Official Freewing 90mm F-16 V2 EDF Jet Thread

[xviper]

Timing change can be a tricky business. In general, increasing timing on EDFs may give a slight bump in power delivery at the expense of higher fuel consumption. I see it akin to timing on cars when we used to use timing lights and adjusting the distributor position (degrees advance or retard). For high performance engines, one could get an increase in output (with an increase in advance timing), giving the car a bit more get up and go, but if you kept the change over a period of time, you would notice it sucked more fuel. Keep increasing it and you eventually arrive at a point where the engine begins to stumble and hesitate. This is not entirely different from increasing gain on an RC airplane. Increase gain a bit too much and you get oscillation as speed increases, then you have to back it off. With a car, we used to have other parameters that could be adjusted to go along with timing to make it all run "better", such as, carb sizes, intake and exhaust tuning. On our planes, there is little else that is readily changeable to help accommodate timing changes, maybe bigger ESC (like large fuel line), more mah (like bigger gas tank) higher C (like stronger fuel pump), higher voltage (better fuel/additives).

For your EDF, try going to the next step up in timing and see how you like it. Reduce your flight time a little so you don't run out of battery and have to dead stick it in. Check battery usage at the end of the flight and compare with previous flights at the old (default) timing. Usually, default timing is more than adequate for how most people fly. If you look at the ESC's manual under the timing line, you will see (*) to show what the default setting is. You can try the next higher one and see what that does for you. Do a couple of ground runs up and down the runway (but don't take off) and if you notice and oddity in the way the EDF sounds, then put it back to default. Timing on these things usually are: low, medium, high, with some ESCs giving one other level thrown in there. Most of us will likely not feel or notice much difference.

Other opinion may vary.

[f4u ausie]

Hey guys hope U all well now the Nitty gritty.. my friend and I. Have now bought a machine to do change or adjust the ESC timing. A good thing. Mmm anyway I did the beep thing couple years ago with X vipers help. He sorted my problem :partying_face: so is. changing timing from factory settings. An advantage.. or r factory freewing settings generally good. I guess this applies to all. Or most 70 to 90 mm jets. What may. Be a reason to change timing :face_with_monocle:. A different thread may have been order of th day... But this is it. Thanx in advance Craig

[Airguardian]

Lucky you!

[urrl]

Markham Park has lakes and canals near the airfield so that could be why there is almost always ground fog early mornings. Love it.😊

[Airguardian]

+1
Very rare around here though.

[EDF-Jetpilot]

Absolutely cool, I also enjoy flying when there's little fog!

[urrl]

[Airguardian]

Outstanding flying, as usual, and beautiful landing. Have to complement the video work as well, first class and excellent time of day to really show it off
🤙

Thanks!

The smoothness of the video is a mix of dad's dedication and quest to hold the camera as still as possible with a boatload of postprocessing I do afterwards on computer. Each video I post easily takes 1-2 days of work to smooth out. :')

[f4u ausie]

My dx7 was purchased as a 7 channel only I had to upgrade it.to plus.. To b a 14. 7 of which r ghost as hugh calls em. Not that I no how to use them. Mr tech not

[Evan D]

And while many Spektrum receivers with gyros do have the extra channels, virtual is what I call them, not all do especially older ones.

[Hugh Wiedman]

Hugh Wiedman,

When I grow up I want to be you.

Even my ol' Futaba 8J still confuses me.

Best, LB

Careful what you wish for.

Rereading that post I made several errors, not surprisingly. The channels don't go up to Aux 20, only Aux 15, as channels 1-5 are assigned throttle/aileron/elevator/rudder/gear, depending on the aircraft type you input because if you don't use a standard wing type and say if you program 2 separate flap servos, 2 aileron servos, 2 rudder servos and 2 elevator servos each will show left and right and you'll have 4 less Aux numbers (still 20 in total) but you'll need a 10 plug in servo channel RX with that, minimum.

So my flaps end up on Aux 1, and with standard wing types the Aux channels go to 15.

Confused yet, I am but that's my normal state. 🤯

[Elbee]

Hugh Wiedman,

When I grow up I want to be you.

Even my ol' Futaba 8J still confuses me.

Best, LB

[Hugh Wiedman]

Yes, exactly, that matches your explanation of the channels... but there's another one for the gyro control (theoretical channel), so as you wrote, you need at least 9 channels. Since 9-channel receivers are usually unavailable, Spektrum receivers always end up being a 10-channel model. How it can work with fewer channels, always including gyro functions, is beyond me.

All Spektrum gyro receivers actually have 20 channels. The 6/8/10 models have that many "plug in" channels, the rest are referred to as "ghost" channels. So things like gyro controls (such as in flight gain controls and FM) you can assign to a switch and it corresponds to Aux 7-20 (on the 6 channel RX). Only servo plug ins need to go in the 6/8/10 channels. Mixes can also be in ghost channels. 😱

If you have a 20 channel TX, all ghost channels show up all the way to Aux20. A 10 channel TX will only show up to Aux 10. That's why people buy 14 and 20 channel TX's. No 20 channel plug in servo RX's. With a 6 channel RX, you can always get a channel expander or 2 and take advantage of those 20 channels, as long as your TX has 20 channels.

These ghost channels also allow you to assign more than one thing to a single switch. For example, my flaps are assigned to channel 6, Aux 6 and assigned to switch D, a 3 position switch. I also assign ghost channel Aux 20 (or any other unused Aux channel) to the 3 position Switch D and assign Aux 20 as my 3 Flight Modes in the gyro setup. That way, when I deploy flaps, the gains increase with flap deflection that I set gains for flaps up fly around, increasing for take off flaps, and increasing for landing flaps. Gains change automatically as my flaps change. 😁

I do similar things like with the Aux channels assigning TV nozzles to a switch for on/off and tailerons to off/50%/75-100% with a 3 position switch, though the servos are plugged into specific channels.

[EDF-Jetpilot]

The thing was "you always need a 10ch receiver".

I don’t use gyros and prefer Orange receivers. They make 9ch. Many could skip the separate steering, the person didn't ask about separate steering, and use a 8ch Spek with gyro being virtual. And many don't use Spektrum at all.

For you, using Spek and needing a gyro it makes sense.

Yes, that's right... I unfortunately didn't read all the comments completely, sorry.

[Evan D]

The thing was "you always need a 10ch receiver".

I don’t use gyros and prefer Orange receivers. They make 9ch. Many could skip the separate steering, the person didn't ask about separate steering, and use a 8ch Spek with gyro being virtual. And many don't use Spektrum at all.

For you, using Spek and needing a gyro it makes sense.

Yes, exactly, that matches your explanation of the channels... but there's another one for the gyro control (theoretical channel), so as you wrote, you need at least 9 channels. Since 9-channel receivers are usually unavailable, Spektrum receivers always end up being a 10-channel model. How it can work with fewer channels, always including gyro functions, is beyond me.

[EDF-Jetpilot]

This was my reply when F4Ausie asked. Why is 10ch needed?

Yes, exactly, that matches your explanation of the channels... but there's another one for the gyro control (theoretical channel), so as you wrote, you need at least 9 channels. Since 9-channel receivers are usually unavailable, Spektrum receivers always end up being a 10-channel model. How it can work with fewer channels, always including gyro functions, is beyond me.

[Evan D]

This was my reply when F4Ausie asked. Why is 10ch needed?

I would never use that receiver in anything bigger than a 64mm jet. I believe in satellites. This jet is a 6ch jet without extra mixes like tailerons or flaperons. Throttle, ailerons, elevators, rudder and steering, retracts, and reverse. Add a channel for flaperons or tailerons and you have to remove one of the basic six. Want the basic six and flaperons = 7. Add tailerons = 8. Add separate steering = 9.

[EDF-Jetpilot]

Firstly. Need to replace my ar631 Rx because I pull the 1 wire thru the fuse behind the latch then glue .. a mistake.. after near disaster.. was about to rotate and lost power,,around 25 meters from me... After range check. Discovering the 1 wire on rx had pulled out of itself.. lucky,, was b4 rotation...
I'm sure that happened. With flex in the fuse.. ifit was not glued it would not have pulled out.. anyway will replace. It. Sooo. Thinking about flaperons and tailerons.
Hope I got the correct names?? Will b a first setup 4 me like this ..and getting out of my comfort zone.. so can I do it with 6 channel Rx. Or is 8 req. I'm using an nx7 which has been upgraded for plus Rx s. Here is the best part. I have no god damb idea how to do it.. make it simple cause I'm stupid
.

And will it fly differently. And land slower :face_with_monocle: boy thatwas an effort on my fone. Thanx

For the F-16 setup with tailerons/flaperons, you always need a 10-channel receiver. I use the AR10360T with AS3X+ and telemetry in all my EDF jets 80mm and larger. It makes programming everything very easy, including fine-tuning the gyro – a dream setup for the F-16. I fly them all with tailerons/flaperons. Once you've flown it, you won't go back!

[Hugh Wiedman]

Thanks!
For some reason I wasn't receiving mail updates of the forum and didn't see the reply!

Anyway, here's some more! :D

8S
Batteries: HRB 8S 4200mAh (2x 4S)
Flying Weight: 4150g (clean) - 4360g (full ordnance)
CG: 142 - 144mm (32-34mm behind the factory CG marks, depending on loadout)
Receiver: Jeti REX12A Assist
Current sensor: Jeti MUI200

Outstanding flying, as usual, and beautiful landing. Have to complement the video work as well, first class and excellent time of day to really show it off
🤙

[Airguardian]

You make my flying style look like a grandma by comparison, LOL.

Thanks!
For some reason I wasn't receiving mail updates of the forum and didn't see the reply!

Anyway, here's some more! :D

Airgardian. Is your F16 6 or 8s. Great flying.. I expect U have the cg back???

8S
Batteries: HRB 8S 4200mAh (2x 4S)
Flying Weight: 4150g (clean) - 4360g (full ordnance)
CG: 142 - 144mm (32-34mm behind the factory CG marks, depending on loadout)
Receiver: Jeti REX12A Assist
Current sensor: Jeti MUI200