefficient system even less efficient.
Comment
-
Originally posted by PatrickVn View PostHas anybody painted their F-22 in a different paint scheme ? Would love to see some pictures of this if available ?
Comment
-
I’m sure this has been discussed, but I haven’t been able to find it. I have the 8s version of the F 22. And it’s fast, but also heavy given that I am using 6000 packs and even a pair of 7000s. I want to upgrade it so it runs on 10s or even 12s. My consideration right now is if I replace the speed control, can I get away with the stock fan and motor? From what I’m reading, I think I can. Motion says the components are only rated for eight. Obviously. It has the 150 amp speed control, but it will not run on 10s. Must be some sort of overvoltage protection. It turns on and you have control of the surfaces, but it will not throttle up. Thoughts?
Comment
-
Originally posted by SDW2001 View Post
these are final decals that I inkjet printed. The problem with the injured of course is that has faded slightly. I’m going to be redoing it at some point using laser printer. Just used white decal paper. I also have a huge American flag on the bottom of it.
- Likes 1
Comment
-
There is a BEC that is powering your plane and separately the ESC that will power the motor. I've never done it because it's stupid to think things will not smoke when you apply more voltage than they are rated at but it sounds like the BEC survived the voltage.
Buy the proper components if you want to go more than 8S. It'll cost you about the same as the plane cost you to start.
Originally posted by SDW2001 View PostI’m sure this has been discussed, but I haven’t been able to find it. I have the 8s version of the F 22. And it’s fast, but also heavy given that I am using 6000 packs and even a pair of 7000s. I want to upgrade it so it runs on 10s or even 12s. My consideration right now is if I replace the speed control, can I get away with the stock fan and motor? From what I’m reading, I think I can. Motion says the components are only rated for eight. Obviously. It has the 150 amp speed control, but it will not run on 10s. Must be some sort of overvoltage protection. It turns on and you have control of the surfaces, but it will not throttle up. Thoughts?
Comment
-
Originally posted by Evan D View PostThere is a BEC that is powering your plane and separately the ESC that will power the motor. I've never done it because it's stupid to think things will not smoke when you apply more voltage than they are rated at but it sounds like the BEC survived the voltage.
Buy the proper components if you want to go more than 8S. It'll cost you about the same as the plane cost you to start.
Comment
-
No, it won't handle it. You don't understand electronics. Plug a 110V house hold item into a 220 outlet "for an extremely small amount of time" and see what happens. If you are lucky the item has a replaceable fuse.... An ESC doesn't. If it still works you got lucky, that's all.
And no, it won't work just limiting the amount of throttle you apply either.
- Likes 1
Comment
-
Originally posted by Evan D View PostNo, it won't handle it. You don't understand electronics. Plug a 110V house hold item into a 220 outlet "for an extremely small amount of time" and see what happens. If you are lucky the item has a replaceable fuse.... An ESC doesn't. If it still works you got lucky, that's all.
And no, it won't work just limiting the amount of throttle you apply either.
edit: By the way, you suggesting that going from 8S to 10s is like 110v/220v makes me question YOUR understanding of electronics.
- Likes 3
Comment
Comment