axi for the hornet...wow!!

[Tele]

well I have just had my first flight of the axi on the hornet ...

there is WAAAAAAY more power from this motor then from the himax!!!!! at no stage dit it ever bogg and I was punching the stick rather hard.

I got 20 min out of one set of batteries 3 cell 1500mah
I normaly ony get about 18 min befoer ground effect.
and to top that all off I decied to feel the motor to see how hot it was ........ let just say I was hotter then the motor!!! it was almost cool to the touch and that was directly after flying for 20 min non stop!!


I am very impressed with this motor...... but dont buy the motor from hobby shack get the motor from mack if he has them (95$) or from SHS at ($110) hobby shack quoted me ...wait for it $180!!!!!!!!! ....oh! it comes with the pinion though!! ( whooopti do!!! ) ( for $70 you can buy about 20 pinions!!!! )

I am very happy with this motor ..Thanks heaps mack!!!
( and great service too!!)

One of theese days we will have to meet face to face

cheers all

doug

[MicroHeli-Nut]

U flew it?


Eh Doug, dun make me regret on the Etecs1200 HP cells leh!

Oh mi god... my hornet's still not together yet...

[loyn]

Hi tele what is the model of the motor you are using? any chance it can be used with 2S cell pack?

[Fit]

Loyn, its a 2208/20 the smallest and highest kv motor in the AXI line. If you use 2 cells, you will have to use a very large pinion gear to get sufficient headspeed and thrust.

Tele haha agreed about the no bogging part..... this thing has loads of torque
But I still want more power (insert Tim Allan grunt here)
I wasted $20 by buying at SHS a week before I knew about mack

Walt Ferrar tested it and compared to the best motor (HACKER B20) and the AXI is a very close second. It has similar power to the hacker but less efficient. The hacker will maintain the same power level for longer than the AXI could. But at half the price of the hacker, can't complain

Ray don't worry I just came back from testing the 1200HP's duration and it lasted around 18mins of just hovering. 20 seconds later, the heli has landed as the LVC of 7.2V of the P10 kicked in.

Oh yeah one more thing related to the AXI:
Do not buy the Kawada Pinion! I wasted $9.60 only to find out it doesn't fit! The setscrew is positioned too low and the thickness of the pinion is on the thin side and is perched up high. As a result to get the pinion and the spur to mesh fully, the pinion has to sit down low on the motor's shaft. The setscrew holding the pinion hits the frame a little. But a little shaving here and there will make it work.

[Super-Hornet]

Hey Fit... u using 7.2V as LVC for 3Cell? I thought 9V is the recommend value?


Super-Hornet

[Fit]

9V is for 4 cells. Actually most of them recommend 6V cut off for 3 cells although the instructions instruct 7.2V.

Because if you do 3D, its possible for the voltage to drop and cause the LVC to kick in

[Tele]

true but I dont want to kill a pack of lipos..so I am going keep mine set to 9v .....also my 3d work is getting there sill not able to cut the grass with the bird yet ( unless I hold it with my hand )

[YZY]

whos mack

[MicroHeli-Nut]

YZY,
He'll be online soon enough. Search the user's post and PM him.

[mack]

hi,
I was rather busy lately with oversea shipment and couldn't get online.

I am trying to get the AXI at a cheaper price for our local friends here so that everyone can enjoy the hobby and improve on our skills. If the prices from the LHS are too expensive, then we could not move up. I hope that by doing this, the LHS have no choice but to lower the prices.

AXI 2208/20 is sold at $90. If there are demands for it, let me know and I would bring in more next time.

Have you guys heard of the MP Jet brushless outrunners? I would like to get some of them for testing.

I hope to meet up with Doug one day.

Cheers,

[loyn]

Hi mack, I am interested in both motor but not sure which will be better it is good to know someone is helping out in the local hobby supply to ensure a low price. Your work is much appreciated and please keep us / me on the price development.

Once again thanks!

[Tele]

hear hear!!

great work Mack.

one day we will meet.

[MicroHeli-Nut]

Mack,
Yes i've heard of the MP Jet Brushless, apparently they are a good choice for planes.

[Super-Hornet]

Hi all

I have some concern about using Outrunner for Helicopter. I may be wrong here.... Outrunner coil requires moving air to cool the coil. That is why Outrunner motor normally have big holes at the casing. Outrunner should be more suitable for Airplane due to the nature of airplane to move forward and hence it has cool air flowing through it. Further more, the air thrust from propeller will cool it also. In Helicopter, it may not have such feature to cool it down.

As for inrunner, the coil is at the casing and therefore can install heat sink to cool it.

Oh... BTW.. If I'm not wrong, Outrunner inherited fast RPM where inrunner inherited high torque.

Super-Hornet

[Tele]

I think due to the higher diam' of the outrunn it produces a lot moer tourque then the inrunner. as for the cooling ....

The himax that I had on the hornet initaly would run at about 80-90' c after 20 min of hovering .... the out runner was bearly at 30-40'c after the same amount of time. in my eyes ..the outrunner was much better in the way of tourque by a long shot over the himax...this could have soemthing to do with the gear ratio that we are using 26 tooth compared to a 12tooth pinion for the himax.
all in all ..there is no doubt in my mind that the axi is a far better motor for the hornet then the himax ..... and definatly better then the copy hackers of the feigao.

just my two cents worth
cheers doug