So I have been taking forever to get my build going! I started in April 2017 at the same time Pacificmeister did, but a number of things have got in the way and as a result it is not close to completion yet! I have decided however that I will start documenting it here as well so that some can see what I have done.
I decided to to go a different parts route to what seems to be the standard for the DIY builds.
Battery: 8S - 12S (depending on what config I like and can handle)
Power Meter: Banggood 150A (may leave it off)
ESC: Hobbyking Yep 120A (I know its a gamble, but figure why not if I add better heatsinks)
Motor: SSS 5684 750Kv (capable of a max of 8Kw)
Gearbox: Torqeedo 1008 (Made by Neugart and seems to have a ratio around 8:1)
Board: Old windsurfer (cut and adapted)
Foil Mast: Slingshot Hoverglide (I pulled the plastic inserts out)
Foil Fuselage and Wings: Unifoil Kite Foil (friends have ridden it and loved it and I got a deal)
I have sealed the drive unit and tested it (not in water) and all seems good. I now need to shorten the mast a bit (I got the 35 inch one) and laminate the board and compartments (this is holding me up as the UK is not hot enough and I dont have a space to work in). Hopefully I will have finished up in the next month or two
I designed a 10mm spacer that sits between the gear and motor and connects to it. I then brought down the motor shaft to 6mm so that the pinion would fit.
Intersting way with that torquedo spare part. The price for the gear is ok and it’s in stock: Gearbox TXX3 - Torqeedo
The problem seems to be the connecting pinion, it seems they changed the design and its now integrated in the rotor: Motor Bell T1003 II - Torqeedo
If the pinion could be machined directly onto the rotor of the SSS motor, it would be quite an elegant and short solution, but not cheap…
if used with 12s, 750 KV, the max output speed would be 50 x 750 / 8 = 4688 idle → x 0.7 under load =3280 rpm. Not too bad as the max output speed of the 1003 is 1200 rpm: TRAVEL 1003 CS Electric Outboard Motor / Short Shaft | SVB
Any idea on how to connect the Motor without the pinion as a spare part?
Just contacted their European support center. They answered that parts that are not available in their online shop need to be ordered through their service partners, so I have to find one nearby…
I honestly cant remember the length of it (and can’t measure as the housing is now all sealed up), but it is 10mm in width. I should be able to work it out from my drawings when I get a chance…
