What do I need?

[IloveFLIGHT!]

Using GBx stuff, what will push a 20oz slick airframe to 80 mph. Single? Double? Triple? :confused: I figure 14oz of thrust will do. Can this be done for less than 30 amps? 25? I would like to use an APC 6x4 or similar. I am new to winding so be "kind"! LOL. Is the "Mega beater" my way to the sound barrier? Battery will be my short coming. The most I can do is 2P the 2 3S 1450 PQ's I have, which will push the AUW to 22oz.

[BeavrdamElectric]

The Mega Beater appears to be the hottest thing going right now. I'm playing with 2.5 versions, but I'll have to get a better ESC and batteries to use it. Not to mention an appropriate airframe...

Good Luck!

[fly_boy99]

Beaverdam doesn't like my Century mark single stator motor... :(

Oh well yep the MTwallet special is a good route for most folks...

[IloveFLIGHT!]

Beaverdam doesn't like my Century mark single stator motor... :(

Oh well yep the MTwallet special is a good route for most folks...
Fill me in on your specs please. I want to look at all avenues here. Thanks Chris

[IloveFLIGHT!]

I just rewound the himodel 2408-21 that was 21 turns of 3 parallel 30 awg delta, with 11 turns 22 awg delta. It just made 25 oz of thrust at 33 amps on an apc 6x4. (forgot the volts)? Can anyone tell me what rpm an apc 6x4 would be turning to produce the thrust? On the test stand it did heat my battery up, but at half throttle it was still producing 17 oz at 20 amps. I know I could get alot more copper in there, but this is my first wind. (It took me 3 trys before I got one without a short).

[Dr Kiwi]

I just rewound the himodel 2408-21 that was 21 turns of 3 parallel 30 awg delta, with 11 turns 22 awg delta. It just made 25 oz of thrust at 33 amps on an apc 6x4. (forgot the volts)? Can anyone tell me what rpm an apc 6x4 would be turning to produce the thrust? On the test stand it did heat my battery up, but at half throttle it was still producing 17 oz at 20 amps. I know I could get alot more copper in there, but this is my first wind. (It took me 3 trys before I got one without a short).

Our calculator gives ~19000rpm - but that may be inaccurate since it is well beyond the upper rpm range from which our data were derived.

[BeavrdamElectric]

Beaverdam doesn't like my Century mark single stator motor... :(

Oh well yep the MTwallet special is a good route for most folks...

I've never said anything remotely resembling that. He wanted a motor for a fairly heavy plane so I figured 2+ stators was the way to go.

Did you ever tell us what kind of stator you're using? I like 23.8 motors but I've only found 2 thin stators that have thin laminations, together they'd make a good single. Funny thing is, they had cans that will make good doubles with regular 23.8 stators.

Good Luck!

[IloveFLIGHT!]

I've never said anything remotely resembling that. He wanted a motor for a fairly heavy plane so I figured 2+ stators was the way to go.

Did you ever tell us what kind of stator you're using? I like 23.8 motors but I've only found 2 thin stators that have thin laminations, together they'd make a good single. Funny thing is, they had cans that will make good doubles with regular 23.8 stators.

Good Luck!
It is of thick laminations (probably .050), and measured 24.5mm. The stator is 9.2mm thick. From what I have read, this must be piss poor!

[IloveFLIGHT!]

Our calculator gives ~19000rpm - but that may be inaccurate since it is well beyond the upper rpm range from which our data were derived.
Thanks Kiwi, I hope my buddy returns my tach tomarrow just to check. Chris

[BeavrdamElectric]

It is of thick laminations (probably .050), and measured 24.5mm. The stator is 9.2mm thick. From what I have read, this must be piss poor!

It's hard to consider a 9.2 thick stator a single. I'm not going to dispute anybody's results (even if I take them with a grain of salt), but in the original Komodo 283 thread the high RPM heating problem was blamed on the thick laminations. I've run Toshiba singles (same as a Komodo stator, I think they're 0.5 MM laminations) at ~13K and not seen any problem. But that's not going to do the trick on a high speed job.

Good Luck!

[IloveFLIGHT!]

It's hard to consider a 9.2 thick stator a single. I'm not going to dispute anybody's results (even if I take them with a grain of salt), but in the original Komodo 283 thread the high RPM heating problem was blamed on the thick laminations. I've run Toshiba singles (same as a Komodo stator, I think they're 0.5 MM laminations) at ~13K and not seen any problem. But that's not going to do the trick on a high speed job.

Good Luck!
Thanks for the help! I would never claim anything as I am new to this! I thought what I was posting was not real because of my crude measurements. What does 19,000 rpm give me in pitch speed? It does get warm!!

[BeavrdamElectric]

19K with a 6x4E would be 71.97 MPH according to MotorXL.

I just realized you're talking about the stator you rewound. I was wondering what stator fly boy used in his "Century Mark Beater". Sorry for my confusion.

Good Luck!

[IloveFLIGHT!]

25 oz seems very high to me! But my scale is the only thing I trust about my setup. Do the amps sound alright for the thrust?