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Old Jun 04, 2008, 07:51 PM
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Sweden
Joined May 2008
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Help!
Setup for BB V2

I bought a Bad Boy V2 for a couple of month ago, still not in the air ......
First I think to use a Saito 82, now I think to use any electric motor....
What would be the perfect setup if I go electric? Want to have as much power as the Saito 82 but in electric choice....

/ Mikael
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Old Jun 04, 2008, 08:26 PM
Don't worry about it!
j.m.'s Avatar
Raleigh NC
Joined May 2008
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Check Hobby City. Not sure as to which specific motor to use, but they are sure to have what you need. (and for super cheap too.)
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Old Jun 04, 2008, 11:31 PM
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What is the weight range for the plane, preferably the max weight so that we can help you select a power system that will perform even better than the Saito.
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Old Jun 05, 2008, 03:26 AM
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Sweden
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The specs on the Bad Boy V2 is:

Wingspan-53"
Length-44,3"
Weight-4,5lbs

/ Mikael
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Old Jun 05, 2008, 08:30 PM
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4-5 pounds eh? That means you will want a power system with about 800-900 watts of power, for unlimited vertical, and easy hovering. I don't know of any systems off the top of my head with that power, but you can browse around on Hobby City, and see what they have there.
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Old Jun 05, 2008, 09:04 PM
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United States, PA, Lancaster
Joined Jun 2003
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There's basically two ways to go using outrunners - a biggish 30mm system running at 650-800 watts (Hacker A30XL, Power32, etc.) or a 40mm outrunner running 800-1200W (Torque 4014-T570, MotrolFly 3625, Hacker A50-10S, etc.). 4S-5S 3200-3700mah is typical. A buddy who has tried both recommends the lighter 30mm system, I prefer the larger one. One's lighter, one's faster.

I have to disagree with Xpress's advice and recommend buying a name-brand motor if possible. I do, however, think that HC would be a good place to look for lower-priced lioply batteries.

The biggest issue we see with BadBoy conversions is the lack of a good battery-mounting location. Profiles are tough in the this regard. You can try it up high, or below the wing, and most people seem to agree that perfect location would be right in-between, or basically in the location we put the battery inside the fuse on non-profile airplanes.

Right now, I'm working on an Extreme Flight Chinn Yak55 conversion, I'm taking the time to fabricate a battery position inside the wing for this reason.

Good luck, it's a really fun plane.
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Old Jun 05, 2008, 09:46 PM
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I've heard good reviews about the Turnigy motors that Hobby City sells, but yeah, Hacker motors are definately a top choice if you want quality.
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Old Jun 06, 2008, 04:49 AM
IMK
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Australia, VIC, Melbourne
Joined Aug 2005
177 Posts
I recently completed an electric conversion of my BadBoy.

It was an absolute success.

My set-up is as follows:

Hyperion 4020-14 (574 kv) motor

Xoar 15x8
Hyperion 5S 3700 25c
Hyperion 80 amp Opto ESC
800mAh Eneloop NiMh Rx pack

Produces around 1100 watts and gives ballistic pull out from hovers.

Ready to fly weight is just over 5 lbs. It feels light in the air and does all 3D with authority. The large prop seems to help with torque rolls and rolling harriers.


I usually fly for around 8mins with about 2 more for reserve.

It was a straight forward conversion. Everything except the RX is mounted on the outside.

I'll try to get a few pictures if you're interested
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Old Jun 06, 2008, 04:54 AM
IMK
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Australia, VIC, Melbourne
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177 Posts
With respect to the battery, I mounted it on the side using velcro and a strap (I first glued 1/64 ply to the fuz to provide a better surface for velcro adhesion).

To balance the battery I first figured which wing was heavier and mounted the RX, RX battery and ESC on this side. The 5S 3700 was then mounted on the other side. Believe it or not it balanced perfectly.

The balance in KE was pretty close. I mounted the battery high (above the centreline). The weight of the LG helps somewhat to offset this.
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Old Jun 06, 2008, 04:58 AM
IMK
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Australia, VIC, Melbourne
Joined Aug 2005
177 Posts
This is my second 40 size profile electric conversion. Another tip about placement of gear to achieve the best balance is to tape everything on before deciding on the final location.

What I like about electric profiles is the ease of access to everything - its on the outside. Some may think this looks ugly, but hey, it flies great.
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Old Jun 06, 2008, 09:06 AM
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Sweden
Joined May 2008
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Thanx for good answers!

Xpress:
I have an Max BLO 2204 motor in my foamie and it seems to be exactly the same motor as the Turnigy, unfortunately it begins to sound very bad sometimes when I push it harder... Think I buy a more well-known motor, but thanx anyway.

blucor basher:
Is there any pictures of the conversion?

IMK:
WOW!! Yes I'm really interested of pictures! Videos is also welcome!!
What receiver/servos do you use?


/ Mikael
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Old Jun 06, 2008, 09:32 AM
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frisco,tx
Joined Oct 2003
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id go with a scorpion 4020-16 on 2 3s packs of 3300 in series. one one each side of the fuse. this will allow a big prop and the packs wont be so bulky
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Old Jun 06, 2008, 09:43 AM
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Dang, this BadBoy profile sounds like a good one. I'll have to take a look at it.
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Old Jun 06, 2008, 10:42 AM
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frisco,tx
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watch an electric video of the BB on eflightline.com
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Old Jun 07, 2008, 05:13 AM
IMK
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Australia, VIC, Melbourne
Joined Aug 2005
177 Posts
I used JR DS 589 digital servos (5.2Kg torque) and an 8 channel Hitec RX. You could find a much lighter RX, but thats what I had on hand.

I'll see if I can get pictures next weekend if the weathers good.
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