Official Freewing 80mm F-22 Raptor EDF Jet Thread

[Evan D]

I have no problem getting 20mm behind the 115mm mark with either my 5200 (545g) or 5000 (650g) packs. There is room for 8S and if you have lighter ones it should balance with them. You can delete or move the MCBe but it won't get you much.

I bypassed the MCBe on mine for tailerons and full span ailerons, and separate nose steering.

There is no clearance issue if we had dual stage doors on the mains and todays project is to figure out if I need to bypass the MCBe and make a sequencer program in my transmitter to do it or if an older MCBe can do it.

I haven't buttoned it all up yet and also want to see if I can dremel foam under the battery tray to put the receiver there, on the 90 I didn't have to and there was plenty of foam depth under the 70's to do it but at first glance the foam under the 80's doesn't look thick enough.

[shortround91]

Very interesting, when you finish up would love to see pics. Owning the 64-70 and 90 I’m just not sure if I for now need the 80, it’s very nice I just can’t see it doing anymore than the others minus the 64

[Evan D]

This morning I pulled the pin connector on the ribbon cables for the outer gear doors, Y'ed them and plugged them into a slot on my receiver and created a sequencer program in my transmitter. I made the sequencer match the nose gear timing and boy is it slow. Reminds me of the Eurofighter... I needed an extra channel to do so so I lost separate steering on my 10ch receiver.

The biggest mod is moving the MCBE aft and putting the receiver under the battery tray and moving the battery tray aft about an inch and a half over where the small ply MCBe mounting plate was. I removed the gyro mounting plate and it's mounts, removed the MCBe mounting plate and trimmed foam on the sides so the battery mounting plate goes all the way back. I cut foam under where the MCBe mounting plate was to run wires under the now moved aft battery mounting plate.

I pushed a pin through the foam under the tray to make sure I can dremel foam to mount the receiver under the tray and there is plenty of foam to do so. After lunch I'll dremel that and start the receiver and MCBe mounting and wire management. The MCBe will be mounted vertically flat up against the very back of the bay.

Doing all this will give me about another two inches I can move the battery back though I have no issue balancing as it was stock.

I'll have tailerons, flaps mixed to ailerons for full span ailerons and the main gear doors now closing after the gear are extended.

I have no problem getting 20mm behind the 115mm mark with either my 5200 (545g) or 5000 (650g) packs. There is room for 8S and if you have lighter ones it should balance with them. You can delete or move the MCBe but it won't get you much.

I bypassed the MCBe on mine for tailerons and full span ailerons, and separate nose steering.

There is no clearance issue if we had dual stage doors on the mains and todays project is to figure out if I need to bypass the MCBe and make a sequencer program in my transmitter to do it or if an older MCBe can do it.

I haven't buttoned it all up yet and also want to see if I can dremel foam under the battery tray to put the receiver there, on the 90 I didn't have to and there was plenty of foam depth under the 70's to do it but at first glance the foam under the 80's doesn't look thick enough.

[Evan D]

Ready to fly.

Gear sequencing

https://youtu.be/z6Se0E3f7co

Tailerons and full span ailerons

https://youtu.be/d1FZjE_SIGI

.

[shortround91]

Ready to fly.

Gear sequencing

https://youtu.be/z6Se0E3f7co

Tailerons and full span ailerons

https://youtu.be/d1FZjE_SIGI

.

Looks great, appears the 80 cockpit is just like the 70’s over course a little larger. Keeping my fingers crossed we get a 90 Raptor upgrade sooner than later along with some replacement parts coming available. In need of a wing set, flew in 20mph winds plus gusts on landing gust hit tipped her on a wing and wrinkle city. FW and Motion have really been knocking it out of the park lately can’t wait to see what else they have in store for us in 2025

[rifleman_btx]

The 8S 90 still has the best power out of the box though of course modified with a 10S and 12S it had even more, I did have a JetFan 8S in my first two but FreeWings new 8S 90mm fan is as powerful. They all, 70, 80, and 90 have plastic mounted very good gear and all have flaps. Cool to do this https://www.youtube.com/watch?v=0UtX...ature=youtu.be

Which F-16 do you like best? I don't like the F-16 as much as the F-22 but have three of FreeWings new 64, one on 6S, their 70mm and the new V2 90mm 8S (I also had the V1 90mm). I also recently had the Eflite 80mm on 8S but didn't like how it flies. Do you have the 105mm? I was thinking of getting one, I like my 105mm L-39.

I think you might like the f16 105mm, now it does fly heavy, not sure but I would think the freewing 8s 90mm v2 would have a better thrust performance. Just by my experience with the 105mm hsd in stock form.

[Evan D]

Not to sidetrack the thread but I have the 105mm L-39 and with how it performs next to any 70 or 80 is horrible, I can't see having a F-16, which should be faster, ziipier than the L-39 being that fun. At least not without a megga EDF/ battery upgrade to a JF110 and 14S.

[rifleman_btx]

Yes agreed.

[Fast N Light]

The biggest mod is moving the MCBE aft and putting the receiver under the battery tray and moving the battery tray aft about an inch and a half over where the small ply MCBe mounting plate was. I removed the gyro mounting plate and it's mounts, removed the MCBe mounting plate and trimmed foam on the sides so the battery mounting plate goes all the way back. I cut foam under where the MCBe mounting plate was to run wires under the now moved aft battery mounting plate.

I pushed a pin through the foam under the tray to make sure I can dremel foam to mount the receiver under the tray and there is plenty of foam to do so. After lunch I'll dremel that and start the receiver and MCBe mounting and wire management. The MCBe will be mounted vertically flat up against the very back of the bay.

Doing all this will give me about another two inches I can move the battery back though I have no issue balancing as it was stock.

Evan - Looks like a very clean installation. If you had the desired CG with the stock battery tray location, what was the reason to move it 1.5" aft? 8S? Different fan? Other motivations?

How much additional depth was cut into the foam to make space for the Rx height under the tray?

[Evan D]

I moved it in anticipation of needing to move the battery back from the stock marks to get a desired in flight balance. Just about every EDF seems to need this, sometimes 25-30mm aft of the stated balance spot in the manual. The screws lined up so it was just where I placed it. Also, this covers the wiring mess at the back.

All my first days flying was done about 5-7mm behind the marks. I flew two 540g 5000 and two 640g 5200 packs that day. All needed a bit of push inverted and the elevator needed 3mm of up trim. Today I am only taking the 5000's to see how moving balance back further is. Also taking out my 70mm which also flies on the 5000's.

I do not anticipate going 8S, I have removed 8S set ups from my other 80mm planes, most notably my Gripens, and don't want to do it on this one. The vertical is really my biggest negative and I'll live with it.

There is at least an inch of foam, I dremeled about 1/2", maybe a little less, 3/8". I also dremeled a little to the sides under the ply mounting plates to allow room for wires on either side of the receiver. I ended up dremeling out a lot more than in my picture above.

In addition to moving CG back todays tests will be seeing how raising the flaps and maybe aileron up slightly effects flight and that 3mm of up trim I'm flying with.

[Evan D]

Curious about weight I weighed some planes. No batteries included in the weights and all fly on the same batteries.

My 80mm F-22 is 2570g. Gripen w/ TV is 2540g. L-39 w/ drop tanks is 2300g. My 70mm (also flies on the same batteries) is 1730g.

I can understand the lack luster vertical.

[Fast N Light]

Very interested to hear how it goes moving the CG back. My 5300mah lipos are ~685g so it sounds like they will have to be all the way back just to get the FW CG.

I drafted up a 3DP battery tray with stanchions to make space below for the Rx. There is quite a lot of clearance under the hatch since cockpit is forward. 6mm and 12mm rise versions are shown. 6mm looks good in the plane. 12mm might be too much. Printing now to see. Splitting the difference from 6-8mm with foam cutting might give a good balance based on your experience.

[Fast N Light]

It looks like there is plenty of room for the 12mm lifted tray with stock lipo position. The tray top deck is ~1mm higher than the top surface of the blue box. Drop check to the foam indicates a ~23mm tall space for Rx.

The distance from tray top to bottom side of the aft shelf/hatch ~45mm. So it could be a snug fit as you move the lipo further aft from the stock limit. Depending on the lipo height (6S lipo 5k-6k ~44-49mm) something less than 12mm of tray lift may be needed. Easy to adjust in the 3DP slicer software.

Hatch goes on 12mm w/o contact with 6S 6200mah lipo (~44mm tall).


6mm lift looks fine as well


Tray weights
6mm 14g
OEM plywood 16g
12mm 18g

[Evan D]

Well, great day experimenting with the 80 and filling in time with the 70. I am getting happier with the 80.

I now have the CG at 25mm aft of the marks under the wings. It still needs a little up elevator comparing the trailing edge to the pointy things on the back of the fuselage. Needs no push inverted and still super stable. Also I put in a small aileron to elevator mix that gives it a small amount of up elevator with either left or right aileron, made the roll much better axially. With tailerons and full span ailerons she does a very nice roll.

To get the CG I have the battery back to the back of where the plate was that had the MCBe and am using lighter packs, 560-570g. The back of the plate...

The only oddity I still have is that when I give anything over about 1/3 reverse thrust it veers off line.

[Fast N Light]

Too quiet here....

The afore mentioned battery tray is done ... 3D print files can be found here.

Acknowledgement to Evan for sharing his approach.

Evan - Happy to give you a 100% discount for file access. If you don't have a printer, I'll print it and send it to you at no cost. PM me if you are interested.

[Evan D]

Nicely done. Thanks for the offer but I’m good with how I have mine.

[Nickel]

I am looking for information on eliminating ailerons and going full scale tailerons. Has anyone done this, if so, what did you have for limits, expo and d/r on the ailerons function of the tailerons.. I dont need and do radical maneuvers. Just normal flying.. getting to old and slow on the sticks.

Also, does anyone have the thrust/oz on this bird. I have done the arf and put one of my F-14 motor/fan.. its an outrunner.. so I can compare what my thrust is compared to the PNP innrunner. Normal 6s setup only.

Thanks, Nickel

[Philldee]

Bummer, my Bifurcated Afterburner died after the 5th flight in my 80mm F-22.
I suspect the little inline "transformer" to be the culprit. Nevertheless awaiting new inventory from Motion to replace it.

[Fast N Light]

Bummer, my Bifurcated Afterburner died after the 5th flight in my 80mm F-22.
I suspect the little inline "transformer" to be the culprit. Nevertheless awaiting new inventory from Motion to replace it.

You can make one with the info on Kallend's blog

https://www.rcgroups.com/forums/showthread.php?3313547-Make-a-Do-it-Yourself-EDF-afterburner

I did the easy version using a ground vehicle controller
https://www.amazon.com/dp/B00JXI3H6Y..._b_fed_asin_ti tle_6&th=1
The info on how to do it was buried in the same thread.

[Nickel]

The best afterburners are from Chris Wolf at RC Geek.. they never fail, as you would expect they are not cheap, the best rarely are. https://www.thercgeek.com/the-centerburner I have 6 of these 70mm,80mm,90mm