CooYoo Quantum Titanium, few pics and test

Budda

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I also had the same issue, and I solved It keeping the head more loosened. Now each time before wearing it, I untwist it and press the head against the body with my thumb, to check if a strong pressure could still make contact and discharge the light.
The bigger o-ring is a solution. Keep in mind that a bigger oring means bigger work on the small threads of the light.
I'll recommend a not too big oring, expecially on the soft titanium models like mines.
 
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Jay R

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Picked mine o rings up on e'bay. Bag of 10 for not much money. 4.5 x 1mm I got. They take a bit of stretching to get on but once there, work well. You could also get some 5mm on the same order just in case.
I also use motorcycle chain lube on the threads as it is really thick and results in a nice smooth turn with resistance.
 

magellan

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My Brass CooYoo just arrived today and sadly it doesn't work :( I've tried multiple charged 10180 batteries and nothing gets even the faintest output. The usb charger led comes on when I plug the body in but that's the only sign of life in it.
I don't suppose anyone has any ideas on things to try to bring it to life?

Time to find out what GearBest's customer service is like!

That sucks. I don't know if this will help, but one time a small light I just bought, don't recall the exact model at this point, but I remember it was a twisty type like the CooYoo. Anyway, I tried 3 different batteries and it was dead. So I gave it a little rap against a wooden cutting board and presto, it came on. This has happened to me at least once before with a twisty. Don't know what causes this, all I can say is that sometimes twisty's are a little finicky, but anyway, giving it that little rap worked.
 

Jay R

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Magellan. You should have read 2 posts down. His problem was fixed. He hadn't taken out the battery isolator tag they put in for isolating the cell while shipping.
 

stephenk

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Received my SS version today. Much smaller than I was expecting (much shorter than my LED Lenser K2), and a nice neutral(ish) tint.
The only "issue" is that during the twist, there is a long period of flickering low mode light before it reaches a point where the light is constant. Is this normal? (I've not owned a twisty before).
 

Jay R

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Not normal. It may be that the contacts are a bit grubby. Give the ends of your cell a good rub against something to clean off any tarnish and try again.
 

BigJoeXXL

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Houston
Received my SS version today. Much smaller than I was expecting (much shorter than my LED Lenser K2), and a nice neutral(ish) tint.
The only "issue" is that during the twist, there is a long period of flickering low mode light before it reaches a point where the light is constant. Is this normal? (I've not owned a twisty before).
I receive mine just the other day and having the exact same issue with the twist flickering.
 

Luter

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This is identical to "Black Water Kite" and they do it also in aluminium.
DSC_0001.jpg DSC_0002.jpg DSC_0004.jpg
this aluminium one cost £12 shipped.
 

Jay R

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Does it flicker from off to low or from low to high. ie: does it get brighter when flickering or darker ?

Oh, and did you also clean the contacts above the charge port? The brass 'nub'.

Last off, I found on one of mine that some bits were caught in the head under the flexible hi/low plate. A blast of air cleaned that out.
 
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stephenk

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Does it flicker from off to low or from low to high. ie: does it get brighter when flickering or darker ?

Oh, and did you also clean the contacts above the charge port? The brass 'nub'.

Last off, I found on one of mine that some bits were caught in the head under the flexible hi/low plate. A blast of air cleaned that out.

Thanks for the advice. I cleaned all the contacts. However, I haven't tried the blast of air trick . I'll try that one now...
 

maukka

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The Blackwater Kite rebranded one arrived today in stainless steel. What an amazing output for the size. Here's a spectral plot.

h4cynrB.png


Couple more for comparison.

http://imgur.com/a/Fe5Jh
 
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ven

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Congrats maukka , mine is always with me !


No pic was not taken whilst driving !! Sat in car on a car park....

I thought the tint would be around 5500k at a guess and not far out, really like it for a cool.
 

jorn

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That looks like a lot of weight hanging on the ingnition. Iknow lots of pepole that have destroyed the ignition switch because they had too mutch stuff (weight) hangin. Not a cheap repair.

Got one cooyou in blued ti. liked it so mutch that i had to order one in copper too :) No pwm on this tiny bugger. Have drop tested mine, hozed down in the shower, and drop tested it into a bucket of water. Seems drop and waterproof. It kicked my tain p0 off the keychain.
 

ven

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:laughing: its not as bad as it looks and thats thinned down !

I have a ti as well but not used yet.........Like the ss for the extra bit of durability on key chains(not that ti is bad, just ss seems more forgiving)
 

jorn

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My second one arrived today. The finish on the copper looked awful. Head and tailcap looked kind of ok, but the tube looked bad and matte. After 3 minutes with a dremel and some metal polish, it's a gem :)
IMG_0383_zpshbfuvc6m.jpg
 
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