Sold/Expired Wanted: TW4 KL4 with low Vf for 1x cr123 primary

Trying to build my own TW4.
Looking for a KL4 head with a low Vf that can run off a single cr123 primary
HA finish in good shape.
Hopefully has little or no doughnut in the beam.
Send me a pm.
Thanks.

Re: Wanted: KL4 that can run on 1x cr123 primary

I didn't know such a thing existed?!

Re: Wanted: KL4 that can run on 1x cr123 primary

errr . . . mine will run on a single cell. It's not quite as bright that way, but it's still plenty of light for casual use. Do other require 2 cells?

Re: Wanted: KL4 that can run on 1x cr123 primary aka TW4

Still looking...
lovecpf

Re: Wanted: KL4 that can run on 1x cr123 primary aka TW4

How about a ready-2-run TW1 with a U2SWOH emitter and an incan head as well?

http://www.cpfmarketplace.com/mp/showthread.php?t=186541

Re: Wanted: KL4 that can run on 1x cr123 primary aka TW4

I'll have to check that out.

I really should have jumped on the 2 tw4s you had for sale.
Were they in that thread too?

donn_ said:

How about a ready-2-run TW1 with a U2SWOH emitter and an incan head as well?

http://www.cpfmarketplace.com/mp/showthread.php?t=186541

Click to expand...

Re: Wanted: KL4 that can run on 1x cr123 primary aka TW4

I think they were in Surefire Bonanza I.

Re: Wanted: KL4 that can run on 1x cr123 primary

peterthomson said:

I didn't know such a thing existed?!

Click to expand...

Supposedly the first few batches of KL4s have no discernible output difference between 1xCR123A or 2xC123A...one of my KL4s had this ability, turns out the current draw was below 1 amp, thats probably why.

Supposedly successive batches no longer had the capability and operates at somewhat reduced output on 1xCR123A.

the easiest way of reproducing the TW4 design would be to use a RCR123A/16340 in place of a CR123a, you should get about 30 minutes per charge...not a bad option given the output of the KL4.:huh:

Re: Wanted: KL4 that can run on 1x cr123 primary

Thanks for the details. I am looking for one like the first batch you describe.

Illum_the_nation said:

Supposedly the first few batches of KL4s have no discernible output difference between 1xCR123A or 2xC123A...one of my KL4s had this ability, turns out the current draw was below 1 amp, thats probably why.

Supposedly successive batches no longer had the capability and operates at somewhat reduced output on 1xCR123A.

the easiest way of reproducing the TW4 design would be to use a RCR123A/16340 in place of a CR123a, you should get about 30 minutes per charge...not a bad option given the output of the KL4.:huh:

Click to expand...

Re: Wanted: KL4 that can run on 1x cr123 primary

It's not the first batch, it's just a very low Vf LED

Re: Wanted: KL4 that can run on 1x cr123 primary

Thanks. Is there one out there for me?

GarageBoy said:

It's not the first batch, it's just a very low Vf LED

Click to expand...