Mean Machine Catamaran (Sport)

[DISAR]

As you understand unless you use a motor that it has been run and tested by someone and then by somebody else you will not get many answers to your questions.
Testing is the best thing you can do taking the risks ofcourse. My proposals are based on estimations and calculations and where you can start. Start with the smaller propeller and when everything is cool start going to bigger ones.

[sewerpit]

mr fluid

great info, maybe you can help me a bit with props, there are so many people using diff set ups with good results and it can get confusing . i will be running my mm with an 8xl ,hydra 120 esc on 4s2p what props should i be looking at for sport and then for speed thanks for your input MR.watts your input would be great too thanks

[calcagno45]

Mel: I would stick with the Octura X and M props. Those CNC props are pretty unchartered territories compared to the tried and true ability of the Octuras.
As far as the voltage cutoff on the Hydra, most people will set them anywhere from 3.0-3.3v per cell. Never go below that 3.0v per cell.

Sewerpit: I would try a X440 or X440/3 to start. Make sure everything is good and then start propping up. Another nice prop on the MM is the Y537/3. good speed and drops the amps.

[bustitup]

Hey thanks, what cutoff voltage should I set on hydra 240 if Im using 6s?with 12xl motor, can I reach 60mph on that?

Well on rc cars this how you figure it

There are 3,7 volts per cell so. A 6s lipo has 22.2 volts

So to figure cut off take the number of cells x 3.2 so in you case 3.2 x 6. = 19.2 would be the safe cut off

[Mel279]

Well on rc cars this how you figure it

There are 3,7 volts per cell so. A 6s lipo has 22.2 volts

So to figure cut off take the number of cells x 3.2 so in you case 3.2 x 6. = 19.2 would be the safe cut off

Hey bustitup, thanks for the info regarding the cut off

[Brushless55]

what speeds should a MM get using 4s on a 8XL ?
thanks, I love my MM !

[obrien]

my guess would be mid to upper 40mph range

[toysRme]

Guys, What rudder offset are you running with the speedmaster hardware???

Thanks!

Just got my hull from OSE and want to the same info???

intended setup
seaking 180A
Feiago 9xl
zippy 4s 5000 30c
x440
speedmaster hardware mono strut and 5.5 inch rudder

any input would be appreciated

[rawsonreyes]

new mm setup

hi guys the whole thread got some great setups but has anyone try the 580motors from steven. i have got an 90amps quickworldwide.com esc starts at 6s can this setup be eff, props x440/442/447 i do my own prop mods/ s/b/det also cupping. speedmaster strut/5"rudder.could this range give 50-60mph.rreyes.

[Scott T]

Just got my hull from OSE and want to the same info???

intended setup
seaking 180A
Feiago 9xl
zippy 4s 5000 30c
x440
speedmaster hardware mono strut and 5.5 inch rudder

any input would be appreciated

My rudder is just inside the edge of the right sponson. Seems to work very well. Pics in this thread - http://forums.offshoreelectrics.com/...ghlight=aussie

You should be able to bump up to an X442 and maybe even an M445 with that set up, but start with the X440 and see how she goes!

[Brushless55]

hi guys the whole thread got some great setups but has anyone try the 580motors from steven. i have got an 90amps quickworldwide.com esc starts at 6s can this setup be eff, props x440/442/447 i do my own prop mods/ s/b/det also cupping. speedmaster strut/5"rudder.could this range give 50-60mph.rreyes.

I think I saw a MM with a 580 and it was nuts!

[sailr]

Doesn't that depend on the esc? Some have cutoff set at the volts per cell, eg. 3.2V and some are set as a multiple of 3.2V X #of cells.

Well on rc cars this how you figure it

There are 3,7 volts per cell so. A 6s lipo has 22.2 volts

So to figure cut off take the number of cells x 3.2 so in you case 3.2 x 6. = 19.2 would be the safe cut off

[ozzie-crawl]

was asked for acouple pics of my MM setup, thought i mite as well put them here

[bustitup]

Doesn't that depend on the esc? Some have cutoff set at the volts per cell, eg. 3.2V and some are set as a multiple of 3.2V X #of cells.

I was referring to how to determine HOW to choose the voltage cut off you would choose if the esc gave you a bunch of options

for instance the castle link gives you a list of voltages to choose from....the formula i presented shows you how to choose the proper one

[eboat]

was asked for acouple pics of my MM setup, thought i mite as well put them here

Looks good but you should pull the shrink off the esc and water proof it (I have the same one and have seen one that got wet at a club race and melted)