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Old Aug 20, 2012, 02:21 AM
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Originally Posted by balsa or carbon View Post
That's frustrating ! Do you have any airframes built ?
Not yet... painted a bunch of foam over the weekend. The rest will go fast once the parts get here.

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Old Aug 20, 2012, 02:14 PM
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United States, GA, Grayson
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Think one of the "blue wonder" type of motors would work on this plane?

http://www.hobbyking.com/hobbyking/s...idProduct=8617 1300kv
http://www.hobbyking.com/hobbyking/s...idProduct=8618 1500kv
http://www.hobbyking.com/hobbyking/s...idProduct=8619 1700kv
http://www.hobbyking.com/hobbyking/s...idProduct=8620 3000kv
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Old Aug 20, 2012, 04:14 PM
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I think you would want to build a standard sized Super Easy as light as possible, if you wanted to use these motors as they are all well under 100 Watts input power. The 1500 Kv one has max current spec of 8 Amps with a 3S battery, and the thrusts seem awfully optimistic.

If you take the paper off Dollar Tree foam and use as little reinforcement as possible, I think you might be able to do it.

Look at Nightstone's tape covered, no paper, version earlier on.
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Old Aug 20, 2012, 07:23 PM
Hot glue held together by foam
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Originally Posted by tripleup05 View Post
Slim1357 made one with the 3000kv Blue Wonder - it does VTO's !
http://www.rcgroups.com/forums/showt...7#post22377737
http://www.rcgroups.com/forums/showt...4#post22381464
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Old Aug 20, 2012, 09:16 PM
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Thanks for the reminder Al

Looks like Slim took the paper off the foam board to save weight. He also took a chance using a 3S battery. The Hobby King Specs say 2S only. Using the small prop must have kept the motor from toasting.

Joe
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Old Aug 20, 2012, 11:22 PM
Hot glue held together by foam
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Originally Posted by DuPageJoe View Post
Thanks for the reminder Al

Looks like Slim took the paper off the foam board to save weight. He also took a chance using a 3S battery. The Hobby King Specs say 2S only. Using the small prop must have kept the motor from toasting.

Joe
Yeah , I noticed that about the 2S in the specs !
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Old Aug 21, 2012, 12:54 AM
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Originally Posted by tripleup05 View Post
I put this on my original. 730g of thrust on a 7x6 prop. It was way overkill with the paper off.

http://www.hobbyking.com/hobbyking/s...idProduct=5423

I have this motor on the Diamond SE with elevons. Goes vert with no issues on a 6x3 3s.

http://www.hobbyking.com/hobbyking/s...cro_Motor.html

These are both very cheap motors and perform really well. I liked the quality of the Emax so much I picked up a 28-05 and a 28-22.

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Old Aug 21, 2012, 01:24 AM
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Got my motors/esc's in Al. Did the soldering tonight. Got consulting over the next few days so may be the weekend before I can build again. Its coming...

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Old Aug 21, 2012, 01:15 PM
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Got my motors/esc's in Al. Did the soldering tonight. Got consulting over the next few days so may be the weekend before I can build again. Its coming...

Nightstone
Awesome ! So you're going for more speed on the next build , right ? If you're curious about the speeds you're getting , there are cell phone apps that listen to the sound of your jet going by and calculate the speed from the doppler effect . There's also a device that you can put on the plane that uses GPS to give you a readout of your top speed .http://www.velocity-rc.com/cgi-bin/v...59&cid=3&idx=1
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Old Aug 21, 2012, 10:14 PM
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Originally Posted by DuPageJoe View Post
Thanks for the reminder Al

Looks like Slim took the paper off the foam board to save weight. He also took a chance using a 3S battery. The Hobby King Specs say 2S only. Using the small prop must have kept the motor from toasting.

Joe
I used packing tape to laminate the foam after peeling the paper off. Gives it a lot more resiliency IMO. The 3000 kv motor is fun but is a trade off between flight time and raw power. I have a 5x5 prop on it now and I get like 2-3 minutes tops on a 450 mah 3s. I get about 5 with an 800 mah 2s but it can't VTO.
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Old Aug 22, 2012, 02:16 AM
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I used packing tape to laminate the foam after peeling the paper off. Gives it a lot more resiliency IMO. The 3000 kv motor is fun but is a trade off between flight time and raw power. I have a 5x5 prop on it now and I get like 2-3 minutes tops on a 450 mah 3s. I get about 5 with an 800 mah 2s but it can't VTO.
I just got that motor. Can it handle a 3s? Some folks were reporting burning the motors up because of the fine wire.

I'm just now realizing that the higher amperage draw will deplete batteries faster. Most of my current motors are 15a and below. Now I have 2 that will run in the 20's but suck my batteries dry in an instant. I may have to order a few bigger batteries.

Im really liking this motor so far. Seems like the best of both worlds. Cheap too.

http://www.hobbyking.com/hobbyking/s...idProduct=5428

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Old Aug 22, 2012, 02:19 AM
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Originally Posted by balsa or carbon View Post
Awesome ! So you're going for more speed on the next build , right ? If you're curious about the speeds you're getting , there are cell phone apps that listen to the sound of your jet going by and calculate the speed from the doppler effect . There's also a device that you can put on the plane that uses GPS to give you a readout of your top speed .http://www.velocity-rc.com/cgi-bin/v...59&cid=3&idx=1
Speed on the next build. Will more than likely have short flight times due to the amp draw. I'm going to go with another 3/4 size model. I have 2 smaller 3k kv motors now.

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Old Aug 22, 2012, 08:00 AM
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Originally Posted by DuPageJoe View Post
Thanks for the reminder Al

Looks like Slim took the paper off the foam board to save weight. He also took a chance using a 3S battery. The Hobby King Specs say 2S only. Using the small prop must have kept the motor from toasting.

Joe
Over on the Adrenaline Rush thread (http://www.rcgroups.com/forums/showthread.php?t=380270) we run the 3000kv version on our little hotliners. Most use a 4.75x4.75 prop with a 800mah 3S 40C. It makes for a killer combination! It draws around 20amps, and other than crash damage, I haven't read about a single motor failing. Not that it hasn't (or couldn't) happen, but I haven't read any complaints, and many of us are running that setup. I'm not sure why Hobby King specs it so low, but it can take some abuse!
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Old Aug 22, 2012, 12:23 PM
Hot glue held together by foam
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Originally Posted by Nightstone View Post
Speed on the next build. Will more than likely have short flight times due to the amp draw. I'm going to go with another 3/4 size model. I have 2 smaller 3k kv motors now.

Nightstone
Yeah , that's the trade-off for the need for speed - shorter flight times . But what an exciting 3-4 minutes , especially when you can hear people watching go "WHOAA!!!"
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Old Aug 22, 2012, 04:23 PM
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Built a quick f-22 a day or so back and test flew it this morning ( 3 flights ). I was dissapointed. After flying that Diamond shaped SE I guess im spoiled now. The F-22 was less maneuverable, Took alot more throttle to fly with the same motor, Could not fly as slow. Felt more like I was pushing a chunk of foam around versus flying a plane. It sure looks nice and seems real popular but I don't think its a keeper. Just not my flying style.

That KFm wing really makes a difference. Now I think I know where my next design is going to go as far as the SE goes...

Plane number 3 is on the Way lol.

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