Thanks for the info. I've always had a fair amount of rake in the M-17 mast. You can usually tell when you have gone "too far"! The boat (any boat) handles so much better when you are able to get it in balance.
> Jay, > > Jerry M says the more rake is better, within reason, on his boats. I'm > sure there is info on rake in the archives and probably the MSOG site. > > I wouldn't change a thing, if I were you. > > Bill Riker > M-15 #184 > Storm Petrel > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > On Behalf Of Jay Townley > Sent: Tuesday, December 26, 2006 7:13 PM > To: 'For and about Montgomery Sailboats' > Subject: M_Boats: Some general info on mast rake > > I pulled this info off of a couple of sites. Mast rake is how far > forward > or aft your mast is at its top. Mast rake is important, because it is a > major component in the boat's balance and feel. If the mast rake is off, > you > may end up with your rudder always slightly turned just to maintain your > boat's heading. A rudder that's slightly turned is never as fast as one > that's almost neutral (not much pressure on it when sailing). When you > tack, > you push the rudder way over, which slows the boat down because the > rudder > creates resistance with the water in order to make the boat turn. > If the mast is raked too far aft. This moves the center of effort of the > sails behind the center of effort of the foils, causing excessive weather > helm and the boat may want to round up. If the mast is raked too far > forward, moving the center of effort in the sails forward of the center > of > effort of the boat's foils. This causes excessive lee helm and the boat > to > want to fall off. > In light air, a looser backstay tension makes the jib luff sag and become > slightly fuller. As the windspeed increases, increase rake to prevent the > boat from getting "bound". If you are pointing too much and going too > slow, > increase rake and loosen the helm up. If you are fast but not pointing, > decrease your aft rake. > > -----Original Message----- > From: > [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > com] On Behalf Of John Butler > Sent: Tuesday, December 26, 2006 4:37 PM > To: [email protected] > Subject: M_Boats: Re: M15's mast rake > > My #361 has a distinct rake aft. Is that normal? My shrouds go to the > after hole in the chain plates. (The former owner had lifting hooks > in the forward holes which I removed as catching hazards for the jib > sheets.) Is a lot of rake normal, or should I move the shrouds to the > forward hole? > > John Butler > > Do it now. You can't do it any younger! > .--.-. > ( ( )__ > (_, \ ) ,_) | > '-'--`--' \ _ / > -== (_) ==- > ^^ / \ > ^^ | > > | > /|\ > / | \ > / | \ > /361| \ > / | \ > / | \ > / | \ > / | \ > /________| \ > _____|__ \_ > ~^~_~^~_-~^~=~^~~_______/ ==== \_______/ > ~^~-~^~_~^~=~^~-| /~^=~^~^~^ =`^~^`^~ > ~^~ ~^=~^~_~-=~^-=~~~~~~~~~~~~~~~~~~~~~/^~_~^=~^~=~ ~^~-~^= > ~^~ ~^=~^~_~-=~^~ ^ `--------------'~^~=~^~_~^=~^~=~ ~^~-~^= > ~^~=~ ~^=~^~ ~^~^=~^~-~^~ ~^~=~^~^~ =~^~^=~^~^=~^~^ =~~`~^ > ~^~= ~^~= ~~^~~`=~``^~^^~= ~^=~^~^~^ =`^~^`^~^=~^~-~~^ > John Butler - Sailing again. Praise the Lord! > > > > > _______________________________________________ > http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats > > > _______________________________________________ > http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats > > > _______________________________________________ > http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats > _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
