I am looking for an electric plane that will work with the equipement that I have. This stuff is just sitting around and I would rather put it to good use. I'm just not sure if it will work with a plane. I'm sure the speed controler will, but not so sure about the motor.

Please, if any of you have a few recomendations, please post up. Will this motor work with a plane???? and What size plane??? What will I need to complete an Aerobatic Project????


I have a Heli Max 2580kv motor, here is the link:

http://www3.towerhobbies.com/cgi-bin...?&I=LXLBS1&P=7

also a Heli Max 25A speedcontroler, Here is the link:

http://www3.towerhobbies.com/cgi-bin...?&I=LXLBR5&P=M

I also have a 6channel mini reciever just sitting with the need for a home.

Thank you for the help!!!

After looking, I'm sure that I would need a gearbox, but I have no clue what size I would need for using this motor, and I am also sure that the size Lipo used will determine that.

I'm just looking for some starting points. Like, (this) gear box, with (this) size Lipo would work with, (this) size plane and your motor......


Is this motor basically a 400size motor???

I'm thinking maybe this motor mount.....

http://www3.towerhobbies.com/cgi-bin...?&I=LXR584&P=V

and this direct drive....

http://www3.towerhobbies.com/cgi-bin...?&I=LXMWK3&P=V



Will this worK??????? I thnk it will, but what size plane would this fly????

Ok.... here is the math that I have done.......

PLEASE!!!! someone tell me if this is right????

2580kv x 7.4v = 19092 rpm with no load.

32A x 7.4v = 236.8 Watts

What size prop / plane will this power????

Or with a 3S lipo.... 28638 rpm and 355.2 watts.....


I have also heard that for every pound you need 60watts of power..... Is that correct?????? If so then my little motor could power a 6lb model??????[X(] Or a 3lb 3D bird?????

A trainer might fly just on 60W/lb - and you would want a big effecient prop to get as much thrust as you possibly can.

For a fun fly you probably want more around 100w-150w/lb. This means your little motor could probably handle birds in the vicinity of 1.5-2.5 lbs.

That motor is a bit inbetween - too fast for most direct drives setups, and too slow for a gearbox reduction. I've used a 2800kv motor for a flying wing (small pusher prop setup) to good effect - that was with 4s).

I'm guessing you can probably turn a 6x4 (maybe even a 7x5 on 2s) which will fly pretty well anything in the weight range - you just wont have as much thrust as you might want - so your plane will accelerate slowly.

That is kinda what I was thinking.... Accually the Great Planes Electric Yak 54 would be a perfect choice... I was looking at the local hobby shop today, and without the engine block mount in front the tower engine mount and my motor would be a perfect fit.

Here is the link to that plane... what do you thnk???

http://www3.towerhobbies.com/cgi-bin...?&I=LXMUW7&P=0

Accually this motor mount may be a better option.

http://www3.towerhobbies.com/cgi-bin...?&I=LXLCL3&P=V

Hi mate,

I don't think the Yak would be well suited to that motor, unless you could find a 3:1 gearbox that fits. Yaks are borderline 3D models - even in aerobatic setup they are the most fun when they have plenty of thrust for long vertical uplines, knife edges etc. With a prop that wont nuke your motor you would have to fly that thing using energy rather than thust - and there are some things you just can't do with that (like sustained knife etc).

I'm guessing even on 2s you wont be able to swing anything bigger than 7" safely (maybe 8" maybe - but you would need to measure to check).

Cheers,
Oz.

Why wouldn't this motor run on 11.1v 3S at 31635 rpm??? Couldn't I run a 2.33:1 gearbox and get away with 13500 rpm at the prop?????

At 32 amps, wouldn't that turn a 11x4.5 prop without a problem????[&:]

To fly a Yak you need a gearbox. Since the motor is 28mm you need a gearbox suits that size. Cobri gears are superb, and makes less noice than most other gears... maybe this could suit: http://www.allerc.com/product_info.p...oducts_id=1336 I said "maybe" because you have to make sure there are pinions suiting your motor axle.
As long as they state: max32A I would recommend to aim for no more than 25A! I guess the motor is far more efficient at 25 than at 32A. Also: voltage isn`t 3,7V/cell under load. Calculate 3,5V/cell.
3S LiPo and 25A gives (10,5 x 25) 260Watt. Suits for unlimited 3D in a 700 gram model, or nice sport flying for a 1 kilo plane.

Aim for a kV in the 1000-1200 area. A ratio of appr 1:2,4 will bring you close to this and a nice setup. But RPM IRL isn`t 1100x10,5=11550 (kV=1100) but rather close to 8000... Suitable for a 11x4,5.

It's a 2mm output shaft..... I thnk the largest that they make is 15 or 16 "T" in that size........ My output shaft is too small............. that's going to keep me from using this thing..... Oh well, I learned something.

Thanks for the help.