Tank Trim?

[UaVaj]

While underwater. To improve streamline.

If you only had one choice. Is it better to go smaller diameter or to shorter length?

 

[terrillja]

While underwater. To improve streamline.

If you only had one choice. Is it better to go smaller diameter or to shorter length?

I'd say go longer. If you have a longer tank you can shift it more. An AL63 doesn't have a lot of ability to shift it around, so you are pretty much stuck with adjusting other things to get good trim.

 

[spectrum]

I agree, longer.

A longer cylinder will provide more opportunity for adjustment. this can be very important when diving a 2 band BC. My Sherwood Avid and an HP 80 barely allows 2 inches of freedom.

While it is still a solid the buoyancy properties do change over the course of the dive. A longer cylinder will distribute this change and play less games with your center of gravity.

Pete

 

[SparticleBrane]

Are the world's best swimmers short stubby guys, or long lean guys?

 

[UaVaj]

Given that said. Longer is better and Thinner is better. Using Worthington tanks.

Would it be safe to say that you would swim better with a HP120 compare to a HP80. Both are same diameter but HP80 is shorter by about 8".

Would it be safe to say that you would swim better with a HP100 compare to a LP95. Both are the same height but the LP95 is 1/2" more in diameter.

 

[H2Andy]

well, longer tanks are more adjustable, and like Pete said, will shift your COG less over the dive

but basically, i think you can adjust to either if you know how

 

[SparticleBrane]

Honestly, this isn't something you should really be worried about.

 

[Saltwater Junky]

Haven't given it much thought until now; however, will continue to read this thread for more insight.