Re: Sharki shaft alternator
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Thankyou Olivier. Your explanation is abundantly clear to me and a relief to know that my practise of engaging reverse while sailing has been the right one.
From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Beaute Olivier via Groups.Io
Sent: Tuesday, 12 March 2019 4:13 PM
Subject: Re: [AmelYachtOwners] Sharki shaft alternator
on a Sharki with fixed prop, while sailing, you should stop the propeller by engaging reverse. This will reduce noise and packing stuff wear. There will be a "clunk" which could surprise you but don't worry, the clutch shock when you engage forward or reverse with the engine ON is stronger (there is more power from the engine towards the propeller when it is running than from the prop to the engine --through the gear-box--when the engine is OFF).
This true for every boat with a fixed prop and mechanic gear-box.
For those with Autoprop and mechanic gear-box (mainly SMs), they engage forward in order to stop the prop spinning. They don't necessarily need to start the engine with forward engaged.
For those with Autoprop and hydraulic gear-box, they leave the throttle lever in neutral position, the shaft brake system doing the job.
In both, while sailing and as the engine starts, the Autoprop will spin before forward is engaged. This is not a big deal BUT it is better to drop boat speed (if possible) before engaging forward. This will give a smaller shock to the gear-box and soft coupling.
I'm not sure if this is all clear to everyone, so, feel free for questions...
On Monday, March 11, 2019, 11:30:23 PM GMT+1, Danny and Yvonne SIMMS <simms@...> wrote:
the important thing is the clunk. My sign says no to forward, but as I said in my previous just to be contrary sometimes its clunk in forward, sometimes reverse. I don't think it has anything to do wit the prop. I have auto prop So I just go with the clunk.