Any simple plans for a 12v 7ah can?

[kramynot2000]

For the past year or so, I've been in the process of building a can light with the mag light head, etc. Anyway, I came upon a great deal on an 18w HID light with a huge AUL cannister. The only thing is that it needs a new battery. I was thinking that instead of buying two of those big 12v 7ah batteries, I'd hook the head up to a small canister with just one of those batteries. So, has anyone found a simple way of doing this?

I tried padipro's way of heating a 4" PVC pipe and stretching it but just could not get that to work. He's much more talented than I am! If there is a source of some PVC or acrylic tube or pipe that will readily fit a standard 12v 7ah SLA battery, please let me know!

Thanks,
Tony

 

[PRL]

http://www.mcmaster.com/param/asp/psearch.asp?FAM=plastics&FT_128=677&FT_101=20338&session

 

[kramynot2000]

Thanks!

Looks like I can get a 5" tube, but its strange they don't sell a 5" diameter acrylic disc. Anyone know where go get one of those?

 

[PRL]

Get a sheet of acrylic, trace out the disk and cut it out with a saw.

 

[in_cavediver]

Thanks!

Looks like I can get a 5" tube, but its strange they don't sell a 5" diameter acrylic disc. Anyone know where go get one of those?

What kind of tools do you have available?

Mike

 

[kramynot2000]

What kind of tools do you have available?

Mike

Hand tools basically. Yeah, I do have a reciprocating saw, but again, its the talent to do this. I build motorcycles, I fix old cars (how about a '67 right hand drive British taxi), I reload fairly exotic ammunition, but for some reason, I can't get this *&^%$#$ canister right!

 

[kramynot2000]

What kind of tools do you have available?

Mike

Hand tools basically. Yeah, I do have a reciprocating saw, but again, its the talent to do this. I build motorcycles, I fix old cars (how about a '67 right hand drive British taxi), I reload fairly exotic ammunition, but for some reason, I can't get this *&^%$#$ canister right!

 

[in_cavediver]

Hand tools basically. Yeah, I do have a reciprocating saw, but again, its the talent to do this. I build motorcycles, I fix old cars (how about a '67 right hand drive British taxi), I reload fairly exotic ammunition, but for some reason, I can't get this *&^%$#$ canister right!

It's quite possible to fashion an acryillic end cap from flat stock. I recommend laminatng two thinner sections together to make you end caps. Just be patient and take your time. Mcmaster carr should have what you need.

Mike

 

[PRL]

It all depends on your budget, but I would go with PVC and forget acrylic. PVC is much cheaper. And there are some great plans for a can on this board.

 

[kmorley]

5" is an oddball size and you don't really need it for anyting but a old heavyweight 14 amp cave light.

you can get two 3 to 4 amp sla batteries in a 4' tube which is a lot cheaper and gives you 6 to 8 amps want more burn make an xtra batttry pack and change between dives still cheaper than a bigger cannister.

Its not that hard to build a nice canister from 4" but if you are in a hurry try one of the instant cannisters from the Airspeed divelite book they take about 1/2 hour and cost about $10 to build plus batteries. I built one for a buddy and it works fine.