Gear / Technical Help > Remote Power
Idea for VMS (& other 12v m-tip reverse polarity gear)
todd e:
id love one if you are selling still?
todd e:
--- Quote from: noahbickart on September 02, 2021, 06:12:07 PM ---I’ve got extra tips if anyone else needs one.
--- End quote ---
i have one original VMS tip, but wanted to re-visit the internal battery pack option for 007
fanofjam:
--- Quote from: todd e on March 25, 2024, 11:37:33 AM ---
--- Quote from: noahbickart on September 02, 2021, 06:12:07 PM ---I’ve got extra tips if anyone else needs one.
--- End quote ---
i have one original VMS tip, but wanted to re-visit the internal battery pack option for 007
--- End quote ---
Todd, back when I was futzing around with VMS's alot, I made up like 10 or so DIY battery sleds to give away. I'd give you one but unfortunately, they're all stashed away in a box in storage up in PA and I've been in Cali for the last year and I'll be here until November. It's a long story, but when I leave Cali, I head back home to Virginia, so I have no idea when I'll finally get my shit out of storage in Pennsylvania.
If you're handy with a soldering iron and a multi-meter, you can do this yourself. It's not very hard to do. All you need is a pair of wire cutters or something that will snip some metal, some flat metal strips (maybe 1/4 inch wide and somewhat robust), solder and soldering iron, solder flux, and non-conductive epoxy. (For example, don't use JB Weld because it has metal shavings impregnated in it.)
I recall that I sourced the strips from ebay. I can't remember details about what I bought except that they're 1/4 inch wide and pretty robust. It can't be foil strips because you want the strips to be able to retain their shape and apply pressure to ensure the sled stays connected when pressed up against the clips on the inside of the VMS.
Basically, all I did was took one of the non-reverse polarity battery sleds and epoxied over the existing terminals to make them non-conductive. I can't remember if I had to do any snipping, but it seems like I had to do some minor modifications with the wire cutters to make everything fit. Then I soldered the 1/4-inch thick flat metal strips onto the opposite terminal. Once everything was soldered up, I sort of molded the 1/4 inch strips in an arc so that the new strips will apply pressure onto the tabs of the VMS. Obviously, you want to make sure that the new strips are soldered to the opposite pole as the original battery sled had.
Before you stick it into your VMS with batteries loaded, use your multi-meter to check continuity, check polarities, check voltage at the terminals, etc. Boom you're almost done! It'll take you two hours at most for the first one...45 minutes for each one thereafter.
After you slide the sled in, you'll probably need to re-bend or re-shape the 1/4 inch strips so that they optimally contact the clips inside the VMS. I ended up throwing my first version away because the strips needed to be repositioned slightly.
I recommend buying 2 or 3 of the battery sleds so you can practice on one before settling on a final design. Even more if you want to have a spare or two.
Good luck!
todd e:
--- Quote from: fanofjam on March 25, 2024, 06:34:24 PM ---
--- Quote from: todd e on March 25, 2024, 11:37:33 AM ---
--- Quote from: noahbickart on September 02, 2021, 06:12:07 PM ---I’ve got extra tips if anyone else needs one.
--- End quote ---
i have one original VMS tip, but wanted to re-visit the internal battery pack option for 007
--- End quote ---
Todd, back when I was futzing around with VMS's alot, I made up like 10 or so DIY battery sleds to give away. I'd give you one but unfortunately, they're all stashed away in a box in storage up in PA and I've been in Cali for the last year and I'll be here until November. It's a long story, but when I leave Cali, I head back home to Virginia, so I have no idea when I'll finally get my shit out of storage in Pennsylvania.
If you're handy with a soldering iron and a multi-meter, you can do this yourself. It's not very hard to do. All you need is a pair of wire cutters or something that will snip some metal, some flat metal strips (maybe 1/4 inch wide and somewhat robust), solder and soldering iron, solder flux, and non-conductive epoxy. (For example, don't use JB Weld because it has metal shavings impregnated in it.)
I recall that I sourced the strips from ebay. I can't remember details about what I bought except that they're 1/4 inch wide and pretty robust. It can't be foil strips because you want the strips to be able to retain their shape and apply pressure to ensure the sled stays connected when pressed up against the clips on the inside of the VMS.
Basically, all I did was took one of the non-reverse polarity battery sleds and epoxied over the existing terminals to make them non-conductive. I can't remember if I had to do any snipping, but it seems like I had to do some minor modifications with the wire cutters to make everything fit. Then I soldered the 1/4-inch thick flat metal strips onto the opposite terminal. Once everything was soldered up, I sort of molded the 1/4 inch strips in an arc so that the new strips will apply pressure onto the tabs of the VMS. Obviously, you want to make sure that the new strips are soldered to the opposite pole as the original battery sled had.
Before you stick it into your VMS with batteries loaded, use your multi-meter to check continuity, check polarities, check voltage at the terminals, etc. Boom you're almost done! It'll take you two hours at most for the first one...45 minutes for each one thereafter.
After you slide the sled in, you'll probably need to re-bend or re-shape the 1/4 inch strips so that they optimally contact the clips inside the VMS. I ended up throwing my first version away because the strips needed to be repositioned slightly.
I recommend buying 2 or 3 of the battery sleds so you can practice on one before settling on a final design. Even more if you want to have a spare or two.
Good luck!
--- End quote ---
wow, this is so up my alley and exactly what i now plan on doing.
i was looking at the easier to find batteyr sled last night and realized i'd need to flip the contacts as they are now, and love the epoxy idea to ensure no shorts.
thank you again.
i am beyond thrilled regarding your post, this is seems very within reach and anything to cut off an external battery pack is greatly appreciated!
EDIT: this looks promising, also ebay
https://www.ebay.com/itm/353333375517?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=wsa8xdw_tae&sssrc=2047675&ssuid=T5-nXUyeQRS&widget_ver=artemis&media=COPY
Similar except this uses the 'spring' instead of the bend battery springs.
https://www.ebay.com/itm/284534816003?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=3sRbM8MHTG6&sssrc=2047675&ssuid=T5-nXUyeQRS&widget_ver=artemis&media=COPY
fanofjam:
--- Quote from: todd e on March 27, 2024, 10:45:00 AM ---
wow, this is so up my alley and exactly what i now plan on doing.
i was looking at the easier to find batteyr sled last night and realized i'd need to flip the contacts as they are now, and love the epoxy idea to ensure no shorts.
thank you again.
i am beyond thrilled regarding your post, this is seems very within reach and anything to cut off an external battery pack is greatly appreciated!
--- End quote ---
Excellent! I'm really glad to help. I know you can do it, if for no other reason that I did it.
The two ebay connectors you located definitely look worth trying. I think either one of them might work...if I was a betting man I'd bet on the clip more than the spring. The challenge is that there's not a heck of a lot of room to work with between the end of the sled and the connectors and by epoxying over the old terminal, you're taking up even more of the precious millimeters that you already have to work with. That said, it's not an impossibly tight space so with some creativity and elbow grease, I'm sure you will not be denied. LOL.
By the way...one other pointer. Once you get the sled finished and have it ready for insertion/testing. Put the sled into the VMS without batteries. Check to make sure that neither one of your new contacts on the sled are cross-contacting either of the two clips on VMS. I mentioned earlier that I made up a bunch of my own DIY's to give away. Well, as you might imagine as I was doing this my 'manufacturing quality control' was non-existant. My sleds were visually gnarly looking, but functional. LOL. That said, I did end up throwing out a couple of them because when I soldered the strips they were positioned slightly cock-eyed so that, if I'd put them into the VMS with batteries installed, it would have shorted my pre-amp because one of the cock-eyed strips unwittingly was in contact with both VMS clips. Doy!!!
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