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noiying
11-12-2007, 03:55 AM
Hi,
I'm new to electric flight having just moved over from glow.

I want to buy this Sebart Katana

http://www.bigginhillmodels.co.uk/70002/info.php?p=3&pno=0&pid=979313&cat=&ack=9&search=&sought=

the motor included with it is the A30-12L:

A30-12L
1000Kv (RPM/V)
143g (5.1oz)
25A continuous, 37A burst
3-4 cell LiPo
Shaft 5.0mm

How will this spin a 14x 7 prop as stated in the sebart advert?

If it can, could I replace it with this?

http://www.giantcod.co.uk/brushless-outrunner-motor-emax-2810-1100-p-50.html


If not which emax motor would suit it?

Any help would be greatly appreciated.

Thanks.

PeterO
11-12-2007, 09:24 PM
The manual says
A30-12L + APC 13x6.5E
A30-14L + APC 14x7E

I have the 14L in mine and it certainly spins a 14x7 OK :)

PeterO

Mustang11
11-12-2007, 09:44 PM
Greetings,
I’m flying my Katana 30E with a Xmotor 3548CA-5T 650 Watts (.32 Gas) from 2DogRC and it will accelerate straight up on a 4S 4000 Mah pack; hover is about ˝ throttle or less and this is on a 14X7 APC-E. The motor is $66 US to boot……… and I'm seeing closer to 850 watts static; hope this helps.

noiying
11-12-2007, 10:27 PM
Hmm, thanks. That emax motor is too small by the sound of it then. What do you think?

PeterO
11-13-2007, 08:01 PM
Hmm, thanks. That emax motor is too small by the sound of it then. What do you think?

I think Mustang11's Katana is some what over powered at 650W in a 2.5lb model.
The specified Hacker setup only takes around 350W in a static test.

Still, that e-max motor is a little on the small size (25A Max).

PeterO

Mustang11
11-14-2007, 12:36 AM
Hello again,
Interestingly enough my Katana weighs right at 4 lbs with 4S 4000 mah battery......... which gives about 200W per pound. Just about right in my book:Q. The only time I use the power is in the vertical FWIW.

PeterO
11-14-2007, 09:29 PM
Hello again,
Interestingly enough my Katana weighs right at 4 lbs with 4S 4000 mah battery......... which gives about 200W per pound. Just about right in my book:Q. The only time I use the power is in the vertical FWIW.
Hmmmm...Maybe the 2.5lb figure is the "dry weight" without battery... I'll try and weigh mine tomorrow.
PeterO

noiying
11-15-2007, 08:10 AM
The emax motor is 40 amp max if I'm not mistaken. Would this be ok do you think?

PeterO
11-15-2007, 07:25 PM
The emax motor is 40 amp max if I'm not mistaken. Would this be ok do you think?
Hmmm I must have misread the page as it is 38A Max.
PeterO