In need of run times for big/huge electric hulls

[5150WS6]

Thank you for all the posts and reply's. I know this is a tough topic because it's so situational. Water, props, throttle management, drive type.....so many variables. But this definitely gives me some hope that I'll be good to go for at least close to 10 minute run times I think. Time will tell for sure.

I just picked up the new Futaba 7PX and will be running temp, voltage and gps sensors so I can really get a live idea of run times and be able to monitor things closely......specifically battery voltage!

[WheelMan]

Subscribing to this one, as I am working on my own large v-hull electric build (70" CRC Marine Outerlimits). I have a build thread going here. Do you? If so I'd love to follow that as well.

I am actually hoping to get a maiden voyage done before freezing temps hit here in IL. If I succeed, I will report here what my run time was, just to chip in and possibly give you some additional info.

[MarkF]

Guys

I can also make 5s in 8000, 10,000 and 12,000 mah as well as the larger packs.

Mark

[meangenesracing]

Guys

I can also make 5s in 8000, 10,000 and 12,000 mah as well as the larger packs.

Mark

What's the dimension and weight of the 5s 10,000 mah packs?

[MarkF]

This is my 6s 65c version. https://www.dinogylipos.com/collecti...19079869497440
In 5s 65c it would be 1160g and 38x103x162
I also have a 5s 35c 11,000 mah 52x62x175mm 1125g

[seafreak]

fast large electric race boats

Hi, I belong to a race club called OMRA (offshore model racing association). https://omra.co.uk
we race large electric boats 1.45m (58 inches) offshore (on the sea) race duration 20 minutes, speeds over 50mph, checkout YOUTUBE,if you want any further info post me a message, Jonathan.

[WheelMan]

Mike,

I just completed a successful maiden run with my 70" CRC Outerlimits, built with a single Lehner 3080 motor, MGM 400amp ESC, running on 15S lipo (three 8000mah 5S packs connected in series). I got right at 10 solid minutes of run time out of it. There was only one full throttle pull in that session, but I averaged around 1/2 to 2/3 throttle a good portion of the time. Just wanted to share my findings, in case it helped you with your request here.

I do plan to double up on my packs in the future. Six 8000mah 5S packs, basically 3 pairs of packs each in parallel, but the 3 pairs in series to each other, for 16000mah worth of 15S power. That will be for next spring though. Right now I'm happy with the three packs run time.

[MarkF]

WheelMan

I can make you single 5s 16000 packs so you don't need so many packs.

[mmorias1]

Hey Mike i to am converting a big gas boat it is 54 in long it use to be a aquacraft v24 i chose a 500kv motor and am still in build mode i look forward to reading about your build good times for sure.Mike M.

[Punisher 67]

Just chiming in - I have a 57 Apache with a 11T Lehner 3080 - 477kv running a 12s 10,000 setup and I get just shy of 10 minutes of partial throttle & full throttle fun . Speed are about 50 mph . I have run it on a 14s setup also and came close to 60mph . It could definitely go faster but but the run time penalty is huge .

I see that Lehner now makes a 30100 motor

I want to extend a hello to Mark F & Mad Mike