eelnoraa
Contributor
For reason that is outside of the topic here, I am a STA user. I have had used STA from 3 manufactures: DiveRite, Deep Outdoor, Halcyon. I haven't been 100% satisfied with any of these. The main issue is the relative postion of the cam slot on the STA with respect to the bolt holes, specifically the top bolt hose, and also with respect the the cam slots on the backplate.
First, Deepoutdoor vs Halcyon. Also the DR for reference
Left is DOD, right is H. Notice the slot is higher on the H by about half of the width of the band, so about 1 inch.
DR version. If you pay attention to the bolt location vs the cam slot location, the cam band will be another 1 inches higher than the H.
Now, STA mounted on backplate (H standard size).
DOD STA on plate plate. Left picture is the top, righ is the bottom. Notice the band on the STA is still higher than the slots on the plate, by half inch. DOD STA maintain the 11 inches separation between top and bottom slots, makes the STA very long. As you can see, the bottom extended belong the bottom of the plate.
H STA on H plate. You get the idea. You can imagine the DR STA will make the camband even higher.
Most STA out there are cut like DR's. The issue is this kind of STA makes the tank sit ~2.5 inches higher than without one. For smaller divers, this is way too high. It means head hitting first stage. Very uncomfirtable dive. Halcyon and Hollis or similar cut are better by 0.5 inch. But DOD one are 2 inches lower. It is the best in this aspect. The only issue with DOD are it is a bit long.
I think manufactures should really think about this. I think the ideal STA would have the top slot under to match the slot on the plate, but the bottom slot line up with the bottom bolt hole. So it will allow divers to mount their tank NOT any higher than without STA.
I think DOD almost had it perfect except when diving with short tanks like HP80. H is also close, but I wish they can shift the slots to one side by 1.5 inches.
Just random vent on Sunday morning
First, Deepoutdoor vs Halcyon. Also the DR for reference
Left is DOD, right is H. Notice the slot is higher on the H by about half of the width of the band, so about 1 inch.
DR version. If you pay attention to the bolt location vs the cam slot location, the cam band will be another 1 inches higher than the H.
Now, STA mounted on backplate (H standard size).
DOD STA on plate plate. Left picture is the top, righ is the bottom. Notice the band on the STA is still higher than the slots on the plate, by half inch. DOD STA maintain the 11 inches separation between top and bottom slots, makes the STA very long. As you can see, the bottom extended belong the bottom of the plate.
H STA on H plate. You get the idea. You can imagine the DR STA will make the camband even higher.
Most STA out there are cut like DR's. The issue is this kind of STA makes the tank sit ~2.5 inches higher than without one. For smaller divers, this is way too high. It means head hitting first stage. Very uncomfirtable dive. Halcyon and Hollis or similar cut are better by 0.5 inch. But DOD one are 2 inches lower. It is the best in this aspect. The only issue with DOD are it is a bit long.
I think manufactures should really think about this. I think the ideal STA would have the top slot under to match the slot on the plate, but the bottom slot line up with the bottom bolt hole. So it will allow divers to mount their tank NOT any higher than without STA.
I think DOD almost had it perfect except when diving with short tanks like HP80. H is also close, but I wish they can shift the slots to one side by 1.5 inches.
Just random vent on Sunday morning