Z30 or Z20 motor?

[BL]

Here attached with the eagletree captured at 100% throttle and it shows 20A at hover.

I didn't save the 18A hover with 85% throttle.

Sorry, pls refer this link http://www.helifreak.com/showthread.php?t=47334

[Timmey]

my machine runs with z-power z20 kv980, 15 pinion on 90% at 2160rpm.
I got only 43A peaks with 11 degree pitch. Hover is about 20A.

[pjones]

Timmey,

What batteries are you running and what flight times are you getting? Also what type of flying are you doing?

Regards

Paul.

[erbrou]

my machine runs with z-power z20 kv980, 15 pinion on 90% at 2160rpm.
I got only 43A peaks with 11 degree pitch. Hover is about 20A.I have the same set-up (z20-980 and 15T pinion with FP 3s 2170mAh batt), but did not fly it yet. I was wondering if the headspeed is too high to run wooden blades with it?

[Kepler]

I installed my Z20 980 today and did 5 flights with it. Used a 14 tooth pinion, 3700 mah packs and 500mm carbon blades. Was a litte dissapointed at first with the power but once I set the govenor to 100%, it wasnt too bad. Power is similar to the stock 850 kv motor, maybe marginally better but the good news is that my flight time increased by 2 minutes over the stock motor with the same setup. First time I have managed 10 minute flight times.

If your goal is adequate power with great flight time, this in my opinion is the setup to be had. Other bonus was that the heli was super smooth and just felt really comfortable to fly with this setup. As much I love the power of the 1100 kv motors, to me they are too hard on the airframe and batteries and as such I think I will stick with this combination for now anyway.

[pjones]

Kepler,

What 3700mah packs are you running, and how did you get them to fit? When you say adequate power, what sort of things were you doing, loops, flips etc.

Regards

Paul.

[oppie]

I thought I read some where the Gaui pinion won't fit the Z20 .....Is that true? and if so what pinion do you use? I just ordered a Z20 from Flying Hobby and they didn't show any pinions as available.

[Kepler]

Paul,

I use Hyperion batteries. I have been using the 23C LVX batteries. These are up there with the best you can buy and hold their peak voltage incredibly well. I have also just bought a pair of Hyperion 4250 mah LCX batteries also. These are rated at 18C but weigh nearly the same as the 3700 mah packs (5 or 10 grams heavier). Also they are about $40 cheaper then the LVX batteries. I have only put one flight through these packs so far and kept it short. They did feel a bit softer then my well used LVX packs but I will wait until I have broken them in before I form my opinion.

So my definition of adequate power.
Well firstly the comments from other people at the club field was that the heli was really hiking around the sky and were surprised how fast the model was in a straight line. Plenty of power for loops, rolls, and flips but needed some collective pitch management to stop it from loosing head speed when pulling over really hard. Unfortunately tick tocks are not in my current box of tricks so I can’t comment on this one.

I think if you are a true 3D flier, the Z20 is not the motor to go for and the Z30 is the obvious choice. However novice to soft 3D, the Z20 is great choice. A great compromise between power and extended running time.

[Kepler]

I thought I read some where the Gaui pinion won't fit the Z20 .....Is that true? and if so what pinion do you use? I just ordered a Z20 from Flying Hobby and they didn't show any pinions as available.

All the Gaui pinions fit fine. The only issue is that the diameter of the Z motors is a little bigger then the stock motors and means you need to take a little bit of plastic off the frames to stop the motor rubbing. This is about a 2 minute job and has no impact on the strength of the frame. This is only needed with the 14 tooth pinion, the 15 tooth and 16 tooth allow the motor to clear without modification.