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by thinwater
Wed Apr 04, 2018 5:27 pm
Forum: PDQ General Forum
Topic: Diesel engine mounts showing fiberglass cracks
Replies: 6
Views: 489

Re: Diesel engine mounts showing fiberglass cracks

^^ In reality, I would probably try that. BUT I would figure on many cleanings (first hot degreaser, followed by xylene), followed by lots of grinding, followed by laying relatively large area of several layers of 17 oz. biax in order to get a good foundation and bond. At least 8 inches square under...
by thinwater
Thu Mar 22, 2018 1:07 am
Forum: PDQ General Forum
Topic: Diesel engine mounts showing fiberglass cracks
Replies: 6
Views: 489

Re: Diesel engine mounts showing fiberglass cracks

What I can tell you (many years of refinery expereince with FRP diesel tanks) is that if there have been diesel leaks (looks like there have been), the diesel has soaked into the FRP and getting a good bond is going to be very difficult. Just cleaning and working epoxy and glass in is not going to w...
by thinwater
Fri Mar 16, 2018 1:06 pm
Forum: PDQ Altair (PDQ 32) Forum
Topic: Changing running lights and courtesy lights to LED on PDQ 32
Replies: 12
Views: 747

Re: Changing running lights and courtesy lights to LED on PDQ 32

I switched all of the festoon cabin lights in my new boat to LEDs by Yitamotors (Amazon, about $1 each). Quite cheap and I like the daylight color better. Look up the lumen equivalence for a good match; I intentionally went up 25% in brightness because I knew they would run cooler and would still be...
by thinwater
Fri Mar 09, 2018 7:18 pm
Forum: PDQ Powercat Forum
Topic: Fresh Water water flow PDQ 34
Replies: 10
Views: 680

Re: Fresh Water water flow PDQ 34

This problem is unfamiliar up here (Chesapeake) because we drain and vacuum the tanks each winter. Not just in terms of equipment maintenance, but water quality, you might want to think about this as annual maintenance of a potable water supply. With a shop vac it is a matter of minutes. These were ...
by thinwater
Fri Mar 09, 2018 1:18 am
Forum: PDQ Altair (PDQ 32) Forum
Topic: Keel Modification
Replies: 6
Views: 2508

Re: Keel Modification

Actually, the main reason the post was removed from my blog is that an article on the topic was published in Practical Sailor Magazine. Often I post short versions of topics on my blog that later grow and get published. I can't leave them up both places, though it is a shame. But writing about saili...
by thinwater
Thu Mar 08, 2018 11:32 pm
Forum: PDQ General Forum
Topic: PDQ 34/36 Curved Keels?
Replies: 3
Views: 300

Re: PDQ 34/36 Curved Keels?

Then if they were modified, the purpose is baffling. Harsh words, but look at the blunt trailing edge. If this were any kind of attempt at improvement, it would have been cleaned up and brought back to a square 1/4-inch edge. It should com out more like this (lower right, PDQ 32): https://cdn.practi...
by thinwater
Tue Mar 06, 2018 1:41 am
Forum: PDQ General Forum
Topic: PDQ 34/36 Curved Keels?
Replies: 3
Views: 300

Re: PDQ 34/36 Curved Keels?

If it were damage, there would be cracks, not such weird curves. I hope someone knows. Certainly you want to pull up the floors and look at the bilge. It's hard to tell much from the photos, but I would certainly want to see how it pointed during a sea trial. If it is terrible and that matters to yo...
by thinwater
Mon Mar 05, 2018 1:14 am
Forum: PDQ Altair (PDQ 32) Forum
Topic: 3m Vinyl - Trim-line
Replies: 7
Views: 497

Re: 3m Vinyl - Trim-line

Ops. I thought you meant the molding on the transoms. Yes, of course there is gel coat under the stripes.

JWood pretty well nailed it. Xylene also works. Mostly time.
by thinwater
Sun Mar 04, 2018 4:18 pm
Forum: PDQ Altair (PDQ 32) Forum
Topic: 3m Vinyl - Trim-line
Replies: 7
Views: 497

Re: 3m Vinyl - Trim-line

It's gelcoat, but the edge is not finished (just cut).

If you find a replacement trim, post it. I think quite a few owners are interested in replacing it, but my understand is the original supplier no longer makes it.
by thinwater
Sun Mar 04, 2018 1:09 pm
Forum: PDQ Capella (PDQ 36) Forum
Topic: Windlass and Anchor Chain
Replies: 9
Views: 541

Re: Windlass and Anchor Chain

Not knowing your layout, do make sure a horizontal windlass will not snag a sheet. You may want to tape a cardboard box to the location and go sailing. I often make mock-ups like this before cutting holes! It cuts down on mistakes and reduces stress. I sailed around with a cabin heater-sized box tap...
by thinwater
Sun Mar 04, 2018 1:09 pm
Forum: PDQ Capella (PDQ 36) Forum
Topic: Windlass and Anchor Chain
Replies: 9
Views: 541

Re: Windlass and Anchor Chain

Not knowing your layout, do make sure a horizontal windlass will not snag a sheet. You may want to tape a cardboard box to the location and go sailing. I often make mock-ups like this before cutting holes! It cuts down on mistakes and reduces stress. I sailed around with a cabin heater-sized box tap...
by thinwater
Sat Mar 03, 2018 12:13 am
Forum: PDQ Capella (PDQ 36) Forum
Topic: Windlass and Anchor Chain
Replies: 9
Views: 541

Re: Windlass and Anchor Chain

Lewmar V700 and 1/4-inch grade 43 chain. The sizing for the PDQ 36 is the same. If you feel like more strength, use G70 rather than larger chain... but there is no reason. (The WLL of 1/4 G43 is 2600 pounds, and the 60 knot WL with a nylon bridle is only 1/2 that. The safety factor is above that.) I...
by thinwater
Thu Mar 01, 2018 9:32 am
Forum: PDQ General Forum
Topic: For those of you that use jacklines or tethers, a locking biner that isn't
Replies: 0
Views: 212

For those of you that use jacklines or tethers, a locking biner that isn't

I was messing about with clips for a follow-up article and ran into a surprise. I clipped a Spinlock clip on a u-bolt, rotated it, pulled... and it came off. I wish I could post the video, but you will have to follow the link. http://sail-delmarva.blogspot.com/2018/02/a-locking-carabiner-that-isnt.h...
by thinwater
Sun Feb 25, 2018 11:52 pm
Forum: PDQ Powercat Forum
Topic: How to change engine coolant water
Replies: 7
Views: 396

Re: How to change engine coolant water

This is why most automotive service stations use a machine that changes the AF by displacement, without draining. Some cars are terribly difficult this way. However, normally the problem slowly clears (air is dispersed in the coolant and comes out the expansion tank). If this were not true, small am...

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