08-28-2018, 12:16 PM
|
#41 (permalink)
|
|
EcoModding Apprentice
Join Date: May 2008
Location: N. Saskatchewan, CA
Posts: 1,805
Thanks: 91
Thanked 459 Times in 327 Posts
|
It is easier to trade for a sailboat than to get a planing hull to sail well. I have seen a few small yachts converted to fishing, and they do have efficient hulls. A catamaran might be the preferred type, or a monohull with a daggerboard so you can lose the keel drag when it isn't needed.
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
08-28-2018, 12:19 PM
|
#42 (permalink)
|
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,571
Thanks: 0
Thanked 1,627 Times in 1,452 Posts
|
Quote:
Originally Posted by vxhatch
buy a newer motor, consider the evinrude DFI 2-stroke E-TEC line, they are lighter than 4-strokes and get equivalent, if not better FE
|
Their FE is often claimed to be better than 4-strokes. Well, at least it used to be when most 4-strokes still relied on carburettors... |
|
|
|
|
08-28-2018, 03:40 PM
|
#43 (permalink)
|
|
Diesel Trucker
Join Date: Apr 2012
Location: Aspers, PA
Posts: 35
JD - '04 Dodge Ram 2500 QCLB 4x4 SLT Last 3: 18.93 mpg (US)
Thanks: 17
Thanked 22 Times in 13 Posts
|
Quote:
Originally Posted by Angel And The Wolf
What's a boat?
|
Hole in the water you pour money into. 
__________________
Bob,
Dodge Ram '04.5, 2500 HO, Auto, QCLB, 4x4, CAI, 4" turbo back, Smarty Jr, Airdog 100. So Far
Previous; Dodge Ram '03, 3500, QCLB, 4x4, Dually, RIP
|
|
|
|
|
08-28-2018, 05:26 PM
|
#44 (permalink)
|
|
EV OR DIESEL
Join Date: Dec 2007
Location: South Louisiana
Posts: 1,758
Thanks: 57
Thanked 113 Times in 86 Posts
|
Quote:
Originally Posted by rdefayette
Hole in the water you pour money into. |
Actually, my experience is BOAT stands for “Bust Out Another Thousand” . Which means that I’m getting off cheaper than most.
__________________
2016 Tesla Model X
2022 Sprinter
Gone 2012 Tesla Model S P85
Gone 2013 Nissan LEAF SV
2012 Nissan LEAF SV
6 speed ALH TDI Swapped in to a 2003 Jetta Wagon
|
|
|
|
|
08-28-2018, 05:32 PM
|
#45 (permalink)
|
|
Vixen21, Smart fortwo cdi
Join Date: Jul 2016
Location: Toddville, Iowa
Posts: 6
Thanks: 0
Thanked 1 Time in 1 Post
|
Hull design stability vs speed/efficency
Hull design:
The big trade off in kayaks is stability, versus speed/efficiency.
Sea Kayaks with long slender hulls follow same rules as a wind tunnel.. cut your water path and release it slowly.
Kayakers are loose in the hips, letting the kayak wobble as the upper torso stays squared with water horizon.
If you mount a small diesel engine on a Sea Kayak and keep it at peak torque rpm you may experience amazing Mpg. Or you might flip and drowned!
Jack
|
|
|
|
|
08-28-2018, 07:45 PM
|
#46 (permalink)
|
|
EV OR DIESEL
Join Date: Dec 2007
Location: South Louisiana
Posts: 1,758
Thanks: 57
Thanked 113 Times in 86 Posts
|
I’d say if your going as efficient as a Kayak just go ahead and go electric. Trolling motors are often free, or do something with higher speed if you are so inclined.
__________________
2016 Tesla Model X
2022 Sprinter
Gone 2012 Tesla Model S P85
Gone 2013 Nissan LEAF SV
2012 Nissan LEAF SV
6 speed ALH TDI Swapped in to a 2003 Jetta Wagon
|
|
|
|
|
08-29-2018, 07:42 AM
|
#47 (permalink)
|
|
Vixen21, Smart fortwo cdi
Join Date: Jul 2016
Location: Toddville, Iowa
Posts: 6
Thanks: 0
Thanked 1 Time in 1 Post
|
For a Kayak ,an electric motor might be a good idea!
12 V lithium ion battery packs are light weight and Powerfull.
|
|
|
|
|
08-29-2018, 01:06 PM
|
#48 (permalink)
|
|
EcoModding Lurker
Join Date: May 2017
Location: Watsonville ca
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
|
FE for a boat
I had a 18 ft aluminum boat full top with a 60 horse four stroke fuel injected motor
I could put 5 gallons of gas in the boat and troll all day
|
|
|
|
|
08-29-2018, 11:12 PM
|
#49 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,703
Thanks: 7,777
Thanked 8,586 Times in 7,070 Posts
|
Quote:
I had a 18 ft aluminum boat full top with a 60 horse four stroke fuel injected motor
I could put 5 gallons of gas in the boat and troll all day
|
You might get a few bites with that.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
."We're deeply sorry." -- Pfizer
|
|
|
|
|
08-31-2018, 04:27 PM
|
#50 (permalink)
|
|
Master EcoModder
Join Date: Feb 2014
Location: Missoula, MT
Posts: 2,653
Thanks: 301
Thanked 1,178 Times in 807 Posts
|
Quote:
Originally Posted by euromodder
Got a picture ?
Google turns up some really squarish shallow draft boats
A newer engine will likely get you better mileage
Clean the hull
Paint & polish it really smooth & glossy
Add "stern plates"
Dunno what they are really called, but they are plates added aft of the stern, along the underside of the hull, and extend the apparent length of the hull
Increase the fineness ratio: make it longer, or narrower |
I just learned why warships have always had a squared off stern. The tapered would be more efficient but the square is faster and efficiency isn't as big of a concern. That square creates a high pressure area where the prop is giving it more bite and less cavitation. Therefore a little more top speed at the expense of less efficient.
|
|
|
|
|
The Following User Says Thank You to Hersbird For This Useful Post:
|
|
|
