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Re: Mizzen furler gearbox, A54 peculiarity?

CW Bill Rouse
 

I don't know, but I can guess.

I think Amel used that same "mechanical furl" gearbox with some vertical electric furling motors (later model 54 main furler). This may be the reason the drain holes were taken away.
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Bill
CW Bill Rouse Amel Owners Yacht School
Address: 720 Winnie, Galveston Island, Texas 77550 
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On Wed, May 13, 2020 at 11:50 AM Sv Garulfo <svgarulfo@...> wrote:
Hi all,

In the great document by Gary Silver about the overhaul of the SM Mizzen furler gearbox (thanks Arno for sending us a low bandwidth friendly version), it is mentioned that the bottom part of the gearbox housing is drilled with 2 holes that are used to both unscrew that part (with great efforts) and drain the gearbox of liquids. 

As our gearbox got stiffer recently, I removed it and it appears that those 2 holes are not through openings.. thus not acting as drains. And the gearbox was full of rainwater up to the attachment bolts. Arno tells me he saw the same. 
So the teflon bushing got very dirty and stiff with all sorts of deposits. 

Does anybody know why the drains are no longer machined through? Is it an A54 “innovation”? 
It doesn’t really make sense and I’m thinking of drilling those holes all the way through to reinstate the drain. Any word of advice against that idea?

Thanks for your input

Best, 


Thomas
GARULFO 
A54-122
Tahuata, French Polynesia 
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