Page 4 of 4

Re: Need Help with Mast Base Damage

Posted: Wed Apr 15, 2015 2:29 pm
by yukonbob
I thought I remember something about wood blocking supposed to be under there, accessible through the mirrors in the cabin?

Re: Need Help with Mast Base Damage

Posted: Wed Apr 15, 2015 5:12 pm
by Ixneigh
Well I know what I'm doing about it. Should work well on all boats.

Image

Made of 1/4 inch or better SS drilled for 1/4 flat head machine screws. Drill and tap into existing mast step. The ears on the face plate catch on the tops of the angle irons.
Ix
Edit: probably only two bolts would be better.

Re: Need Help with Mast Base Damage

Posted: Wed Apr 15, 2015 9:28 pm
by yukonbob
That should work perfectly. I might do that as preventative maintainence.

Re: Need Help with Mast Base Damage

Posted: Thu Apr 16, 2015 1:31 am
by cptron
yukonbob wrote:That should work perfectly. I might do that as preventative maintainence.
+1

Re: Need Help with Mast Base Damage

Posted: Thu Apr 16, 2015 8:28 am
by Ixneigh
Be nice if someone with the know how and equipment offered these for sale
Hint hint
:D :D

Ix

Re: Need Help with Mast Base Damage

Posted: Thu Apr 16, 2015 9:47 am
by RobertB
Here is the repair with the first coat of gelcoat (that did not set up last night :x ) Note that there is no longer any deck overhang into the trunk - all is supported by brass reinforced epoxy.
I consider this a repair of the damage, not sure if it solves the problem.
ImageImage

Re: Need Help with Mast Base Damage

Posted: Thu Apr 16, 2015 10:02 am
by yukonbob
Looks like it never happened! I'd be doing Ix's mod as well for extra security as well.

Re: Need Help with Mast Base Damage

Posted: Thu Apr 16, 2015 10:09 pm
by mastreb
Similar to IX's mod, but perhaps simpler, would be to pass a pin under the top of the foot forward-most spot before it bends downward, drilling a hole into the bracing, such that the pin holds the foot above the side brackets. A 1/4 bolt should do the job, and should fit.

Re: Need Help with Mast Base Damage

Posted: Fri Apr 17, 2015 8:30 am
by seahouse
mastreb wrote:Similar to IX's mod, but perhaps simpler, would be to pass a pin under the top of the foot forward-most spot before it bends downward, drilling a hole into the bracing, such that the pin holds the foot above the side brackets. A 1/4 bolt should do the job, and should fit.
Good one Matt (and Ix). One hole to drill. And flats could be ground at the ends (where they contact the angle iron) suitably to get the needed dimension that gives the proper mast rake for each boat. A bead of silicone to hold it in place.

Re: Need Help with Mast Base Damage

Posted: Fri Apr 17, 2015 11:51 am
by RobertB
I was just thinking about drilling a hole each side in the top behind the forward foot. Use this to hold fender washers with a bolt. Fender washers would protrude far enough to rest on the mast base deck brackets. Washers would allow adjusting the thickness and even using a brass one at the bottom to avoid damaging the edge of the steel angle since such a loading here has the chance of deforming these brackets (not the normal way to load such a member). Washers are also easily repairable and offer more of a bearing surface than a pin. Plus avoids the challenge of drilling through a fillet weld.

Re: Need Help with Mast Base Damage

Posted: Sun Nov 06, 2016 11:08 pm
by Globalhobo
oooh, that was frustrating- typed a reply then came back and it was gone :(

Anyway, just wondering if any of you came up with a solution that you're happy with.. We have the same type issue. The PO istalled 1/8" ss plates under the mast base angles, covering the daggerboard trunk and drilled another set of holes in the angles (not sure why) in the middle and thru bolted it all. We had to take the whole thing apart to get the daggerboard out to inspect (and subsequently rebuild). We fixed the top of the trunk and thought we might just install the angles without the plates but the mast base doesn't look right- i'm pretty certain that's why they installed the plates. Some of you had said that the 1/8" plate would adversely affect the rake and we would like to be able to pull the daggerboard without taking it all apart. So, we're just wondering if someone came up with a better plan?

i have to say, we haven't had her out on the water yet, so I don't know if we had the rigging properly adjusted whether the base plate would damge the trunk, but it appears that the PO did, so we're trying to fix a possible issue before it comes up.

mahalo

Re: Need Help with Mast Base Damage

Posted: Mon Nov 07, 2016 5:26 am
by Ixneigh
I located a good welding shop this year. They already rebuild my mast pivot for me. Next year I will have them do the mod I outlined in this thread earlier.
Ix

Re: Need Help with Mast Base Damage

Posted: Mon Nov 07, 2016 10:15 pm
by Globalhobo
Ixneigh wrote:I located a good welding shop this year. They already rebuild my mast pivot for me. Next year I will have them do the mod I outlined in this thread earlier.
Ix
So, the mod you sketched is on the fwd face of the mast base, right? What was your plan for the bottom lip of the plate? grind it off? My husband and I can both weld, but i wasnt too sure about grind the lip off of the base...