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Brushless for Slow Stick

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Old 04-20-2003, 01:52 AM
  #1
Yodasands
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Default Brushless for Slow Stick

Are there any drop in brushless motors for the SS? If so what ESC and battery are you using with it.

Thanks,
Dan
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Old 04-21-2003, 01:47 AM
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Dr Kiwi
 
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Default Brushless for Slow Stick

Dear Yodasands -

As far as I know there are no brushless motors with exactly the same diameter case as the 300C, so you couldn't slide one in straight on to the GWS gearbox, and thus use the stick mount system. However if you can construct an alternative mounting arrangement there are several brushless motor/gearbox combos which you could easily adapt to fit.

I would recommend the MP Jet 25/25-26 (which is geared 5:1), or perhaps one of the Mini AC 1215 series [/16, /20, or Extreme], with a suitable gearbox (I have found the 6:1 planetary VMGM gearbox is as rough as guts, but I have used an all-metal MPY 345 gearbox [3:1] with great success - a Mini Olympus [2.3:1] or a Graupner GR 170303 [2.33:1] works well too).

For either of these you can use the Model Motors 18e+3ph controller, and something like a 7-8-cell 950 KAN NiMH pack (a standard 7-8 cell 600AR NiCd pack or even an 8-cell 5/4AA Wattage-type 800mAh NiMH pack would work too).

Cheers, Phil
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Old 04-21-2003, 02:24 AM
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Peter Khor
 
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Default Brushless for Slow Stick

http://www.megamotorusa.com/videos/SlowStick.htm
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Old 04-21-2003, 05:21 AM
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fourstarforty
 
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Default Brushless for Slow Stick

If you check out ebay under brushless theres a guy selling a 010 astroflight brushless motor hooked up to the gws gearbox, he used the setup in a gws zero.
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Old 04-21-2003, 12:17 PM
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Default Brushless for Slow Stick

Several brushless motors fit, some with slight mods. Lefty & Leroy uses a GWS gear box on his Switchback, with a brushless of some kind.
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Old 06-18-2003, 06:00 PM
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Default Brushless for Slow Stick

I've been using a mini A/C brushless 280 motor on my SS for months. I use the MPY345 part number gearbox at a 3:1 ratio from hobby-lobby. I investigated trying to use the SS motor mount but soon got advice from another brushless slow stick user.

The user wire tied his brushless motor right to the stick. I tried it and it works great. I use foam tape between the motor and the stick and tighten down the 4 wire ties to the carbon fiber case of the mini A/C. It is solid. The brushless speed controler is right behind the motor, before the LE of the wing. It get maximum cooling and hardly breaks a sweat. The gearbox hangs infront of the stick. Very easy.

Brushless+SS = very fun.
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Old 06-18-2003, 07:22 PM
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The Razor motor with an o-ring fit right in my stock gear box. No cutting holes or other mods needed!
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Old 06-18-2003, 10:44 PM
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Default Brushless for Slow Stick

I have an MP jet brushless motor in my SS and it hovers easily. I highly reccomend a brushless motor for it. It is a whole bunch of fun. I did have to make a few mods
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Old 06-19-2003, 03:22 PM
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Default Brushless for Slow Stick

Sounds great. Hey what battery packs are you guys using. I have an 8cell 1100 MAmp NMHi. I get about 20 min averaging at half power. I ask because I'm feeling that the running time might be low.

I do have the habit of full throttling it up to about 500 feet then cutting it to about 1/3 and begin soaring for awhile. I can do that sequence about 4 times before having to switch batteries.
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Old 06-20-2003, 02:06 PM
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Default Brushless for Slow Stick

Aeromicro also sells a Astro .010/GWS Gearbox combo that would be a drop in replacment. You can also get the modified gearbox only, if you already have an Astro 010.

Aeromicro Astro .010

Have Fun,

Jim
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Old 06-20-2003, 08:33 PM
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Default Brushless for Slow Stick

use Wattage 8 cell 5/4 AAA 800mah battery packs. My hobby shop sells them for 24.99 and they last a long time both in the air and overall
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Old 06-20-2003, 11:40 PM
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Default Brushless for Slow Stick

I have mine set up with Astro Flights Geared 010. It hovers on 10 800Nimh cells. Very Cool!!

Jason
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Old 06-23-2003, 06:08 PM
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Default Brushless for Slow Stick

I put the nippy 400 from hobby lobbby made a adapter
it is great and eff runing 6ea li-po's 3sx2p just jacking around
is 45 min run time or 40 touch and goes. CU
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Old 06-23-2003, 07:06 PM
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flyboone,
Which gear ratio did you order?
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Old 06-24-2003, 09:22 PM
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jimbo h

Thanks for that aeromicro link for motor mounts and gear boxes for the SS. I ordered today.
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Old 06-25-2003, 07:33 PM
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why does everyone use gear boxes! cant you go direct drive speed 400?
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Old 06-26-2003, 02:44 PM
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Default Brushless for Slow Stick

I was lead to believe that the un-gearboxed motor ends up drawing to many amps with the strain of turning a direct drive prop.

You do direct drive electric duct fan units.
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Old 06-26-2003, 03:17 PM
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Default direct drive

what about all those other dir.drive planes out there? there are a lot of them. I would think if you put like a 1100mah bat. 7 or 8 cell nmh,maybe a speed 400 mot , then 5x5 carbon prop,I think you could get a looooooong flight time! what do ya think....
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Old 06-26-2003, 05:17 PM
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Default Brushless for Slow Stick

The type of drive you go with depends on several factors. If the plane is a bullet, it will need the high RPM of a direct drive in order to get the eventual high flight speed to satisfy the high pitch prop. That is about the only reason to go with direct drive. Otherwise, you gain efficiency from gearing in two big ways. First, you let the motor operate at a higher RPM for a given prop size. You GAIN flight time as it draws fewer amps. Secondly, you have the torque to swing a bigger prop, and bigger props generate more thrust per RPM.

The problem with most electrics which are fast is the poor performance when the airspeed slows and the propellor stalls. It is similar to cavitation in a water/prop situation. So doing aerobatics where you have a wide speed range is not usually good, particularly when the plane is heavy, as the time needed to regain airspeed is long. If the plane is nimble (like a Zagi) then it can accelerate quickly and it isnt as much of an issue.

Most aerobatic type planes gain performance with gearing the motor. The much greater torque will turn a large prop and the thrust will be excellent for instant acceperation out of low airspeed maneuvers.

A rule of thumb: very fast planes - direct drive. anything else usually is better off geared.
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Old 06-26-2003, 05:29 PM
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Default Brushless for Slow Stick

Adding to what I just posted...
Since the Slow Stick is ...ummm, slow... hehe, it will not be able to keep a direct drive prop out of a stalled condition. The slow stick is a perfect application for gearing. Since you can slow the plane down to a walk and still not stall, a super geared prop might be in order, rather than a fast speed loving direct drive. I would imagine a 14" prop turned by an e,f, g or h GWS gear set might be a terriffic combination. You would easily get better than 1:1 thrust/weight and slow speed 3D-like flight may be the result. I think a snail-paced plane doing 4 foot diameter loops might be a blast.... just wont fall out of the sky.

Oh, and if you start making the slowstick 'go fast', you are misapplying the airfoil existing on the plane, and you really otta buy another type of plane, or get another slow stick wing and complete the symmetry by adding a bottom half. You will not get a really fast plane, the % thickness will love aerobatics, but have big profile drag to hinder overall speed.

As a compromise, cover the bottom of the airfoil...half the profile drag and none of the single-surface undercamber to slow you down. Best bet is to get a plane designed to go fast, not so much of a compromise.
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Old 06-26-2003, 06:45 PM
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Great info.....thank you!
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Old 06-29-2003, 06:31 PM
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Default Brushless for Slow Stick

The Mini A/C in a stock gearbox works pretty good for me. I have also, played around with a folding prop.
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Old 06-29-2003, 06:32 PM
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Folding prop
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Old 06-29-2003, 06:33 PM
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One more
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Old 06-29-2003, 06:36 PM
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Default Brushless for Slow Stick

Also it's agood idea to beef up the wings. I recently went to 1" carbon fiber tape epoxied to the bottom of the wing with bronze wing joiners.
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