Maritimo build

[wolf IV]

your right they must sound nuts dont get me wrong twins are great but would that be the same as a turbo 4 cylinder beating a v8 in a drag race half the liters and cylinders?

its more for the scale look .as well as the power & sound. This was my first twin and its so rewarding to hear her and see her twin roosts!!

[Brushless55]

its more for the scale look .as well as the power & sound. This was my first twin and its so rewarding to hear her and see her twin roosts!!

I agree!
great job on your build..

[domwilson]

How about some detonged X447's cut down to 45 mm? Do you think the amp draw would be too high?

[wolf IV]

i agree!
Great job on your build..

thanx bud!! Get'n' her wet 6am !!!! 30c's gonna pre heat batts and see what she will do.. Oh i also installed two fans for some air flow onto the esc's...i have a good feeling about the new set up!

[wolf IV]

How about some detonged X447's cut down to 45 mm? Do you think the amp draw would be too high?

I ASUME YOUR TALKING TO ME..? IM RUNNING 442'S AND AMP DRAW IS IM GUESSING AROUND 180-210 CONST. IF THE HI MODELS ARE TRUELY RATED AT 200 AMPS-GUESSING FROM THE HEAT .. ILL CHECK AND DOCUMENT THE HEAT ON EVERYTHING TOMAROW AS WELL AS RUN TIME AND SPEED. IF ALL GOES WELL ILL TRY AND POST A NEW VIDEO NEXT TIME AROUND....

[domwilson]

I ASUME YOUR TALKING TO ME..? IM RUNNING 442'S AND AMP DRAW IS IM GUESSING AROUND 180-210 CONST. IF THE HI MODELS ARE TRUELY RATED AT 200 AMPS-GUESSING FROM THE HEAT .. ILL CHECK AND DOCUMENT THE HEAT ON EVERYTHING TOMAROW AS WELL AS RUN TIME AND SPEED. IF ALL GOES WELL ILL TRY AND POST A NEW VIDEO NEXT TIME AROUND....

Yep. I was thinking the detongue might lower your amp draw and allow the props to spin faster with the larger diameter for increased speed.

[wolf IV]

Well id like the higher speeds !!!but im not sure detounging those would be eneph .. If someone else chimes id forsure try that!!!

[wolf IV]

Or i could just take your word for it and have egneg do some up for me!!!

[domwilson]

http://www.rcprops.com/TechNotes/rcprop_tech_info.htm

______The Benefits of Removing the Tongue Area of a Prop______

Removing the tongue will reduce lift and increase low end rpm's. By removing the leading edge tongue area, it's more likely to slip at the low rpm launch, however at higher rpm and speed the tongue causes drag. Because the centrifugal force of the rotating prop at speed, throws the water away from the hub and tongue, towards the outer surface of the blades. This is why removing the tongue, generally increases rpm and top speed. I think this is important to understand. Also the tongue area has the lowest amount of pitch, which also adds drag at high rpm.

[domwilson]

http://www.rcboat.com/prop.htm

[wolf IV]

http://www.rcprops.com/TechNotes/rcprop_tech_info.htm

______The Benefits of Removing the Tongue Area of a Prop______

Removing the tongue will reduce lift and increase low end rpm's. By removing the leading edge tongue area, it's more likely to slip at the low rpm launch, however at higher rpm and speed the tongue causes drag. Because the centrifugal force of the rotating prop at speed, throws the water away from the hub and tongue, towards the outer surface of the blades. This is why removing the tongue, generally increases rpm and top speed. I think this is important to understand. Also the tongue area has the lowest amount of pitch, which also adds drag at high rpm.

great info!! i new the basic ideas but didnt think about how it would reduce amp draw even while going up in dia.. ill give egneg a shout, thanks!!!

[wolf IV]

by the way the 442's are back cut (egneg)...

[domwilson]

Just post some video. How's that Elam coming along?

[wolf IV]

Just post some video. How's that Elam coming along?

i took abreak from her.. ive lost two motors and two esc's.. ill get her rollin in a little while!! ive been messing with upgrades on my edf jets lately. she'll get wet soon !!!ill set up a video tomarow for you! should i have the 447's back cut as well?

[egneg]

The 442's were detongued but not back cut. If you are pulling 200a now 447's (cut down to 445, detongued, and back cut) might let the magic smoke out ... but there is only one way to find out.