I decided to make a template for the machine shop to use when brazing the keel pivot pin bushing . My dimensions are 5″ 3/8″ front to back, 4 7/8 wide at the front and 5″ wide at the back.
I’m not sure how useful this information is to anybody, or even if this template is needed – but it seemed like something worth doing to help the machine shop get this bushing in the right place. The two pencil lines are the actual size of the slot in the hull where the keel swings up. Notice that the brass brackets are significantly over into the swing space. That’s as expected and the directions are to grind them down to the correct size to minimize the play in the keel from side to side.
In the above view, the template is actually upside down. Here is it from the top:
The bolts will come up through the brackets like this, and will screw into the weldments as shown in the next picture.
You can imaging that the upside down “L” shaped weldments are embedded in the fiberglass at the bottom of the boat. You’ll have to imaging it because I haven’t done it yet.
So, on to the machine shop news.
I dropped by a machine shop after work this week, and talked to a friendly guy about my keel.
It seems I had 3 jobs for them.
- Mill the brass brackets down to size
- braze or weld the bushing into the keel and build up the area around the pivot hole
- Sand blast the keel
He needed to talk it over with his boss and go online here to check out my pictures so as to get a good feel for the job without me hauling my 550 lb keel over there. He did, and the prices were a bit more than I want to spend.
- $300 to mill the brackets
- $800-$1200 to weld the bushing into the keel
- Didn’t get to discussing the price for sandblasting, but in our initial conversation he did mention they didn’t usually do stuff this big.
In our conversation he was very helpful and realized this was out of my price range. He suggested that maybe using JB Weld was the way to go to get the bushing in, and that with a grinder I should be able to downsize the brackets as needed.
So, bottom line, as that old saying goes: If it is to be, it’s up to me.
I’m going to start grinding the keel this weekend to fit the bushing and get the crud off the sides. Stay tuned.