Prop shaft bearing
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Rainer Huthmacher <thelastoneever@...>
Hello Captains of Amels,
I have to change the cutless bearing of my Sharki, because of vibrations under engine wich occurred after I was installing a shaft alternator... How do I pull the propshaft? Do I really have to lift the engine? Any suggestions of a Sharki, Maramu or Mango owner would be greatly appreciated.... Rainer Huthmacher Former owner of SM#69 “Yin Yang”,now owner of Sharki#83 “Rock’n Roll”,currently in Teneriffe... It feels good to back in this great forum
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Hi Rainer. Although I haven’t replace my cutlass bearing yet, my understanding is that you remove the propeller, undo the alum key on the shaft and pull off the cutlass bearing.
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Hope this helps. Regards, Warren Manon2 Sharki #15
-----Original Message-----
From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Rainer Huthmacher via Groups.Io Sent: Friday, 1 March 2019 7:07 PM To: main@amelyachtowners.groups.io Subject: [AmelYachtOwners] Prop shaft bearing Hello Captains of Amels, I have to change the cutless bearing of my Sharki, because of vibrations under engine wich occurred after I was installing a shaft alternator... How do I pull the propshaft? Do I really have to lift the engine? Any suggestions of a Sharki, Maramu or Mango owner would be greatly appreciated.... Rainer Huthmacher Former owner of SM#69 “Yin Yang”,now owner of Sharki#83 “Rock’n Roll”,currently in Teneriffe... It feels good to back in this great forum
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amelforme
On the Sharki, you must undo the motor mounts and lift the engine up about 20"/inches 50 cm in order to remove the propeller shaft as it is too long to fit as it hits the rudder skeg. It is an easy 6 hour job if nothing is badly rusted. To remove the prop shaft/cutless bearing, remove the propeller, un-tighten the bolt holding the bearing in place on the side of the stern tube and use a pipe wrench or a chain wrench to rotate the cutless out. Easy one hour job.
All The Best, Joel
JOEL F. POTTER-CRUISING YACHT SPECIALIST~L.L.C. THE EXPERIENCED AMEL GUY UNSURPASSED AMEL MARKETING EXPERIENCE AND PRODUCT KNOWLEDGE Office 954-462-5869 Cell 954-812-2485
-----Original Message-----
Hello Captains of Amels, I have to change the cutless bearing of my Sharki, because of vibrations under engine wich occurred after I was installing a shaft alternator... How do I pull the propshaft? Do I really have to lift the engine? Any suggestions of a Sharki, Maramu or Mango owner would be greatly appreciated.... Rainer Huthmacher Former owner of SM#69 “Yin Yang”,now owner of Sharki#83 “Rock’n Roll”,currently in Teneriffe... It feels good to back in this great forum
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Rainer Huthmacher <thelastoneever@...>
Thank you gentlemen....
On 1. Mar 2019, at 15:43, amelforme <jfpottercys@...> wrote:
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Steve Leeds
HI Rainer, I've changed my cutlass bearing many times in the past (the previous owner was using a 1 3/8" cutlass bearing when he should have used 35mm! I did the same for several years until I changed the shaft to 1 3/8". I think I've only changed it once since then. I have 6800 hours on the original Perkins). My cutlass bearing extends back from the boat enough to be able to "grab" it with a puller with the shaft still in place. After removing the propeller, first remove the set screws, drill dimples in the cutlass bearing for the puller to hold onto and pull it out. I have a custom puller the previous owner of my boat made up from a steel plumbing pipe that just fit over the cutlass bearing. I'll try to remember to take a photo of it on my next visit to MACCABEE. To remove the shaft, you must lift the engine high enough to bring the shaft under the engine. Other than the coupling, You probably don't need to disconnect anything else from the engine. I lay a 6" x 6" wood beam across the seats on each side of the engine compartment, with a piece of 2" x 6" board under each end of the 6 x 6 to spread the load and use a chain lift chained to the 6 x 6 to raise the engine. I may have removed the engine cover for clearance -- I can't remember. I have only done it once in the mid 90's. Regards, Steve Leeds Yacht MACCABEE Sharki #121
On Friday, March 1, 2019, 8:28:02 AM EST, Warren Traill <trailz@...> wrote:
Hi Rainer. Although I haven’t replace my cutlass bearing yet, my understanding is that you remove the propeller, undo the alum key on the shaft and pull off the cutlass bearing. Hope this helps. Regards, Warren Manon2 Sharki #15 -----Original Message----- From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Rainer Huthmacher via Groups.Io Sent: Friday, 1 March 2019 7:07 PM To: main@amelyachtowners.groups.io Subject: [AmelYachtOwners] Prop shaft bearing Hello Captains of Amels, I have to change the cutless bearing of my Sharki, because of vibrations under engine wich occurred after I was installing a shaft alternator... How do I pull the propshaft? Do I really have to lift the engine? Any suggestions of a Sharki, Maramu or Mango owner would be greatly appreciated.... Rainer Huthmacher Former owner of SM#69 “Yin Yang”,now owner of Sharki#83 “Rock’n Roll”,currently in Teneriffe... It feels good to back in this great forum
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Steve Leeds
You may want to check your shaft alignment. Steve Leeds Yacht MACCABEE Sharki #121
On Friday, March 1, 2019, 6:06:47 AM EST, Rainer Huthmacher via Groups.Io <thelastoneever@...> wrote:
Hello Captains of Amels, I have to change the cutless bearing of my Sharki, because of vibrations under engine wich occurred after I was installing a shaft alternator... How do I pull the propshaft? Do I really have to lift the engine? Any suggestions of a Sharki, Maramu or Mango owner would be greatly appreciated.... Rainer Huthmacher Former owner of SM#69 “Yin Yang”,now owner of Sharki#83 “Rock’n Roll”,currently in Teneriffe... It feels good to back in this great forum
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James Alton
Hello,
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To those that have used the Amel shaft generator on their straight shaft Maramu or Sharki, do these tend to cause shaft vibration or was there just some problem with Yin Yang? The shaft drive pulley was removed from my boat before I bought it and I have been planning to reinstall it this summer. Thanks, James SV Sueno Maramu #220
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I have been using the shaft alternator for 30 years on my Sharki (#1 - 1980) and I've never had vibrations, just a little bit of belt noise. In 2008 I replaced the Perkins 4108 with a Yanmar 54 hp and I also changed the propeller shaft and adapted the alternator that continues to go very well despite its 40 years of life Maybe yours is an alignment problem.
Il Ven 1 Mar 2019, 15:05 James Alton via Groups.Io <lokiyawl2=aol.com@groups.io> ha scritto:
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Rainer Huthmacher <thelastoneever@...>
Thank you all for the feedback,
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Unfortunately it’s not the alignment, which would have been quite easy to fix, nor the engine feet. The problem started after I installed a prop shaft alternator with a 25 cm pulley on the shaft. To do this I had to move the prop shaft 2cm to the back. Since then I have a dripping Volvo shaft seal , heavy vibrations under power or under sail and whistling loud noise over 2000rpm or if I sail over 6knots. I removed the alternator again, but noise and vibrations are still there. I checked the prop but it looks fine. I had several mechanics look into it (which I usually never have, as I do everything myself), but none could tell me for sure what’s wrong. So I only can imagine my shaft bearing is failing after almost 40 years. I would hate lifting the engine, as the Sharki has not an engine room like the SM, and I’m afraid it’s gonna take me much more than 6 hours as it would take Joel Potter😜 My idea now is to manufacture a tube split in half which would fit exactly around the shaft and try to hammer the bearing out from the inside...Anyone ever done this? Thanx already Rainer Huthmacher, Sharki Rock’n Roll
On 2 Mar 2019, at 05:04, Giorgio Ardrizzi <giorgio.ardrizzi@...> wrote:
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James Alton
Rainer,
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Really sorry to hear about the vibrations and the new oil leak. I am not sure that a failed stern tube bearing would cause the amount of vibration that you are reporting, especially under sail? I have run a boat once with a completely failed stern tube bearing and while it was noisy the vibration was not terrible. Did you try pulling and pushing sideways on the shaft to see if there was any noticeable play when you checked the prop? Do you know if the balance was checked on the 25CM pulley that you installed? You might also check the run out on the shaft near the coupling with a last word type indicator while rotating the shaft by hand. Or based on how bad the vibration is you might just place a straight edge close to the shaft near the coupling and rotate it. The run out might be bad enough that you can see the gap opening and closing as the shaft is rotated. The only other thing that I can think of would be that the faces of the sides of the pulley you installed were not perfectly parallel. You could check this by removing the coupling bolts, checking the alignment and then rotating the pulley 180 degrees and measuring again, you should get the same readings of course. I hope that you find the problem, best of luck. Thanks to the Sharki #1 owner who reports that he has never had vibrations with his Amel alternator setup. I am very anxious to set this up on Sueno ahead of the Atlantic crossing. James SV Sueno Maramu #220
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amelforme
Hi Rainer and I must admit to being a little confused, which is not at all uncommon for me. When you say “Dripping Volvo shaft seal” are you referring to the stuffing box in the engine room where the propeller shaft exits the engine room? You mention” Volvo shaft seal”. Did you replace the conventional greased flax stuffing box the boat was delivered with when new with something from Volvo? If you have an original and 30++ year old Cutless/stern bearing, it could cause the problems you mention. When you grab the propeller and forcibly move it up and down and then side to side, is there a lot of movement? When you look at where the shaft comes out, behind the propeller, can you see the black nitral rubber that is inside the bronze sleeve around the propeller shaft? Perhaps some photos of the shaft inside the engine room and the engine room shaft seal as well as the cutless/stern tube bearing would be helpful. Again, if only the cutless/stern bearing has failed, you do not need to move the engine at all. Replacing the cutless/stern bearing is done entirely from the outside of the boat.
JOEL F. POTTER-CRUISING YACHT SPECIALIST~L.L.C. THE EXPERIENCED AMEL GUY UNSURPASSED AMEL MARKETING EXPERIENCE AND PRODUCT KNOWLEDGE Office 954-462-5869 Cell 954-812-2485
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of James Alton via Groups.Io
Sent: Saturday, March 2, 2019 8:41 AM To: main@AmelYachtOwners.groups.io Subject: Re: [AmelYachtOwners] Prop shaft bearing
Rainer,
Really sorry to hear about the vibrations and the new oil leak. I am not sure that a failed stern tube bearing would cause the amount of vibration that you are reporting, especially under sail? I have run a boat once with a completely failed stern tube bearing and while it was noisy the vibration was not terrible. Did you try pulling and pushing sideways on the shaft to see if there was any noticeable play when you checked the prop? Do you know if the balance was checked on the 25CM pulley that you installed? You might also check the run out on the shaft near the coupling with a last word type indicator while rotating the shaft by hand. Or based on how bad the vibration is you might just place a straight edge close to the shaft near the coupling and rotate it. The run out might be bad enough that you can see the gap opening and closing as the shaft is rotated. The only other thing that I can think of would be that the faces of the sides of the pulley you installed were not perfectly parallel. You could check this by removing the coupling bolts, checking the alignment and then rotating the pulley 180 degrees and measuring again, you should get the same readings of course. I hope that you find the problem, best of luck.
Thanks to the Sharki #1 owner who reports that he has never had vibrations with his Amel alternator setup. I am very anxious to set this up on Sueno ahead of the Atlantic crossing.
James
SV Sueno Maramu #220
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sbmesasailor
I have the same experience as Giorgio -no vibrations resulting from the alternator, just some belt noise when propeller free-wheeling. Dennis
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James Alton
Dennis,
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Thanks for your input. The previous owner removed the large shaft mounted pulley before I bought my boat which made me wonder why this was done. I am very happy to hear that properly setup up the Amel shaft generator does not vibrate as I am viewing this device as a great source of power on long passages. Best, James
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Hi Rainer
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Welcom back. In 2014 I was a little bit too late for buying your SM. Best Peter Wilson SM003/La Rochelle Gesendet von Yahoo Mail für iPad Am Freitag, März 1, 2019, 07:14 schrieb Rainer Huthmacher via Groups.Io <thelastoneever@...>:
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smiles bernard
Hi Rainer We were next to Rock n Roll in Santa Cruz last year. My kids and I came to admire her. Very nicely set up boat. I think the sharkis are great boats. We have had the pleasure of hanging out on a friends - also in Tenerife. Aneki (spelling?!) Is the vibration constant or only at certain speeds ? I had vibration on the prop shaft when surfing down waves on recent Atlantic crossing. Anything over 7 or 8kts roughly. Then when we switched the motor on in Barbados we had what sounded initially like rough idle. On inspection it was the engine mounts and alignment causing both issues On last section of the crossing we had 4-5m seas and winds gusting up to 45 kts and I think the motion did the old mounts no favours. We have just swapped out the engine mounts so hope that’s the last of it but as yet I’ve not hit speeds to test it properly I’d guess alignment 1st Does anyone have any experience of rewinding the prop shaft alternator? I’m guessing ours has not been touched since new. It has been totally amazing on the long ocean passage. I can’t imagine why all boats don’t have them ! So interested in the reliability and service recommendations in prep for our return leg to UK in May. Many thanks and all the best Miles Maramu 162
On 3 Mar 2019, at 20:15, Peter Jaeger via Groups.Io <mallamok@...> wrote:
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Rainer Huthmacher <thelastoneever@...>
Thanks again for all the feedback... Miles, I bought a normal car alternator and isolated the ground myself. It’s a small 30amp alternator which produces some charging at low revs. Then I put a 25 cm pulley to the shaft and a 5cm pulley on the alternator... All together the cost was less than 400.- €. Changing from a SM to a Sharki was not so easy. I don’t miss any living room space, but I do miss the storage space of the SM. Basically I carry the same equipment. I installed 600w of solar power and a Silent Wind aero generator ( which I don’t recommend, the regulator is a piece of crap) because I want to make my fresh water without any engine. I even installed a washing machine.... But I miss the SM still very much. Fair winds, Rainer
On 4. Mar 2019, at 03:33, smiles bernard via Groups.Io <smilesbernard@...> wrote:
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