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2m Electric motor choise

Old 06-01-2006, 02:36 PM
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Ian.W
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Default 2m Electric motor choise

Hi Guys, this is kind of in the wrong section of this forum....

Im just getting the equipment ready for a 74" Extreme flight RC Yak 54. Yes i know its not really a pattern model, but im guessing you guys know far more about igh perfomance E planes than anyone else on this forum.

Anyway, my choise of equipment so far is like this:
FlightPower EVO20 10s1p 3700mAh Lipos
Castle Creations HV110 ESC

The biggest problem i have is the motor now, i've narrowed it down to these few suggestions:

Hacker A60-S
Hacker A60-M
Hacker C50xl
Hacker C50xl-acro competition

Im not really sure what one to get, ideally i really want the C50xl-acro comp, but its incredibly expencive, but VERY light
The cheepest option is the A60, but their nearly double the weight of the C50 but half the price.
Also, what wind is the best? id deally want a smaller prop at higher revs to get rid of some of the gyroscopic forces, can get a bit tricky in a low spin!
And is the acro competition really worth the extra £100 over the standard C50xl?

The model should weight around 10lbs with an OS160, so i cant afford much in the way of weight increase, so is it really worth me buying the C50 comp???

The other thing is, how do i mount the C50? the A60 is pretty self explanitry, but the C50 is confusing me...


any help is greatly appriciated
Ian

ps, heres a pic of the model that itll be in, with a horrible OS 160 in the front (im flying, planes 2nd flight):


Old 06-01-2006, 04:40 PM
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Ian.W
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Default RE: 2m Electric motor choise

After a bit of research i drew this:

mounted on the front (which im pretty certain a C50 does, with the rear supported in a hole with fueltube to absorb vibrations. All mounted on a backplate (drawn in a rush) then bolted onto the firewall like a petrol model with standoffs etc.... does this look good? if so thats great as i have the facilities to make it too

cheers
Ian
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Old 06-01-2006, 05:14 PM
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Default RE: 2m Electric motor choise

Hi, I have quite the same questions, besides the AXI motor appears to be also an options since it delivers huge power and weight just around 4 oz more than de C50 XL. I tend to follow what Jason or the Matts use, so C50 XL is more likely my option. However any comments or suggestions will be welcomed by this pattern flyer also. I´m still open to new options.
Old 06-01-2006, 05:16 PM
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mattyd
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Default RE: 2m Electric motor choise

Have a word with Sprink on rcmf he converted a 68" Yak Think he went with an AXI & also dont forget Plett motors either have heard good things about them.

I would say that be a little careful about making the battery capacity choice. Make it after the motor etc are in as any nose weight can be extra capacity.

But start with looking at setups giving over 1500 Watts and you will be ok If you need a hand with figures ill run it all through Motocalc if you want to give a rough guide just PM me on 3DRC.

Am running myself in a comp arf 2X2 12.5 lb a Hacker C50 15xl with Evo20 10s 5000mah gives about 2500 watts on a 22X12 apc "E" as a guide for you.
Old 06-01-2006, 05:30 PM
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Default RE: 2m Electric motor choise

Ian,

I'd go with the A60 M. Your plane should be able to handle the weight with no problem. The big advantage I see is no gear box maintenance. The lower price is nice too. Pick your winding by the size of the prop and rpm you are looking for. I'm going to try an A60-18M which should give a little higher rpm than the C50 I'm running now.

Jim O
Old 06-01-2006, 11:25 PM
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tuan lam
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Default RE: 2m Electric motor choise

can you tell me what battery it take to run for A-60/18M and how much it cost compair to C50/ TP 5300 in weight ! tuan
Old 06-01-2006, 11:33 PM
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Chris Moon
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Default RE: 2m Electric motor choise

Hi Jim, I am setting up a plane with an A60-20S and should be flying it on Mon or tues. It will probably be running with a 19-10e and rely on controller braking for downline drag rather than the big 21-22" props on the C50 setups
Old 06-02-2006, 12:49 AM
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Default RE: 2m Electric motor choise

Hi Chris,

Let us know how it works. The only problem I see is the max power specified at 1900 Watts for 15 seconds. I'm told Hackers are under rated so maybe it will be okay but I liked the idea of 2200 Watts peak power. I definitely will be looking for a controller with a good brake setup as my Impact doesn't slow down with the 22x12 like Tony F's Partner did.

Jim O


ORIGINAL: ual767

Hi Jim, I am setting up a plane with an A60-20S and should be flying it on Mon or tues. It will probably be running with a 19-10e and rely on controller braking for downline drag rather than the big 21-22" props on the C50 setups
Old 06-02-2006, 03:50 AM
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Default RE: 2m Electric motor choise

ok is the outrunner the better option then?

so if i get an A60-16M, and run a 20x13 on 10s, would this be OK you think??

Matt, PM recieved on 3DRC

Thanks for your help

Ian
Old 06-02-2006, 09:00 AM
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Default RE: 2m Electric motor choise

Ian:

Are you with the Harlow RC club?

DS.
Old 06-02-2006, 11:06 AM
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Ian.W
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Default RE: 2m Electric motor choise

No sorry, im in the stanstead model flying club, about 20miles north of harlow. im thinking of joining harlow when i get my driving licence in a few months.


Well after a long chat with the guys at flightpower, ive decided on the Hacker C50-14XL on 10s packs. Ill use either the jeti or the hacker master 90 acro ESC, should be good power, i hope

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