Choosing a DPV

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Dont_Hold_Your_Breath

Contributor
Messages
103
Reaction score
23
Location
Boston, MA
# of dives
50 - 99
Looking for a scooter to use in cold water for a project photographing fish. Water temps are ~50F for 6-8 hours but I can stop and switch out battery packs in the middle if needed. Also looking for something that will allow me to cover some ground and scout a lot of area so duration and speed would be nice but I don't have a sense of what speed is for a DPV by just looking at speeds online. Some DPV use will be on the surface snorkling, some of it will be with a CCR but always in less than 40ft of water.

I work with electronics for my profession and can build almost anything including my own lithium battery packs but looking to find something in the next couple weeks for a project. Would like to stay around $2k if possible. If you were to buy new what would you get in that price range and if you were to buy used what would you get? As mentioned, If there’s a solid older system with a bad battery that could definitely work for me. Hoping to get some help jumpstarting my search for a DPV. Thanks!
 
Even Building your own battery you'll be hard pressed to make those durations work at $2k.

New is out of the question as youll be minimum 3k with maybe a 2hr runtime. Look into an older Used scooter, If you can be slower shoot for a DiveXtras Sierra. (I have a couple I need to offload) With a 1080wh battery you might be somewhere in your runtime range but still would be a looking at a small recharge in the middle.

Bump a little higher in price and youll be looking for a DiveXtras Cuda or a Silent Submerge Viper or Magnus.

Typical Diver on CCR cruising at 150fpm (standard Cruise speed for DPVs) youll be floating in the 200-300W power range depending on trim an drag...
 
If you're looking for a cheap scooter with a long run time then the Dive Xtras BlackTip Tech might be a good option. They're not the most reliable but they do work well enough for shallow dives.

 
Looking for a scooter to use in cold water for a project photographing fish. Water temps are ~50F for 6-8 hours but I can stop and switch out battery packs in the middle if needed. Also looking for something that will allow me to cover some ground and scout a lot of area so duration and speed would be nice but I don't have a sense of what speed is for a DPV by just looking at speeds online. Some DPV use will be on the surface snorkling, some of it will be with a CCR but always in less than 40ft of water.

I work with electronics for my profession and can build almost anything including my own lithium battery packs but looking to find something in the next couple weeks for a project. Would like to stay around $2k if possible. If you were to buy new what would you get in that price range and if you were to buy used what would you get? As mentioned, If there’s a solid older system with a bad battery that could definitely work for me. Hoping to get some help jumpstarting my search for a DPV. Thanks!
$2k is wildly unrealistic, especially for a "6 hour battery" whether that is 6 hours in one pack or 2x 3hr batteries. Even if you picked up a short Gavin and tried converting it to li-ion you are looking at 800-1000wh even for a sedate speed. That will be $1200-1500 in batteries alone, some sort of bracket to hold the pack in the hull, lead to compensate for all the extra air in the tube, nevermind a $150+ BMS, and a decent charger. That's all just conversion parts on top of the old Gavin hull and motor - assuming the brush board is already upgraded so it doesn't melt on you.
 
$2k range you are looking at a nice scooter that will need work (probably needing a whole new battery) and that will blow the $2k budget. Or a Blacktip will fill that spot. You might get a used Blacktip ready to roll for $2k, if not $3k for new and new batteries to go with it.

I'm confused by the 6-8 hour time frame that has the option for a battery change halfway through?
 

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