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Old Jan 14, 2013, 02:45 AM
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Shelby Twp, MI
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Yes the flight time is hardly changed, for example if your motor draws an average if 1.5 Amps, then a 160 mAh battery is good for 6.40 minutes. If you add 3 LEDs, each drawing 10 mA, then the flight time will be 6.28 minutes, a loss of 7.2 seconds.
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Old Jan 14, 2013, 11:00 AM
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Petefoss's Avatar
Oxford, Michigan, United States
Joined Aug 1999
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A friend of mine wrote a simple excell spreadsheet for doing LED/resistor calculations.

http://www.pgoelz.com/skymasters/LED...lator%20v2.xls
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Old Jan 14, 2013, 04:58 PM
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Looks good, I will have to study it a while...thanks.
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Old Jan 14, 2013, 11:13 PM
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United States, CO, Colorado Springs
Joined Jan 2008
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Tiny shrink wrap

Quote:
Originally Posted by alset View Post
The shrink tube that comes with the Parkzone pushrod/end-pieces is smaller than the smallest shrink tube an electronics parts store carries. So where can one get this very small shrink tube?
This discussion came up a month ago - I now carry the 1/32" (.8mm) (ID) shrink tube on my site:

http://www.rc-connectors.com/index.p...index&cPath=83

It's right at the top. I now also carry everything from 3/64" up to 1/2" in Red, Black, and White.

Thanks,

Glenn
RC-Connectors.com

PS - .8mm ID - shrink rate not specified, but appears to be less than 2:1. It's impossible for me to measure that small, but using well-know parts I have I found this: It will cinch down on .023" wire but slides free on .019" wire. And by wire, I mean machined Mill-Max headers and pins that I use for the 2mm pitch connectors on my site.
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Last edited by glenn2626; Jan 15, 2013 at 12:08 AM. Reason: answering NemoSkull's question, below
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Old Jan 14, 2013, 11:20 PM
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glenn, is this .8mm ID or OD? and what is the shrink rate, 2:1 or 3:1?
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Old Jan 14, 2013, 11:56 PM
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Quote:
Originally Posted by nemoskull View Post
glenn, is this .8mm ID or OD? and what is the shrink rate, 2:1 or 3:1?
That's ID, and while not specified, one test just now shows it's less than 2:1. Edited my post above to reflect this. It gets *really* tiny down there at that size. There is marking on the wrap but even with my magnifying glass I can't read it, I'll have to try again with different light.
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Last edited by glenn2626; Jan 15, 2013 at 12:08 AM.
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Old Jan 15, 2013, 01:31 AM
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United States, CA, Corona
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Here's a video of my friends Guillows piper super cub 95 he put an old 6400 in. In the video he talks about the specifics.

Guillows RC Piper Super Cub 95 (3 min 17 sec)
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Old Jan 15, 2013, 03:20 AM
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here is another on the go...
I worked on the dimensions for the IFO and Bug..combining shapes...reduced in size to get just over 1sqft area, and went with a CFrod kite build to see what weight I could get it down to...
This first build uses 1mm, 1.5mm and 2mm CF rods, and has come out much more rigid than expected..
The covering material is the xmas wrap which is 40um and 22gms/Msq, it adds about 3gms total with glue
The depron parts are to make fitting the gear easier and are 3mm thick...by adding a vertical depron shaped fuz and rudder you can make it into a near BUG copy
I am using a CF wing build as it will bounce a lot better than depron on its own..
UHU por and CA is used for the build..

So all the bits as seen add up to 14gms..And the final AUW weight is likely to be up near 30-35gms which will fly ok
This first build should be fine for a 2cell setup, its more than strong enough,
but I think itcould be enlarges for more area and a lower wing loading
However I am already thinking of doing it again, this time reducing all the bigger rods down by one size and using a much lighter film covering..(when I can find one)

Has anyone used the film from those cheap carrier bags... 12micron or 18micron bags are sold in 100's and 1000's..
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Old Jan 15, 2013, 04:04 AM
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UK, Bedworth
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Nice one Dave looking forward to hearing how it goes

Terry
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Old Jan 15, 2013, 08:53 AM
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I need to work on a method to make the rec blocks easily swappable.. my few are all in models that are flying... until these get killed, which may take a while, I am stuck with building experiments only..
These micro kites should go as well as any other simple kite designs.. or IFO's which all go well..
The smallest of my bigger kites are almost suited for indoors,in a small site, but just not quite, so smaller , lighter versions should be spot on
The weight of this one is a lot less than my previous depron and foil builds so my previous marginal power setup should not be a problem.. mind you the heavier builds are flying well, they just lack power and duration on the way I set them up.. thats why I am also looking at what are the best motor setups...

So far the consensus is that either the geared brushed setup...or the 2 cell micro brushless setups are giving the best power and performance... for lower power, again geared setups win.. with much longer flight times..
going brushed with a gearbox feels like a step back, but you cant argue with results..My Vapor goes on for ever on a 160 lipo..
It was my Vapor that reminded me of the CF kites.. All CF and foil with a great long time easy flight performance...My Vapor is now an Xmas model after I wrecked the foil it had on its wings.. The Xmas foil makes it stand out from the many others flying, and although its a thicker foil it has not made a bit of difference to the super way it flys
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Old Jan 15, 2013, 09:34 AM
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Shelby Twp, MI
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Not exactly in-line with this forum, but what about cheap "Orange" Rx's? there are cheap 1.9 g servos too...
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Old Jan 15, 2013, 09:44 AM
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United States, CA, SF
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I use both with great success! Buy a few back up 1.9 gram servos, just in case one stops working properly.

Free
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Old Jan 15, 2013, 12:18 PM
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Gulf Breeze, FL
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Quote:
Originally Posted by dbacon View Post
Not exactly in-line with this forum, but what about cheap "Orange" Rx's? there are cheap 1.9 g servos too...
The Orange R-415 receivers are excellent, as are these 1.7g servos which will plug directly into this receiver.

The servos are so good that they are generally out of stock, however.

Gene K
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Old Jan 15, 2013, 12:35 PM
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The 1.9 gram servos plug directly into the receiver also, but if you are going for light weight, go with the 1.7s.

Free
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Old Jan 15, 2013, 01:28 PM
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Shelby Twp, MI
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Here is a bunch:
I don't know why there are two 5320's, and I wonder if we can get the 1.25gram one it sounds the best!
HK-5330 Ultra-Micro Digital Servo
Weight (g) 1.9
Torque (kg) 0.17
Speed (Sec/60deg) 0.04
A(mm) 23 Overall Height
B(mm) 13 Body length
C(mm) 20 Height below arm
D(mm) 6 Width
E(mm) 20 Overall length
F(mm) 14 Height below ears
JST 1.25mm
$3.73

HK-5320 Ultra-Micro Digital Servo
WHITE
Weight (g) 1.7
Torque (kg) 0.07
Speed (Sec/60deg) 0.05
A(mm) 18
B(mm) 14
C(mm) 16
D(mm) 6.2
E(mm) 20
F(mm) 10
JST 1.25mm
http://www.hobbyking.com/hobbyking/s...dproduct=17540
$3.55

HK-5320 Ultra-Micro Digital Servo
ORANGE
http://www.hobbyking.com/hobbyking/s...dproduct=28406
Weight (g) 1.7
Torque (kg) 0.07
Speed (Sec/60deg) 0.05
A(mm) 18
B(mm) 14
C(mm) 16
D(mm) 6.2
E(mm) 20
F(mm) 10
JST 1.25mm
$4.04

Corona 919MG Metal Gear DS919MG
Weight (g) 1.25 This turned out to be wrong it is 12.5g
Torque (kg) 1.7
Speed (Sec/60deg) 0.06
A(mm) 31
B(mm) 23
C(mm) 29
D(mm) 12
E(mm) 32
F(mm) 20
Plug unknown
$6.19
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Last edited by dbacon; Jan 15, 2013 at 04:49 PM.
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