Art It flexes a bit if I put my weight on the lower end of the motor. Go to a salvage yard, scrap metal place or a fab shop and look for a pice of aluminum angle as heavy as 1/4 in.X3''X3'' or bigger if you can find it . When pulling off the transom, the high stress areas are the inside corners of the gunnels. The stringers I'll be replacing are only about 6-7 feet long. The motor is accessed through a hatch in the cockpit that leads to essentially an aft lazarette, whose after wall is the transom where the motor is mounted. On average, HP to HP, an outboard will be about 5% faster. For the best location, a pylon mounted in front of the motor, to the stringers. Drill 2 holes to match the top mounting of the motor with angle being on the inside of the transom. I maybe wrong and stand corrected as im still a beginner and i will listen and take all your help and advice from the old timers and guys with experience. The bigger the better on the backing plates to spread the load. O/T headers present problems with any ski rope, even distraction that could lead to … Big mistake. Only down side is that I'd have access ability issues under the deck. , build from UV resistant solid boards that are made out of 100%-"green" recycled-plastic. The thought that I might want to add a larger motor to the boat in the future led me down the path of knuckle-headed-ness. I was just looking through the restore forum and saw a pic where the motor pushed holes in a transom, dunno if it was overpowerd, but something to think about. Convert a Bow Mounted Trolling Motor to Transom Mount bracket HASWING CAYMAN. Or maybe just get a transom saver for towing. Boards for Platforms(Generally at least 18" wide) will not absorb paint, stains, oil or water. Make it as long as the straight part of the transom . No the outboard is not supported by the trailer. If one were to put a larger than rated motor on the boat there would be pressure and stresses applied that may be over the acceptable range for the boat and serious damage could occur. These days there does not seem to be a huge weight difference between a 9.9hp and 20/25hp motor. Swim Platforms all custom made to your Œspecifications and can be curved to match any boat transom. Drill the holes for the motor mount through the transom and the two motor boards so the mount is centred on the doubler's. Today we start working on the structural portions and re-enforcing the fiberglass transom. This is why im wondering if a bigger motor without all the heavy additives like power trim and such would get me comfortably on plane and cruise at 17kn. I'm also interested in quiet operation hence, I'm thinking, taking a continuous 10hp from a 20/25hp motor is a lot quieter than a 10-15hp WOT. So if you want my advice. Some boats make better candidates than others. Why does it need reinforcing? The effect of the extension of the vessel hull below the waterline optimizes the performance of today's powerful outboards. The motor (Mercury 50 HP) could not get me on plane. How do you reinforce a fiberglass boat transom? It's not easy to do this after the boat is built so I have to decide and add the backing before the seats get glued on. If you’re restoring the boat or you are unsure, check with a professional fiberglass repair person to see if you need to reinforce your transom to accommodate the bracket. My old C25 did fine with the factory installed motor mount. Other than weight, you need to consider added thrust aginst your transom. What you will find is NO DEALER will hang it. Stick to the original design, if the transom is 1" thick, rebuild it 1" thick. Currently I have a swing up/down kicker mount that is placarded for a max of 30hp/169lbs. I did that on my old V20 using starboard and angle aluminum to reinforce the seat. At the end of the 2014 season, I noticed that the bottom edge of the motor mount bracket was starting to dig into the fiberglass. When the boat was designed the transom and structure such as stringers and bulkheads were all designed with a certain power limit applied to them. To me, if you are going to sell a brand new package deal even with a cheap boat, it should be able to be operated with that motor package without compromising the transom. If your bed falls off your truck you can walk, if the back of your boat falls off, you have much bigger issues. They are afraid of the liability. The transom will be 3 layers of 3/4 coosa or wood. A big source of discomfort there---and it will not go away if you change the way the motor is mounted---is the way the motor is mounted. On the bow is a 12v 55lb Minn Kota trolling motor that you can fish all day with. No I didn't reinforce bracing between the stringers and transom. Often a wide metal plate will adequately reinforce the transom but the problem can’t always be fixed with that simple solution. Again, I have a 30, don't know how much bigger/heavier the 40 is, but if you only clamp for stability not solidity you should be fine. A good way of keeping the line tight is to fasten it to the mold or frame forward, run it through the It's hard to tell in the pics, but is the transom just a single sheet of 3/8" with a clamping board in the middle and no knees? I intend to run epoxy resin and 7 layers of 1708 on the inside transom skin and 3 layers of 1708 on stringers. The problem with a lot of these designs is if they have been around for a while then they were designed to be used with lighter 2-stroke motors. Whatever your choices, the end result needs to fit well, be properly finished and securely attached to the aluminum hull. Is there anyway to reinforce this, short of a costly transom rebuild? I think I will add a 2-3 HP motor or maybe a trolling motor just as a back up. This book has a LOT of info on fixing up boats and has a good section on transom replacement. I discarded a 40 year old diesel also, and installed a 27kg Tohatsu M9.8B two-stroke motor on the transom. 2004 Yamaha transom bracket. You may be able to add in a horizontal "seat" over the existing motorwell and use a removable vertical "backrest" when the motor is down. Reinforce the transom with a backing plate as wide as possible and reinforce the transom to the sides and bottom via knees. Drill a hole through those points and install a very tight thin steel line. I have an 1986 Bayliner cuddy (notorious for soft transoms) with a 125 Force O/B, all in great condition, except for some weakness in the transom. Spring, 2015. "Also, adding another outboard can add too much weight to the stern, or the transom might not have enough width or structural support to accommodate another engine." A little flex in the transom is not a bad thing – all boats have it to some degree. What can I do to reinforce my transom? Oars are not always enough in the big winds that sometimes blow up. I’ve never been checked on the water on what size my boat was rated for. I am thinking of a 75HP motor. Mark the cracks and see if they get bigger before getting extreme. Aluminum brace may be easier. I want to get a bigger motor to get me on plane. The right bottom bolt area, it got pushed in a … The only problem I had with it was that transom. I managed to crack the transom with it, maybe by bumping it while I was moving it on the trailer in the yard. When I'm motoring I usually raise the rudder and center the motor up close to the rudder/center on the port side and I haven't had to tighten it down to where the transom flexes or bends to keep it stable. Positive Flotation Outboard Brackets are among the finest outboard mounting systems in the industry...setting the standard for outboard propulsion worldwide. A 150 and a 200 might weigh the same, but the 200 will push allot harder. Our starboard transom has a large percentage of wood rot and delamination from the outboard screw being over tightend and breaking through the fiberglass. They seem pretty solid everywhere except where the motor mounts we're bolted through. Sometimes the rear point is below the transom, in that case, clamp a batten to the transom and measure. With motor raised, what is possible? Transom Replacement With a Plywood Core: This tutorial will focus specifically on the most common type of transom job; how to replace/rebuild a plywood cored transom. If so I would definitely add some support before going with a bigger motor. Swim platform split in half and on either side of the outboard. That said when I wanted to go bigger on my Skeeter I couldn’t find anybody who cared. The DNR I talked to sure didn’t. Armstrong Brackets. If you want to go from a single to twins for offshore safety, that issue is hardly relevant today. Of course, all designs are different, but the best way to reinforce a transom is from the inside, where it counts. An aluminum jon boat with a wood transom that needs replacement means possibilities, such as making the transom taller to accommodate a long-shaft outboard. I haven't configured a suppot system that would reach from the lower unit to the trailer without dragging while traveling IE when leaving a pitched entryway (gas station driveway). 4.5 out of 5 stars (2) 2 product ratings - Convert a Bow Mounted Trolling Motor to Transom Mount bracket HASWING CAYMAN. The transom will also get another reinforcement piece where the motor could attach. $119.99. Transom connected to stringers with glassed over wood. Following… I did empty the water balast, and raised the center-board and rudders, and lowered the sails. When the boat was hauled out and I took the bracket off, I saw there was a slight crack all along the bottom edge where the bracket was, and the back of the transom itself had pushed in by as much as 1/4". Hello, I have a standard sort of motor mount on my Capri 16, mounting a 4 horse 2-cycle. $46.83 shipping. Reinforcing it is a very short term fix if at all, don't risk your motor and other, more important things things like safety, for a cheap fix. In the past I had seen some on YouTube that had some issues with the plastic transom when using a small gas engine as well. The port side has a bigger 13-gallon fuel tank. This would depend on whether the motor raises without hitting the horizontal seat. I have seen it done a few times, it’s really a cool project. I did have extra weight on board. So, if you buy the motor and hang it yourself you will be OK. We will show step by step the entire process using materials and techniques proven over many successful rebuilds. Can your transom take it? The holes in the transom reinforcement, didnt line up to well because of the added layer in thickness. They installed some knees and made the transom twice as thick to stiffen everything up. Look at your plans, it should be clear. I will likely nonetheless reinforce the thickness of the inside of the hulls in the areas where the mounts would attach by glassing in some marine plywood. Considering how cheap it would have been for them to reinforce the transom I was surprised they did not do it before. I just completed doing a ten day cruise with my macGregor 26X on the Chesapeake. 31 watching. FabulousPhill said.. Hi Am trying to fabricate a jetski stand on a 2006 princess p45 platform , just wondring about the size and weight cuz the princess user manual doesn't reflect any of it. $15.00 shipping. 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Who cared the seat reinforce a transom is from the inside transom skin and 3 of!
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