Extreme Flight Owners Thread

[Enterprise]

12s 5000 is more appropriate for a 50cc conversion I think and working with a 12s 3300 type setups will be more interesting as many people have these laying around for the 60" planes. Might have to prop down to a 21x10 or 20x10 to get the flight time. I think A60-8S is the best fit of what is out there right now.

https://www.aero-model.com/8_72_112...er-Brushless-Motors-A60-Series/A60-8S V2.html

There is always scary expensive options like this.

https://www.aero-model.com/8_86_192...shless-Motors-Q80-Series/Q80-13S 28 Pole.html

 

[gyro]

If I go electric, I'll probably find a motrolfly motor to use if I can... They seem to run cooler than a hacker.

For a 12s 4000 setup, this pack looks cool, and is only $156! Just wonder if it'd fit.
http://www.buddyrc.com/glacier-30c-4000mah-12s1p.html

 

[3dbandit]

For the 78 mxs(when it comes out),

I'm looking at running the hacker a60-18L. It should do 3500 watts.

I'm thinking 12s 6000mah glaciers should suffice.

It should come in around 14.25-14.5 lbs(i think)

What do you guys think? Too heavy?

 

[SnowDog]

12s 5000 is more appropriate for a 50cc conversion I think and working with a 12s 3300 type setups will be more interesting as many people have these laying around for the 60" planes. Might have to prop down to a 21x10 or 20x10 to get the flight time. I think A60-8S is the best fit of what is out there right now.

https://www.aero-model.com/8_72_112...er-Brushless-Motors-A60-Series/A60-8S V2.html

There is always scary expensive options like this.

https://www.aero-model.com/8_86_192...shless-Motors-Q80-Series/Q80-13S 28 Pole.html

FYI I've heard people are having trouble with Castle ESC's for 28 pole motors.

 

[Aeroplayin]

That Q80-13S is worth every dime. The Q80 motors I had are really top shelf, but they are expensive. I'd worry about the motor diameter tho. I sized my 7M and would have to move the thrust line down to fit it under the 78's hood.

The 18L is a 149Kv motor, which means that even on 12S, you're not going to get 3500W unless you are using at least a 24x12, and the 24 may be a bit big for the 78 unless you jack up the landing gear and go with bigger wheels. I guess an electric 22 inch 3-blade may be an option, but I have no experience with them on 3D airframes.

This is Tom flying the 78 at 14 pounds even, with a 22x10 Xoar on 10S with the A60-16M, blowing 3650 Watts at 95 Amps at last year's Deland Huckfest for Wounded Warriors. Sounds like a gas engine on there, but there are other planes in the air.

http://www.youtube.com/watch?v=M4Ul6tsDgLU

 

[quadracer]

The Motrolfly 4330 in 200kv wind works great with 12S 3300 batteries. Comes in about a half pound heavier than the 6S 5000 Motrolfly setups, and puts out over 3kw on an APC 20x8. It makes a 70" Velox do crazy things.

 

[Aeroplayin]

Yeah, that's only the new Edge HV ESCs. The Ice2 HV's work fine. Still have one the 78 with the A60-7S 28 pole, and had an HV160 with the Q80-7M. I am now buying the Jeti Mezon to couple with the 28 poles since 28 pole is one of their settings. I have one in the 74 Extra and it's great, but another very expensive component. But considering burn ups and timing issues, I'll pay the extra money for peace of mind.

 

[Aeroplayin]

The Motrolfly 4330 in 200kv wind works great with 12S 3300 batteries. Comes in about a half pound heavier than the 6S 5000 Motrolfly setups, and puts out over 3kw on an APC 20x8. It makes a 70" Velox do crazy things.

Right, but that's 3000W at 8100 RPMs. The rest of the time, the 21x10 is going to produce more power and thrust on 10S. Actually, as I said earlier, a 21x10 at 6450 RPMs is producing more power and thrust than a 20x8 at 7900 RPMs. I don;t fly around at 7900 RPMs too often when flying 3D, so there is an advantage to the bigger prop. Just ask the heli guys.

 

[gyro]

Right, but that's 3000W at 8100 RPMs. The rest of the time, the 21x10 is going to produce more power and thrust on 10S. Actually, as I said earlier, a 21x10 at 6450 RPMs is producing more power and thrust than a 20x8 at 7900 RPMs. I don;t fly around at 7900 RPMs too often when flying 3D, so there is an advantage to the bigger prop. Just ask the heli guys.

So could a 4330-192 be enough for a 78mxs?

You mentioned a different DM motor?

 

[quadracer]

I liked it on the Xoar 20x6 better, but the 20x8 yielded the highest wattage, albeit a bit slower to spool up. I was pulling 62-65A peak on the 20x6 prop, flgiht times were 5:30-6:00.

Gyro, I don't know that Ken can wind it any lower than 200 kv, he told me that is as low as he could get a 4330 when I ordered mine.