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Date Posted: - Thursday - 12/ 8/05 - 2:46pm
Author: Randall
Subject: I think that's bunk
In reply to: Sterling 's message, "prop ?" on - Wednesday - 12/ 7/05 - 8:38pm

I have a 4108 with a 1:1 and a 12x6. In October I motored north along the coast about 20 miles to a favorite anchorage and happened to pick a day for this jaunt when I had headwinds of 25 - 30 knots and short but very steep and breaking seas (was over the Golden Gate bar, tide contra wind). I could easily get up to 4 knots over the water and occasionaly hit 5 knots in those conditions, but given the steepness of the seas, actually had to back off throttle every few wave sets to keep Murre from burrying her nose. She was pounding badly. I had standing water on the deck most of the day and pleny of it down my front.

Point being the 12 x 6 was plenty of power and my lack of speed was defined by the sea conditions, not the prop.

Also consider the injury to sailing performance a 15" and/or 4 blade prop will inflict. Is it worth it? If I could afford it, I'd install a folding 3 blade.

In rough conditions, everyone slows down. I doubt the wisdom of planning your prop/tranny configuration around extreme conditions.

My two cents...

RR

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Replies:

[> [> Prop.. -- Sterling., - Thursday - 12/ 8/05 - 6:12pm

Randall thanks i have never had this boat in the water so unshore of how it performs under power ? Going to be doing a refit over the summer next year as part of that pulling the engine. The boat has not seen water in some 15 year .My info came from the folding prop company. My plan was ONLY a engine rebiuld check the trans new shaft seal etc and a nice new prop (folding ) Must say the spec's from the prop outfit did shock me ie: no more than 3.5 knots in a bad sea,engine temp with a 12x6 prop and so on ! So hence my posting ..Nice to know a 12x6 3 blade folding prop will do just fine ..I feel some what at ease now thank you .Didn't really plan to spend some $2.000 more on a trans! .
must say you guy's and this great site are a god send .Bill has been a great help also.

Sterling ..

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