Hydroplane

The Thought du Jour is: Why not stick a hydroplane on my high-speed electric kayak? This would slightly decrease the wetted hull but it would add theoretic stability which is better than nothing. The question is where to put the wing? The math is simple enough as long as you avoid variables like waves, spray, reflected spray, wind, load-shift junk in the water, hull flexing, turning, clapotis and hail. Where to put the wing? Eh?

Hydraulic Formulas

Hydraulic Pump Formulas

Formula For:	Word Formula:		Letter Formula:
PUMP OUTLET FLOW in Gallons/Minute	FLOW = RPM x PUMP DISPLACEMENT(Cu. In./Rev.) 231		Q = nd 231
PUMP INPUT POWER in Horsepower Required	HORSEPOWER INPUT = FLOW RATE OUTPUT(GPM) x PRESSURE(PSIG) 1714 x EFFICIENCY(Overall)		HP = QP or 1714 Eff GPM x PSIG 1714 Eff
PUMP EFFICIENCY OVERALL IN PERCENT	OVERALL EFFICIENCY (%) = OUTPUT HORSEPOWER x 100 INPUT HORSEPOWER		EffOV. = HPOUT x 100 HPIN
	OVERALL EFFICIENCY (%) = VOLUMETRIC Eff. x MECHANICAL Eff.		EffOV. = EffVOL x EffMECH
PUMP EFFICIENCY VOLUMETRIC IN PERCENT	VOLUMETRIC EFFICIENCY (%) = ACTUAL FLOW RATE OUTPUT(GPM) x 100 THEORETICAL FLOW RATE OUTPUT(GPM)		EffVOL = QACT. x 100 QTHEO.
PUMP EFFICIENCY MECHANICAL IN PERCENT	MECHANICAL EFFICIENCY (%) = THEORETICAL TORQUE TO DRIVE x 100 ACTUAL TORQUE TO DRIVE		EffMECH = TTHEO. x 100 TACT.
PUMP DISPLACEMENT IN CUBIC INCHES/REVOLUTION	DISPLACEMENT = FLOW RATE(GPM) x 231 PUMP RPM		CIPR = GPM x 231 RPM
PUMP TORQUE IN INCH POUNDS	TORQUE = HORSEPOWER x 63025 RPM		T = 63025 HP RPM
PUMP TORQUE IN INCH POUNDS	TORQUE = PRESSURE(PSIG) x PUMP DISPLACEMENT(CIPR) 2 x 3.14		T = PSIG d 2 x 3.14 or T = Pd 2 x 3.14
PUMP LIFE B10 BEARING LIFE	B10 HOURS OF BEARING LIFE = RATED LIFE HOURS x RATED SPEED(RPM) x (RATED PRESSURE(PSIG))3 NEW SPEED(RPM) (NEW PRESSURE(PSIG))3		B10 = RATED HRS. x RPMr x (P r)3 RPMn (P n)3

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Major Carp Die-Offs

We are experiencing huge die-offs of large carp. These fish are not native to this Hemisphere. They are not good for eating and they are destructive to the natural habitat. They have overpopulated many small lakes and estuaries. Now they are dying of Viral infections and washing ashore by the thousands. Our Governments have cut back our Ministry of Natural Resources to the point where it is incapable of any real action. This is a disgusting situation. It can only get worse.

Fishing Derby

For those who fish: here is a list of what you might find on the end of your' line, courtesy of the Ministry of Natural Resources (without whom there would be not much to catch).

Friday Night Picknick

Anyone interested in joining us for a Kayak Picnic on Friday Night: we will be at the beach at the boat launch on the spit at the bottom of WestShore at 7:00. Bring something to eat/drink. All kayakers are welcome. It is a nice way to avoid traffic on Friday Night.

Sailing

When Ian and I went out the lake was flat, the sky was blue and the wind was a breeze from the South, just enough to sail. The wind moved to the west and picked-up so we were really sailing, trimming the sails as flat as possible. We were getting speed and heel. Then we were really moving and an Anvil-Cloud turned the sky black. We were heeling, dumping wind on the wave-tops feeling the thrill of the G-Force. Then we were knocked on to our beam-ends against a ton of cast iron keel. I was standing on the lee-rail watching the jib hit the water. I put the tiller hard over. We turned down the face of a wave and came-up into the wind. Ian struck the sails.We struggled to keep her in Irons until we could safely reef. Then the wind went North. Typical Lake Ontario.

Canoes

Two canoes of interest are in the works: One designed and in fabrication by Harold Potts, a Marine Engineer who currently occupies my former shop at Frenchman's Bay Marina, and one being built in the skin-on-frame tradition by my friend James at my shop at 1414 Old Forest Road. They are both using the finest straight grain clear Ash from up north. Harold's design is engineered to the n'th degree of precision and is strong enough to withstand thrusts that would easily kill any occupants. James' canoe will be a traditional Canadian design with light rocker and a moderate sheer. It will be a light-weight two person tripping canoe. Harold's canoe will be an indestructible solo canoe, a masterpiece of innovative skin-on-frame engineering.
I am also rebuilding a Kevlar Prospector. That would be easy but for four Kevlar patches on the keel applied with cheap resin. When I sand the patches the resin melts away leaving tufts of the stronger Kevlar. I have to re-coat with harder resin, sand again with fine paper and repeat.