[PSUBS-MAILIST] U joint prop

[Brian Cox via Personal_Submersibles]

That's probably the reason I've never seen one.  I'm hoping that with two props I'll be able to turn by just running one prop or the other.  

Brian

--- personal_submersibles at psubs.org wrote:

From: Marc de Piolenc via Personal_Submersibles <personal_submersibles at psubs.org>
To: personal_submersibles at psubs.org
Subject: Re: [PSUBS-MAILIST] U joint prop
Date: Mon, 08 Dec 2014 10:11:37 +0800

One U-joint causes a 1/rev vibration which can be quite severe. To get 
smooth action, you need a pair of U-joints, and the input and output 
shafts need to be parallel.

That, or you need to substitute a constant-velocity joint for the U-joint.

Marc

On 12/8/2014 9:11 AM, Brian Cox via Personal_Submersibles wrote:
>      Has anyone ever had any experience or seen a propeller that can
> change orientation using a U joint at the end of the propeller shaft?
> If could just get 15 degrees or so I might be able to eliminate my
> rudder assembly altogether.
> Brian
>
>
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