[hpv-boats] Folding Prop

[dennis]

Hi Rick

Great prop.

I thought that you did not use a strut but let the shaft flex and find its 
own position.

On the hinge pins are these riveted in or do you use a form of socket cap 
screw.

Do you think the slots for the blade to fold  generate any drag.


Dennis A

----- Original Message ----- 
From: "Rick Willoughby" <rickwill at bigpond.net.au>
To: "HPV Boat" <hpv-boats at bikelist.org>
Sent: Sunday, August 23, 2009 10:48 PM
Subject: [hpv-boats] Folding Prop


>I finally got around to making a folding prop that was suggested
> earlier in the year.  I tested it on Saturday.  Seems to perform as
> well as my best rigid prop.  It is nice to be able to stop pedalling
> and coast.  If I sense weed on the prop then coasting allows the weed
> to flow off the blades.
>
> A small amount of weed collected on the strut but this can be easily
> reached to remove.  Most weed is channelled down the shaft to the
> prop.  Being able to clear it by coasting is far more effective then
> untangling it by hand while stopped.
>
> I have placed a photos showing the folded and unfolded positions.  If
> only one blade folds it will go almost in line with the shaft.  When
> both fold they stop against each other in the position in the photo.
> ttp://www.rickwill.bigpondhosting.com/Folding_Prop.jpg
>
> Rick Willoughby
>
> --
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