[Looking for someone to MAKE a couple?] Does anyone know of an extension tube that would fit Romisen RC-G2 (to make it 2xAA)?

ohaya · September 16, 2014, 4:22am

This is kind of an oddball question, but per the subject, does anyone know of an extension tube, or maybe part of a different AA light that could be used as such, to make an RC-G2 into a 2xAA light?

Or, did Romisen ever make a 2xAA light that was the same dimensions (head, etc.) as the RC-G2 except that it was 2xAA?

Thanks,
Jim

EDIT: I have changed the Subject. Anyone out there with a lathe that might be willing to make an extension tube with threads that would fit a Romisen RC-G2, and to make it into a 2xAA?

Bort · September 16, 2014, 4:24am

the threads are larger than anything i have ever seen on a flashlight so its unlikely you will find a match, why not just buy a 2AA light?

ohaya · September 16, 2014, 4:30am

Bort,

It’s because I have been building a couple of quads with the RC-G2, and the head size is absolutely perfect for that (Romisen RC-G2 Nichia quad).

I’m using a small buck driver in these, and I have a couple of 14250 batteries that I bought awhile ago from lighthound, but they’re kind of puny, plus I can’t seem to find (rechargeable) 14250s anywhere anymore, so if I could get something to make the RC-G2s into 2xAA then I could use 2x14500.

WarHawk-AVG · September 16, 2014, 6:27am

Wonder if this would fit the threading

https://www.fasttech.com/p/1088901

Bort · September 16, 2014, 6:07pm

not a chance

ohaya · September 17, 2014, 1:42am

Hi,

Sorry, I forgot to mention that I have tried extension tubes from two different brand C3s, the UF C3 and the Fandyfire C3, and neither of them work with the RC-G2. I was really hoping that Romisen might have a 2xAA light that was the same shape as the RC-G2, but it doesn’t look like that’s the case?

LowLumen · September 17, 2014, 2:13am

I have a couple of the RC-N3

http://www.tmart.com/Romisen-RC-N3-3W-100-Lumens-CREE-Q2-LED-Flashlight_p100652.html

……but I don’t have an RC-G2 to compare head or other dimensions.
It has a ‘pill’ that screws into the back of reflector, like P60, but the reflector also threads into the head (no spring).
Like most Romisen: nice build quality and beam profile.

I put XM-L2 and BB Nexgen drivers in them for maximum efficiency from 2AA or 1 CR123A.

ohaya · September 17, 2014, 2:43am

Thanks!

Do you know (or can you measure) the length and inner diameter of the back tube (the one the tailcap screws onto)?

Jim

LowLumen · September 17, 2014, 3:05am

Sure, but the front tube is for 1 CR123A; likely the rear extension will be too long for the RC-G2

2.95” long, in front (female thread) .866” OD , .754” ID

Rear (at tail cap, male thread) .783” OD , .583” ID

ohaya · September 17, 2014, 3:24am

Yes, you’re right. That rear tube looks like it’d be way too long :(…

Thanks, for checking though!

Jim

LowLumen · September 17, 2014, 3:34am

There is also a Romisen RC-I3 that takes 1 or 2 AA or 1 CR123A:

http://www.lightscastle.com/product/romisen-cree-rc-i3-led-flashlight-150031

I don’t have one though, only seen the pictures….
It’s a long shot the parts would lego with G2.

ohaya · September 17, 2014, 4:00am

Yes, I know it’s a tall order, and, that unless I get really lucky and someone actually has a solution, I may have to try a couple of different things.

It seems like with a lot of the “AA” lights, they make the tubes to fit both 16340 and AA and also the front end of the tubes is male threaded (as opposed to female threaded), which is all making the search even more difficult.

Bort · September 17, 2014, 5:18am

i think you will have to find another light to mod

ohaya · September 17, 2014, 7:45am

I might have to do that eventually, but in the meantime, I’ve found a couple of different extension tubes, and will post if any of them fit. To hedge my bet, I’ve also got an A6 inbound, but I’d really like to get this little RC-G2 set up. It works quite well with the 2x14250, pulling about 5+ amps, but just for a few seconds at at time.

ohaya · September 29, 2014, 2:24pm

ohaya:

Bort:

ohaya:

LowLumen:

There is also a Romisen RC-I3 that takes 1 or 2 AA or 1 CR123A:

http://www.lightscastle.com/product/romisen-cree-rc-i3-led-flashlight-150031

I don’t have one though, only seen the pictures….
It’s a long shot the parts would lego with G2.

Yes, I know it’s a tall order, and, that unless I get really lucky and someone actually has a solution, I may have to try a couple of different things.

It seems like with a lot of the “AA” lights, they make the tubes to fit both 16340 and AA and also the front end of the tubes is male threaded (as opposed to female threaded), which is all making the search even more difficult.

i think you will have to find another light to mod

I’ve failed on both approaches (finding an extension tube that works, and finding a 2xAA host that works) so far, so I’m thinking/wondering if someone could fabricate (= ‘make’) an extension tube for me?

I might have to do that eventually, but in the meantime, I’ve found a couple of different extension tubes, and will post if any of them fit. To hedge my bet, I’ve also got an A6 inbound, but I’d really like to get this little RC-G2 set up. It works quite well with the 2x14250, pulling about 5+ amps, but just for a few seconds at at time.

I’ve failed to either find an extension tube or an alternate 2xAA host, so am looking for someone who might make/fabricate an extension tube for the RC-G2.

Bort · September 29, 2014, 9:44pm

ohaya:

ohaya:

Bort:

ohaya:

LowLumen:

There is also a Romisen RC-I3 that takes 1 or 2 AA or 1 CR123A:

http://www.lightscastle.com/product/romisen-cree-rc-i3-led-flashlight-150031

I don’t have one though, only seen the pictures….
It’s a long shot the parts would lego with G2.

Yes, I know it’s a tall order, and, that unless I get really lucky and someone actually has a solution, I may have to try a couple of different things.

It seems like with a lot of the “AA” lights, they make the tubes to fit both 16340 and AA and also the front end of the tubes is male threaded (as opposed to female threaded), which is all making the search even more difficult.

i think you will have to find another light to mod

I’ve failed on both approaches (finding an extension tube that works, and finding a 2xAA host that works) so far, so I’m thinking/wondering if someone could fabricate (= ‘make’) an extension tube for me?

I might have to do that eventually, but in the meantime, I’ve found a couple of different extension tubes, and will post if any of them fit. To hedge my bet, I’ve also got an A6 inbound, but I’d really like to get this little RC-G2 set up. It works quite well with the 2x14250, pulling about 5+ amps, but just for a few seconds at at time.

I’ve failed to either find an extension tube or an alternate 2xAA host, so am looking for someone who might make/fabricate an extension tube for the RC-G2.

With so many lights out there i am shocked you cannot find another to fit your needs

ohaya · September 30, 2014, 12:11am

Bort:

ohaya:

ohaya:

Bort:

ohaya:

LowLumen:

There is also a Romisen RC-I3 that takes 1 or 2 AA or 1 CR123A:

http://www.lightscastle.com/product/romisen-cree-rc-i3-led-flashlight-150031

I don’t have one though, only seen the pictures….
It’s a long shot the parts would lego with G2.

Yes, I know it’s a tall order, and, that unless I get really lucky and someone actually has a solution, I may have to try a couple of different things.

It seems like with a lot of the “AA” lights, they make the tubes to fit both 16340 and AA and also the front end of the tubes is male threaded (as opposed to female threaded), which is all making the search even more difficult.

i think you will have to find another light to mod

I’ve failed on both approaches (finding an extension tube that works, and finding a 2xAA host that works) so far, so I’m thinking/wondering if someone could fabricate (= ‘make’) an extension tube for me?

I might have to do that eventually, but in the meantime, I’ve found a couple of different extension tubes, and will post if any of them fit. To hedge my bet, I’ve also got an A6 inbound, but I’d really like to get this little RC-G2 set up. It works quite well with the 2x14250, pulling about 5+ amps, but just for a few seconds at at time.

I’ve failed to either find an extension tube or an alternate 2xAA host, so am looking for someone who might make/fabricate an extension tube for the RC-G2.

With so many lights out there i am shocked you cannot find another to fit your needs

I think that I may’ve found a 2xAA host that I can/would like to use (but probably not for a quad), see:

Also, I think that I’ve found someone who can make an extension tube for the RC-G2. This is still really my preferred option, because it gives the flexibility of a short (1x14500), but slightly less bright quad and being able to go to brighter quad, with more capacity (2x14500), albeit with a slightly longer host (with an extension tube).