Raise namba voltage limits, please: 10s lipo max is not good enough

[JIM MARCUM]

I have read several threads that mention running 12S LIPOs in SAW races. Both 11S and 12S are illegal for NAMBA races. NAMBA Section 28 currently limits T class maximum voltage to 40 Volts AND a maximum capacity of 12,000 mAh. In LIPO talk, that means a MAX of 10S. Not sure, but I think a max of 12,000 mAh would limit you to (2) 6,000mAh LIPOs - 2P.

I would like to see the NAMBA T class limits raised to 44.4V (12S) and max capacity of at least 24,000 mAh for 12S3P. If you agree, please get your clubs & diistrict leaders to petition NAMBA for this proposed rule change.

What do you think?

THX, JIM

[carlcisneros]

i could see 12s2p not 3p Way too much weight inmy opinion is all.
thats just me thinkin out loud LOL

[Fluid]

Way too much weight inmy opinion is all.

Not for a 72" mono it isn't - might as well go for the whole enchilada at once. Clearly you guys have not been involved with rule changes before. Having clubs "petition NAMBA" for a change isn't the way it works. Typically, rules like this are changed once one or more clubs actually races the proposed class for at least one year. Then if it "works" there is a vote for a rule change. It isn't simple - thank goodness. Good luck.


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[RandyatBBY]

Not for a 72" mono it isn't - might as well go for the whole enchilada at once. Clearly you guys have not been involved with rule changes before. Having clubs "petition NAMBA" for a change isn't the way it works. Typically, rules like this are changed once one or more clubs actually races the proposed class for at least one year. Then if it "works" there is a vote for a rule change. It isn't simple - thank goodness. Good luck.


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The problem with this way of doing things is that. If a club races more than 10S we are not covered with our insurance. Not that I want to do it but other people do.

[JIM MARCUM]

I don't know the terms of our NAMBA insurance, but why would any provider care about a 4.4 Volt increase? It's worth asking isn't? JIM

[Fluid]

You can ask the provider why, and good luck. Randy's point is good, a catch 22. You could try joining the AMA, their insurance covers higher voltage - but there is an economic reason for that. There are an order off magnitude (or two) between the membership of NAMBA or IMPBA and the AMA. That's a much larger revenue base to draw upon to pay claims. Too, there may be no limit to the size of an airplane in AMA, I've seen some with 15' wingspans....


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[RaceMechaniX]

It's complicated, but in short our coverage (NAMBA) is based on what we are asking to cover. In this case a T class boat is a maximum 60" and 37V nominal with a capacity no greater than 10,000mAh. Nitro and gas have similar caps, such as 35cc gas single, 52cc gas twin and 30cc max nitro twin. All have a 60" length cap. If we wanted 12S3P or even higher it's logical our insurance would go up. And for reference, about 70% of our yearly membership goes to insurance. The speed and possible injuries incurred by a 90" 50hp electric boat or any large scale boat (twin turbine cat's come to mind) can be much more serious.

You can propose a rule change to up the voltage or perhaps make a new class, but this has to be voted on by all NAMBA members and along with this en estimate of insurance and hence membership dues should accompany the vote.

A short term solution is to join AMA to be covered which I strongly suggest to anyone using a model boat outside IMPBA or NAMBA coverage.

Tyler