[hpv-boats] APC 16x16 prop

Sat Oct 31 12:54:46 PST 2009

The APC 16x16 prop is great.
I have used it for a long time on my inflatable pontoon pedal boat.
My drive system has a gear ratio of 5,5 to 1.

Carl

----- Original Message ----- 
From: <hpv-boats-request at bikelist.org>
To: <hpv-boats at bikelist.org>
Sent: Saturday, October 31, 2009 8:59 PM
Subject: hpv-boats Digest, Vol 58, Issue 3

> Send hpv-boats mailing list submissions to
> hpv-boats at bikelist.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://bikelist.org/mailman/listinfo/hpv-boats
> or, via email, send a message with subject or body 'help' to
> hpv-boats-request at bikelist.org
>
> You can reach the person managing the list at
> hpv-boats-owner at bikelist.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of hpv-boats digest..."
>
>
> Today's Topics:
>
>   1. Re: hpv-boats Digest, Vol 55, Issue 2 (dennis)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 31 Oct 2009 15:10:52 +0000
> From: dennis <flareking at talktalk.net>
> Subject: Re: [hpv-boats] hpv-boats Digest, Vol 55, Issue 2
> To: Human Powered Vehicles -- Boats <hpv-boats at bikelist.org>
> Message-ID: <4994DEF844EE4F6BA17A99BB5CEE4A59 at den>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> APC make a 16 x16 prop if that is any help
>
> Dennis A
>
> ----- Original Message ----- 
> From: "David Adrian" <info at velosub.com>
> To: <hpv-boats at bikelist.org>
> Sent: Saturday, October 24, 2009 10:28 AM
> Subject: Re: [hpv-boats] hpv-boats Digest, Vol 55, Issue 2
>
>
>> Sorry to react so late to Rick's propeller advices.
>> For my aquatic vehicles I tested the props sold through Hobbycity, the
>> master
>> airscrew 15x10 and the 18x12. 12 being the maximal pitch they sell.
>> Obviously
>> they lack pitch if you keep the same gear.
>>
>> As I definitely needed more pitch I wanted to try the 15x25 Bolly, but it
>> seems
>> that Bolly have stopped somme of its works. The 15x25 prop is only sold 
>> by
>> 30
>> pieces.
>> I am still looking for one, if one of you get one and could kindly sell 
>> it
>> to
>> me, I would be the happiest.
>>
>> David
>> www.velosub.com
>>
>>
>> Selon hpv-boats-request at bikelist.org:
>>
>> Send hpv-boats mailing list submissions to
>>  hpv-boats at bikelist.org
>>
>> To subscribe or unsubscribe via the World Wide Web, visit
>>  http://bikelist.org/mailman/listinfo/hpv-boats
>> or, via email, send a message with subject or body 'help' to
>>  hpv-boats-request at bikelist.org
>>
>> You can reach the person managing the list at
>>  hpv-boats-owner at bikelist.org
>>
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of hpv-boats digest..."
>>
>>
>> Today's Topics:
>>
>>    1. Re: Propellers (Rick Willoughby)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Sun, 5 Jul 2009 18:08:56 +1000
>> From: Rick Willoughby <rickwill at bigpond.net.au>
>> Subject: Re: [hpv-boats] Propellers
>> To: HPV Boat <hpv-boats at bikelist.org>
>> Message-ID: <89DFF61F-8C2E-4141-9D4A-49FAADCEF1B8 at bigpond.net.au>
>> Content-Type: text/plain; charset="US-ASCII"; delsp=yes; format=flowed
>>
>> Ken
>> I have been travelling.  I did email directly but not sure if you got
>> it.
>>
>> The best prop is designed to suit the application.  You need to know
>> what power you can produce and what speed you will achieve with that
>> power. If you have a hull in mind then the speed v power can be
>> worked out.  The best way to determine your power output is to do a
>> test on a recumbent machine at a gym.
>>
>> Typical value of cadence is 70rpm and prop speed is 300rpm.  The
>> 300rpm works well for a suitable prop.
>>
>> JavaProp is quite good for designing a prop.  You need to set the
>> Options to suit water and select a suitable foil.  You need to select
>> a foil.  The E193 at Re# 100,000 and 1 degree AoA is OK.   The design
>> process is iterative.  You need to achieve adequate strength while
>> aiming for the highest efficiency.
>>
>> If you can weld then the easiest way to make a nice prop is to use
>> stainless steel flat bar.  I have a procedure for this.
>>
>> The Bolly boat prop is OK for an easily driven hull.  Will not be as
>> good as you can make to suit but still good for most applications.
>>
>> Rick
>>
>>
>> Greetings All,
>>
>> It's time for me to do a little research on propellers and such.  I was
>> looking at Rich W's. boat here:
>> http://www.rickwill.bigpondhosting.com/V11J_Dec_2008.jpg   and I
>> noticed a
>> wide and steeply pitched prop.  I'm sure that this is a very efficient
>> setup, so are there plans/drawings for this prop?  How wide is it,
>> and at
>> what pitch?  Are there props for sale?  If I have to make my own, what
>> materials would I use, wood, fiberglass, or...?
>>
>> On a related thread what rpms do these generally run at, and what
>> cadence is
>> typical for the pedaling?
>>
>> Thanks a lot,
>>
>> Ken
>>
>>
>> Rick Willoughby
>> rickwill at bigpond.net.au
>> 03 9796 2415
>> 0419 104 821
>>
>>
>>
>>
>> ------------------------------
>>
>>
>> hpv-boats mailing list
>> mailto:hpv-boats at bikelist.org
>> http://bikelist.org/mailman/listinfo/hpv-boats
>>
>>
>> End of hpv-boats Digest, Vol 55, Issue 2
>> ****************************************
>>
>> --
>> This message comes to you via the hpv-boats at bikelist.org mailing list,
>> sponsored by http://www,HuPI.org/
>> Visit http://bikelist.org/mailman/listinfo/hpv-boats to manage your
>> subscription.
>
>
> --------------------------------------------------------------------------------
>
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.423 / Virus Database: 270.14.32/2460 - Release Date: 10/26/09
> 08:10:00
>
>
>
> ------------------------------
>
>
> hpv-boats mailing list
> mailto:hpv-boats at bikelist.org
> http://bikelist.org/mailman/listinfo/hpv-boats
>
>
> End of hpv-boats Digest, Vol 58, Issue 3
> **************************************** 