Search found 356 matches

by Kevin Keller
January 1st, 2008, 1:20 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

Hi, I am not doing a layer of gelcoat and have never worked with it, so I cannot really tell you much about it other than what I have read. I am just faring the fiberglass with a mixture of aerosol and epoxy which sands smooth fairly easy. I will follow it up with some primer and top coat paint. Kevin
by Kevin Keller
November 16th, 2007, 1:23 am
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

I noticed along the rim, the layer of fiberglass from the transom had separated from the rim. So I took a die grinder and removed it down to the polyester glue. If you look close you can see it all cracked along the bottom. I will clean it up and fillet it with some epoxy and aerosil. Then lay some ...
by Kevin Keller
November 5th, 2007, 9:18 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

George, Drop me a note anytime. I am going to paint it myself. I have a HVLP turbine sprayer I will use. I have seen another catamaran rolled with Awlgrip though that looked awesome. I am going to use Concept paint. I think it is made by PPG and I have painted my car and a jetski with it. I will sta...
by Kevin Keller
November 4th, 2007, 2:51 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

So am I!!
by Kevin Keller
November 4th, 2007, 1:59 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

These are a couple of shots looking through the middle hole I cut to add the foot strap backing blocks. By the way, I cut the holes on the bottom instead of the top because I felt that the fiberglass repair would do a little better under tension rather than compression. I need to finish up this hull...
by Kevin Keller
November 4th, 2007, 1:46 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

Here I reinforced the transom. It does not look pretty but it is hard to work blind. I think it will help a lot though.

I added 3 layers of fiberglass to the lower part of the transom where the majority of the damage would occur from a hit to the rudder.
by Kevin Keller
November 4th, 2007, 1:37 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

Now I went to the transom to reinforce it.
by Kevin Keller
November 4th, 2007, 1:20 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

After repairing the bulkhead I had to close the hole again.

I took the patch I made, trimmed it and put a wire through it.
by Kevin Keller
November 4th, 2007, 1:13 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

This is the other hull which needed some repairs. I noticed on both hulls that the bulkhead underneath the forward beams had separated from the inboard hull. I was able to repair the aft side through the access port. I was hoping the front side was ok but I happened to look through the bolt holes an...
by Kevin Keller
November 4th, 2007, 12:55 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

Now I flipped the boat over and started on the bottom. I wanted to put a new layer of tape over the bottom seam. I found some tears in the existing fiberglass and found some of the foam was still wet despite being out of the water for 8 months. I think I finally found the elusive leak. There were qu...
by Kevin Keller
November 4th, 2007, 12:46 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

More photos.
by Kevin Keller
November 4th, 2007, 12:36 pm
Forum: Technical Forum
Topic: Refurbishing SC20
Replies: 37
Views: 39190

Refurbishing SC20

I am in the middle of refurbishing my boat. I was originally concerned about some wrinkles I saw on the upper side of the hull forward of the front beam. Along with some cracks in my beam I decided to take the boat home and do some repairs. You might find these of interest. I have learned a lot abou...
by Kevin Keller
November 2nd, 2007, 10:32 am
Forum: Technical Forum
Topic: Diamond Wire Tension
Replies: 13
Views: 12379

Thanks Matt, Come to think about it if the mast does bend like that and it is rotated it will flatten the sail. In one of your previous posts you said, " the SuperCat 19, 20 & 20TR do not utilize a pre-bent mast and were designed to be adjusted / tuned as I previously described". Is th...
by Kevin Keller
October 31st, 2007, 5:33 am
Forum: Technical Forum
Topic: Diamond Wire Tension
Replies: 13
Views: 12379

Matt, I read the Diamond Wire post you referenced. I am not sure if it make sense to me. With a good wind my SC-20 33' mast tends to bend concave to the wind. In other words, the middle of the mast bends to the leeward side. The leeward side diamond wire is the side that is tight and the windward si...
by Kevin Keller
October 30th, 2007, 6:55 pm
Forum: General Discussion
Topic: Flipping
Replies: 5
Views: 6230

Well it seems like almost every where I sail the apparent wind is a close reach. Initially I had never sailed a boat so fast and couldn't figure out why the wind was shifting so much. I never thought the apparent wind would change that much. I was ignorant and then someone educated me. I guess from ...