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Posted by fly_boy99 | Nov 14, 2007 @ 01:08 PM | 5,471 Views
Here are some recent pics
Posted by fly_boy99 | Oct 14, 2007 @ 08:56 PM | 5,224 Views
Well it looks like lipo size matters as these runs are made with 1320 cells.


Posted by fly_boy99 | Aug 04, 2007 @ 04:33 PM | 4,539 Views
I ran the noload test on my micrologger and got a Kv of 3600 which is
very close to the 3750Kv which is stated for the motor. I did this test
with a lipo which had a resting voltage of 11.4 which was handy.

39292/10.9 = 3604Kv

So now I can count upon my micrologger to tell the whole truth.

B
Posted by fly_boy99 | Aug 04, 2007 @ 02:48 PM | 4,389 Views
New motor
Posted by fly_boy99 | Aug 03, 2007 @ 06:27 PM | 4,393 Views
Well after I got my Micrologger speed sensor I just have to know how fast my
ships are. I took out the Funjet with a 3S and 5x5 prop and got her up to
90mph which isn't bad.

Real fun day....

B
Posted by fly_boy99 | Jul 22, 2007 @ 02:09 AM | 4,383 Views
Fun stuff....
Posted by fly_boy99 | Jul 04, 2007 @ 04:27 PM | 4,860 Views
Well I finally got the ole LRK winding arm to work properly and now I might
have a motor that is too hot. This one might fly really well with a 5.5x4.5
prop on 3S though so we'll have to see about this one.

How's 3300Kv strike ya at 600W.

So I don't forget it's LRK wound with 3W22G 7T terminated Delta.


Enjoy...
Sticky: 4T-Delta
Posted by fly_boy99 | May 05, 2007 @ 07:32 PM | 4,600 Views
It looks like a 2200Kv motor with both 3S tests and 4S tests.


3S
----

25252/11.48 = 2140Kv


4S
----

31847/14.88 = 2140Kv

B
Posted by fly_boy99 | May 04, 2007 @ 12:58 PM | 4,761 Views
I've been getting into EDF's lately and decided to try out some fans from UH because 1) they were fairly inexpensive 2) I have some homebuilt motors & others I would like to try out in them.

I'm thinking of getting a Sport Jet and using one of the fans with a 2w-20 motor for some real fun!!!

B

p.s. Got another on the way!!!!

SPECS:
======

EDF Ducted Fan Unit 5Blade 2.68inch 68mm OR003-00105-5B

EDF Ducted Fan Unit 7 Blade 3inch 83mm OR003-00109-7B

EDF Ducted Fan Unit 5 Blade 3.5inch 92mm OR003-00106-5B

EDF Ducted Fan Unit 7 Blade 3.5inch 96mm OR003-00110-7B

EDF Ducted Fan Unit 7Blade 2inch 51mm OR003-00107-7B
Posted by fly_boy99 | Apr 09, 2007 @ 09:05 PM | 4,047 Views
I took 3 ESC's: Scorpion 35A ESC, Cool Runnings 25A ESC, and a CC60 ESC.

All point to the same conclusion. The first peak was the Scorpion, the next two are the Cool Runnings and the last is the CC60.


B

p.s. Added 6x4 test chart.
Posted by fly_boy99 | Apr 01, 2007 @ 07:56 PM | 3,741 Views
Some stats on a recent motor.


B
Sticky: c/f Motor
Posted by fly_boy99 | Feb 27, 2007 @ 04:14 PM | 3,654 Views
Well c/f contacted me awhile ago and I told him that at some point I'd build him a motor. The 100mph thread prompted me to play with this one.

I can say that with the 4.1x4.1 prop and 114mph pitch speed for 25A draw is pretty darn good. I did try with the 4.75x4.75 and it was clipping on the high end so this one will need field testing next to see what she does in the air unloaded. It pulled 36A on the 4.75x4.75 and it was right on its constant rating.

I have posted all three graphs:

Kv Graph
4.1x4.1 Graph
4.75x4.75 Graph
4.1x4.1 4S Graph

One other item of interest is to run this on 4S with the 4.1x4.1 and see what she can do. *edit* Added graph... 124mph pitch speed on 4S doing 32A without going WOT. This one was a little below 3/4 throttle and was putting out 500W, she must be dumping heat like no tomorrow!!! That's about 65% efficiency and getting worse as you push it.

B
Posted by fly_boy99 | Feb 22, 2007 @ 07:35 PM | 3,515 Views
Paul asked me to build him a motor that would stay below 40A and get some good speed but have enough thrust to back up the might 36" Demon.

I'm happy to say I've met the task and hopefully we will have a powerplant that will drive the Demon to over 120mph while carrying verticle lines very nice.

The motor comes in at 3000Kv on a K283 Double stator setup with 9T of 22g and teminated Delta. The motor also runs with 6 magnet poles.

I made three runs with good speed props. Namely the:
4.75x4.75
4.75x5.5
5.25x6.25

Astonishingly the motor with the bench testing on Kv determination and the following prop tests net the motor temp no more than 85 degree F. I was quite surprised at this and I am very happy with the results. Looks like one can go hotter and squeeze out a bit more performance.

EDIT: This motor actually didn't work out for a couple of reasons but the main one is that the motor did not provide enough thrust to give the performance you need out of this wing. This motor could work for very sleek airframes and be below 20oz AUW. I am pursuing the 3014 motor from Scorpion to provide the grunt we need.



Enjoy!
Bryan

p.s. All tests were done on a 3S pack. If we went to a 4S pack we would get even better power/performance!!!
Posted by fly_boy99 | Jan 12, 2007 @ 04:32 PM | 3,822 Views
Well here's one of my first LRK winds I've attempted.

It's a 3520-6.936

That's 12T of 2W 23G wound LRK and terminated Delta.
Posted by fly_boy99 | Nov 01, 2006 @ 02:24 AM | 3,889 Views
I'm a bit dissapointed that I found this damage to the nose as this is the weakest spot on the plane.

NOTE TO SELF: ALWAYS INSIST TO TAKE APART THE MODEL YOURSELF!!!!
Posted by fly_boy99 | May 31, 2006 @ 01:02 AM | 4,310 Views
I don't know about buying things online at RCG anymore.

I have these pics which show a deal I just recently finished. Upon opening the box I found one thing to be odd. The capacitors were not flush with one another as most CC controllers are, especially the 35A and up ones. Funny thing is that there is a blue pen mark on the side where the cap is off the board.

I have pics to show one of the legs of the capacitor is completely off the PCB board alltogether. It was stated as:

"Used, updated, fully operable Castle Phoenix 35"

Now the last thing you need in a setup that can draw up to 35A which would be of some good size is voltage spikes and interference flying around inside your fuse.

Update: Ron came through and provided funds to send it back to CC for repair!!! My belief in buying things on RCG is restored!!! Thanks Ron!
Posted by fly_boy99 | Mar 02, 2006 @ 11:50 PM | 4,776 Views
Latest graphs for the Scorpion ESC test: