First rigger to build for impba p (4s) or Q(6s)

[Eriel Garrastegui]

Eriel, something to think about........in model boat heat racing it is seldom that the fastest boat wins the race..........gotta do all 6 laps to get the points.......!

It's all about the driver

 

[Milner]

I'll chime in on the rules discussion.

I think the current hull length rules are the right approach for the electric classes. Whether it was intended or not, it's a brilliant way to keep electric classes from being a constant electrical arms race. It's also something that's very easy to tech (as opposed to battery capacity or motor winds).

If the boats are on the verge of being overpowered with a range of readily available power systems people don't have to constantly chase better motors, batteries and escs. As it stands, just about everyone has plenty of power for the size of the boat and races come down to setup, driving and luck....as it should be, IMO. For example, allow P boats to be any length and we're right back chasing the best batteries, motors and ESC's (more $$$$) which will be evolving monthly. That's when it's expensive in time and $$$$ to stay at pointy end of the pack, then participation falls off.

 

[Grimracer]

Length is likely the only thing that will ever control, or at a minimum, slow the killing..

If it does not stay on the water.. well.. you are not going to win very easy are ya.... just a fact. The run away cost to be competitive will also slow.

FE boats have went over the dam, power, (speed) is now WAY easer than handing, so.. to fix this.. I just need a bigger boat.
Its is a band aid for more power.. when does it end.. at 1/2 scale hulls.. larger........

I no longer race FE boats and this is part of the reason why.

The power of an FE boat is intoxicating for sure... and some will NEVER let that go and just race the boat.

Grim

 

[LohringMiller]

The prop limitation rule has been used for years by ERCU for 1\7 and 1/10 scale electric boats. The 1/10 scale boats are limited to 50.8 mm and the 1/7 scale boats use Graupner K Series 57L two blade propellers or RCBoatbitz (CNC aluminum) 5514r two blade propellers. There are motor length, diameter, and KV limits, but no esc limits. I bet nothing burns up as long as an adequate ESC is used.

Lohring Miller

 

[Grimracer]

by SCALE those have a size limit... so the prop is a simple add in to the equation.

 

[LohringMiller]

That has nothing to do with scale, it's about current limitation and leveling the playing field. The NAMBA 1/8 scale rules specify a 57 mm diameter propeller and that rule was used by RCU for years along with motor limitations. I don't understand the resistance to this simple, zero cost limitation.

Power absorbed by a propeller varies as the FIFTH power of its diameter. The power absorbed also varies as the third power of the rpm. Rpm is controlled by specifying the voltage and motor KV. These two factors completely swamp all the first order effects of things like pitch and blade area.

I personally have destroyed lots of motors and high end ESCs. The ones in my 1/10 scale boat have lasted over 10 years.

Lohring Miller