[hpv-boats] human powered yacht?

[v garza]

Mark, are you using a carbon fiber 12x12E or fiberglass? What brand?
If the E stands for electric, the fiberglass ones, even with a thick hub 
have deflection and breakage issues for the APC brand at 50 watts in my 
gadgets.
Thanks,

Vic
----- Original Message ----- 
From: "Mark Vermilion" <marcopoloboats at aol.com>
To: "Human Powered Vehicles -- Boats" <hpv-boats at bikelist.org>
Sent: Sunday, August 22, 2010 6:51 AM
Subject: Re: [hpv-boats] human powered yacht?


> Sam,
>
> I do not know if what we have will work on such a large boat, but  check 
> out our PlanetDrive and MitrpakDrive on www.marcopoloboats.com.
>
> The PlanetDrive is a gear increaser. Depending on the model, you can  have 
> increase ratios of 1:5, 1:7, 1:25, and 1:49. They are still in  the 
> prototype stage, but we could make one available to you if you are 
> interested.
>
> The MPB MitrpakDrive is a customized-for-pedaling Mitrpak right angle 
> gear box at a 1:2 ratio, like the one Rick Willoughby has started to  use. 
> We will start selling these in a few weeks as soon as Mitrpak  completes 
> our order.
>
> I am using a 12x12E model airplane prop (about $7) with the  PlanetDrive 
> and Mitrpak on a 12' catamaran, and it works great.
>
> Also coming within three months is a flexible cable shaft, which may  be 
> useful to you if you need to snake a shaft around objects,
>
>
> Thank  you,
>
> Mark A. Vermilion
>
> Marco Polo Boats, Inc.
> Exploring the past and future of small boat design
> 1911 Smallbrook Drive
> Troy, Michigan 48085
> USA
>
> Tel & Fax   1-248-434-4187
>
>
>
> On Aug 22, 2010, at 7:15 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-system I
>> 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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