Mule head on Cx2 body?

[senorcosas]

I've got an S27 Cx2 and a Mule PD. The S27 has the DBx2 and the Mule has the GDx2. I've tried 8 different AW black wrapper protected 17670's and none have fit in the Cx2 body. I would really like to run the Mule head on the Cx2 body. Do I need to bore the body (or lightly sand)? Would unprotected 17670's fit?
Also what are the consequences of running the S27 on the PD body? Reduced brightness and run time? Thanks for any light you can shed here.

 

[TxTroubleMaker]

Okay, I'll take a stab at this, but take what I say with a big grain of salt...

The Mule head that you have is probably not compatible with two CR123's. The last wave of Mules that were offered with the Cx2 body are being ran with a different LE than the one in your Mule, so your only option would be a 17670.

As far as your Cx2 body, you make want to put a feeler out in homemade/ modified section to see if someone can bore the body out for you. My Cx2 body was one of the lucky ones that worked with AW's 17670's, although I have quite a few 17670's and I may have just gotten lucky and had a "skinny" one.

I did run my S27 Cx2 head with a PD body and it worked with an R123, but I would have to say that it probably would only run for maybe 30 min. +/- a few minutes. It won't hurt the S27 head, it just won't run for very long... Hopefully this helps a little.:shrug:

 

[knifebright]

Ok couple things you can do here.

1. you can pick up a spacer cell and run your mule head on the 2 cell body with a single cell. Problem solved but not ideal.

2. you can sand the battery cover a bit to get some to fit. Not ideal and not all that safe.

3. you could have your cx2 body bored out but you'll still have some of the same problems but a much better solution.

Problem being that none of these solutions give you a proper way to run your s27 head which will run on 1 cell but really needs two cells.


you could swap the boards. this is reletively simple but please do not confuse simple with easy. You would end up with a S27 pd with the board from the mule at 535ma.. no problems here.

the DBx2 that is currently in your s27 is set at 917/125. WIth a little tweaking of the resistors (i'd need to find my notebook and calculator to give you actual numbers) you could drop it down to somewere around 500/125.

my mule through tweaking is on a Cx2 body at 611/125 and i love it!!!

Hope that confuses you more!! just kidden, pm me if you need more info

jimmy

 

[AndyTiedye]

I found that my Mule Cx2 body will take 17670s (AW, with the label off).
My S27 Cx2 body will not. The difference?

The Mule Cx2 body is polished smooth on the inside.
The S27 Cx2 body is not.

Was that a change that was introduced between the two batches of Cx2 bodies?

 

[TxTroubleMaker]

I found that my Mule Cx2 body will take 17670s (AW, with the label off).
My S27 Cx2 body will not. The difference?

The Mule Cx2 body is polished smooth on the inside.
The S27 Cx2 body is not.

Was that a change that was introduced between the two batches of Cx2 bodies?

Hmmm... That's an interesting observation, my S27 Cx2 body was rough on the inside as well. Although I could squeeze a 17670 in mine...:thinking:

 

[senorcosas]

Thanks for all suggestions. I finally found two 17670's out of the 17 I have that fit the Cx2 tube, although they had to be pressed in and shaken out forcefully.

 

[McGizmo]

.........The Mule Cx2 body is polished smooth on the inside.
The S27 Cx2 body is not.

Was that a change that was introduced between the two batches of Cx2 bodies?

The machine shop had a lot of "fun" with the deep bore in these paks. They went through a good number of cutting inserts and special drills trying to come up with a good method of machining the paks. I told them that there were no special requirements on the surface finish as galling was common with some of the parts. My requirement did not extend past hosting the CR123 cells. Titanium takes its toll on cutting tools and even with small runs, dimensions can and will change as the tools wear. The key is to minimize tool wear with proper technique and tool selection and to have QC in place to keep from going out of tolerance. Making these parts has been a real learning curve for the shop and they have a good background and knowledge of cutting Ti. I am glad that the learning curve is theirs and not mine! :green: When I mess with Ti personally, I don't wonder if I will wear out or break some tools, I count on it!

I recall trying to promote and be compatible with the 17650's and the 17500's but back then the push was on the overly fat 18650's and I let myself get into trouble with those. Since then I have not paid attention to the Li-Ion batteries nor would I know a standard dimension or tolerance to specify if I were to try to accomodate them in addition to the CR123's. :shrug: :tinfoil:

 

[Kiessling]

Absolutely perfect. Just ignore those Li-Ions. We don't need them here ... :thumbsup:
Long live CR123.
bernie

 

[jdriller]

bernie, bernie, bernie :shakehead

I guess we will never be able to get you to into the dark "rechargeable" side.

 

[AndyTiedye]

Absolutely perfect. Just ignore those Li-Ions. We don't need them here ... :thumbsup:
Long live CR123.
bernie

Rechargeables are green! While the process of recharging is somewhat
inefficient, compared to the energy that goes into making a throw-away
(recycle, we hope) battery…

Also, using a 17670 in a 2 cell light kind of lets us switch between "miser" and not in the same light.

Has anybody tried polishing the inside of their Cx2 body to make a 17670 fit?
Or boring it out?