Graham=2C
I am shure you are correct=2C but in my experience I have not noticed more
vibration=2C once the carbs ar well balanced.
Advantages are - less weight=2C less money=2C less maintenance=2C easier
to balance=2C easier to ship in one piece=2C better visibility when feather
ed on MG=2C less drag=2C and bottom cowling comes off easily=2C without hav
ing to remove tailpipe etc.
Why do most GA aircraft have 2-blade props ?
Karl
Date: Thu=2C 15 Apr 2010 22:54:04 +0000
From: grahamsingleton@btinternet.com
Subject: Re: Europa-List: Weight reduction - Brake Discs
Frans
in theory only is a 2 blade more efficient=2C you get more vibration that c
an't be balanced out. More vibration gives more disruption to laminar flow
so more drag.
This is also why 2 blade windmills are more likely to throw blades. 2 blade
s don't cope with non axial air flow=2C multi blades do
Graham
From: Frans Veldman <frans@privatepilots.nl>
Sent: Thursday=2C 15 April=2C 2010 23:14:32
Subject: Re: Europa-List: Weight reduction - Brake Discs
Get a two blade prop. One blade of a CS prop is 4Kg's worth. Apart from
that=2C it cruises more efficiently=2C cutting down on fuel (read: weight).
Frans
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