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Follow-up on cells for the Logan 17500.

I bought a set of 4x16500s from the river. They seem good so far.
Rated at 1200mah.
The fit is excellent -- they are flat-tops, and close to regulation size, so the head seats deeply even when off. I was worried with some other cells -- longish 17500s with a button-top, e.g. -- that the cell might be so long that the head would not engage many threads when it is loosened for off.

 
I use a thin piece of plastic or paper as a spacer to reduce the rattle. Sometimes, I happen to find just the right sized Oring to fit in there
I've thought about trying to duplicate what McGizmo Sapphires have - a small segment of foam above the cell. Seems like, with some tweaking, you get get a good balance of rattle resistance without interfering with the function.
 
I've thought about trying to duplicate what McGizmo Sapphires have - a small segment of foam above the cell. Seems like, with some tweaking, you get get a good balance of rattle resistance without interfering with the function.
I find the foam option to be...dubious. I had an arc-aaa and an older thrunite where the foams were disintegrating. Couldn't tell if it was the repeated compression, abrasion against the threads, the lube eating away at it, etc., but eventually the foam bits got sludgey and smeary.

Here's how I mitigate the rattle while in operation, It's a single layer of rolled engineering paper. As you might see, the paper has softened enough that it no longer catches on the batteries (even thicker ones like Olight NiMH) during battery changes. In this particular light, the body tube is relatively roughly machined and left bare, so the oxide powder would continually coat the cells, and the walls would lightly score the wrapping. I intend to buff it out with a power drill (or a cheap lathe if I find one), but at that point I might as well also fashion a proper plastic fitment sleeve since more material would be removed...The rest of the paper "sleeve" is in quite good condition.

**p.s., a couple dabs of Deoxit Gold is the bee's knees. Smoooooov operation, seems to be compatible with the replacement orings I chose, and so far it's keeping the threads clean of oxide residue (gotta clean the threads before applying)
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Follow-up on cells for the Logan 17500....
That is excellent news.

As far as my issues with my CR123-based Logan S.S. model, I'm still working on getting all the accessories to play nice with each other. Hopefully soon I'll have some good news. Well, somewhat related, my Black aluminum Peak Eiger with the key-ring top is headed my way.
 
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here's a listing I put together some years back of the cross reference history of materials and heads...

though this doesnt really address the newer stuff....
 
I'm a little late on posting this one but I recently acquired this piece thanks to my curiosity and Robyn's hospitality and delightful customer service. I discovered this light from a picture (see below) on their second to last instagram post (2017) and I was intrigued by the design as I'm a sucker for old-school diamond knurling patterns. I could also tell it was a clicky of some sort so I really wanted to have a Peak with a proper clicky switch. Nothing against the momentary switch on the Eiger/Capitan/Logan but I think most individuals here will understand. I reached out to Robyn with a picture from the post and she did some digging around and found one!

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I had maybe thought they were for a contract but according to Robyn, Curt had made 20ish of them for a TacOps East show that she was a vendor at some 11 years ago. Apparently, Curt thought the LEOs would like them but didn't come to fruition for some reason. I did the dirty work and sourced all of the details about the light from Robyn. I'm interested in everyone's thoughts as to why they think the LEOs passed on these? Also, for those who are familiar with their Mil/LEO offerings.. is there any of the design language in this model? I think it's a really interesting piece. Funny story, when I was discussing this light with Robyn, she initially thought it was an 18650! Then she sent a follow-up saying it was a 17500 which I was initially bummed but still cool with since I have all the delrin spacers from the Logan 17500. However, when it arrived I was thrilled when my 18500s from my MD3 I recently sold fit perfectly in it.

Peak LED Solutions PROTOTYPE flashlight
Power source
: 18500 li-ion direct-drive. 3V-4.2V? (NOTE: I was able to use one of the delrin spaces from the Logan 17500 to run a 3V primary and 3V Li-ion rechargeable.. does not run on NiMH though.)
LED/emitter: Cree XM-L (appears to be cool white)
Optics/Reflector: Smooth reflector
Material: Hard-anodized aluminum
Potted: Yes
Activation: Forward-clicky Judco tail switch
Features: Adjustable black delrin tailcap to allow tail-standing
Dimensions: Length: 4.59" / 116.6mm;
Head Diameter: .98" / 25.00mm ;
Body Diameter: .86" / 22.00mm
# Units made: ~20
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I remember this project and it was a nice design. You asked why it never really went over well with police and although I can only guess I will give my opinion. I believe this was a light from 2017 as you mentioned and if so by this time the 18500 was not very common. The 18650 was still used in many more police related lights and the 21700 was also gaining traction.

Also as nice as it is to find a quality small custom shop it is very hard for such a shop to supply the quantity of lights to make it worth their time. Yes they may make a little money at first moving a batch of 20 or so lights however if they get really popular they have to be able to keep up. Many departments choose equipment not only by price but also by availability. A custom shop will not make much catering to smaller departments and the bigger agencies are much better. It is very normal for a large agency to graduate 100 new recruits and when that order comes through can the company supply it quickly. Small custom shops can make better lights however they can not often keep up with large contracts. This is why many nice shops never even get a chance as larger agencies stick with well established brands. So often even if the light meets their standards it will never catch on more so not because of the actual product but because the maker cant guarantee a steady supply.

Now it can be nice for the officers who want to carry something other than standard issue however in reality many will not do so. Most officers are not flashlight enthusiast. Keep in mind most of us here are "in the know" and have no problem seeking out all types of interesting lights. The general public really has no idea and will not be relevant to a custom maker trying to become bigger and better. I am a fan of Peak and have led several officers to their products. These officers bought a light and although they enjoyed it they were not really "flashaholics" like us.
 
Recently acquired Logan mule head (219b sw30) on my black HA Al 17500 body. I’m always so impressed by how lightweight Peak’s aluminum setups are and the hard-anodization has held up too. Although looking forward to when it has some honest wear on it.

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