Monday, April 30, 2018

[Electric Boats] Re: converting Haswing Osapian trolling motor to PWM

 

Oops. The prop is actually 11x6: APC 11060(1). Sorry.

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[Electric Boats] Re: converting Haswing Osapian trolling motor to PWM

 

This link to video works: https://www.flickr.com/gp/12769215@N06/Z26w17

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[Electric Boats] Re: converting Haswing Osapian trolling motor to PWM [1 Attachment]

 
[Attachment(s) from cpcanoesailor@yahoo.ca [electricboats] included below]

I tested a 12x6 propeller and spinner with the trolling motor. What a difference! For the same current draw, the boat goes 25% faster. I'm not seeing any cavitation at all from this prop. The stock 3 blade would cavitate occasionally. Mind you, this is at low speeds, but faster and easier than using the yuloh (sculling oar). Top speed tested was 3.8 knots at 12V, 35A.

The stock prop had a pitch of about 3.5, and was 9.5" diameter.

The new prop is a 12" diameter APC sport prop, which cost $5. The spinner cost $8.

With my 110W panel, which will provide >5A in full sun, I can run indefinitely at 1.5 knots, or more than 5 hours at 3 knots.

Geek phone vid: https://www.flickr.com/photos/12769215@N06/40902847425/in/album-72157672482672575/

I plan to build a fin around the pipe shaft to reduce turbulents. That should improve efficiency even more.

Curtis

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Attachment(s) from cpcanoesailor@yahoo.ca [electricboats] | View attachments on the web

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motorTesting.xlsx
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Friday, April 27, 2018

[Electric Boats] Perfect sailboat in Massachusetts for electric conversion - especially for someone with limited finances.

 

I was in the middle of converting my Tartan 27-2 to electric when a family health situation put a stop to it.

I've already removed the old rusty diesel and have cleaned out the engine bed. The old prop and prop shaft are still in place. The boat is ready for an easy electric installation.

The Tartan 27-2 is a quality cruising boat (do a search and you'll find plenty of info). The boat is in good condition although there are a few interior projects I haven't quite completed. The boat comes with a new high-performance cruising main, an older roller furling headsail in good condition and a genniker with sock in excellent condition. VHF radio, depth finder, [aluminum danforth style anchor] with chain and rode, other safety equipment, etc.

The boat is currently stored indoors at a great yard in SE Massachusetts that allows owners to do their own work and has its own launching facilities. The storage is paid for through the end of June.

What I can offer:

1.  I'm asking $3500 OBO for the boat but am willing to set up an installment plan if that helps you with the project (I really would love to see the boat become electric rather than just selling on open market to someone wanting a diesel or who would throw a gas outboard on the transom). If you can't complete the project before the end of June, then I'd just ask that you take over the storage costs at that point (It can stay indoors through the entire summer season for around $400 or so - I can double check the exact figure).
2. A couple of years ago, I installed a very simple electric system costing around $2500 (plus batteries and solar charging system) on a much larger boat and it worked very well for basic needs getting in and out of harbors, etc. It would perform even better on the Tartan. See www.electricauxiliary.com for details (The guy sells a very simple, minimalist system. He's the son of a Nobel Prize winning physicist and offers a viewpoint quite different from most of the companies offering much more expensive systems. It's an interesting read). If interested in that system, I could help/advise with the installation although my time would be limited. But the boat would be suitable for installing any of the systems on the market.

I'm hoping this will be an exciting opportunity from someone in the group.

Stephen





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Thursday, April 26, 2018

Re: [Electric Boats] Quite the potential project.. but is it feasible?

 

You can get used Tesla motors and batteries, as well as controllers here:

It is very feasible. I plan on building a 40 ft canal boat, with a PV roof, all electric. We want to do the European canals and/or Great loop.

With 100ft length you should get a lot of pv panels, and be in good shape. It is just a question of money.

Option A is to get a lot of pv, smaller battery bank, and a backup generator. 

Option B is big enough battery bank to go a full day with no sun, and no generator.

But the answer is yes, completely feasible, just expensive.

On Thu, Apr 26, 2018, 12:53 PM Carter Quillen twowheelinguy@yahoo.com [electricboats] <electricboats@yahoogroups.com> wrote:
 

Might I also suggest finding an old electric fork lift or two and raping the guts out of them. Might be easier to find than a Tesla. 15-20 kW total should get you 3-5 mph in CALM water and be enough power to maintain control up to a medium chop in a stiff wind. Some of those big electric fork lifts and industrial floor cleaners get up to about 10 hp I think and operate at 48VDC. 

I've essentially got a 7.5kW golf cart motor on steroids pushing a 50', 20 ton barge and I can make 5 knots in calm seas and head into a 35 mph wind with 2-4 ft seas at 1-2 mph to give you a benchmark. Believe me, it doesn't take a lot of energy to go SLOW . In a lake with calm water. I once pushed the Arc out of a lock and then another mile to a cove when my prop fell off using nothing more than my dinghy on the hip with a 50# thrust Minkota and a half charged marine battery. Into a VERY light head wind even.   

Capt. Carter

On Thursday, April 26, 2018, 11:18:10 AM EDT, Hannu Venermo gcode.fi@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:




Not hard at all.
Buy a salvage tesla for the batteries, and the motor and controller as well if you have good electronics/it skills.
The famous online hackers who have done this would likely help / guide you.


On 23/03/2018 16:13, Rob rob@sail4life.net [electricboats] wrote:
 

I've learned a lot by lurking, but I'm contemplating a project that is MUCH larger than anything I've seen addressed here, so I thought I'd ask for advice…

Thanks in advance !

Project: 100' and 100 +/- ton canal barge repowering

Current power (broken) diesel engine from 1957, originally rated 116 hp

I'd like to yank that beast and repower with an electric drive.

Velocity requirements are: normally 3-5 knots. Panic mode 10-12 knots.

Assume the end product looks like a battery bank, 1-2kw solar, an autostart genset (possibly a larger and smaller unit?). Autostart based on demand and/or battery voltage… but that's a pretty broad assumption and I'm certainly open to options...

Generally, plan to move <20 miles per day, or maybe as far as the sun will take us. Also, typically don't have to deal with any current (but occasionally, thus panic mode above)

I thought I'd ask about feasibility before I even looked at the costing ;-)

Thoughts and/or suggestions?

Thanks!
-Rob


--   -hanermo (cnc designs)


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Posted by: Kev <captainyoung@gmail.com>
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Re: [Electric Boats] Quite the potential project.. but is it feasible?

 

Might I also suggest finding an old electric fork lift or two and raping the guts out of them. Might be easier to find than a Tesla. 15-20 kW total should get you 3-5 mph in CALM water and be enough power to maintain control up to a medium chop in a stiff wind. Some of those big electric fork lifts and industrial floor cleaners get up to about 10 hp I think and operate at 48VDC. 

I've essentially got a 7.5kW golf cart motor on steroids pushing a 50', 20 ton barge and I can make 5 knots in calm seas and head into a 35 mph wind with 2-4 ft seas at 1-2 mph to give you a benchmark. Believe me, it doesn't take a lot of energy to go SLOW . In a lake with calm water. I once pushed the Arc out of a lock and then another mile to a cove when my prop fell off using nothing more than my dinghy on the hip with a 50# thrust Minkota and a half charged marine battery. Into a VERY light head wind even.   

Capt. Carter
www.shipofimagination.com

On Thursday, April 26, 2018, 11:18:10 AM EDT, Hannu Venermo gcode.fi@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:




Not hard at all.
Buy a salvage tesla for the batteries, and the motor and controller as well if you have good electronics/it skills.
The famous online hackers who have done this would likely help / guide you.


On 23/03/2018 16:13, Rob rob@sail4life.net [electricboats] wrote:
 

I've learned a lot by lurking, but I'm contemplating a project that is MUCH larger than anything I've seen addressed here, so I thought I'd ask for advice…

Thanks in advance !

Project: 100' and 100 +/- ton canal barge repowering

Current power (broken) diesel engine from 1957, originally rated 116 hp

I'd like to yank that beast and repower with an electric drive.

Velocity requirements are: normally 3-5 knots. Panic mode 10-12 knots.

Assume the end product looks like a battery bank, 1-2kw solar, an autostart genset (possibly a larger and smaller unit?). Autostart based on demand and/or battery voltage… but that's a pretty broad assumption and I'm certainly open to options...

Generally, plan to move <20 miles per day, or maybe as far as the sun will take us. Also, typically don't have to deal with any current (but occasionally, thus panic mode above)

I thought I'd ask about feasibility before I even looked at the costing ;-)

Thoughts and/or suggestions?

Thanks!
-Rob


--   -hanermo (cnc designs)


__._,_.___
Posted by: Carter Quillen <twowheelinguy@yahoo.com>
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.

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Re: [Electric Boats] Quite the potential project.. but is it feasible?

 

Not hard at all.
Buy a salvage tesla for the batteries, and the motor and controller as well if you have good electronics/it skills.
The famous online hackers who have done this would likely help / guide you.


On 23/03/2018 16:13, Rob rob@sail4life.net [electricboats] wrote:
 

I've learned a lot by lurking, but I'm contemplating a project that is MUCH larger than anything I've seen addressed here, so I thought I'd ask for advice…

Thanks in advance !

Project: 100' and 100 +/- ton canal barge repowering

Current power (broken) diesel engine from 1957, originally rated 116 hp

I'd like to yank that beast and repower with an electric drive.

Velocity requirements are: normally 3-5 knots. Panic mode 10-12 knots.

Assume the end product looks like a battery bank, 1-2kw solar, an autostart genset (possibly a larger and smaller unit?). Autostart based on demand and/or battery voltage… but that's a pretty broad assumption and I'm certainly open to options...

Generally, plan to move <20 miles per day, or maybe as far as the sun will take us. Also, typically don't have to deal with any current (but occasionally, thus panic mode above)

I thought I'd ask about feasibility before I even looked at the costing ;-)

Thoughts and/or suggestions?

Thanks!
-Rob


--   -hanermo (cnc designs)

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Posted by: Hannu Venermo <gcode.fi@gmail.com>
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.

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Sunday, April 22, 2018

Re: [Electric Boats] Re: EPA commuication regarding 15% Ethanol use

 

I have followed this closely for 3-5 years for stock market $$ reasons.

The given fact is that electric EVs are 5-7x more efficient in energy /
blended cost terms for users in short/medium terms, globally.
The trend for 5-7 years is electric cars gaining about 100% in terms of
sales volume every 18 months.
With mostly nissan leaf, and chinese subsidy econoboxes, until tsla got
big around 2016.

There will be == zero EV cars from big companies apart from tesla with
major large-volume mass market offerings for about 3-6 years. Ex china.
Until about 2021-2023 there is zero probabaility of any meaningful
production of cobalt for auto use, globally, in more than 2M / yr
marginal quantity ex 2017.
Tsla will make near 1M, +, via panasonic owned mines and refineries.
China made 500k in 2017, growing 100% / 18 months.
Nissan (leaf) made some batteries.
No-one else all together is even relevant.

On 18/04/2018 22:23, Kev captainyoung@gmail.com [electricboats] wrote:
>
> Many car companies are coming out with electric cars in the next 2-3
> years. The price will drop, battery tech will get better, and fossil
> fuel cars will lose market share rapidly.
>

--
-hanermo (cnc designs)

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Posted by: Hannu Venermo <gcode.fi@gmail.com>
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Friday, April 20, 2018

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Yahoo blocked this sign in attempt, but if it looks suspicious to you or it's not from an application that you're using, go to https://login.yahoo.com/account/change-password and change the password for your account.


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Wednesday, April 18, 2018

[Electric Boats] boating

 

Wish yall would get on to more fun  stuff like electric boats and maybe traveling down the rivers

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