Making a backplate/measurments

[Amphibious]

Building a backplate - anyone know where I can get the dimentions/thickness?

I have some friends in a metal shop who might be able to put one together for me, but I am unable to get my hands on one to measure it - not so many backplates in Northern BC.

Any help would be much appreciated.

Willer

 

[JWL]

Back plate plans

http://membres.lycos.fr/raynaldrobinot/BACKPLATE/rLACASSE.htm

 

[Amphibious]

PERFECT! exactly what I was looking for! You just saved a starving student/instructor some much needed $$$. if you're ever in Prince George....


Anyone care to debate 1/8 (5lbs) vs 1/4 (10lbs) plate?


Willer

 

[thin_air]

i think that this model is similar, except for the second bend in the backplate, besides that i was unable to see any differences...


oh,and its in adobe acrobat format, be sure to get to page 2 (i didnt find it for awhile...)

 

[Amphibious]

good call - te second bendpoints seem to be right through the strap slots on the Lacosse diagram. was wondering if that was simply and image compression issue with printing.

Thanks all.

willer

 

[thin_air]

if you look at the picture on the lacasse it looks as if the slots are in the second bendpoint although the version i have doesnt have the slot diameters, i think an optimal backplate could be made with a combination of the 2 designs...

here is the STA patter that went with it...

 

[JWL]

1/8 vs 1/4

It would really depend on where you do most of your diving. Warm water vs Cold. If in cold water with a dry suit the 1/4 will let you use less weight on the weight belt.
I have an 1/8 but most of my diving is done in warm water with a 3mil shorty.

 

[Jon]

It also depends on what kind of tanks you are using.
When in warm water diving aluminum I use a plastic plate. For cold water with a drysuit and double steel tanks I use the 1/8. Some friends of mine dive double aluminum 80's with a drysuit in cold water and use the 1/4 to offset the bouyancy. Whatever weights you properly, so you don't have to put it on a belt, would be the one to go with.

Jon

 

[Amphibious]

good points - I'll be doing most of my "plate" diving in the Pacific northwest - drysuit. Probably twin AL 80's as I can't affort the LP Steel 104 set I really want... (need more cash).

See if they can dig it up in 1/4.

Willer