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Old 09-23-2011, 09:02 PM   #1
Kmot
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Default hobbico flyzone cessna 182 skylane

Hi all,

I have one of the original Flyzone Cessna 182 models, the one with marooon trim color and a brushed 380 motor.

Based on my experience with two other brushed motor park flyers I know that the power will be marginal and the plane will not perform very well and will basically be no fun to fly.

I want to convert it to a brushless motor system from the get go. I need advice. I still do not know this lekky stuff well. I recently converted my Fun World 400 from brushed to brushless and I chose the wrong type of motor which caused an inflight meltdown and total destruction of the plane and all onboard equipment from the ensuing crash.

Can you guys please advise me as to what motor would be appropriate, ESC, and prop? Thank you!


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Old 09-23-2011, 09:44 PM   #2
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Originally Posted by Kmot View Post
Hi all,

I have one of the original Flyzone Cessna 182 models, the one with marooon trim color and a brushed 380 motor.

Based on my experience with two other brushed motor park flyers I know that the power will be marginal and the plane will not perform very well and will basically be no fun to fly.

I want to convert it to a brushless motor system from the get go. I need advice. I still do not know this lekky stuff well. I recently converted my Fun World 400 from brushed to brushless and I chose the wrong type of motor which caused an inflight meltdown and total destruction of the plane and all onboard equipment from the ensuing crash.

Can you guys please advise me as to what motor would be appropriate, ESC, and prop? Thank you!

Post up as many specs on the plane as possible.
Weight, wingspan, etc, and type of flying you plan on doing.
Also, how large a prop will physically fit?

Dave
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Old 09-23-2011, 10:48 PM   #3
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Copied from:

http://secure.hobbyzone.com/greatpla...FWwZQgodUEGgbg

A Flyzone favorite — now with 2.4GHz control!

Simplicity, realism, state-of-the-art radio technology...they all come together in Flyzone's Cessna 182 Skylane. Fully assembled and equipped — only 4 "AA" batteries are required — the Cessna is just minutes away from the first takeoff. Factory-applied decals top off its scale-like looks...and thanks to 4-channel control, it even flies like a full-size plane.
Features
• Construction: Foam with black, white and maroon painted color scheme
• Wings: One-piece reinforced
• Radio: Tactic TTX440 4-channel 2.4GHz, with trainer switch, Futaba compatible trainer jack, adjustable trims, charge jack on transmitter
• Receiver: Tactic TR.424 4-channel 2.4GHz
• Electronic Speed Control: Tactic TSC600
• Motor: 380 size
• Landing Gear: Prebent .059 inch (1.5mm) thick aluminum with prebent wire nosegear
• Wheels: Three 1 inch (25mm) diameter foam
• Propeller: Two 7x3, one installed and one spare
• Spinner: 1 inch (26mm) diameter, Black in color
• Battery: ElectriFly 7N-J 7-cell 8.4V 1100mAh NiMH (GPMP7700) with Red 2-pin connector
• Charger: 12V DC Peak (GPMM7700)
• Cowl: ABS plastic
• Wheel Pants: ABS plastic
• Warranty: Hobbico guarantees this kit free from defects in both material and workmanship at the date of purchase. This warranty does not cover any component parts damaged by use or modification.
Includes
FlyZone Cessna 182 Skylane Airplane with 380 size motor, two 7x3 props, spinner, 4-ch 2.4GHz radio w/3 micro servos, 4-ch receiver, ElectriFly battery and charger, Electronic Speed Control, phillips
head screwdriver and illustrated instruction manual
Specifications
Type: Airplanes
Wingspan: 35 inch (890mm)
Length: 27.5 inch (700mm)
Control Throw (Ailerons): Up and Down: 3/16 inch (5mm)
Control Throw (Elevator): Up and Down: 5/16 inch (8mm)
Control Throw (Rudder): Right and Left: 3/8 inch (10mm)

I do prototypical scale flying. 8" prop is the largest.
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Old 09-23-2011, 11:02 PM   #4
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Looks like that 15 amp ESC does brushed only.
Roughly call 15A x 8.4v = 126 watts.

Would you want to keep the same batteries or 'upgrade' to lipos?

Does it have a gearbox?

A 380 sized motor on 7.2v I see runs near 20,000 rpm? Anyone have a guess if that's right for this plane?

I'm a bit out of my element, but a quick kva calc, 8 volts, 20,000rpm, 2500kv?

So a 125 watt motor (or a bit less) 2500kv is 'in the ballpark' at a guess.


Dave
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Old 09-24-2011, 04:46 AM   #5
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Thanks Dave! I have LiPo's and that is what I will use with the brushless motor. The stock setup is direct drive.
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Old 09-26-2011, 01:41 AM   #6
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What motors would I look at, at the major online retailers, for examples?
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Old 09-26-2011, 03:22 AM   #7
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Cruise the 'sport flyer' thread, and the for-sale threads for a quick look at who makes what.

If you google brushless outrunner or brushless inrunner you'll turn up a lot.

Dave
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Old 09-26-2011, 04:42 AM   #8
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Something like this?

http://www.hobbypartz.com/86ma03-2205-2300kv.html
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Old 09-26-2011, 01:27 PM   #9
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Mind you I'm guessing a bit on everything, but that looks pretty close.

If you are using a 2S battery, you could go a bit lower in KV, you want I think 20,000 rpm, call it 20,000/11.7 = 1700kv.

Watch the weight, too, if you can measure the weight of the current setup that will help keep you from going too heavy.
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Old 11-22-2011, 02:36 AM   #10
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Default Same Plane, Same Boat, so to speak...

Before I start, I'll let you know I live in Denver, 5000' up.

I purchased the same model about 1 1/2 months ago.

My conclusion is this plane needs LiPo power. The stock 'nim' batt. sucks. I fried the ESC on the test stand, fer cryin' out loud..!

Called Hobbico, they sent out a replacement, AND a new motor. Same as in the '07-ish release...

The motor is fine, just the power supply is lacking...

I'm gonna try a 2S 7.4v 1500mAh to start.

Electrifly makes a nice 12(15?)A LiPo ESC which should work out. Anything is better than this bird's stock setup. This model has potential, it's just it came out in a pivotal time in power systems.
- I called Hobbico a couple weeks ago, asked them if they have any plans on upgrading the P/Sys...
- No joy.

Here's where tinkering pays off...
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Old 11-22-2011, 03:24 AM   #11
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Hi HSteve, and welcome to WattFlyer!

Let me start with a disclaimer: I'm certainly no expert in these matters. I did, with lots of help from here, and with a mistake or 2 along the way, upgrade the power system of one of my planes. (Well, 2. But the second one I just got a package motor/edf. Doesn't really count.)

I'd start with getting the weight of your plane. The weight of the new power system, motor/esc/battery, will be different, but this is a good starting point.

Then start reading:

http://www.wattflyer.com/forums/showthread.php?t=31368

Here's a thread just about powering your model, including the list of desired watts/pound:

http://www.wattflyer.com/forums/showthread.php?t=24238

And then ask alot of questions! I highly recommend shopping at places that give specs of what power a given motor will give based on battery and propeller size. HeadsupRC is one that was recommended to me, and I like it.

Good luck!
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Old 11-22-2011, 07:43 AM   #12
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Originally Posted by CNY_Dave View Post
Looks like that 15 amp ESC does brushed only.
Roughly call 15A x 8.4v = 126 watts.

Would you want to keep the same batteries or 'upgrade' to lipos?

Does it have a gearbox?

A 380 sized motor on 7.2v I see runs near 20,000 rpm? Anyone have a guess if that's right for this plane?

I'm a bit out of my element, but a quick kva calc, 8 volts, 20,000rpm, 2500kv?

So a 125 watt motor (or a bit less) 2500kv is 'in the ballpark' at a guess.


Dave
I've had various brushed motors and if any approached 20,000rpm - I reckon I'd be scraping bits of the ceiling ! If you can get that sort of rpm - no need for BL !!

Here's a similar parkflyer Cessna 182 and gives a spec for BL that I can honestly say is more than enough ... I have this model and it flies on rails. Go for similar in the Hobbico and I reckon you'd be more than happy.

http://www.hobbyking.com/hobbycity/s...idProduct=6331

222kph PKJ,EDF Concorde, Mini4,Mig3,T45,PKJ twin,ME109,Edge540,Cessna182,Skymaster Biplane,F15,F16,Badius,Ultimate,SE5,Qbee10,450 Heli,V911,J3 Cub Founder 9x forum: http://groups.yahoo.com/group/Flysky_RC_radio/
- Subscribe my Youtube: "solentlifeuk"
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Old 11-22-2011, 09:30 PM   #13
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It would help if you had a location under your avatar.

Kmot, are you in the UK?

If you want to stay with the original 7x3.. or maybe 7x5 prop then get thee to GiantCod and get one of these: 48g KEDA TR 2826/22 (~1525Kv) http://www.giantcod.co.uk/keda-thumr...-p-403662.html


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Old 11-22-2011, 09:38 PM   #14
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Originally Posted by HSteve View Post
Before I start, I'll let you know I live in Denver, 5000' up.

I purchased the same model about 1 1/2 months ago.

My conclusion is this plane needs LiPo power. The stock 'nim' batt. sucks. I fried the ESC on the test stand, fer cryin' out loud..!

Called Hobbico, they sent out a replacement, AND a new motor. Same as in the '07-ish release...

The motor is fine, just the power supply is lacking...

I'm gonna try a 2S 7.4v 1500mAh to start.

Electrifly makes a nice 12(15?)A LiPo ESC which should work out. Anything is better than this bird's stock setup. This model has potential, it's just it came out in a pivotal time in power systems.
- I called Hobbico a couple weeks ago, asked them if they have any plans on upgrading the P/Sys...
- No joy.

Here's where tinkering pays off...
Take a look at my previous post......... at 5000' you might well get away with an 8x4 or 9x5 on a similar motor: in the US I'd go with a Suppo 2212/10 (~1435Kv) http://www.bphobbies.com/view.asp?id...7&pid=B1488466


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Old 11-22-2011, 09:41 PM   #15
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Originally Posted by Kmot View Post

Far too high Kv.
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Old 12-26-2011, 06:34 AM   #16
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They now put a 1700Kv brushless motor in that model. It comes paired to a 7x3 prop if I'm not mistaken. I know because I regularly buy my LHS out of 'em! They're great motors for the money but the wire is a bit brittle. I use some hot glue at the base to keep 'em from moving around.

Fair Winds and Following Seas!
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