[Public-List] Props and Fuel Returns.

[Mike Lehman]

On #505  we have a Universal M430 diesel and the prop is a 3-blade 12"D x
10" pitch RH 7/8" shaft. Backing is much easier with a 3-blade and the is
less prop wash against the hull with 12"D instead of 13", so it is quieter
and more efficient.

As for the vent...I screwed a T-fitting into the top of the aluminum tank,
one side serves the vent, the other serves the return fuel. I'm told you
shouldn't do that but it works fine.

Mike Lehman
~~~_/)_/)~~_/)~~~




On Wed, Aug 19, 2020, 12:00 PM charles pleisse via Public-List <
public-list at lists.alberg30.org> wrote:

> I have recently acquired a diesel to replace my atomic 4 and I am curious
> about the various propeller sizes being used with diesels in Alberg 30s. I
> am keen to hear feedback on propeller performance from those of you using 2
> blade propellers with a diesel. Along with your impressions of performance,
> It would be useful to know what engine you have, (maker and HP) and the
> pitch and diameter of your two blade propellers.  There is a lot of help on
> line sizing propellers but nothing beats direct feedback on performance.
> Another concern with this repower is the fuel return.  Since the existing
> engine is gas powered, there is currently no return.  Nor is there any
> additional fixture on the tank to accommodate one.  I was thinking it might
> work well to "T" it on the vent line nearest where it exits the tank. As a
> footnote, the vent opening is quite high inside the nearest stanchion.
>
> Charles Pleisse
> College Park Bicycles
> ( <http://www.bike123.com>301)864-2211
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