Cruising Sailors Forum Archive
I would worry about the long over-hanging load on the shaft. 
In Response To: It's ironic as sailboats become, lighter, faster and easier to sail, they need more electric power. 
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() Just finished up a career as an engineer around lots of conveying equpment. That shaft extension looks like big trouble. The cyclic fatigue loads on the end of the crank will be very high. Of course this would not be the first time I have been proven wrong ;o) . Here is a photo of the installation on the second alternator I did on our Yanmar 4JH a few years ago. The large drive sheave nested over the outside of the engine sheave to minimize the overhang. Went with a single belt on the 100a alternator and it works fine. Having the almost 180° wrap plays a big part in preventing belt slip.
Messages In This Thread
- It's ironic as sailboats become, lighter, faster and easier to sail, they need more electric power.
- I would worry about the long over-hanging load on the shaft.
- One wonders why they need a second alternator
- With normal engine room heat, the real world output could be a lot lower.
- The alternators normally provided by Volvo
- Dunno. This is the owners second Fontaine daysailer.
- Any idea how old the owner is...?
- Jon, I knew this would bring you over.
- Jon, I knew this would bring you over.
- Any idea how old the owner is...?
- It's not the shock loads but the cyclic loading.
- We had all electrics on our bvi trip
- High Acceptance Rate Batteries???
- I would worry about the long over-hanging load on the shaft.
