Official Freewing 80mm A-4E/F Skyhawk Thread

[jackdcannon]

New to the group so I apologize if this has already been covered. Looking to get a little more performance from the A4. Currently flying it stock out of the box, and would like to keep the stock ESC. Would like to purchase from MRC since they've been great to deal with. Also, in looking straight down the tail pipe, it looks like the motor and fan have a slight downward pitch

[Petronio]

Austin love your crazy experimenting...sounds very tempting to try it out.. Did you have any probs calibrating the throttle range on the 150A esc? (Theres some comments in the spare item in erc). Also any prob balancing or squeezing in those two lipos in the battery bay? Its not too spacious in there :Whew:

[fhhuber]

Wattmeter

[AustinChadwick]

Thanks Hawk.... Yes the 6s F-4 would easily handle that. Here's what is crazy, with the KV set up higher on a 6s set up, the watts of putting an 8s battery on the 6s set up is much higher than the 8s set up. Confusing I know.

I went to eCalc and tried to find comparable motors to test, because they don't have anything from motion on motors in their set up. What is the best way to measure watts?

[dahawk]

Austin, Welcome to the Squawk.

Did you have that up on the wattmeter ? I'm not sure why the amp load would be that much higher. On my Phantom, I was going to try running 8S on the 6S 12B 1620kv inrunner setup I have. My thought is that the 130 amp esc I have only drew about 90 amps on 6S and will handle the increased 8S voltage but the motor might not. I was only able to generate 2300 watts on 6S . Maybe worth a try ? I'm swapping this out for the 90mm FMS 12B. anyway. Promises to deliver 3000 watts.

Cheers,

Hawk

[AustinChadwick]

I am new to HobbySquawk. Been a RCU and RCGroups user forever. But love this. I have the A-4, F-14 and F-4.

I saw a question about the 8s set up for the A-4. I have some experience in this. I am the idiot that will test the motors beyond their limits. So here is what I did. I used the stock motor 3530-1850KV and upgraded the ESC to Freewing 150A high voltage with the UBEC. From my experiences, the motors can handle the voltage because they generally stay cool enough. Especially the metal motors. It's the ESC that's the problem.

With this, I ran 8s 4500mm 40c-80c burst and HOLY COW!!!!!!! It's unleashed. Here's the problem. You definitely have to use some throttle management to keep the motor cool. But during the flight, you can manage to go balls to the wall for about 10 seconds, then it's wise to pull back and let it the motor cool.

It has gobs of power. Took off on half throttle with this.

So since this worked so well, I put 10s on the F-4 8s set up. The stock 8s Motor and ESC handle the voltage no problem. Same advice. Throttle management. But the F-4 on 10s is stupid fast. And doesn't bleed in vertical.

Take it for what it is worth, I have burned up so many 70mm and 64mm motors and ESC's over the years by upping the cell count. Seems to work beautifully on the 80mm and 90mm Motion stuff.

[Petronio]

Hey guys, 2 questions:
1. Where are the missiles / fuel tanks spare parts?? I have not been able to find them under the spare parts section..

2. Does anyone know where I can get (or what colour code they are) both grey tones the A-4 has (fuselage top and bottom)?

Would like to retouch the slight scratches..

Thanks!

Pet

[rifleman_btx]

Very nice idea!

[RuthR720]

MotionRC, please consider offering upgraded wheel axles and felt brake pads. I was able to reduce the landing distance to 75 feet by sticking Velcro on the strut. A felt disc would be ideal but I used what I had available today. My flight test was a success. There was only a slight increase in takeoff distance. All that’s required is a threaded axle, nyloc nut, and a felt disc. Braking action can easily be adjusted by tightening or loosening the nut. I posted my test flights on YouTube.https://youtu.be/hpUg-jOeoyc

[DCORSAIR]

Just joined the A-4 club - mine is on order with MRC! :)

Now I just need time to get it built -
Along with my Mig-21, P-38, P-51 rebuild...:Straight-Face:

The A-4 is a keeper once I got it dialed in, you will like it, great flyer, mine got a couple of flights this morning.

[Chief58D]

Just joined the A-4 club - mine is on order with MRC! :)

Now I just need time to get it built -
Along with my Mig-21, P-38, P-51 rebuild...:Straight-Face:

[rifleman_btx]

Pretty cool stuff, I was waiting for the first camera to become a bug on the windshield

[Petronio]

:Cool::Cool: will have a look at them :) Thanks a lot!

[dahawk]

Petronia,

Here's a couple of links about flying the ball ( Meatball):

https://youtu.be/snL4kUsTDOY

https://youtu.be/kJ_3MuXkDvI

https://youtu.be/vUFqnldTUI8

https://youtu.be/nNjV7WwD1Dg

[Petronio]

Ahh I see, got it now xd thanks for the clarification :)

[OV10]

Thanks guys,!! Didnt quite get the stuff about the meatball xDdd

It is a slang the Navy pilots used.......Meatball - The glideslope indication light that pilots watch when they're trapping.
“Call the Ball” is what the LSO would radio to inbound on the carrier.

[Petronio]

Thanks guys,!! Didnt quite get the stuff about the meatball xDdd

[dahawk]

Awesome landing. Must have a meatball to hone in on. Lol

[e4dragongunner]

Greaser!!!!

[RCjetdude]

Beautiful!