[Public-List] Backing up

[David Terrell]

Al et.al.,

I went from a two bladed to a three bladed  propeller and had improved performance in backkng and in stopping. That said, the most important thing I found was that the boat would back pretty much where I wanted ti to go if I put some serious reverse power on and then put it  in neutral and let the tiller itis work. Now, while backing out of a slip, going to port or starboard does not seem to matter much. In specific cases, wind speed does not seem to matter either. We do not have current or tide in the Great Lakes so I can not comment on those issues. On one occassion, I needed to get out of trouble and put some  reverse power on and to my considerable suprise, the boat's course was straigjt as a string. Problem sovled. 

The summary is that a a combination of strong  burst of power at first, followed by moderate use of the tiller with the engine in neutral, with an occasional application of power as needed,  combined with a three bladed propelle. produces really good results. I am not sure what might have happened had I used more power when I had a two bladeed prop. Maybe I  woudl not have felt I needed to move to a three bladed prop. Can  only report on my actual experience. In any case, I am deliglted with the three bladed prop. I have only had back into a slip once. There results were ok, but not spectacular. My guess is that practicte would make better - not so sure about perfect. No disasters occured In retropsect, I think I was light on power on that occassion.  To be honest, confidence  as well. I will think about backing into the slip next summer - as  an experiment, if nothing else.

David, 432


---- Al Adelman <AAdelman at hospitallaw.com> wrote: 
> We had a 3 bladed prop on Asylum that had a lot of port prop walk but
> had enough bite to get the boat moving so that you could get some rudder
> authority.  We went to a 2 bladed prop to reduce drag for racing, but
> lost a lot of power and it also reduced the prop walk.  We actually were
> able to find the port prop walk very useful in backing into our slip.
> However, our experience has been that no matter what kind of prop you
> have, you won't get much rudder authority until you get the boat moving
> pretty good.   
> 
> Al Adelman
> 
> -----Original Message-----
> From: public-list-bounces at lists.alberg30.org
> [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of
> jirving104 at aol.com
> Sent: Friday, November 06, 2009 3:26 PM
> To: public-list at lists.alberg30.org
> Subject: [Public-List] Backing up
> 
> 
> Has anybody found a way to steer an A-30 when backing up?  Is there a
> propeller that works better than others?
> 
> John Irving
> Scotch Bonnet
> #634
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