Eddy fin too light?

[a878bob]

I bought Eddy fins to help keep my feet up while sm'ing/cave training. But now almost exclusively dive a rebreather. I love the finning characteristics of my Eddy fins plus the way cool orange color. But I add all my weight as low as I can in order to keep my butt down in good trim.

The Eddy fins still help keep my feet up, but I'm wondering if I'm fighting with myself. I've never owned anything like a jet to compare with. Before my Eddy's, I had mares quattro's for as long as I can remember, so, still a relatively light fin. Any thoughts?

 

[Akimbo]

It sounds like you aren't sure if a heavier fin would work for you. Have you considered experimenting with ankle weights or just adding some small fishing weights?

 

[tbone1004]

@a878bob which CCR are you on? Most of them put you head up due to the counterlungs. SF2 would be about the only exception to the rule.... They are perfect diving my meg and obviously on sidemount as well

 

[a878bob]

Prism, it's weird I know, nobody else I know has the butt up issue, it's usually the opposite as you said, with head up.

 

[tbone1004]

Prism, it's weird I know, nobody else I know has the butt up issue, it's usually the opposite as you said, with head up.

is the unit setup with stock config or did you flip the onboard bottles over? Do you have any lead anywhere on the rig? wet or drysuit?

 

[a878bob]

Stock, not flipped,dry suit, all the weight on the stand and waist.

 

[tbone1004]

Stock, not flipped,dry suit, all the weight on the stand and waist.

may just be too much air in your feet from the drysuit, but that's weird...

 

[kelemvor]

I bought Eddy fins to help keep my feet up while sm'ing/cave training. But now almost exclusively dive a rebreather. I love the finning characteristics of my Eddy fins plus the way cool orange color. But I add all my weight as low as I can in order to keep my butt down in good trim.

The Eddy fins still help keep my feet up, but I'm wondering if I'm fighting with myself. I've never owned anything like a jet to compare with. Before my Eddy's, I had mares quattro's for as long as I can remember, so, still a relatively light fin. Any thoughts?

I use eddy fins in a wetsuit, but have to use a more negative fin in my drysuit. In my case I use diverite XT when in the drysuit. As others have said, perhaps try ankle weights, as others have said.

 

[cerich]

I bought Eddy fins to help keep my feet up while sm'ing/cave training. But now almost exclusively dive a rebreather. I love the finning characteristics of my Eddy fins plus the way cool orange color. But I add all my weight as low as I can in order to keep my butt down in good trim.

The Eddy fins still help keep my feet up, but I'm wondering if I'm fighting with myself. I've never owned anything like a jet to compare with. Before my Eddy's, I had mares quattro's for as long as I can remember, so, still a relatively light fin. Any thoughts?

are you "feeling" out of trim or are you actually out with video evidence? Just curious. Plus, instructor talking now versus gear seller, if you are in a good frog kick trim you should feel the knees wanting to be above the horizontal plane if fins were really that light instead of your butt. Plus, in fresh even XL Eddy are barely positive so I would suspect that either air in foot (like Tom said, and which I actually do on purpose even with my Eddy's on ccr sidewinder) or your boots are just really positive.. which you may need a heavy fin to overcome

 

[stuartv]

Eddy fins definitely CAN be too light in some configs.

I would switch to more negative fins before I would add weight to my rig that is just for trim.

That is why I have 4 pairs of fins for normal diving use. 2 pairs of negative fins (1 L and 1 XL) and 2 pairs of Eddy fins (1 L and 1 XL). The L fins fit my wetsuit booties. The XL fins fit over my drysuit booties.

Depending on whether I'm diving single tank, doubles, sidemount, or CCR, I choose my fins accordingly.

Wing shape also affects trim. I have had wings that made me head heavy and wings that keep me in trim with no extra weight, with all other factors equal.

My rEvo has a Nomad XT wing on it. I generally use no weight at all in fresh water or in a thinner wetsuit and I still get flat trim. In salt water, with a 5mm, I put a 4# soft weight right in the middle of the unit. My rEvo buddies all have stock rEvo wings and they all use some weight at the top of their units. I think the Nomad wing shape is what keeps me from being tail heavy.

Not sure if the Prism will let you use other wings, but that might be another option for "fixing" your trim.