Looking for a 21700 body that uses P60 size LED drop in

dano

Flashlight Enthusiast
Joined
Aug 11, 2000
Messages
3,884
Location
East Bay, Cali.
Hello, I've located a few 21700 bodies that use a P60, but from questionable sources. Are there good, high quality 21700 sized body that uses a P60 size LED drop in, taht arent from Alieexpress, etc?

TIA.
dan
 

orbital

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Joined
Feb 8, 2007
Messages
4,292
Location
WI
+

hey dano, you probably know this already, but I'll link it anyway..

 

yellow

Flashlight Enthusiast
Joined
Oct 31, 2002
Messages
4,634
Location
Baden.at
just if someone else finds this thread - in search for an 21700 host light
...
I have now gotten
1 * KDLitker host, like in chillinn`s link and
1 * Malkoff 21700 body, + suitable head + a l-m-h Malkoff insert.
...
short story: I should not - finally - have bitten the lure and got that Malkoff,
I was able not to be interested and declined the expense for years, and now am pissed that I finally felt for it,
and it was about what I feared all those years

--> anyone: get the KDLitker 21700 host
. (and the corresponding Kaidomain P60 insert)


(if someone wants to read the looong story regarding the Malkoff, please feel free to ask, I will type it then)
;-)
 

RWT1405

Flashlight Enthusiast
Joined
Dec 2, 2007
Messages
1,291
Location
PA
short story: I should not - finally - have bitten the lure and got that Malkoff,
I was able not to be interested and declined the expense for years, and now am pissed that I finally felt for it,
and it was about what I feared all those years

(if someone wants to read the looong story regarding the Malkoff, please feel free to ask, I will type it then)
;-)

Did you really think we wouldn't want to know?

ok, i'll bite...

same.
I love a good campfire tale.

Oh, I do need to hear this......
 

yellow

Flashlight Enthusiast
Joined
Oct 31, 2002
Messages
4,634
Location
Baden.at
oookay,
You asked for it ...
;)

in the early days of white led, we had to build our own lights - because there simply was no maker to give us good lights.
(then somewhen Fenix stomped the market with their L1P / L2P, wow that was great)

in 2004 I built my 1st 6P 18650 conversion.
Back then there was no stadard, like today, with bored out hosts and P60 inserts.
that is when I got my liking for that size and especially for the converted 6 P.
so I for sure have a bias towards that host and anyting will be compared to that!
Unfortunately the Malkoff body happend to fall for that also.

actually I am deciding to stay at 18650, or to switch to 21700.
the both hosts in question on the right:
2024 02 hosts.jpg


KDLITKER:
+ VERY CHEAP,
+ still impressingly nice machining, finish good,
+ watertight (when testing batteries, I put the light(s) into a bowl of water for cooling)
+ a tad shorter than the Malkoff,
+ good grippy knurling,
+ the Kdlitker 3-level insert kicks azz,
- adding the forward klicky was a PITA, i killed 1 of the 2-pack. But the 2nd works fine now
+ did I type cheap?

Malkoff:
* extremely expensive (which I knew before).
* only shipping method offered - here to Europe - adds another 50,-- to the total
* customs add another 80,-- €
* EXTREMELY Expensive
* machining is very good, finish is really nice,
* very slippery body (I learned that in the threads, but after ordering unfortunately)
* the superfine threading at the back cap - 9 full turns - drives me crazy. Why is that not the same as the threads inside the head for that insert fixing "screw"?
* at that back end not watertight (for the cooling water bowl).
I am disassembling/wiping/reassembling the whole light the last days, whenever another layer of fog builds up at the front glass,
* the recessed pushbutton is tooooo recessed, at least for me. (and I dont think I can adapt to how it is situated with more use. I simply have to open my hand to get the thumb deep enough into the recession. And I dont want to open my hand when holding a light)
* there could have been a few flat areas added at the end of the body as anti-roll "device". The end cap has them, but the body is wider at the end.
That for example were a nice hidden feature, I would appreciate from a high end product.
* that special insert + head... i again thought that does a special purpose. But inside the head is just a flat tube, and so head and insert are not pressed together, to improve thermal path (like the heads where the insert is loaded from the Front).
I added good 5 mm of aluminium tape around the insert, which is a PITA (again), to help getting the heat away. And know it does not work good, when sooo much space has to be covered.
To be totally clear: That "mounting" is something i accept from cheapo chinese but not from such highly recommended custom maker. That should have been mentionned from the fanboys, like the slippery knurling.
* the l-m-h, high CRI insert makes a fine high cri, but is way too dim. Even the non high cri version were to dim. No match for the really bright Kdlitker.

that is imho the 1st argument for the 21700: more power!
So higher power insert "needed"
:)
Yes, correct, the "dim" brightness, that was clear from bedinning, I know.
That was why I never opted for a Malkoff till now.
Makes it even worse for me, that I finally did it - it was simply MY wrong decision.
:(
the rest - watertightness, slippery body, bad thermal mounting/aluminium tape, maybe also the (for me) "wrong" threading of the end cap ...
... were OK with a cheapo light/body, but not in the price region that custom part is situated in.
Here I expected far more - my bad


Did I type you all spend too much time at the Computer, when only coming for the looong story?
;)
 
Last edited:

yellow

Flashlight Enthusiast
Joined
Oct 31, 2002
Messages
4,634
Location
Baden.at
doh,
the more I think about it, the more I get unhappy.
:(
And do not forget:
that is not the cheapo chinese "clone" of anything, as the fanboys like to state all the time,
that is a highly regarded (and well expensive) custom label product.


that head is even worse as my initial thoughts,
because of the front glass that is isolating the insert at the front (from the thermal path to the head).
and then the narrow retaining ring at the back.

the insert is simply cooking itself and can not get the heat away good.

An "easy" fix might "just" be a thicker (?) retaining ring that encases more of the insert

temp.jpg

a solution far from perfect, but at least useful
(and not adding much more labor or cost)

.. tell me when I am unfair here ...
 
Last edited:

Alaskantinbender

Newly Enlightened
Joined
Oct 16, 2017
Messages
106
oookay,
You asked for it ...
;)

in the early days of white led, we had to build our own lights - because there simply was no maker to give us good lights.
(then somewhen Fenix stomped the market with their L1P / L2P, wow that was great)

in 2004 I built my 1st 6P 18650 conversion.
Back then there was no stadard, like today, with bored out hosts and P60 inserts.
that is when I got my liking for that size and especially for the converted 6 P.
so I for sure have a bias towards that host and anyting will be compared to that!
Unfortunately the Malkoff body happend to fall for that also.

actually I am deciding to stay at 18650, or to switch to 21700.
the both hosts in question on the right:
View attachment 58226

KDLITKER:
+ VERY CHEAP,
+ still impressingly nice machining, finish good,
+ watertight (when testing batteries, I put the light(s) into a bowl of water for cooling)
+ a tad shorter than the Malkoff,
+ good grippy knurling,
+ the Kdlitker 3-level insert kicks azz,
- adding the forward klicky was a PITA, i killed 1 of the 2-pack. But the 2nd works fine now
+ did I type cheap?

Malkoff:
* extremely expensive (which I knew before).
* only shipping method offered - here to Europe - adds another 50,-- to the total
* customs add another 80,-- €
* EXTREMELY Expensive
* machining is very good, finish is really nice,
* very slippery body (I learned that in the threads, but after ordering unfortunately)
* the superfine threading at the back cap - 9 full turns - drives me crazy. Why is that not the same as the threads inside the head for that insert fixing "screw"?
* at that back end not watertight (for the cooling water bowl).
I am disassembling/wiping/reassembling the whole light the last days, whenever another layer of fog builds up at the front glass,
* the recessed pushbutton is tooooo recessed, at least for me. (and I dont think I can adapt to how it is situated with more use. I simply have to open my hand to get the thumb deep enough into the recession. And I dont want to open my hand when holding a light)
* there could have been a few flat areas added at the end of the body as anti-roll "device". The end cap has them, but the body is wider at the end.
That for example were a nice hidden feature, I would appreciate from a high end product.
* that special insert + head... i again thought that does a special purpose. But inside the head is just a flat tube, and so head and insert are not pressed together, to improve thermal path (like the heads where the insert is loaded from the Front).
I added good 5 mm of aluminium tape around the insert, which is a PITA (again), to help getting the heat away. And know it does not work good, when sooo much space has to be covered.
To be totally clear: That "mounting" is something i accept from cheapo chinese but not from such highly recommended custom maker. That should have been mentionned from the fanboys, like the slippery knurling.
* the l-m-h, high CRI insert makes a fine high cri, but is way too dim. Even the non high cri version were to dim. No match for the really bright Kdlitker.

that is imho the 1st argument for the 21700: more power!
So higher power insert "needed"
:)
Yes, correct, the "dim" brightness, that was clear from bedinning, I know.
That was why I never opted for a Malkoff till now.
Makes it even worse for me, that I finally did it - it was simply MY wrong decision.
:(
the rest - watertightness, slippery body, bad thermal mounting/aluminium tape, maybe also the (for me) "wrong" threading of the end cap ...
... were OK with a cheapo light/body, but not in the price region that custom part is situated in.
Here I expected far more - my bad


Did I type you all spend too much time at the Computer, when only coming for the looong story?
;)
Great write-up, thank you.
A question for you. Did you use flat-top cells? The feedback on AliExpress states that the protected (with type c) 21700 will not work in the KDLITKER E6-21700 P60 Flashlight Host.
 

yellow

Flashlight Enthusiast
Joined
Oct 31, 2002
Messages
4,634
Location
Baden.at
both of my cells are flat top and unprotected
(and work in both host lights)

I can push it into the KdLitker body at least 4 mm, so would guess any protected cell should fit ...
 

Lips

Flashlight Enthusiast
Joined
Mar 14, 2005
Messages
1,459
Location
Louisiana - USA
.

Malkoff:
* extremely expensive (which I knew before).
* only shipping method offered - here to Europe - adds another 50,-- to the total
* customs add another 80,-- €
* EXTREMELY Expensive
* machining is very good, finish is really nice,
* very slippery body (I learned that in the threads, but after ordering unfortunately)
* the superfine threading at the back cap - 9 full turns - drives me crazy. Why is that not the same as the threads inside the head for that insert fixing "screw"?
* at that back end not watertight (for the cooling water bowl).
I am disassembling/wiping/reassembling the whole light the last days, whenever another layer of fog builds up at the front glass,
* the recessed pushbutton is tooooo recessed, at least for me. (and I dont think I can adapt to how it is situated with more use. I simply have to open my hand to get the thumb deep enough into the recession. And I dont want to open my hand when holding a light)
* there could have been a few flat areas added at the end of the body as anti-roll "device". The end cap has them, but the body is wider at the end.
That for example were a nice hidden feature, I would appreciate from a high end product.
* that special insert + head... i again thought that does a special purpose. But inside the head is just a flat tube, and so head and insert are not pressed together, to improve thermal path (like the heads where the insert is loaded from the Front).
I added good 5 mm of aluminium tape around the insert, which is a PITA (again), to help getting the heat away. And know it does not work good, when sooo much space has to be covered.
To be totally clear: That "mounting" is something i accept from cheapo chinese but not from such highly recommended custom maker. That should have been mentionned from the fanboys, like the slippery knurling.
* the l-m-h, high CRI insert makes a fine high cri, but is way too dim. Even the non high cri version were to dim. No match for the really bright Kdlitker.

that is imho the 1st argument for the 21700: more power!
So higher power insert "needed"
:)
Yes, correct, the "dim" brightness, that was clear from bedinning, I know.
That was why I never opted for a Malkoff till now.
Makes it even worse for me, that I finally did it - it was simply MY wrong decision.
:(
the rest - watertightness, slippery body, bad thermal mounting/aluminium tape, maybe also the (for me) "wrong" threading of the end cap ...
... were OK with a cheapo light/body, but not in the price region that custom part is situated in.
Here I expected far more - my bad


Did I type you all spend too much time at the Computer, when only coming for the looong story?
;)

doh,
the more I think about it, the more I get unhappy.
:(
And do not forget:
that is not the cheapo chinese "clone" of anything, as the fanboys like to state all the time,
that is a highly regarded (and well expensive) custom label product.


that head is even worse as my initial thoughts,
because of the front glass that is isolating the insert at the front (from the thermal path to the head).
and then the narrow retaining ring at the back.

the insert is simply cooking itself and can not get the heat away good.

An "easy" fix might "just" be a thicker (?) retaining ring that encases more of the insert

temp-jpg.jpg
a solution far from perfect, but at least useful
(and not adding much more labor or cost)

.. tell me when I am unfair here ...


Sollution - Martin White
.
Heatsink2.jpg


Heatsink.jpg

.
Heatsink4.jpg
.
Heatsink3.jpg

.
Heatsink5.jpg
Heatsink6.jpg

.
20190824_142739.jpg


.

TRIPLE BITS.jpg

.
md2 triple.jpg

.
 

Lips

Flashlight Enthusiast
Joined
Mar 14, 2005
Messages
1,459
Location
Louisiana - USA
And where, pray tell, might one find this species of aluminimum heat sink???
(Hint: It' doesn't appear on the Overready website as of 3.24.2024...)

His thread and contact: He built a new shop and did his thing as a hobby so he may do more at some point...

He is CEO of https://www.ruffiansoftware.com


Services on CPF:




Martin.jpg



MartinDWhite.jpg
 

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