Hurri 550 motor

[Mikej]

I use 14 toth pinion, 50 tooth primary gear - I get 6 - 7 minutes on 2 x 2200 batteries

[arne997]

I have the newer standard Gaui motor with I think 1500w 1110kv.

What is the difference between that engine and the Z30 1110kv?
Is it the same power?
My head bog at max pitch around +10 deg and 1900rpm. 515mm blades.
I would like the Z20 but I dont whant to lose power.

Is the Z30 really better than the Gaui eng?

[michael88997]

well my z30 i fly at 2500 rpm and at +11 pitch it doesnt bog... i believe its more efficient and runs cooler

[worldofmaya]

Z30 has more torque than the Gaui... something which could become a problem when flying with a plastic frame. There are posts which say that the Z30 produced cracks around the motor mount. No problem with Gaui 1,5kW engine. Only problem with Gauis motor, consumes quit a lot of power and produces more heat than the other one... I recently exchanged mine and now I get 1 min more flight time with at least the same power. 1 min is quit a lot if you get 3 1/2 to 4min with the Gaui motor.
-klaus

[michael88997]

i have the plastic frame and no cracks after 20 flights so far...

[BL]

Three friends of mine are using Z30A with plastic frame, no problem.

One of them is flying hard 3D, also no problem.

[worldofmaya]

But you should have that in mind and check that from time to time. I also don't think that this is really a problem. Perhaps they (posting this) had an older frame. The first ones were more flexible.
-klaus