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 Post subject: Pulley source and install
PostPosted: 05 Nov 2020 09:38 
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Skipper

Joined: 09 Aug 2017 15:35
Posts: 467
Location: Maine/USVI
Right now I'm 2000 miles from the boat, but in reviewing everything, I think i need to replace the alternator pulley with a dual pulley or something. i woke up thinking about it, because the previous owner mentioned that the Balmar alternator output is weak until you get up to a certain RPM level . . . I'm typing without thinking here, but he mentioned something about upgrading the engine pulley system. Whatcha got for pointers?


 
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 Post subject: Re: Pulley source and install
PostPosted: 05 Nov 2020 17:26 
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Skipper

Joined: 04 Aug 2013 13:33
Posts: 300
The best arrangement for high output alternator would be serpentine belt/pulley. I looked into that when I put a high output alternator on the Westerbeke, but never found the parts. The Beta comes with it standard...

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 Post subject: Re: Pulley source and install
PostPosted: 06 Nov 2020 09:28 
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Skipper

Joined: 14 Jul 2012 20:36
Posts: 419
I couldn't find the parts either. Looked at having a machine shop help me, but decided against. Make sure you have perfect alignment. a good quality belt you and can run 100 amps fine. Remember tension up the alternator pretty high, but the water pump doesn't need much tension and saves the seals. The alternator is close to 2hp of load and water pump is only about 1/8hp.

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 Post subject: Re: Pulley source and install
PostPosted: 06 Nov 2020 12:56 
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Skipper

Joined: 09 Aug 2017 15:35
Posts: 467
Location: Maine/USVI
Yeah. I can find one for the W40, but can't find anything made specifically for the W50. I see the TAD stuff, other companies. Anyone solved the problem?


 
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 Post subject: Re: Pulley source and install
PostPosted: 07 Nov 2020 11:55 
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Skipper

Joined: 16 May 2009 08:06
Posts: 175
I know I have a double pulley on the front of my crankshaft for my SeaFrost compressor but I don’t know where it came from. It shouldn’t be difficult to source. I do have a W50


 
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 Post subject: Re: Pulley source and install
PostPosted: 09 Nov 2020 09:03 
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Skipper

Joined: 09 Aug 2017 15:35
Posts: 467
Location: Maine/USVI
TAD says this: "Sorry the W40 kit will not work. We might suggest fitting a PTO shaft to the front crank pulley if bolt holes are available.

Then you can fit an accessory single/double pulley to run a remote mounted alternator."

Way over my head at the moment. Anyone want to elucidate? Does it mean the engine mounted alternator has to be moved?


 
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 Post subject: Re: Pulley source and install
PostPosted: 09 Nov 2020 15:28 
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Skipper

Joined: 13 Feb 2011 21:19
Posts: 236
Location: Canyon Lake, TX
On my 1980 W50, I have a double pulley but they are different sizes. The inner larger sheave runs the alternator and the fresh water pump. The outer smaller sheave just runs the raw water pump.
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Wayne
Master and Commander of the Sailing Vessel Impetuous
Rider of Waleli Honda 1800 VTX
Subservient to no man except SWMBO
Any day without dock lines is a GOOD day!


 
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