Hacker A30-8XL and Z30-1100 on 4s-6s Lipos

Al P · 09:50 AM

Last year I started with an A30-8XL in my Logo 10 with 23T and 4s Lipos. I agree it's a great beginners setup for your first Logo. Now, I'd like a little more headspeed/power but nothing wild. I began by exploring possibilities with the Hacker motor. Hacker/Aeromodel suggested against 5s Lipo or a larger pinion. Instead, they recommended the A40 as an upgrade. Last time I checked with them, it was still "due any day".

The Z30-1100 has been well-accepted in these forums and has been recommended by fellow Logo pilots for 5s and 6s Lipos. I ordered one and a 23 T pinion to compare with the Hacker. Just from a few hovering sessions with tach and wattmeter it appears to draw about .6 Amps more than the Hacker but was cooler to the touch. Headspeed is 200rpm faster. I'm not sure how this happens with both motors so similar in Kv (Hacker 1100, Z30 1110) . Before we had access to the tach, my son and I both agreed the rotor speed sounded noticably faster.

So I'm left with a few questions:

1) Why doesn't Hacker recommend higher than 4s for a similar Kv motor ? (maybe because it gets VERY warm from 10 minutes hovering at 80 degrees ambient) Physically, the Z30 is much more motor... about 130% the size of the Hacker. I wished I had the camera along when we swapped motors for a comparison shot.

2) Am I lugging the Z30 with 4s and 23 T pinion ? Average Amp draw hovering was 21.13 vs. 20.45 with Hacker setup.

big bird · May 02, 2007, 07:45 AM

the reason the Z motor is cooler is that it's a bigger motor with a bigger Amp capacity - (fatter wires) - so it can handle more power - it too wil get warm when you are putting enough power through it.

Hacker generally rate their motors conservatively - I believe that many are using the 8XL on 5S setups - not sure about 6S - the reason there is an upper limit is that the motors aren't finely balanced and at some point vibration with the potential for damage becomes an issue - Bearing wear is probably the first culprit in this scenario...

Theoretically a very finely dynamically balanced motor should have no upper limit...obviously you will run into other problems - what the esc can compute, and motor efficiency I believe suffers at very high RPM in outrunners due to so called iron losses - but I'm no expert on any of this...

May 01, 2007, 08:29 AM	#1
Al P small electrics r BIG FUN Iowa Joined Aug 2000 4,242 Posts	Hacker A30-8XL and Z30-1100 on 4s-6s Lipos Last year I started with an A30-8XL in my Logo 10 with 23T and 4s Lipos. I agree it's a great beginners setup for your first Logo. Now, I'd like a little more headspeed/power but nothing wild. I began by exploring possibilities with the Hacker motor. Hacker/Aeromodel suggested against 5s Lipo or a larger pinion. Instead, they recommended the A40 as an upgrade. Last time I checked with them, it was still "due any day". The Z30-1100 has been well-accepted in these forums and has been recommended by fellow Logo pilots for 5s and 6s Lipos. I ordered one and a 23 T pinion to compare with the Hacker. Just from a few hovering sessions with tach and wattmeter it appears to draw about .6 Amps more than the Hacker but was cooler to the touch. Headspeed is 200rpm faster. I'm not sure how this happens with both motors so similar in Kv (Hacker 1100, Z30 1110) . Before we had access to the tach, my son and I both agreed the rotor speed sounded noticably faster. So I'm left with a few questions: 1) Why doesn't Hacker recommend higher than 4s for a similar Kv motor ? (maybe because it gets VERY warm from 10 minutes hovering at 80 degrees ambient) Physically, the Z30 is much more motor... about 130% the size of the Hacker. I wished I had the camera along when we swapped motors for a comparison shot. 2) Am I lugging the Z30 with 4s and 23 T pinion ? Average Amp draw hovering was 21.13 vs. 20.45 with Hacker setup.
	Last edited by Al P; May 01, 2007 at 09:50 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Discussion Hacker A30-8XL motor questions.	litespeed	Electric Heli Talk	16	Jul 20, 2006 10:54 PM
Discussion Hacker A30-10XL getting hot on 4s	GoBucks	Electric Heli Talk	3	Jul 04, 2006 09:44 PM
For Sale Hacker A30-8xl	tsuitt	Aircraft - Electric - Power Systems (FS/W)	2	Mar 21, 2006 07:39 PM
Wanted Hacker A30-8XL	chopped_d	Aircraft - Electric - Power Systems (FS/W)	0	Nov 24, 2005 09:55 AM
The new Hacker A30's are up on Aero-Model	Basketcase	Power Systems	1	Jun 30, 2005 02:34 PM

RCG Sites

About RCG

Features

Tools

Media

Topics

May 02, 2007, 07:45 AM	#2
big bird Registered User Belfast / Dublin Joined May 2004 1,536 Posts	the reason the Z motor is cooler is that it's a bigger motor with a bigger Amp capacity - (fatter wires) - so it can handle more power - it too wil get warm when you are putting enough power through it. Hacker generally rate their motors conservatively - I believe that many are using the 8XL on 5S setups - not sure about 6S - the reason there is an upper limit is that the motors aren't finely balanced and at some point vibration with the potential for damage becomes an issue - Bearing wear is probably the first culprit in this scenario... Theoretically a very finely dynamically balanced motor should have no upper limit...obviously you will run into other problems - what the esc can compute, and motor efficiency I believe suffers at very high RPM in outrunners due to so called iron losses - but I'm no expert on any of this...