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motor mount for Stryker

Old 03-01-2009, 09:57 AM
  #51  
carpetbomb
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Originally Posted by ministeve2003 View Post

If your looking for a fast 3cell setup with your batterys...

This is a good selection for you on 3cell 2200's as long as your battery's are decent, like the zippy's or rhino's... its a bit faster than a stock stryker C on an apc 5.5x4.5 prop but pulls about 54 amps (high amp draw)
http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=4200&Product_Name=HXT_28 35_(380S)_3900kv_Brushless_Inrunner

You'll need a 60amp esc, this one works great....
http://www.hobbycity.com/hobbycity/s...eed_Controller



SK
The motor is rated at 40A. Wouldn't you smoke the motor pulling 54A? and/or melt everything around the motor? I've read this motors get pretty hot in normal configurations. Can only imagine what would happen @ 50A +

Lots of good reviews on the hobbycity website for that motor, though. Most people seem very pleased with them.

Some of the reviews have people running 6x4 props, but that seems unlikely. Thoughts?
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Old 03-01-2009, 05:33 PM
  #52  
ministeve2003
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Originally Posted by carpetbomb View Post
The motor is rated at 40A. Wouldn't you smoke the motor pulling 54A? and/or melt everything around the motor? I've read this motors get pretty hot in normal configurations. Can only imagine what would happen @ 50A +

Lots of good reviews on the hobbycity website for that motor, though. Most people seem very pleased with them.

Some of the reviews have people running 6x4 props, but that seems unlikely. Thoughts?
I've had over 100+ flights on it and its still holding up like new.... since 5x4.5 is 54 amps. I don't think 6x4 would be a good idea... even at 54amps it gets pretty hot... (I usually give it a break inbetween about 5minutes) generally a stryker gets great cooling, if it were inside foam or something it might not do as well....

here's a video with that setup 3900kv on 5x4.5
[media]http://www.vimeo.com/2989524[/media]


the 28x35x2700 motor runns pretty good on a 6x4,6x5 prop, I don't remember the amps/watts that it pulled though...

SK

Last edited by ministeve2003; 03-29-2009 at 08:27 AM.
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Old 03-01-2009, 06:17 PM
  #53  
carpetbomb
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Originally Posted by ministeve2003 View Post
I've had over 100+ flights on it and its still holding up like new.... since 5x4.5 is 54 amps. I don't think 6x4 would be a good idea... even at 54amps it gets pretty hot... (I usually give it a break inbetween about 5minutes) generally a stryker gets great cooling, if it were inside foam or something it might not do as well....

here's a video with that setup 3900kv on 5x4.5
[media]http://www.vimeo.com/2989524[/media]
the 28x35x2700 motor runns pretty good on a 6x4,6x5 prop, I don't remember the amps/watts that it pulled though...

SK
Pretty cool video! I liked the low inverted passes. Hard to tell in that video when/if the plane was ever at 100% power due to the music. What kind of performance does that motor give compared to the stock F27C motor?

Regardless - I've been looking for some alternatives, and the price of the motor and their higher A ESC can't beaten. 2835-3900kv and a plush 60A ESC. Think I'll pick up a couple up to play around with. No low inverted flybys, though.
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Old 03-01-2009, 06:35 PM
  #54  
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I think I would estimate a good 30% more speed... a guy at the field the other week was asking me to pickup one of those motors for him... to replace his stock C motor...

I think the only time he was at full throttle is in the very beginning... you'll see it when its very far away comeing back....going pretty slow, then it starts to pickup speed at a very quick rate... and runs out of room at the opposite end of the field... its about 36 seconds in...

SK

Last edited by ministeve2003; 03-29-2009 at 08:28 AM.
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Old 03-01-2009, 09:19 PM
  #55  
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one other thing to note about cooling.... we were previousely using that 2700kv one on a stryker with like a 6x4 and on a Great Planes slinger, but when we took it and put it in a funjet, It burned up after about 3flights from the excessive heat

Sk

Last edited by ministeve2003; 03-29-2009 at 08:29 AM.
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Old 03-26-2009, 11:44 PM
  #56  
computerman0219
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Originally Posted by computerman0219 View Post
Heres my setup...

Parkzone Stryker
HXT 2845 (380L) 2700kv Brushless Inrunner
TURNIGY Plush 80A w/ UBEC Speed Controller
Zippy (Light Max) 2200mAH 3s Battery


Caleb
How can I make our get a motor mount for this motor? Will it fit the stock C mount or will it need a custom motor mount made possible out of angled aluminum? Any idea and pictures would be GREAT!!

Thanks
Caleb
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Old 03-27-2009, 04:01 AM
  #57  
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What is the outside diameter of the motor? If it were smaller, I would have recommended this mount:
http://wingwarrior.com/zen/index.php...products_id=41
A nice clam shell mount. I am pretty sure that your motor cannot use this mount. However, it may be able to use this, assuming the heatsink is out of the way:
http://www.combatwings.com/catalog/p...=Motor%20Mount
I have done a stryker conversion, I used a Mega 16-15-3 with a 5.5 inch prop. I was running a 45 amp esc, and had two, 2600mAh packs in parallel for 5.4 Ah and 11.1 volts. I copied the setup from what is similar to a Zagi, which would do 140 out of a dive. I do not know how fast the stryker was, but it was very fast, and kept up with a turbine jet at high cruise quite well. Be certain you do not lock the battery in a foam casing, it must have clearance to get good airflow which I did not have. As you can see, it was all battery:


I made sure the ESC recieved continuous cooling as well by simply keeping it in the air stream, and one of the batteries puffed on a hot day, which caused an emergency landing as the other battery could not deliver. The model had a carbon fiber spar, as well as a carbon fiber rod running the length of the fuselage. The elevons were wood for strength, and the rudders were made of a stiff plastic material, not coroplast, some type of solid plastic, and they were taller than stock. It was a brick with all the carbon, battery, covering on tape on 3m77 bifurcated tape, but it flew well and very fast. Good luck.
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Old 03-27-2009, 04:17 AM
  #58  
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Thanks for the info. e-sailpilot86! Anyone else have any ideas?
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Old 03-27-2009, 04:28 AM
  #59  
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A 28mm diamter motor(like the HXT2845) should fit in the stock mount. I've put 28mm outrunners in it, Mega 16-15-3, and the HXT 2835.
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