4s versus 6s and runtime

[NativePaul]

Erik I am not the best person to ask about races in mainland Europe as the worlds (Gent, Belgium 1-11 August) this year will be my first foreign event, I know the LiPoMasters in Moers, Germany, is pretty international but it was a couple of weeks ago, I guess most countries will have there own nationals many with an international contingent, ours was moved forwards to make way for the worlds but some may have moved back later in the season. I will ask around the frequent travellers at the next race.

[Brushless55]

So back to the original OP of the thread and not to boar this thread with smoke and mirrors

it is possible to get longer run times on 6s vs 4s like the original question asked..
specially with the same sized Mah packs....
and never figure runtimes with the math that takes lipo packs all the way down to 0% as damage most certainly will occur and you may not be able to finish a race with your boat out on the lake with empty packs.... or worse yet burnt packs with a burnt smelling hull and done racing for the day...

[Erik Aa]

Thank you Paul for your informative input and generosity. I appreciate it a lot. My exiga build is progressing, albeit slowly.
Kind regards,
Erik.

[Brushless55]

My exiga build is progressing, albeit slowly.
Kind regards,
Erik.

are you going to run the 4s setup?
that would be my choice with the bigger lipo
like to see this run when you are finished

[Erik Aa]

I'm setting it up to be competitive in Naviga racing. It will be run on 6s 4500 mah. I will run a 42 mm alu prop and 1400 kv initially. Will go up to 1700 kv eventually.
Regards,
Erik

[Brushless55]

Sounds good!

[urbs00007]

It's actually very close, but without knowing the current draw of the motor it is a toss up. Both configurations have roughly the same RPM, but I believe the single 6S pack will give you longer run times.
TG

considering the weight loss with 4-s compared to 6-s, does that make a difference for sport running?

[NativePaul]

There is no weight loss between the batteries being discussed here, 4s 6600mAh weighs the same as 6s 4500mAh, both are the highest capacity you can currently buy and stay under the 560g Mono2 battery weight limit.

[Erik Aa]

A small update on my 4500 mah 3+3=6S Aspecs. After winter storage all 3 of my 6S packs suffer from one cell with higher IR. It is really quite annoying. I try every time I charge to "after charge" the bad cell through the balance plug as Paul suggested in another thread, but it only works somewhat. It is a shame that one bad cell spoils an entire pack...

[Brushless55]

A small update on my 4500 mah 3+3=6S Aspecs. After winter storage all 3 of my 6S packs suffer from one cell with higher IR. It is really quite annoying. I try every time I charge to "after charge" the bad cell through the balance plug as Paul suggested in another thread, but it only works somewhat. It is a shame that one bad cell spoils an entire pack...

I agree, that's a bugger to happen while sitting in storage
I've had the same thing happen with a Giant Power/Dinogy pack