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Nitroplanes Yak 54 .25 size motor suggestions

Old 03-23-2010, 07:46 PM
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CastorTroy2150
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Default Nitroplanes Yak 54 .25 size motor suggestions

Just ordered this plane..

http://www.nitroplanes.com/newyak543dfu.html

I am not new to flying or even Electric, however, I have yet to buy and piece together a power system for a electric plane. Most that I have bought are RTF or BNF, so the BAttery and ESC?Motor are included. Servos, and other electronics I should be good on, and I have plenty of building EXP. Any ideas on motors,ESC,Lipos would be awsome, maybe even some links! I looked at Hobby City as they come highly recommended with thier Turnigy motors. Thanks For the help!

Pete
Old 03-24-2010, 08:51 AM
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jzrf6c
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Default RE: Nitroplanes Yak 54 .25 size motor suggestions

It really depends on the type of flying you intend on doing. As a general rule, you'll need 100 watts per lb. You could get by with 75 watts for simple flying. But you'll need at least 125 watts per lb for aerobatic flying. I see the plan weight about 2.6 lbs so you'll need at least 260 watts.
Old 03-24-2010, 06:33 PM
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Dr Kiwi
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Default RE: Nitroplanes Yak 54 .25 size motor suggestions

One reasonably useful rule of thumb for IC to electric is: watts = cubic inches x 2000.... thus a .25 equates with 500W... that's a goodly amount for a 2.6lb plane, but maybe worth pursuing.

Ah, I just found this... so a .21 is recommended so that is 420W:


Gas Engine Required: 2c 0.21 cu in
or...
Flying Electric Required:
Li - Poly :11.1V ; 2000-2200MAH ;
Propeller :9"x6" ; 10"x12"
Out runner Brushless Motor :450T Speed ;
Speed Controller : 40Amp.

I somehow doubt a 450T would cut it... but this might:

http://www.hobbyking.com/hobbycity/s..._1400Kv_/_550w

One of the HK reviews:
Very good engine, hard pull and smoth noice, efficiency near 80%

battery Zippy R 2000 3S lipo

APC E 11x5.5 40.9A 403W 9450rpm 74% 1742g (pull)

APC E 10x5 38A 375W 10680rpm 78% 1618g

Turnigy wood 10x4 37A 364W 10950rpm 1598g

Turnigy wood 11x4 41A 396W 9270rpm 1678g
Old 03-24-2010, 08:09 PM
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CastorTroy2150
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Default RE: Nitroplanes Yak 54 .25 size motor suggestions

Ok, that is well within what I want ot spend, but I am looking for decent power, I would assume since that is over 100W more than the mentioned 420W...should have good success with that motor, right?

What about going with this motor/s instead?

http://www.hobbyking.com/hobbycity/s...0_750Kv_/_600W

http://www.hobbyking.com/hobbycity/s..._1100Kv_/_770W

You said the 550 might cut it what about the 600 or even the 770W, how big is to big lol, I will do some 3D, but I am not that advanced yet, basic hovers and knife edges etc....
Old 03-25-2010, 05:03 PM
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CastorTroy2150
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Default RE: Nitroplanes Yak 54 .25 size motor suggestions

No responses I guess, sigh, What I would like to see is if this was your plane to fly aerobat/possible 3D what motor,battery, ESC, and the like you would use from HobbyKing or Hobby City. I would like to have links as well. DR Kiwi, I have read your posts and you seem to be very knowledgeable, so any input you give I would trust...thankS!

Here is what I am thinking of going with...

Motor-
http://www.hobbyking.com/hobbycity/s...dProduct=7708#

ESC-
http://www.hobbyking.com/hobbycity/s...idProduct=2166

Unsure of battery and whatnot, but any help would be great!
Old 03-25-2010, 08:28 PM
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Dr Kiwi
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Default RE: Nitroplanes Yak 54 .25 size motor suggestions

That is a 150g motor... but it certainly should give you good power... if you can fit a big prop (13"+) on your aircraft.

It seems 600-800W on 4s is possible.
Old 03-25-2010, 11:14 PM
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Default RE: Nitroplanes Yak 54 .25 size motor suggestions

DR. Kiwi, please, if you were to power this aircraft on the basis of what performance I am looking for, give me some info and links as to battery/ESC/Motor you would use....I really need some more specific guidence and I think you are a great source. I dont mean to sound helpless but I want to start out right...thanks! Price isnt that much of an issue, Im cheap but will pay for quality. this is a fun flier, and should be funded as such, I don not have to buy fomr Hobby City/King...
Old 04-04-2010, 11:45 AM
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