WebLetter 36An Occasional Publication for the Home Boat BuilderGlen-L Marine Designs - 9152 Rosecrans Ave. - Bellflower, CA 90706 In this issue
GLEN-L Update
Barry Witt Wood/Plywood questions?For answers to many questions concerning wood see the FAQ's page in our Wood and Plywood Information section. On the Mark: Scraping for finishingby Mark Bronkalla"Due to recent work on the boat and interest from the boatbuilder connection, the topic has changed." ..Mark While applying the final coats of epoxy and varnish, there are times when it can be quite frustrating. At times it may seem like you have:
Finishing is not my favorite part of building boats or furniture. I love the construction and the final finishing steps where the glossy finish shows off all of my hard work. Conversely, the seemingly interminable sanding sometime makes me wonder why I started this project. Mental breakthroughThis spring I am finally getting around to varnishing the inside of my Riviera. I know I should have done this 2 years ago, but we wanted to use it and I was putting off all of the sanding required. A recent article in Wooden Boat helped immensely. It covered using scrapers for finishing.I had been using planes and sandpaper. I was fixated on power sanding to get the job done more quickly, and had developed a mental block about using hand scrapers. I use scrapers frequently on furniture projects and in some cases don't sand at all, but only scrape and plane. Unfortunately, on the boat I did not even think of using them! The interior of the hull has MANY inside corners which make sanding no fun (hard to do and leads to bashed finger tips). With a scraper it goes SO much easier and quicker that it is almost unbelievable. In addition, the greater control with the scraper makes it something I can have the kids do. With sandpaper, there were too many sand-through problems to make it worth having them do it. It is great to have the kids do the engine compartment - they fit so much better than I do, and end up with fewer aches and pains (or at least I do). Typical cost for scrapers is $5-8 each or 3 for $15. POXY-SHIELD The boatbuilder epoxyThis is a re-print from WebLetter 3. This is one of the most often asked questions about Poxy-Shield, and well worth repeating. How can I increase the working time of POXY-SHIELD? This is a commonly asked question... and a good one. The speed at which any particular epoxy sets up is determined by temperature. There are several ways to affect temperature, both directly and indirectly. Either by controlling physical temperatures or by controlling the resin volume. There are obvious ways to control temperature. If the weather is warm, the resin and hardener can be stored in a cool place or can even be cooled by the simple expedient of setting the resin container in a bucket of ice. Do not work in the sun. Will a fan help? Not likely. Fans do not cool. They move warm air away from your body and heat generated by the resin, but this is neglegible once the resin is applied in a thin film. Which leads to the second, and possibly most important way of extending "pot life". Once the resin is mixed with the hardener, it begins to react; the reaction generates heat. This heat will accelerate the process. Once you can feel the heat it is probably best to discard the resin, particularly if you are applying glass cloth. So what do you do? As soon as the resin and hardener are thoroughly mixed, transfer the mixture to a container with a large surface area (pie tin, paint roller pan, etc.), this allows the heat generated by the reaction to dissipate. Obviously, if you get the mixture onto your boat quickly it will have the same effect. How about adding less hardener? Don't do it. Visualize epoxy as a plastic material that has been disassembled. If you do not put all the pieces back in, you will not have the same product. Although there is some leeway in mixing, it is best to keep as close to the recommended mix as possible. In the case of POXY-SHIELD, the mix is 5 parts resin to 1 part hardener. Epoxy Manual on-line for more information on working with Poxy-Shield boatbuilder epoxy. In the newsOtis Gifford's Bo-Jest appeared in WoodenBoat's "Launchings" section, May/June 2002. Otis Gifford began with the Bo Jest plans from Glen-L Marine Designs. He extended the stern to enclose a 25-hp, four-stroke Mercury outboard motor. The 19' plywood-and-epoxy O'sARK travels Florida's St. John's River and the Intercoastal Waterway at 5.5 knots. In the same issue: Scott Cronshaw stretched Glen-L Marine's design for the 18' Little Hunk to 20' 9". He built GLORY with 1/2" fir marine plywood for the sides and 1"-thick oak planking covered with 3/4" plywood on the bottom. All is sheathed with fiberglass and epoxy. (I assume"oak planking" should be "oak framing".)
Old Boat Club: "fast, sleek, water rocket"This recent entry for the "Old Boat Club" Project Registry tells a familiar story of resurrected dreams... JET CAT 14' / Steve Johnson / steve_wake2001@hotmail.com / 5-12-02: My grandfather had built this boat over thirty years ago, along with another Glen L boat called the Squirt. The boat stayed in excellent condition, and provided the family with many wonderful times on the water. However at the time, we only wished the engines would have been built as well as the boat was. They kept breaking down, and because of that fact the boat stayed in storage for 28 years. Two summers ago I went down and opened up the cover that was on top of it. In my eyes I saw a fast, sleek, water rocket that would be the most interesting boat on the lake. I decided to start to re-build the boat that summer. The more I examined it, the more work I found that had to be done. I had to strip all the interior, rip out the full floor, and sand all the old paint off. Once the boat was down to bare wood, we basically had to start fresh. We re-fiberglassed the outside, strengthened the bilge area, and re-inforced all the bulkheads, stringers, and stations. Now, almost 2 years later we are finally at the painting stage. We decided to paint it off white, with Interlux one part polyurethane paint. We bought a Johnson 120 H.P. outboard which should push her along quite nicely........ Right now I am building a few parts for her at the company I work at. I'm building a gas tank, seat pedestals, a wakeboarding tower, a window frame, and an engine bracket. "all out of aluminum". There is still a lot of work, but I am very excited to finally have it done. Feedback: Kidyak
Subject: Kidyak Hello, I wanted to pass on some photos of Kidyak that I built last summer. Don't blink, you are not seeing double. You are looking at a matching pair of Kidyaks I built for our 6 year old twins (they are 7 now). Last summer they each wanted their own kayaks since they were tired of taking turns with rides in my kayak (sharing is just too much work). I saw your plans for Kidyak and it looked perfect for 6 year olds. Most of the paddling we do is in the many reservoirs and remote mountain lakes of Idaho. I wanted a design that was stable enough for a beginner and had good tracking ability to handle windy conditions. They liked the looks of the shark face on the prototype shown on your web site. That is why you see shark faces on theirs. Safety was my primary concern and I liked the enclosed floatation chambers in the ends and the open cockpit for easy entry/exit. These were the first small boats that either of the boys had used and I was surprised at how quickly they mastered them. We camped near Redfish lake in the Sawtooth Wilderness area in central Idaho when the boats were first finished. The first morning we were there the boys put the boats in the water. They were a bit nervous at first but by lunch time they were all over the lake paddling like experience kayakers. Kidyak is a very stable boat which helps first time paddlers gain confidence quickly. The boys helped build the boats which adds to their enjoyment in using them. They are proud to tell their friends about the boats they built. These were also the first stitch and glue boats I have built and I found it surprisingly easy. Thanks for the great design. This week we are adding more padding for the seats and adding a couple of front deck lash points for shock cording to hold a dry bag full of lunch or other things that a 7 year old might consider as necessary expedition gear. I also have two 14 year old boys who are interested in boat building. They have their eyes on Tunnel Mite and Squirt. It looks like I will be placing another order soon.
Scott Van Hoff "Safety Standards for Backyard Boat Builders"From the "Letters" section of Boatbuilder magazine, May/June 2002. Coast Guard Standards On the subject of powering a homebuilt boat, the present Safe Powering Regulations (effective date: 1 November 1972) in Subpart D of Part 183 were adopted from industry standards published by the American Boat & Yacht Council (ABYC) and the Boating Industry Associations (the former BIA is now the National Marine Manufacturers Association). These standards were originally developed by a team of boating experts. They tested a variety of boats (approximately 150) and rated each boat according to the horsepower they felt was safe or unsafe. The ABYC plotted these test results against boat dimensions (length and transom width) and derived an average safe horsepower recommendation. The boats tested by these experts were off-the-shelf models which were available during the period 1954 through 1967. All of the boats tested were of conventional design (semi-V, round chines, cathedral hull). All of the boats had a length-to-beam ratio ranging from 2.2:1 to 3:1, and the smallest boat tested was 14 feet in length. Later amendments to the Safe Powering Standard (effective August 1, 1987) allowed manufacturers of small outboard-powered runabouts with remote wheel steering to use the ABYC safe maneuvering speed and quick turn tests for computing horsepower, provided they met certain qualifying criteria: (i) 13 feet or less in length; (ii) remote wheel steering; (iii) transom height (A) minimum 19-inch transom height; or, (B) for boats with at least a 19-inch motorwell height, a minimum 15-inch transom height; and (iv) maximum persons capacity not over two persons. Manufacturers of small outboard runabouts meeting the special criteria who used the performance tests for determining maximum horsepower were limited to a maximum of 40 horsepower. Now I want to touch briefly on the subject of the "Safety Standards for Backyard Boat Builders" pamphlet. First of all, it is just that-a pamphlet that provides a simplified explanation of the Coast Guard safety standards and regulations to individuals building their own boats (people who are building a boat for their own use and not for sale). The pamphlet is not a regulation and has no force of law. If there are readers of Boatbuilder who are manufacturers in the business of building boats for the purposes of sale to the public, they should not be using the "Safe Standards for Backyard Boat Builders" pamphlet, but, should instead be following the pertinent regulations in the Coast Guard regulations 33 CFR Parts 179, 181, and 183. Second, while the Coast Guard encourages individuals building boats for their own use and not for the purposes of sale to build them in compliance with Coast Guard safety standards, there is no regulatory requirement for them to do so. If you are a manufacturer of boats for the purposes of sale to the public, you can expect: (1) a visit by a Compliance Associate (trained inspectors under contract to the Coast Guard) for inspection of your production for compliance with Coast Guard regulations; (2) your boats might be spot checked for compliance by Coast Guard boating standards personnel at a boat show; or (3) one of your boats might be purchased on the open market and tested for compliance with the regulations. There is no similar enforcement mechanism for individuals building boats for their own use and not for the purpose of sale.
Alston Colihan Mat and epoxySince epoxy is "better" than polyester resin, can I use epoxy resin to apply fiberglass mat in my one-off fiberglass James Cook? Answer: First some background: From Fiberglass Boatbuilding for Amateurs, Chapter 5...
From How to Fiberglass Boats, Chapter 3...
Allyn, our shop foreman, has made panels with mat and our Poxy-Shield and he disputes that there is any problem with bonding. However, this would be quite an investment and unless you can find someone who can assure you that their material is compatible, it is very risky to use epoxy. Epoxy is "the" resin to use over wood because it sticks so much better than polyester. The requirements of glass laminates are different. See Boatbuilding Books for more information on the books quoted above. Can I increase the range of the Argosy to about 2000 miles?The above question was asked by someone interested in building the Argosy.
You need to find an additional 48.7 cu ft of space (about 3'8" x 3'8" x 3'8"). Shop Talk: Making a square peg fit in a round holeSome time ago I took pictures of Allyn cutting the base of the mast for the Eight Ball-FG to a round shape. In another context I recently had an email from a builder asking how we would round a square spar. So... here is the answer. The following shows some of those "1000-word" photos to illustrate the procedure. Feedback: Power Skiff 14
Launching, May 5, 2002 Well, I did it. This morning, poured the old gas out of the motor, hooked the trailer up and got fresh gas on the way to the lake. Lu and I launched the boat and fired up the outboard, a 15hp Merc (just tuned up). I had Lu in the very front seat and me at the motor. Gunned her and was very disappointed at the way she ran. Asked Lu to move to the centre seat, gunned her... and WOW! Ran beautifully, just jumped up on plane, and ran very dry, no splash into the boat... and here is the best part... 22mph with both of us in it! Ran her for two hours up to the far end of the lake, twisting and turning, just flying! She handles great, turns smooth, low wake, lots of freeboard. Had Lu driving her so I could check out the middle seat, and it's warm, the wood doesn't seem to transfer the cold from the water as the aluminum did. Lu had fun driving it, she had never run a boat before, and the grin on her face (not to mention mine) was something to behold. All in all, a very satisfying experience. The boat seems to draw looks of approval from the spectators, and I must admit, she is a fine looking craft. Took her out by myself, and again she just jumped up on plane, and I made 25mph! The best I ever got out of the old aluminum was 15mph. Lots of room, and very comfortable too. It seems unreal that I actually built it! I would like to thank Glen-L Design and Barry for great plans and support throughout the project. I can't wait to build my next one. Will send pics when developed. Daniel Rullman QuestionsThe following is from the US Coast Guard web site. Since I have been asked some of these questions in the past, and didn't always know the answers, I am including them here. Click on the link below for the answers.
Recent email:
Below is the result of your feedback form. It was submitted
on Sunday, May 12, 2002 at 21:53:47 name: Doug Wolven Comments: My bother and I built the Glen-L 10 21 years ago. I am now converting it to an electric motor scow called Sparky Elmo ("Electric Motor"). My kids use it for a reading center. My son and I built Dinky which he named "Dinky". We have also built Minuet, called Ark. We have loved sailing that most of all. It has been ten years now. Bo-Jest, called Lily Pad, is being built by my second-graders and I. I am really enjoying your web site and seeing what others are doing. Glen-L deserves all the success it has earned. All the projects have been fun and educational. Doug Note: The Bo-Jest is a long-term project involving Doug's second grade classes and his assembly at home. We hope to have a page detailing progress in the future."My kids and I are excited to give you something that will demonstrate how simple it is to have seven-year-olds accomplish as much as they do in construction." Doug Wolven
Subject: Big Hunk! Having a real good time, all us old retired laborers get together and make plans as to who is going to do something next, with your guidence,,,,,Plans & patterns. Some of us can't use our legs, some of us got arthritis and can't use a hammer, but we all meet for the building of the Norma -K. thanks Glen-L
Subject: Re: poxy shield and Kevlar compatibility
Brent E Jamison wrote: From our book How to Fiberglass Boats:
--
Below is the result of your feedback form. It was submitted
on Sunday, April 21, 2002 name: Chuck Jackson
Comments: I have built a boat from your plans, a Hunky-Dory
back in the 70's. It was 22' with a driving console
and some deck front and back, powered by a Harding-marine
Olds 240HP with a Hamilton jet pump. I took it to Alaska and
used it on Cook Inlet and the big Susitna River, Etc. It
worked well and would run in 3" of water at about 55MPH.
It also was very seaworthy! 55mph in 3" of water? ... brw Date: Fri, 26 Apr 2002
Barry,
-----Original Message----- I caught your article in the GlenL newsletter. I have a contribution in the #20 newsletter, "Father and a GlenL Rebel". I'd be interested in the speed your hull attained.
-----Original Message----- This is another response to your communication and I have found one picture so far of my "Rebel". It was taken 13 years after I built it in 1962. The picture was July 4, 1975 and my three little sons were running around the dock at our summer home at Sun Lakes by Coulee City... As you can see it also was a ski boat with the rack on the back end. I used 57 Chev car seats from a hardtop for front and back. You could flip forward and walk to the back. Had seating for six. It was all glassed with a mahogany dash and had three transom knees in the backend for the long shaft 75 Johnson. 22 years later it was still a good boat. In the average summer I ran at least 3 cases (24 quarts) of oil through the engine on a one quart of oil to 5 gallons mix. We never bare footed because we didn't have the speed. We still have the single skis we made that were copied from the O' Connely and O'Brien style. We often went daylight to dark and sometimes after dark -- oh the bugs! We also were into the mirror water at 6:00 and 7:00 in the morning and you are right about no wake behind the "Rebel" for skiing.
Later,
-----Original Message----- Barry, I am looking and working on some pictures of past boats the "Rebel" "Renegade", and "Outrage" that we built. So Far I have found two pictures but will look for more. Guy Middleton go me stirred up as we have been communicating. The "Rebel" picture I sent to him at the end of the file. The "Outrage" Arlt version is attached here. My son Bob owns it now so it is still in the family, however we are all into serious Jet Skiing and have 4 of them in the family now for several years. This year we are celebrating 40 years of Glen-L boats in the family. The Rebel in 1962 and the Renegade in 1978 that I built. The Rebel was the only boat for the first 22 years and the Renegade since. We also have an Outrage that my son Richard built to fit with that great family of Glen-L designs. Thanks again for your great designs -- They last a lifetime! Spike Arlt Photos
Subject: Re: WebLetter Size Thanks for asking! The newsletter loads pretty quickly for me, but I have a good connection. One solution to the problem of breaking the articles would be to repeat the opening information at the beginning of the "continued" article. Seems to me you used to do this, but maybe I'm thinking of a different newsletter. Including one picture, with links to other pictures works well. One suggestion: when asking for response to questions, e.g., "what do you think of the newsletter?", if you included your "reply to" address at that point, I'd bet more people would reply. I really enjoy the newsletter, no matter what the format or how many pictures are included.
Thanks,
Subject: Tango/Kevin Gough OK!!! The boat is glassed at last. I'd never done this before so I really had to take my time with it. I'm suprised how easy it turned out to be. I'm not going to paint the hull at this point though I know it would be easier to paint it now rather than later. The reason for this is that drops of resin might fall and cure on the side planking while I'm glassing the deck and as I might be sanding the hull again I'd hate to ruin a nice paint job. Note: We would usually paint the bottom, then paint the sides with the boat sitting on the trailer after decking, etc.
Subject: I won Dear Glen-L, Thanks for a great contest. I will soon place an order for various boat building parts and will want to use my gift certificate for that order. What do I have to do to apply the certificate towards my order?
God bless you all,
Subject: Glen L 14 Centerboard I have a set of 14 plans and have seen your notes on using a steel plate in the centerboard. Why not use the same building method as the steel only the size of the lead piece and just pour in #9 lead shot from a shooting sport supply house, add some epoxy to hold it together and not have any rust problems ever? Lead shot usually comes in 25# bags. - Cliff Biggs Build more boats GLEN-L boats, of course
WebLetter Index
|