This project is on idle for now, until I get my GT and short tube. We still need to figure out how to get a third battery carrier as well.
I did work on the design a little bit today. I think knurling is going to be out of the question but I’ll see what we can come up with.
I talked to Neal he said he would get back with me on selling the carrier for the batteries will let u know what he tells me
He sounded like it wouldn’t be a problem just think he needs to run it by lt
I was talking to Kawiboy1428 about adapting the single carrier SD75 battery tube to the GT in order to get built in charging and a power bank function. It would require an adapter as the threads are different.
Anyway, he said he might be able to get some parts from Lumintop.
Td1042k, maybe you can ask if he is able you get extra carriers.
interested as well
I would be interested if the third carrier is available. .
Interested if third carrier is available
I’d be interested as well, depending on price, and availability of battery carrier. If someone can find and post a link for the extra battery carrier, and the shorty tube, that would really go a long way, tours selling this idea. Too much leg work in finding and buying an extra carrier and tube will deter, people from buying this coupler.
Laziness is human nature.
I’m working with a local machinist to get a prototype made. Once I receive GT #2 I’ll be able to test with both short tube and double long tube.
yes, interested!
I’m interested. Don’t worry about knurling either, just keep it simple.
Battery carriers are going to be for sale in the BLF GT70 Group Buy too. 
Please enjoy your Bump of the Month Club monthly bump. :partying_face:
Any news on the couplers? Or spare carriers?
Short Tubes are for sale on the GT70 group buy, M4DM4X, Sofirn AliExpress Store, freeme, & probably other places too.
Carriers are available on the GT70 group buy too.
Skylumen is selling coupler.
https://skylumen.com/collections/v54-lights/products/blf-gtvn-accessories
Ooof, $35 for the coupler. That’s pretty up there. I wonder if he had them custom made or something. There aren’t any pictures.
He said custom made, and limited… i ordered one for my blf gt cft 90… $35 for the coupler and $25 for the carrier… no more money. 
I choose to run 12 cells because cft90 are not efficient led…
Short tube is normally $10-$15 , but sky lumen is selling for $25 , TO EXPENSIVE DOT COM.
Nothing is expensive if you really want it. Lol…
I am looking to get this short tube for the GT, where can they be ordered? ( i seen Vinh has showed them on his site at his expensive price.