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Marinize an aero ESC with a TicTac box some epoxy Aluminium tube and hot glue

catamaran, esc, jet drive, marine, scratch build, tunnel hull Commenti disabilitati su Marinize an aero ESC with a TicTac box some epoxy Aluminium tube and hot glue 

Marinize an aero ESC with a TicTac box some epoxy Aluminium tube and hot glue

Hobbyking SS Series 60-70A ESC




The Hobbyking SS series comes with a limited range of programming functions and are designed to be plug-n-play.
A perfect ESC for those looking for something simple to use and economic.

Spec.
Weight: 63g
Size: 55x35x8mm
Cells: 12-24Ni MH ~ 4-8S Li Po
Max Current: 60A
Burst : 70A
No BEC
Timing: 1/7/15/30 programmable
PWM: 8/16K
Features.
Constant current 60A Max 70A
Li-Poly 4-8 cells
Low Resistant 0.0017 Ohms;
Dynamic Braking
BEC: opto
Auto shut down when lose signal
Slow down at 3.0V per cell Lipo, Cut-off at 2.9V per cell Lipo 0.8V NiMh
User Programming options.Battery setting
Throttle Range
Brake setting 4 options: Direction and Cutoff Type
Timing Mode Setting: 1 / 7 / 15 / 30
PWM setting: 8K/16K

Marinize an aero ESC with a TicTac box some epoxy Aluminium tube and hot glue. A nice water tank directly on the heatsink over the FET's lots of volume flow seems more than adequate  Its epoxied on with hot glue over that to seal any holes.


My plan is to use this ESC on theis motor





It don't have much specification on HK's site but my understanding is it a 
2185KV 28mm diameter ,33mm length with a 3.17mm shaft weight 230g  I got the 32 mm prop too.


Looks like a nice quality device seems to have great reviews on HK's site


 Its air tight and if it get hot enough to melt the hot glue its probably toast in any case



Lug
30

Time for a full size scratch build 9 foot catamaran runabout

catamaran, runabout, scratch build, tunnel hull Commenti disabilitati su Time for a full size scratch build 9 foot catamaran runabout 


A recent purchase of a 5hp Mercury as a wing engine for Buttercup has re-kindled my desire to build a runabout catamaran design I have had in mind for a while now.


9 ft long by 4ft 6" beam in thin ply just to hold the shape then fiberglass sheathed on the outside and a full layup in side. 



The above mockup has been around now a couple of years. A feature of the design is two of the bottom panels have one completely straight edge.
I have a 4 foot mockup in the same proportions 2:1 length to beam with the hulls an tunnel one third of the beam.  The tunnel should make the hull very stiff longitudinally, and a bulkhead one third of the length near the bow make the cardboard mock up very stiff torsionally. 







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