[C38] A different mast question

[Charles Finn]

While our mast does not flex much, you certainly can see the head stay and sail change as you flex it.  I constantly adjust the backstay depending on wind direction and speed.  You can readily see changes in boat speed.   I also think there is deflection regarding the keel and cabin roof, but with spartite and a massive keel, I think the mast deflects most.  Regardless of what moves, it does affect performance!
Chuck Finn
Mighty Quinn. #114
Great Lakes

Sent from my iPad

On Jun 25, 2013, at 4:03 PM, "Steve Smolinske" <SSmolinske at rainierrubber.com> wrote:

> The Royces article on our boats that is on the web site states typical
> sailing conditions backstay is at 2200-2500 and heavy wind 3300bs.   We
> have a batten taped to our adjuster with pieces of tape showing the
> limits for each.   When I put mine on 3300 and walked over to my
> neighbors,  you could  definitely see mast bend.   
> 
> -----Original Message-----
> From: listserve-bounces at catalina38.org
> [mailto:listserve-bounces at catalina38.org] On Behalf Of Mark O'Dell
> Sent: Tuesday, June 25, 2013 10:07 AM
> To: Catalina 38 Listserve
> Subject: Re: [C38] A different mast question
> 
> Sorry that this might be a bit of a tangent, but Ray's question below
> sparked another semi-related question that I have:
> 
> Last year I had my spreaders re-angled, my rig inspected and tuned.
> (Ended up replacing the shroud extension cable that comes through the
> hanging locker, as it was microscopically cracked in a few places on the
> swauge).
> 
> Anyway, these people told me something interesting, in that they said
> said we don't have a mast that will have much bend to it.. so be very
> gentle with the backstay adjuster.  (They went so far as to making me a
> limit indicator on the adjuster that "I shouldn't" exceed. )
> 
> They're telling me that our masthead rig isn't really bending the mast
> much at all... it's just pulling the mast down on the keel step harder
> and harder. 
> 
> I will also say that even if I exceed their "limit" my head stay is
> still sagging more than I think it should. +6" 
> 
> Do you guys go above 2k lbs of pressure? 3k? What you're setting?
> 
> Is my mast rake out of whack? 
> 
> Mark O'Dell
> Momentous #230
> Baltimore, MD
> http://www.c38momentous.com
> 
> 
> 
> 
> On Jun 25, 2013, at 12:52 PM, Ray Torok <torok13731 at gmail.com> wrote:
> 
>> All:
>> 
>> After repairing my lower spreaders, I have to retune the whole rig.
> Are there recommended settings for mast rake, pre-bend and that stuff?
> Also, is there a recommended tuning procedure (several are out there on
> the internet)?  Should I remove the Spartite plug at the partners to
> start?  I have no idea if the original setup was okay.  In fact, without
> lots of backstay (and mast bend), the headstay seemed awfully slack to
> me.  Any thoughts/advice/experience would be appreciated.
>> 
>> Thanks,
>> 
>> Ray
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> 
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