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Old Feb 14, 2013, 06:21 PM
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crashguru,

Sometimes people run a test and read the Wattmeter's displayed results (such as Wattsupmeter) after the test...for peak Watts, Peak AMPs, and minimum voltage.
As you may already know that is somewhat misleading.....but better than nothing.
In cases like this people should raise the throttle gradually in order to minimize the peak AMP "Spike" (due to motor spool up) as measured by a Wattmeter.


ICE ESC's logged data often shows the AMPs a little higher than actual but it is still one hell of great tool.....Way better than a Wattmeter.
I usually go about 1 second (or a bit more) after the peak AMP spike and take my measurements.
For testing people should consider setting the logger to 10 samples per second.


Gryphon
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Old Feb 15, 2013, 05:01 AM
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Joined Aug 2012
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Quote:
Originally Posted by crashguru View Post
Wow! 98 amps? The Amps x Volts = Watts formula does not seem to work.

Here are my static results with the stock motor and pretty much the same setup:

On 5s 3300 with CC ICE 100 ESC using APC 9x9E Prop:
Amps WOT - 69.5
Watts WOT - 1240

Crash
I can post the logs if you want. It pulls 59amps bone stock, only a ten amp increase seems small when jumping to 5s. Someone earlier in the thread had almost identical numbers to mine, but you're right the math doesn't work out unless there's huge voltage sag.
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Old Feb 15, 2013, 03:25 PM
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Turbine Scimitar Thread:
http://www.rctodayshow.com/forum/vie...6&p=2259#p2259
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Old Feb 17, 2013, 02:55 AM
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Joined Feb 2007
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Just got mine in today Pnp. Only took maybe an hour to get it ready. Hope to fly it Tuesday. It's fixed gear for now. I'll go retracts if I like it. I used 8 channels. Gear(fixed for now)2 rudder, TV, and nose stearing. She's a good looking bird.
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Old Feb 17, 2013, 03:24 AM
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United States, AZ, Mesa
Joined Oct 2010
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Great way to set it up. Hope your maiden goes as well as mine did. Use a lot of up trim before you take off. You can always trim back down, but the first take off is a lot different than most other planes. Use tons of expo on the steering, she's real sensitive.
Good luck pilot windsheer.
Garry K.
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Old Feb 18, 2013, 09:26 AM
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+1 to what garry said.

Do not let up on the up-elevator, till you have a good bit of air under you and get her trimmed out.
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Old Feb 18, 2013, 10:33 AM
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United States, FL, Altamonte Springs
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I bought 2, totaled one when I lost orientation. It was circling sweet and calmly for a few minutes. After trimming I decided to do a loop and it rolled to one side (can't remember -top and bottom are a mix of red, black, and white). I ended inverted, panicked, pulled another loop and yet again it rolled so I panicked again and nosed into the ground.

Anybody mod it to help with orientation? Maybe paint the underside completely black?
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Old Feb 18, 2013, 11:03 AM
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United States, FL, Orlando
Joined Mar 2011
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I used some 2" strips of yellow and black Zagi tape from Graves to make stripes on the bottom of mine. No more orientation issues and its completely removable. plus the tape gives a little extra strength and abrasion resistance.
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Old Feb 19, 2013, 02:45 PM
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Iceland, Westfjords, safjrur
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Rainy day here, so I put together my PNP Scimitar today.

Should I bother with the stock prop or upgrade to an APC?

Also, I downloaded the DX8 setup from the Spektrum community website. Everything works perfect, but, I am wondering about elevon movement when applying rudder. If I use full right rudder, I notice the right elevon moves down. Left rudder=left elevon down. Is this differential?
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Old Feb 19, 2013, 02:52 PM
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Canada
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Quote:
Originally Posted by wavekatcher View Post
Rainy day here, so I put together my PNP Scimitar today.

Should I bother with the stock prop or upgrade to an APC?

Also, I downloaded the DX8 setup from the Spektrum community website. Everything works perfect, but, I am wondering about elevon movement when applying rudder. If I use full right rudder, I notice the right elevon moves down. Left rudder=left elevon down. Is this differential?
Nothing wrong with the stock prop. Use it. If your runway is gravel or grass, it'll get chewed up quick enough. Then you can try another prop.
I didn't like the rudder to elevon mix. I took it out. You should try it to see if you like it.
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Old Feb 19, 2013, 02:53 PM
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Orlando, Fl
Joined Jan 2008
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Quote:
Originally Posted by wavekatcher View Post
Rainy day here, so I put together my PNP Scimitar today.

Should I bother with the stock prop or upgrade to an APC?

Also, I downloaded the DX8 setup from the Spektrum community website. Everything works perfect, but, I am wondering about elevon movement when applying rudder. If I use full right rudder, I notice the right elevon moves down. Left rudder=left elevon down. Is this differential?
It's a mix to help during knife edge.
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Old Feb 19, 2013, 04:02 PM
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United States, TX, Fort Worth
Joined Jun 2000
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Quote:
Originally Posted by voxel View Post
I bought 2, totaled one when I lost orientation. It was circling sweet and calmly for a few minutes. After trimming I decided to do a loop and it rolled to one side (can't remember -top and bottom are a mix of red, black, and white). I ended inverted, panicked, pulled another loop and yet again it rolled so I panicked again and nosed into the ground.

Anybody mod it to help with orientation? Maybe paint the underside completely black?
Not having any disorientation issues at all...the model is mostly red on top and mostly black and white on the bottom. Plenty of differentiation for me.
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Old Feb 19, 2013, 10:06 PM
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Yuma, AZ
Joined Oct 2003
350 Posts
Alternate props

I have read through many pages of this thread and can't find any comments on what prop, other than the stock one, works best on a stock motor and esc. Can anyone help? Looking for an apc substitute for the stock prop. My Scimitar is not yet hear yet, but I'm getting ready. Thanks.
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Old Feb 19, 2013, 10:14 PM
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Canada
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I've switched to these lately. Seems to work fine and they are much cheaper and easier to get than the stock prop.
http://www.hobbyking.com/hobbyking/s...idProduct=5365
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Old Feb 19, 2013, 10:58 PM
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Now that looks sick!
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