Carefully remove one Bolt at a time and use a 1/4" drill bit to make a pilot hole (3 total), using the Spacers as a guide. Aug 23, 2004 5,672 3,285 Cali the state of confusion, the state of shock ... and shimming the strut, it should spin freely. It's for a slow speed semi-displacement boat, boat speed about 7 knots or so, prop speed only 1200 at full throttle, about 1000-1150 prop RPM at cruise. I've bent a few props over the years but never bent the strut or shaft. Reactions: tuner. If you aren't going to machine the struts, then I'd make some small shims that go under the strut. Once you determine the proper shimming, go ahead and apply your sealant and bolt the strut in place. Transom Trauma Boat transoms can be subjected to punishment on the road. TO MOUNT TO SHORT I-BEAM FRAMES: Bolt 3 Standoff Spacers to Strut (shim as needed), then clamp Strut and Spacers to Frame. The strut jig is adjusted to keep weight off of the shaft until the shaft turns freely. Did you drop the boat off the trailer? Shaft Struts, V-Struts What We Do Seaboard Marine delivers “Guaranteed Better Than Factory” Performance, Parts, Design, and Engineering for Cummins and other Marine Diesel applications. When Hatteras originally installed the struts on your boat, they used a mixture called poly-putty to mount them and align them. Remove Strut, enlarge holes to 5/16", and bolt the Strut-to-the-Spacers-to-the-Frame as shown. Be sure to recheck it after tightening the bolts, just in case. "Unsupported outboards in particular bounce a lot — the shock impact and flexing can damage a transom over time," Stuber says. The tapered shim just fills in the gap between the strut and the hull to make sure the actual angle between the engine/v-drive and prop shaft stay the same. MATTANZA old man of the sea, in training. ... spot on is tedious without a laser bore scope and can require many days of a few hours here and a few there to get the shim pads just right. 34 HP engine. Assume for my purpose it would be easier to shim than to go up in shaft size. Apparently the strut is glassed way up into the boat and the yard says it is a 36 hour job to fix it. At this point the strut base shows a slight gap at the inboard aft corner. 2. What is usually done is a good sized batch is mixed up, a big glob is put on the strut mount, the bolts are put in and tightened while someone slowly turns the prop. STRUT_ANGLE.jpg (Angle MUCH exaggerated for illustration) Once you figure out what angle you need (guessing 2-3-degrees), I'd machine the strut mounts and be done with it. More precise and will maintain the relationship between the strut mount halves. Once the strut was aligned and mounted the poly-putty hardened and created a kind of spacer or shim. At that point both jigs are adjusted until the strut is in nearly perfect contact with the hull, the shaft again turns freely, and shows even pressure within the cutlass bearing. We're talking about fitting an 18 x 14 prop that's bored out to 1-1/8", to a 1" shaft. Lower the strut, install a shim, rejack and recheck, repeat as needed.
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