Hacker A50-14S

[MrMel]

I just ordered a Hacker A50-14S motor (10 pole), have heard so much good about it.

However, not thinking before ordering as usual, the kv of it is 550.

You that run that motor, pinions are you guys using??
My calculations comes up with pinion's which mikado dont create...

(13T mod 1 or 19T on mod 0.7)..

[BobbySmith]

Hi Mel iam running the 17t mod 7 p iam running 2280 on the head this motor pulls Insane power

Bobby

[OICU812]

I am going to run the 17T on it myself, at least the first run. I want the 2200-2250 range at 75% governed.

[BobbySmith]

Shawn i was running the Jeti in fixxed end point and i was @ 85% for that HS

[OICU812]

Thanks Bobby I am hoping to get mine in b4 new year, we'll see. If it is a winner I'll put it on both. :wink:

[MrMel]

Its me that is tired when calculating :)

17T it is then, should be nice to see how it performs.

[WillJames]

Those Hackers sure are cheap. If they hold up it will be a GREAT option for the price as long as they are not to hard on the packs and ESC.

How hard on things is it B, and how much flight time are you getting?

[BobbySmith]

Will as soon as i get my DX7rx installed i will get some flight times and battery temps

[OICU812]

I was really hoping to get ahold of a bored out 12 tooth Mod 1.0 pinion as that would bring up a free extra 35 - 50 rpm on the head over the 17tooth mod .7 one but oh well. I just got this one in tonight, first day I get back closer to zero degrees I'll try it out and compare it against what I have tried in past and get some graphs etc.

[cptsnoopy]

A friend of mine was running the A50 16S (490kv) in his Logo10 carbon and said the performance was very good. He also said that it did use quite a bit of power. I assume that means he got less flight time with this motor than whatever he was using before. I checked the hacker motor he was running in his Logo14 after flying and it seemed pretty hot. I will need to get the eagle tree and the temp gun out. :)

[MrMel]

I totally forgot that hacker using 6mm shafts, is it just to drill out the pinion or is there someone selling 17T/Mod1/6mm hole?

[BobbySmith]

Mikado is offering the 6mm bored pinions Mrmel

[MrMel]

Alright, I drilled out my 17T today, worked that too :)

[OICU812]

Well it was -8 deg C but I got a quick hop on mine today. Seemed pretty powerfull mind you I only had my pitch range around 11/11, me just trying to get the HS tached by a freind and keep my fingys warm I didn't grab a temp gun or put on the Eagle Tree. I can however tell you the motor was indeed hot, not warm but hot, even after landing for a few minutes I am guessing it was over 30 deg c to touch, :roll: , this was with the 17tooth and HS was around 2230 @ 75% on my Jazz 55-10-32. Not going to slam the door yet but I was surprised how warm it was given the ambient. I guess the question to those flying in warmer places of the world with these motors is how warm do they run and what temps can these Hackers take,,,, that is the bigger Q now... I will report back when I have some graphed data and more thoughts, for now it was in a small park across road just doing some quick climbouts and tic tocs etc to work it abit.

[BobbySmith]

My guess is Shawn it is a JAZZ issue wiht the motor all the stuff i havebeen testing the Jazz doesnt like motors 8 poles and up it makes them run very hot
I have about 6 flights on the 16s motor and it runs hot but not smoking hot you can touch the motor also the 14s i have around 4 flights on it and it also runs about the same...
The Esprit team is getting together this weekend we are going to be testing some stuff and i will make sure to pull temps





Bobby

[OICU812]

I'll be interested to hear your results Bobby, the Tangos, Actros, and my Orbit also a "10 pole" motor, all run much cooler from what I seen today. But then again it was first flight and I didn't have a temp gun or my fdr mounted.

[MrMel]

I agree with Shawn, it runs hot compared to the Actro, even in 4C it was too hot to touch for any longer moments after one flight.

[BobbySmith]

I will keep you guys posted!!!

Now if only Chandler could keep me from flying my L10 all the time!!!

[fogger]

Hello Freaks,

I need a pinion for testing on my 10S 600 with the hacker A50-14S. I currently have the 18T Mikado 0.7mod on it, but my throttle has to be set to 95% to get ~ 2100 hs.

I'm thinking this may not be leaving my S/C's governor (Jazz) enough head room. So I want to test 19T, but I have been unable to find one... Looks like Mikado only goes up to 18T on the 0.7 Mod.

If I have to I'll get one made, but I'd need details on the correct tooth geometry, so if you have that info I'd appreciate that too.

Any suggestions and other options would be great!

Thanks in advance,

-Fog

[Stefan22]

...so what are your temperature measurement experiments doing according the Hacker A50 - for a few weeks now I also run the A50 (16s) in my L14 with the Jazz 55 - also recognized the hot motor temp after a 7 minute 3D flight - OK
ambient Temp was about 15°C - but what was more important for me I felt the power loss after 3 minutes of flying with the bullet - I don't even think it's the problem with the 10s lipo pack - I'm sure it's because of the hacker that's getting hotter and hotter during flight and this is causing the power loss !

...I'm running with 17T mod 0.7 gov is about 80% - also think of replacing the purple one through a actro.

[fogger]

The last data I took was with ambient around 65F a couple months ago. The motor fairly quickly got to 120-130F and stayed there through the flight. Then after I shut her own it skyrocketed up to about 150F-160F within about 15-20 seconds. I'll try and find the graph. But clearly it was doing an OK job of dissipating heat, just that it seems to make a lot also as evidenced by the large temp spike / heat soak after the motor shuts down. So I'm not worried that it's running too hot, but it is perhaps not the most efficient motor out there.


First graph: High temperature for the day this data was taken (3-17-07) was reported as 99F. Since this was probably a mid-day flight the ambient temp was probably between 85 and 90. You can see the motor starts to cool at first startup then heats up as I use power. The TC is located wrapped around the black ring at the top of the motor. Since this is connected directly to the coils I imagine it is fairly indicative of the internal temps, but probably with some delay in time, maybe 10-20 seconds.


Second Graph: High temperature for the day this data was taken (2-22-07) was reported as 77F. Since this was probably a mid-day lunchtime pair of flights the ambient temp was probably between 68 and 72. You can see ambient temp has a lot to do with the max and average motor temp, this one being quite a bit lower than the march flight...

Touching the motor after you shut it down does not tell you what happened in flight and may lead you to think you're working your stuff harder than you are. Not that letting it sit there and heat soak at 160F is good for the motor, but at least it's not at that temp the whole time I'm flying it... Also my memory isn't too accurate apparently :)

-Fog

[NTM]

Same deal for me 110-130F in flight, with a heat spike after shutdown.
Definitally not effecient, good power though.