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Author Topic: TNT with Night Lights  (Read 2502 times)
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lasapcheong
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« on: April 02, 2012, 06:01 AM »

Hi,

Saw a previous post of a Deepspace with Night Lights. Something similar here. A friend of mine is currently experimenting with some DIY night lights for stunt kites. Here's a quick video with a TNT.

TnT in the dark


Enjoy Smiley
-Darryl
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Krijn
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« Reply #1 on: April 02, 2012, 06:06 AM »

I think I saw a Tazmachine...  Wink

Nice
But you can see the unbalance in the kite during the tricks
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lasapcheong
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« Reply #2 on: April 02, 2012, 06:09 AM »


Last I heard from him, the kit itself weights a whopping 16grams. Kite in the video is a TNT UL. I think the default tail weight may have been removed for compensation but still yeah, it should be heavy under those inland conditions.

-Darryl
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tpatter
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« Reply #3 on: April 02, 2012, 09:31 AM »

Neat - I will have to figure out how to do this for festival night flys this summer.

I'd love to see a fast in-place or rising comete with these on. 

Tom
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obijuankenobe
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« Reply #4 on: April 03, 2012, 01:34 AM »

I dabble in flashlight technology, LED light engines and such. 

It seems that everyone makes the same mistake in choosing too big of a battery.  Even a CR123 battery is too heavy.  If I was going to rig this up, I would at least step down to a AAA sized 10440, or even the smaller CR2 size (10180?).  Granted this is a run time of minutes, but if you are doing this, you have start with the idea of keeping the flight characteristics intact.  That necessitates working within the range and distribution of weight already present in the kite.

Still, the latest couple protos showing up are great starts.

Give me till the summer.  As soon as I am back in the Netherlands, I am going to give this a college try with some ideas I have stewing.

obi
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misterbleepy
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« Reply #5 on: April 04, 2012, 01:07 AM »

The main problem I have had with weight so far is actually finding out how much some of these parts weigh before buying them. Do you know how much a AAA sized 10440 battery weighs? I'd be interested to know, as lighter would be better. My CR123 rechargeable battery weighs 17g (and then there's the little battery holder, velcro strap, wires etc) and replaces the standard Deep Space 15g tailweight. One aspect of my rig is that there is no additional circuitry between the battery and LED's - luckily that doesn't seem to be a problem - the battery has enough volts to make the LED's light up nice & bright.

16g for this rig is pretty damn light - any news on what battery is used?
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lasapcheong
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« Reply #6 on: April 04, 2012, 01:48 AM »

16g for this rig is pretty damn light - any news on what battery is used?


A CR2023 was used from what I gather



-Darryl
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« Reply #7 on: April 10, 2012, 04:02 AM »

Great !
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mikenchico
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« Reply #8 on: April 11, 2012, 02:29 PM »

How about one of these?



3.7v - 380mAh - 8 grams - 48mm x 30 mm x 3 mm - and you could use self adhesive velcro like a Skyburner tail wieght and put it right in the spine flap. Rechargeable and available with the charging protection board if wanted. They have lots of other sizes available (click the picture), say one at 13 grams for 680mAh - 39mm x 29mm x 6mm. I'm guessing that would run 2 LED's for around 20 minutes? I'm not an electrician, maybe somebody is? The small LED's we would be looking at have a maximum 20mA continuous current rating at 3 - 3.5 volts
« Last Edit: April 11, 2012, 02:35 PM by mikenchico » Logged

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jecko
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« Reply #9 on: April 11, 2012, 05:29 PM »

I've personally have seen the light set-up for this one (TNT). He told me it could last more than an hour, maybe two hours top.
As you probably notice, the lights are concentrated on two points on the sails. He currently trying to find LED could illuminate the whole kite instead.

the set up.
two LED light are attached to separate stand off connectors.
the rig are made as such it could be snap-on to the spine or lower spreaders(TNT only)

 Wink
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DD
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« Reply #10 on: April 11, 2012, 06:30 PM »

I always look at these and think of how cool they would be to fly on the beach at night but I worry about the random dufus walking down the beach between me and the kite and me not see them
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mikenchico
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« Reply #11 on: April 12, 2012, 01:01 PM »

... As you probably notice, the lights are concentrated on two points on the sails. He currently trying to find LED could illuminate the whole kite instead...


You're or He needs to be looking for "Straw Hat" LED's the standard rounded LED's focus the light into a small point, A Straw Hat LED actually has a concave lens which spreads the light, some as wide as 160 degrees. That should light the whole sail with two.

There are Straw Hat LED's out there with the rounded lenses also since the term has come to refer to any LED with a wide light dispersal. A quick Google will you headed in the right direction.

 
« Last Edit: April 12, 2012, 01:15 PM by mikenchico » Logged

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obijuankenobe
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« Reply #12 on: April 12, 2012, 02:40 PM »

an XPG (Cree) on a star would be a nice floody solution if you are already running 3.7v, right?

This is a great LED even at low currents.

Not sure if my flashlight guy has met my kiter yet, but they will meet in the summer.

Sent from a long time ago...in a galaxy far, far away.
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jecko
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« Reply #13 on: April 12, 2012, 05:16 PM »

Thank you, Mike and Obi..

Will google the LED the you guys mention and see if I get them here in Singapore. Smiley

If we manage to get them, will post pics of the finished prototype.

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misterbleepy
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« Reply #14 on: April 16, 2012, 02:41 AM »

How about one of these?



3.7v - 380mAh - 8 grams - 48mm x 30 mm x 3 mm - and you could use self adhesive velcro like a Skyburner tail wieght and put it right in the spine flap. Rechargeable and available with the charging protection board if wanted. They have lots of other sizes available (click the picture), say one at 13 grams for 680mAh - 39mm x 29mm x 6mm. I'm guessing that would run 2 LED's for around 20 minutes? I'm not an electrician, maybe somebody is? The small LED's we would be looking at have a maximum 20mA continuous current rating at 3 - 3.5 volts


I considered using one of those on my rig, but was worried about the pack bending and then failing - apparently LiPo batteries can catch fire/explode if they get damaged internally (through bending or being pierced). That's why I picked a battery in a hard metal cylinder with built-in protection circuitry - hopefully much more likely to survive my flying style without setting fire to my kite
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