Hi fredy,
The boat is 52 " long , I have 75 mm props fitted, the two speed controllers are ones that I bought from eBay , the seller is called revolution shop, they cost £26.00 from china inc p+p , here is the spec from there eBay listing -Turborix Advance 50A Bi-directional Brushless Motor Speed Controller
(with forward and reverse motion control function)
Model Number : PESC0009
Specification: Current (A) : 50A
BEC : 3A
Neutral : FORWARD/BACKWARD RATIO SETTING: 70/30, 60/40, 50/50(default), 40/60, 30/70
Size : 62.30mm x 29.15mm x 15.39mm
Suitable Battery : LiPo (3-6 cells);NIHM (8-18 cells)
Weight : 45g
The motors are also from Ebay ( £26.00 inc p+p)-Brushless outrunner motor Emax BL4030 from the seller -hkp2ps2, they measure 40x30 mm and have a 6mm shaft.
Even though the spec for the speed controllers does not mention using lead acid batteries they work fine on it . I am using two 12v batteries in series delivering 24vollts to the controllers -1 volt over there limit so I have fitted a cooling an as they get hot and cut out on full power due to overheating.
How does it go then- IT IS EXTREAMLY FAST ,lifting right out of the water -very impresive !!!.
Paul