Posts | Comments

Planet Arduino

Archive for the ‘2100kv heli motor’ Category


Its only a tiny water Pump but Its got an enormous flow

100A ESC, 2100kv heli motor, 2200mah, 6C, water cooling, water pump Commenti disabilitati su Its only a tiny water Pump but Its got an enormous flow 

Its only a tiny water Pump but Its got an enormous flow. Cooling pump for Yellow Boat 3 COuld be a candidate for a temperature sensor and current sensor to control the pump with a trusty Arduino nano. The pump motor draws 100mA on load.
Testing YB3 in the bath its totally mental on 6 cells 569 Watts flat out nearly emptied the bath should be amusing on the lake, that said at this power level it needs the motor cooling
Its made from an old servo motor motor a small brass impeller made from sheet brass and brass tube, soldered onto the pinion. The pinion is then secured with Locktight to the motor shaft. The shaft seal is from a non drip honey bottle glued on the end of the motor.The pump body is a part out of the top of a pump bottle soap dispenser, all held together with epoxy and Fiberglass.

The little pump shifts plenty of flow though the big pipes motor first them ESC a power test will be run to evaluate the performance of the cooling system, it seems to prime its self Ok. There is a rectangular scoop on the outside of the hull to help the flow when the boat is traveling. Having a pump means the temp won't overshoot after a fast run and stop like it would if it were only a scoop or tap from the jet unit nozzel.

Another tiny pump probably much more expensive than mine

The hull is 4 inches longer than Yellow Boat 1 the keel is fiberglass and epoxy as are the chines, everywhere else its hot glue. Much cleaner hull then the earlier boats but still a bit ugly.
These hulls are tough as, run them into rocks do what you like they just flex. I suppose they would fail at the seams when they do, that's why I glassed in the keel.The hull is all one piece of Coroplast split in the front sections and glued. I scored the folds with a ball point pen so they bend correctly, getting better with the material now.

The ride plate is glassed in on the inside so its really stiff, as the pump is all outboard I have recessed the transom to hide it away a bit. Its a big jet unit.

Room for 2 X 11.1V 2200mAh 20C batteries in parallel should deliver up to 80 + Amps
The cooling system is here

Turnigy 450 H2218 Brushless outrunner 2100KV with water cooling added, big bore pipes just because that the brass I had in stock. 

Model: 2218 
Turns: 6
Cells: 2~4S
Kv: 2100rpm/V
No load Current: 1.9A/10V
Max power: 500W
Weight: 67g
Shaft diameter: 3.17mm
Dimensions: 27.2 x 36.5mm
Recomended ESC: 2~4S/50A

Dragster exhausts :) for the cooling water I have fashioned a pump from some old junk which can bee seen here

Hobbyking SS Series 90-100A ESC with a water cooling plate added its an overrated ESC so should do the job easy. Will need a BEC I have a 5A in stock also.

Weight: 85g
Size: 70x50x13mm
Cells: 2-7S Li Po 
Max Current: 90A [over 70A use 6S only]
Burst : 100A

A real yellow boat

  • Newsletter

    Sign up for the PlanetArduino Newsletter, which delivers the most popular articles via e-mail to your inbox every week. Just fill in the information below and submit.

  • Like Us on Facebook