Specs for jet with foil


#1

A jet with an optional foil is coming on the market in 2018.

www.esurftech.com

I am wondering how they will be able to combine a jet propulsion with a hydrofoil

They also released some specs

General
Size 2300 x 760 x 100 mm / 90 x 30 x 3.9 inch
Weight 26.7 kg / 59 lbs (w/ battery);
17.5 kg / 38.5 Ibs (w/o battery)
Maximum Speed 20 kph / 12.5 mph / 10.8 knots
Load Range ~ 100 kg / 220 lbs
Run Time 20 Min (@ Max. Speed)

Board
Type Inflatable
Material (Inner/Outer/Antiskid) Drop Stitch Fabric / PVC / EVA
Pressure 14 PSI

Engine
Rated Motor Power 2.8 KW
Rated Voltage 48.1V
Rated Current 58.2A
Motor Type Brushless DC Motor
Motor Speed 4650 rpm
Protections Overheating, overcurrent
Impeller Diameter 80 mm / 3.15 inch
Tube Diameter 81.2 mm / 3.20 inch
Flow Rate 32 l/s
Muzzle Speed 41 kph / 25.5 mph
eSurf S1 USER MANUAL 29 ENGLISH

Remote
Communication Type Wireless
Speed Control Stepless
Cell Battery Type CR2032
Cell Battery Life >100 Hr
Protection Grade IP67

Battery
Size 470 x 350 x 84 mm / 18.5 x 13.8 x 4.3 inch
Weight 9.5 kg / 20.5 lbs
Protection Grade IP67
Cell Type INR18650HP 2000mAh
Rated Capacity 20000mAh
Maximum Charge Voltage 54.6V
Minimum Discharging Voltage 36.4V
Rated Charging Current 3A
Rated Discharging Current 60A
Max. Continues Discharging Current 65A
Temperature (Charging) 0 ~ 45℃
Temperature (Discharging) -10 ~ 60℃
Humidity 65±20%RH
Storage Temperature -20 ~ 60℃(≤ 7 Days)
-20 ~ 40℃(≤ 3 Months)
-20 ~ 45℃(≤ 12 Months)
Cycle Life@ Capacity > 80% (100%
DOD)@25 OC
≥ 300 Cycle
Communication SMBus 2.0


#2

Yes thank you, all the details are here also: https://www.esurftech.com/img/support/eSurf_USER_MANUAL.pdf

Interesting with it having a foil, yet jet drive out the back of board… did they think about what happens once they lift out of the water onto foil and jet is sucking air? :slight_smile:


#3

I’m not sure they have thoughts that bit out yet!!!


#4

the foil is there just so the board doesn’t go down to much :grin:


#5

yeah foil is there for heavier people to aid the board in getting level. it will also provide easier control . no flight


#6

Well, I do believe that that thing is not going to float.

If trying to make it easy for beginners, first they should start with something that is over 100L.
It is going to be hard for someone to survive any wave on something that small.