[hpv-boats] human powered yacht?

[Sam UK]

Hi  all

Thanks for all the replies. I made my first yuloh today (the thing Larry was
using by the sound of it) I will post some photo's tomorrow in case any one
is interested.

http://www.simplicityboats.com/ScullYulohaboat.htm

I found it pretty effective, It's basically a large single bladed propeller.
I think I will put the leg pedalling on hold for a while whilst I get used
to the yuloh.

Thanks

Sam

On Sun, Aug 22, 2010 at 6:20 PM, Larry H. Smith <lhsmith at wvi.com> wrote:

> By way of encouragement re. moving a large boat via human power -
>
> I watched Larry Pardey scull "Taleisin", which was 29-feet 6-inches, with a
> 10-foot 9-inch beam, and 17,800 lbs. displacement, into a berth at Port
> Townsend, Washington, during one of the Wooden Boat Festivals .
>
> Slow, but workable, and I didn't get the impression he was working
> exhaustively.
>
> IIRC, he was using a long sweep over a stern quarter without foot power,
> but I could be mis-remembering that detail (foot/no foot).
>
> Pretty impressive to see, ...but I wouldn't want to try it against any
> headwind.
>
> Larry ( Interesting to see this new burst of activity on what seems to have
> become largely a ghost forum!)
>
>
>
> On Aug 22, 2010, at 4:15 AM, Sam UK wrote:
>
>  Hi All
>>
>> I have a 22 ft kingfisher yacht http://www.kyoa.org.uk/k20+technical.htm I
>> am interested in powering it partly through human power when I am on
>>  inland
>> canals etc.
>>
>> I will also have a conventional outboard for when I get tired!
>>
>> I plan to make a Yuloh http://simplicityboats.com/yulohpage2.html which I
>> would hope to be able to use for about 2 hours a day. eg
>> http://www.youtube.com/watch?v=u7MQsdLpWaM
>>
>> In addition seems to make sense to use your more powerful  leg muscles to
>> power the thing. I realize that the boat will not move fast, and that it
>> will be hard work.
>>
>> The boat has an outboard well inside the boat and I am hoping to be able
>> to
>> make use of that to install a pedal system.
>>
>> 1) Has anyone ever fitted a mirage drive to a boat this big? With what
>> results?
>>
>> 2) I am aware of the escargot
>> http://www.mission-base.com/pedal-power/pp_escargot_photos.html are there
>> any other large pedal powered boats out there?
>>
>> 3) I have had a browse on these archives, and have seen people making
>> props
>> out of model aeroplane propellers, would the prop need to be longer for
>> such
>> a heavy boat?
>>
>> 4) I am thinking of aiming for this kind of set up
>>
>> http://www.openwaterbike.com/components/drive-units/mark-drela-drive-systemI
>> thought I might start with this cheap gearbox
>>
>> http://www.maplin.co.uk/Module.aspx?ModuleNo=43541&C=Froogle&U=43541&T=Module
>> and
>> upgrade it later if the boat actually moves under pedal power.
>>
>> Any comments or suggestions?
>>
>> Thanks
>>
>> Sam
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