What size or how many mAh

[oscarel]

Craig, P classes are 11.10 - 16.92 V. 10,000 mah max and hull is max 34” with the p-limited's having to have an approved motor that I posted above. The rule book is here. The class we're discussing here is the P-Limited Sport class. The guys down in HOTMBC race them quite a bit.

And sorry, T.S. Davis is right about the sport class rules for NAMBA.

[T.S.Davis]

We bang out about 50 heats a year of spec sport up here.

Hope those HOTMBC guys are okay with the Harvey mess.

[Fluid]

The Zelos motor is very large and retails for over $200, it is not at all suited for a 31" Hydro. I suspect that the OP transposed 1500 to 1050. He will have to read what is printed on his motor and report back.

To answer his question, for a limited setup in a one-mile heat race he can safely run 4000 mAh packs. Less might work okay, but to save stress on the packs and to allow running a penalty lap safely I would still recommend 4000. FWIW my limited boats use between 2500 and 3200 mAh during a heat.



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[oscarel]

We bang out about 50 heats a year of spec sport up here.

Hope those HOTMBC guys are okay with the Harvey mess.

I've chatted with a few and so far everyone is safe and drying out. I've seen Jay's posts on facebook and he looks to be ok as well.

[T.S.Davis]

Typing a lot. Sorry guys.

There are some great options from the ABC line of props but they're virtually impossible to get unless you buy from one of the tuner guys. They'll sell you raw but that kind of defeats the purpose for them.

[T.S.Davis]

To answer his question, for a limited setup in a one-mile heat race he can safely run 4000 mAh packs. Less might work okay, but to save stress on the packs and to allow running a penalty lap safely I would still recommend 4000. FWIW my limited boats use between 2500 and 3200 mAh during a heat.

Great, Jay is alive!

If he runs with us he wont have to do an extra lap unless he has 3 cuts in a row or jumps the start. We're IMPBA. 50 points per cut.

We did recently start doing a cool down lap though. Which I swore I would never ever do........ever....but I think it's actually working better for us. Guys actually get their crap off the water in a timely manner.

The lowest mah I have seen work on our course was 4400mah. Comes in with 17% in the tank. A little tight but it works.

[Fluid]

We bang out about 50 heats a year of spec sport up here. Hope those HOTMBC guys are okay with the Harvey mess.

Terry, AFAIK we are all okay. Some are stranded, some have limited power but so far okay. But it isnt over, more flooding is expected from swollen rivers draining into the region. Our race this Saturday is cancelled.

The Vortex is a legal boat in both organizations. Mine measured 33.5 using the box method. It has plenty of lift so it may make a decent Limited hull. I only ran mine full-P.

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[Fluid]

Great, Jay is alive!......The lowest mah I have seen work on our course was 4400mah. Comes in with 17% in the tank. A little tight but it works.

Y'all must be really pulling the amps using 3500+ mAh in a six lap race. I only run 5000s but some members run 4000/4400 packs with success. In the Vortex there is no reason not to run 5000 mAh packs.


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[oscarel]

Terry, AFAIK we are all okay. Some are stranded, some have limited power but so far okay. But it isnt over, more flooding is expected from swollen rivers draining into the region. Our race this Saturday is cancelled.

The Vortex is a legal boat in both organizations. Mine measured 33.5 using the box method. It has plenty of lift so it may make a decent Limited hull. I only ran mine full-P.

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Jay, good to see you're all ok.

[CraigP]

P limited sport by NAMBA rules is/are a 34" full bodied hydro, 4s batteries with up to 10k mah, and a motor from the list.

There are dimensional limitations on a sport but I'm 99% certain the Vortex meets them. Not sure about the length though. Is it truly 34"? I can't remember. Haven't seen one in a couple years.

Man, that filled up fast! Yes, good to hear from Houston guys. My CEO lives there and he reports it's a mess! Anyway, Terry, the Vortex is 33.75" as measured on the hull. Does the strut come into play on overall length? I'm thinking of building an ML boat for the class. The Vortex was built for 8s and is an R&D boat. I think to race, you need a light little mosquito to get at it! The Vortex is heavy, with sponson mods, about 10.5lbs. I appreciate all the answers, thanks guys...

[CraigP]

And sorry, T.S. Davis is right about the sport class rules for NAMBA.

Thanks Oscar, I'll give it a read... pretty sure the Vortex won't have the power to compete, it's too heavy. Thinking about an ML boat like you have, make it super light and see if I can keep it on the water. As Jay points out, you want enough battery to compete. Putting in more mah than you need is just adding weight. So that will be a whole new learning curve. I'm collecting some good power data, maybe I can put it to use other than business.

[oscarel]

Thanks Oscar, I'll give it a read... pretty sure the Vortex won't have the power to compete, it's too heavy. Thinking about an ML boat like you have, make it super light and see if I can keep it on the water. As Jay points out, you want enough battery to compete. Putting in more mah than you need is just adding weight. So that will be a whole new learning curve. I'm collecting some good power data, maybe I can put it to use other than business.

That was a Blazer 40 sized whiplash I had. And it's heavy and a 36" 6s boat. Just enough to finish is what's normally best. Also remember that here in Texas we normally don't get ideal weather conditions for racing, so a little on the heavy side also isn't a bad idea.

[CraigP]

Got it... thanks!

[NativePaul]

Nice, I shudder to think of you hitting someone with those metal sponsons.

[ray schrauwen]

Great, Jay is alive!

If he runs with us he wont have to do an extra lap unless he has 3 cuts in a row or jumps the start. We're IMPBA. 50 points per cut.

We did recently start doing a cool down lap though. Which I swore I would never ever do........ever....but I think it's actually working better for us. Guys actually get their crap off the water in a timely manner.

The lowest mah I have seen work on our course was 4400mah. Comes in with 17% in the tank. A little tight but it works.

I do appreciate this information too. I've been benched for two years so, it's nice to know.

I swear as soon as this shovel nose is done I'm going into high gear building finally. I'll never build a boat for someone else again.