|Mar 19, 2012, 03:59 PM|
Actually, while there are many "brands" of the 2212-6, the majority of them are made by Suppo Motors with just the company name of the reseller plastered on them. I was going to make labels for my motors, but I figured it was a waste of time really.
"BP" is BP Hobbies. And even the Grayson has roots to the Suppo. Other places that sell these are my shop (Nico Hobbies), RC Hot Deals, LiteFlightRC, Model Aero, etc.
|Mar 20, 2012, 02:03 PM|
|Mar 25, 2012, 01:57 AM|
need for speed
Hello Raptor fans,
Back again. It's saturday now and I hope to fly at sunday. So, there's some work to do!
The motor is mounted, now I want some other changes to be made. First I want to change the thrustvectoring. I think it works on low speeds, but I think it obstructs the airflow on higher speeds.
Second change is creating a batterybay to bring the center of the weight of the battery in the centre line of the plane. I believe it's better for the flight characteristics of the plane. and this battery is realy heavy.
Grayson Hobbies Super Mega Jet V2 Motor (76 gram)
Turnigy ESC Plush 40A (33gram)
Turnigy nanotech 2200mah 3S 45C~90C battery (201 gram)
Total 310 gram
Turnigy SK3 Fandrive 3516-3300KV (111 gram)
Turnigy ESC Plush 60A (60 gram)
Turnigy nanotech 3300mah 4S 65C~130C battery (409 gram)
Total 580 gram
an increase of 270 gram
I also changed the form of the propslot for noisereduction.
The outside of the battery bay will be changed to improve the airflow and the plane will be painted again, but first I want to fly it.
Bye for now!
ImagesView all Images in thread
|Mar 25, 2012, 07:07 AM|
Hello you Raptor Fans,
Today i fried my SK3 fandrive 3516-3300kv motor.
First I tested the motor with a 6X5,5 prop, but that consumed far to much power. APC 6,5x5 Pylon was to big too.
6x4 was working fine. 850 Watts at full throttle is just perfect. So I started the first flight which soon ended as the last flight.
I flew a few circles at low speed to trim a bit up and the ailerons a bit to the right. After about a minute and a half I speeded things up. It was much faster than the Grayson I was used to, but by far not as fast as I hoped for. And then ......... a short white stripe in the air (looked very funny) and the motor stopped. I knew what happened. Grrrrrrr
Sailing back to the field was the only alternative. That went very well although the Raptor is rather heavy.
The motor was hot and it smelled as it was burned. Trying to get it back to life and giving it some throttle it instantly started to smoke. darn ....
So that was my experiment with this beautiful motor. It isn't ment to be used with a prop, I think. 901Racer ... you were right ...
|Mar 25, 2012, 07:47 AM|
Sorry to hear about your motor. I have been thinking about getting a Grayson Monster Jet to try with some of my parkjets. They seem to put out some good power and speed.
|Mar 25, 2012, 01:08 PM|
Destroyed the motor myself!
Found out what realy happened. I destroyed the motor myself. grrrrrrrr.
How it all started.
On the internet I found someone who flew this motor with a 6x5 propeller. I thought that was I good starting point to test some props. I didn't have a 6x5 but I did have a 6x5,5 so I tried that with my wattsup meter. With gaining throttle it soon came far beyond 1000 watts so I switched the prop to 6x4.
Looking at my Wattsup meter I thought I saw 850 watt but now I think it must have been 1850 Watts. I went to the field with my Raptor and you know what happened there.
Looking back at youtube I found out that the funjet with the 6x5 prop was flying with a 3S battery grrrr. I use a 4S battery
Back home I wrote my experiences at rcgroups.com and left the Raptor for what it was in some dark corner of the house. Later on I started thinking that I must have done something wrong because I've never fried a motor that easy.
So, I mounted the second motor (I ordered two of them) and started measuring again.
Now I tried sevaral props, starting with a 5x5 and that went easily above the 1000 watts, so I tried several props smaller than 5x5 to get somerwhere below the 1000 watts.
I used 5x5 ; 4,75x5.5 ; 4,75x4,75 ; 4.75x4.5 ; 4.5x4.1 they all passed the 1000watts. The neighbours must have gone crazy because of the noise
The last one I tried was 4.2x2 and that was the first one to come beneath the 850 Watt. The WattsUp meter measured 605 Watts.
But I'm out of props now !!!
I think it will end somewere around 4.1x4.1 or 4.2x4.2 I'll have to order some more props to test and I will do that. I will order some props and let you know later.
anyhow .... 6x5 is much to big for this motor!!!
Gerrit (happy again).
|Mar 26, 2012, 01:00 AM|
Maidened my F 22 today and had a ball.
I have not been flying fixed wings for long and thought this would help me get used to aerobatic flight better than my clouds fly .
I wanted a slower flying , floatier plane to train with and this model is perfect .
It flew exactly as I thought it would and I was looping and rolling in no time.
Thanks tomhe and everyone else who has posted for an awesome model and all the info here to help build it .
I now have a new favorite plane (The Polaris is a close second)
|Mar 31, 2012, 06:33 AM|
Some new measurements
Before flying (it's cold and there is to much wind) I did some measuring with different props and batteries.
HobbyKings Specs of the motor:
Voltage: 3~4S Lipoly
Internal resistance: 0.019 Ohm
Max Loading: 55A
Max Power: 810W
Shaft Dia: 3.175mm
Motor Plug: 3.5mm Bullet Connector
Mounting Ring Diameter: 29mm
For 70mm EDF Units
I tested the following props and batteries:
4000 mah 3S 40C
1017Watt - 98 Amp
4000mah 3S 40C
841 Watt - 79 Amp (Watts OK ; Amps to high)
3850mah 4S 65C
964 Watt - 66 Amp (both a bit to high)
3850mah 4S 65 C
570 Watt - 37 Amp (both to low)
What's your advise?
should I go for 3S and APC 6x4
Should I go for 4S and APC 4.1x4.1
I wish I had an APC 4.6x3 but I can't buy it local
|Mar 31, 2012, 07:16 AM|
If you could heat-sink the motor, then I would go for the 4.1x4.1. Since it doesn't look like you can do that, I would recommend ordering a couple of other props (sizes and brands) until you find the right one.
|Mar 31, 2012, 07:47 AM|
|Mar 31, 2012, 08:01 AM|
|Apr 02, 2012, 01:08 AM|
It finaly flies with the Turnigy SK3 3516-3300KV
Last sunday, first of april, the Raptor flew with a complete test setup including my EagleTree system to check out the flightdata later.
Everything went OK and the Raptor is a real screamer now.
I tested two different setups with the Turnigy Fandrive SK3 3516-3300KV
1. Turnigy 3S 4000mah 40C - APC 6x4
2. Turnigy 4S 3850mah 65C - APC 4.1x4.1
The wind was strong towards the camera.
EagleTree Charts included in the YouTube clip.
|Apr 02, 2012, 07:21 AM|
Joined Oct 2011
|Apr 02, 2012, 10:15 AM|
Thanks for your reaction. I like the testresults and I like the way the Raptor is flying. It's NEVER fast enough. There's always the challenge to go faster.
I don't have equipment to measure the speed of the plane and I wonder what you mean by "getting a doppler reading from the video". Can you explain?
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