Topics

[Amel Yacht Owners] Re: Volvo engine RPM

Mark Erdos
 

“The boat should never be sailed with the transmission in FORWARD.  If the shaft spins, (and this depends on the details of the fitted propeller) it will damage the clutches inside the transmission.”

 

This is not true for all Amels. I questioned Amel regarding this because our prop would occasionally spin when in reverse and under sail. I was told by Amel, when cutting the engine power leave the transmission in forward gear. When starting the engine, start it when in forward gear. They said to sail with the transmission in forward and not take it out of gear. This has prevented any further prop spin.

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff - SM2K - #275

Currently cruising - Bonaire

www.creampuff.us

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Saturday, September 15, 2018 8:57 PM
To: amelyachtowners@...
Subject: [Amel Yacht Owners] Re: Volvo engine RPM

 

 

The gearbox attached to the Volvo TMD22 normally is put in REVERSE when sailing.  This locks the shaft from turning.

 

If sailed with the transmission in NEUTRAL, the shaft MIGHT spin, depending on the propeller used, but this will not hurt the transmission.  If you have a shaft alternator fitted, this is how it would be used.

 

The boat should never be sailed with the transmission in FORWARD.  If the shaft spins, (and this depends on the details of the fitted propeller) it will damage the clutches inside the transmission.

 

This applies to the HBW250 transmission, also known as the ZF25M.  

 

The ZF25 hydraulic transmission is a very different beast.  I believe all those on Amels were fitted with shaft brakes.

 

Bill Kinney

SM160, Harmonie

Annapolis, MD, USA



---In amelyachtowners@..., wrote :

When sailing did you have the transmission in gear?  Our Amel ser.# 266 never had any turns while sailing and the transmission in gear.

INUS - BUSCH
 

On my Sharki I have a sign which is fixed in the cockpit besides the gear lever, saying "under sail engine off never put lever forward" in 3 languages. Besides my boat is from 1986 I think this is an original AMEL sign, and I have the Hurth HBW 250-3 gear.

All the best
Dieter
Fal-lera, Sharki #135



Am Sonntag, 16. September 2018, 15:04:40 MESZ hat 'Mark Erdos' mcerdos@... [amelyachtowners] Folgendes geschrieben:


 

“The boat should never be sailed with the transmission in FORWARD.  If the shaft spins, (and this depends on the details of the fitted propeller) it will damage the clutches inside the transmission.”

 

This is not true for all Amels. I questioned Amel regarding this because our prop would occasionally spin when in reverse and under sail. I was told by Amel, when cutting the engine power leave the transmission in forward gear. When starting the engine, start it when in forward gear. They said to sail with the transmission in forward and not take it out of gear. This has prevented any further prop spin.

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff - SM2K - #275

Currently cruising - Bonaire

www.creampuff.us

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Saturday, September 15, 2018 8:57 PM
To: amelyachtowners@...
Subject: [Amel Yacht Owners] Re: Volvo engine RPM

 

 

The gearbox attached to the Volvo TMD22 normally is put in REVERSE when sailing.  This locks the shaft from turning.

 

If sailed with the transmission in NEUTRAL, the shaft MIGHT spin, depending on the propeller used, but this will not hurt the transmission.  If you have a shaft alternator fitted, this is how it would be used.

 

The boat should never be sailed with the transmission in FORWARD.  If the shaft spins, (and this depends on the details of the fitted propeller) it will damage the clutches inside the transmission.

 

This applies to the HBW250 transmission, also known as the ZF25M.  

 

The ZF25 hydraulic transmission is a very different beast.  I believe all those on Amels were fitted with shaft brakes.

 

Bill Kinney

SM160, Harmonie

Annapolis, MD, USA



---In amelyachtowners@...,

When sailing did you have the transmission in gear?  Our Amel ser.# 266 never had any turns while sailing and the transmission in gear.

Alexandre Uster von Baar
 

Same here Miles,

On NIKIMAT SM2K #289, equipped with the Auto Prop H6, there was a plate near the throttle installed by Amel saying while sailing, engine stop, push the throttle in forward gear.

Sincerely, Alexandre



--------------------------------------------

On Sun, 9/16/18, 'Miles Bidwell' milesbid@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: [Amel Yacht Owners] Re: Volvo engine RPM
To: amelyachtowners@...
Date: Sunday, September 16, 2018, 6:54 AM


 









Hi bill,  You know a lot of things and
I have learned from you, but this time I will disagree.
    My boat came from Amel with
the Autoprop and with specific instructions to always put
the gear in forward when sailing.  This locks the
propeller.  If the transmission is in neutral, the
propeller spins backwards—fast.  The effect of then
moving it into forward is to put a strain on the
transmission clutches that will hurt them.  The procedure
that I was told is to leave the transmission in forward when
stopping the engine and sailing, and to start the engine in
forward if the boat is moving forward, i.e. to never take it
out of gear when moving forward.     This may be unique
instruction for the Autoprop, but it was the instruction
that came with my boat.  I remember being surprised because
in previous boats, I had always been told to keep the
transmission in reverse.   Amel said to not do this
because the propeller spins in reverse when the boat is
moving forward.
 Regards,  Miless/y Ladybug sm216,  Newport,
RI    









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ahmet kipcak
 

Thanks all of you,
I was sailing with transmission  in neutral position which caused slow spin of my propeller shaft.
This could damage the clutches inside tranmission.



Ahmet 




INUS - BUSCH inusbusch@... [amelyachtowners] <amelyachtowners@...> şunları yazdı (16 Eyl 2018 17:14):

 

On my Sharki I have a sign which is fixed in the cockpit besides the gear lever, saying "under sail engine off never put lever forward" in 3 languages. Besides my boat is from 1986 I think this is an original AMEL sign, and I have the Hurth HBW 250-3 gear.

All the best
Dieter
Fal-lera, Sharki #135



Am Sonntag, 16. September 2018, 15:04:40 MESZ hat 'Mark Erdos' mcerdos@... [amelyachtowners] <amelyachtowners@yahoogroups..com> Folgendes geschrieben:


 

“The boat should never be sailed with the transmission in FORWARD.  If the shaft spins, (and this depends on the details of the fitted propeller) it will damage the clutches inside the transmission.”

 


This is not true for all Amels. I questioned Amel regarding this because our prop would occasionally spin when in reverse and under sail. I was told by Amel, when cutting the engine power leave the transmission in forward gear. When starting the engine, start it when in forward gear. They said to sail with the transmission in forward and not take it out of gear. This has prevented any further prop spin.

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff - SM2K - #275

Currently cruising - Bonaire

www.creampuff.us

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Saturday, September 15, 2018 8:57 PM
To: amelyachtowners@...
Subject: [Amel Yacht Owners] Re: Volvo engine RPM

 

 

The gearbox attached to the Volvo TMD22 normally is put in REVERSE when sailing.  This locks the shaft from turning.

 

If sailed with the transmission in NEUTRAL, the shaft MIGHT spin, depending on the propeller used, but this will not hurt the transmission.  If you have a shaft alternator fitted, this is how it would be used.

 

The boat should never be sailed with the transmission in FORWARD.  If the shaft spins, (and this depends on the details of the fitted propeller) it will damage the clutches inside the transmission.

 

This applies to the HBW250 transmission, also known as the ZF25M.  

 

The ZF25 hydraulic transmission is a very different beast.  I believe all those on Amels were fitted with shaft brakes.

 

Bill Kinney

SM160, Harmonie

Annapolis, MD, USA



---In amelyachtowners@..., <agav8ter@...> wrote :

When sailing did you have the transmission in gear?  Our Amel ser.# 266 never had any turns while sailing and the transmission in gear.

greatketch@...
 

If the Autoprop can spin the shaft when it is in reverse, that would be a bad thing.  If it never spins when in forward, then that would be the correct position, for sure.

Anytime a prop back drives the shaft with the transmission in gear (F or R) it is wearing the clutches.

For a Maxprop the correct sequence is to stop the engine always in forward, then shift to reverse to be sure the shaft does not spin.  If stopped while turning in reverse, the blades do not feather.  Under normal conditions, if the prop is fully feathered, it will not spin in neutral either.

Bill Kinney
SM160, Harmonie
Annapolis, MD, USA