Looking for Scarab 1
11-11-2016, 09:04 PM
#21
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11-11-2016, 09:21 PM
#22
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I have passed on several projects. I have been building cars and boats since the 70's and have pretty much hung up my DA.
Why the Scarab 1? I guess it is because I like the looks. Boats, like cars are very subjective. Different strokes for different folk's?
Why the Scarab 1? I guess it is because I like the looks. Boats, like cars are very subjective. Different strokes for different folk's?
11-12-2016, 10:31 AM
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I like the looks too, and they are rare in my area - especially the outboard version I have. This project will be great when done, but it does consume a lot of effort. Every time I think about the boat there's something else I want to do to it, but then circle back to remind myself these are not rocket ships to begin with.Matt
11-12-2016, 12:18 PM
#24
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No, they aren't rocket ships, but you could improve it somewhat. My old Superboat with a 200EFI 2.5L Merc ran 68 MPH on GPS. With the 300X and a sportmaster gearcase, it was close to 90. I ran 12"-13" of setback. I'm seeing high 50's reported with 200's on the Scarab, so there is work to be done.
One of the reasons the Challenger/Superboats/Shadows were so fast was due to the pad. When the boat was up and running, there was not a lot of wetted surface in the water. You could design a similar, albeit wider pad for the Scarab 1, but there would be tradeoffs. Falling off the pad with 21 degrees or more of deadrise is not for the faint of heart at high speeds.
If I had an outboard Scarab, I would add a setback jackplate with at least 10" setback to begin with. I would also knee brace the transom to the stringers.
One of the reasons the Challenger/Superboats/Shadows were so fast was due to the pad. When the boat was up and running, there was not a lot of wetted surface in the water. You could design a similar, albeit wider pad for the Scarab 1, but there would be tradeoffs. Falling off the pad with 21 degrees or more of deadrise is not for the faint of heart at high speeds.
If I had an outboard Scarab, I would add a setback jackplate with at least 10" setback to begin with. I would also knee brace the transom to the stringers.
11-12-2016, 08:47 PM
#25
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No, they aren't rocket ships, but you could improve it somewhat. My old Superboat with a 200EFI 2.5L Merc ran 68 MPH on GPS. With the 300X and a sportmaster gearcase, it was close to 90. I ran 12"-13" of setback. I'm seeing high 50's reported with 200's on the Scarab, so there is work to be done.
One of the reasons the Challenger/Superboats/Shadows were so fast was due to the pad. When the boat was up and running, there was not a lot of wetted surface in the water. You could design a similar, albeit wider pad for the Scarab 1, but there would be tradeoffs. Falling off the pad with 21 degrees or more of deadrise is not for the faint of heart at high speeds.
If I had an outboard Scarab, I would add a setback jackplate with at least 10" setback to begin with. I would also knee brace the transom to the stringers.
One of the reasons the Challenger/Superboats/Shadows were so fast was due to the pad. When the boat was up and running, there was not a lot of wetted surface in the water. You could design a similar, albeit wider pad for the Scarab 1, but there would be tradeoffs. Falling off the pad with 21 degrees or more of deadrise is not for the faint of heart at high speeds.
If I had an outboard Scarab, I would add a setback jackplate with at least 10" setback to begin with. I would also knee brace the transom to the stringers.
Matt
11-12-2016, 09:24 PM
#26
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Excellent!
Matt, is that an actual pad or just a flat keel? I have not crawled under one. The Superboat has a raised pad 6" wide. Too narrow IMO. When the design was further developed by Image (Team Shadow), the pad was widened to provide better stability. At 68 MPH, the boat would go through chop and handle in a very balanced manner. When I added the additional HP and weight, it grew fangs. I ended up going to a completely new setup with setback, height and prop. I had aluminum plates on both sides of the transom tied to the stringers with SS bars.
Matt, is that an actual pad or just a flat keel? I have not crawled under one. The Superboat has a raised pad 6" wide. Too narrow IMO. When the design was further developed by Image (Team Shadow), the pad was widened to provide better stability. At 68 MPH, the boat would go through chop and handle in a very balanced manner. When I added the additional HP and weight, it grew fangs. I ended up going to a completely new setup with setback, height and prop. I had aluminum plates on both sides of the transom tied to the stringers with SS bars.
11-13-2016, 11:05 PM
#27
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