Prop Walk (to Starboard?)

[pma_foyl]

Hi Everyone,

I’d love to know if other 424 owners experience a starboard prop-walk in reverse? Is this a product of a v-drive/LH prop?

Or did I just misinterpret what I was experiencing?

Thanks,

paul

[unabated]

LH prop.
RH props walk to port.
Alan

Sent from my iPhone

On Jul 27, 2013, at 6:52 PM, “pma_foyl” wrote:

Hi Everyone,

I’d love to know if other 424 owners experience a starboard prop-walk in reverse? Is this a product of a v-drive/LH prop?

Or did I just misinterpret what I was experiencing?

Thanks,

paul

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[pma_foyl]

thanks Alan,
 
Are all 424s LH props?
 
Can you give me your ‘prop specs’ for my records (assuming you have a fixed, as I do)
Best,

paul

________________________________

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[john stevenson]

Paul,
The original prop on my 424 I believe was a 20×10 LH Fixed 3-blade Michigan
Wheel. I replaced with a 20″ Maxprop 10 years ago. Stern walk in reverse
is to starboard. In close quarters I always want to turn to port.
However the shaft is offset to port to allow it to pass by the rudder skeg
when being removed. This means you have to apply a slight port rudder when
motoring ahead. On my boat that is about one wheel spoke to port.

Regards,
John Stevenson
http://www.svsarah.com

On Sat, Jul 27, 2013 at 7:38 PM, Paul Audi wrote:

Quote:

thanks Alan,

Are all 424s LH props?

Can you give me your ‘prop specs’ for my records (assuming you have a
fixed, as I do)
Best,

paul

________________________________

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[Tor]

Paul,

All single screw boats “walk” or pull the stern to one side in reverse.
Left-handed (LH) props walk to starboard, right-handed (RH) props walk to
port. The trick is to know how to use that physical fact to your advantage.
Since our props are left-handed, when you need to spin your boat around
under power in tight quarters, always spin her counter-clockwise, i.e., turn
the wheel hard over (clockwise) to port. Give the throttle a sharp burst of
power in forward, throttle back to idle for a moment, and then give her a
burst of power in reverse without turning the helm – leave that locked over
to port. Continue to alternate between blasts in forward and blasts in
reverse, always with a moment of idle neutral in between, always keeping the
helm hard to port. The boat – most boats – will then spin in her own length.
Our 424’s respond rather sluggishly to the forward bursts compared to most
boats because the propeller is so far forward of the rudder that the “kick”
is much reduced.

This only works turning to port with a LH prop. If you try to spin a LH-prop
boat to starboard, the reverse gear walking will work against you, slowing
or even negating the turn.

Similarly, it is easier to dock a LH-prop boat starboard side to the pier,
since when you shift into reverse at the last moment to stop the forward
motion the boat’s stern will pull in to the pier rather than away from it.

Practice may not make perfect, but it will make better.

Tor

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Silverheels, P-424 #17

http://www.silverheels.us

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[pma_foyl]

Thank you all for your help. It’s all coming back to me now. I was just surprised.
 
And thank you also for the details on how best to manage this.
 
Fair winds,
 
P

Paul Michael Audi
m 213.610.5533

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