We have a Torqueedo 801 as well, for our dingy motor. I have gotten somewhat
around the limitation of the battery by building a LIFEPO4 battery pack. It
is a 24v 40ah pack, weighs ~27lbs. It fits in a medium orange waterproof box
I got at West Marine. We tested it for an hour last weekend, and will
continue with testing today. My only hiccup is that the charger that
ecitypower sent me, a 15a 24v one, has a bad fan so I cannot charge the
pack, as the charger was getting too hot. They are sending me a replacement
fan.
I need to get a AH meter installed on it, so I can accurately judge the
capacity used and left. So far, so good. Cost was less than a replacement
battery from Torqueedo, but with 4x the range (hopefully).
Chris
On 9/5/09 8:04 PM, "ewdysar" <ewdysar@yahoo.
>
>
>
>
> Rob,
>
> I have a Torqeedo 801 and it is almost as powerful driving my dinghy at full
> throttle as my 2hp 2-stroke outboard. Unfortunately, full throttle will drain
> the battery completely in about 20 minutes. To get 1 hour or operation, the
> motor needs to be run at half throttle or less. This equates to about 3kts in
> an inflatable, in still water, no headwind.
>
> I use this motor on my inflatable with my F-27 trimaran at the isthmus at
> Catalina Island and I try to anchor as close to the dock as possible. At a
> couple of hundred yards, I can get 4-5 round trips in a protected anchorage
> over the course of a weekend, though I run slow whenever possible. I also
> carry the small wall charger that comes with the motor and plug in any where I
> can while I'm ashore.
>
> Realistically, a 2hp ICE outboard will cost less than 1/2 the price of a
> Torqeedo, and run over 3 hours at full throttle on 1 gallon of gas. With a
> gas engine, you won't have to worry about range or power.
>
> I bought the Torqeedo to be able to carry the motor folded in one of my float
> compartments. Now that I own it, I have accepted the considerable limitations
> of the system and have adjusted my usage to match the motor. It is the most
> efficient answer available today in electric motors considering total
> operating size and weight, but the cost is prohibitive. Normal trolling
> motors with just one L/A battery are cheaper, but will weigh 3-4 times the
> Torqeedo or an ICE equivalent.
>
> Given your description of your situation, I would probably choose the Yamaha.
> I'm a big fan of electric, but trying to use electric under difficult
> conditions will be an expensive experiment that could end up very
> dissatisfying.
>
> Good luck,
> Eric
> Marina del Rey, CA
>
> --- In electricboats@
> , Rob Johnson <dopeydriver@
>> >
>> > I've checked out the torqeedo site , they look pretty good.
>> > I have a mate whose boat isn't as far out as mine , and who is a very
>> strong rower , and he has been stuck on his boat for half the day , waiting
>> for the wind to die down enough to row ashore .
>> > How would the torqeedo handle those sort of conditions ?.
>> > Regards Rob J.
>> >
>> > --- On Sat, 5/9/09, dennis wolfe <dwolfe@...> wrote:
>> >
>> > ----- Original Message -----
>> > From: dopeydriver
>> > To: electricboats@
>> <mailto:electricboa
>> > Sent: Friday, September 04, 2009 5:53 PM
>> > Subject: [Electric Boats] electric drive for a pram tender
>> >
>> >
>> > I have a little 6ft 6 inch tender that I need to motorize.
>> > I've checked my options , it seems it gets down to a 2 hp 9.8 kg Yamaha..
>> > I checked out a Minn Kota , but the battery weight was just prohibitive .
>> > Its use will be to get me and/or passengers and gear out to my yacht on a
>> swing mooring , often working in to strong headwinds.
>> > I spoke to the appropriate salesman in a very reputable company , and he
>> explained that the problem lies when I need to do more than one trip , out
>> and back.
>> > And then on return , out and back.
>> > The Yamaha could do it on its little tank full , or a spare litre of
>> juice , but the Minn Kota ?.
>> > I haven't made any decisions yet . I'd prefer not to go to an IC engine ,
>> but I can't see how I can get around it , without going to a very expensive
>> battery.
>> > And when I do get to go sailing , I'll not be leaving the engine on the
>> tender , it will have to come on board the yacht.
>> > Any practical suggestions ?.
>> > I'm in Sth Australia.
>> > Rob J.
>
>
>
>
>>
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