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Originally Posted by peterunwin
(Post 3786500)
Hi Smarty,
I would usually do before and after comparisons but logistically as we are in England and i needed the bare castings to check wall thicknesses before i did the reprofiling this just wouldn't work for me, but if i've got it wrong i'm pretty handy with a welder:D Peter |
Originally Posted by Coolerman
(Post 3784865)
Beautiful work!
Just curious on your on thoughts regarding the trailing edge, whether to have a square edge or sharp edge? Also, did you do you anything to offset the symmetry of the skeg because it is a single engine application? |
I would love to see pic's from forward an from the back (stearn) LOL I did the same an it did help keep a bravo loaded on getting on plane with a ITS. XR I think. It's was in 03 LOL. Artie
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awesome project! thanks for the pics!
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Yes, this is the first SV29 built with an Ilmor package. We are excited to see this build come together. I will post some pictures as the boat comes along.
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5 Attachment(s)
A few more shots of the almost completed lower unit, i will leave the final sharpening of the edges until the drive is installed on the boat as there is a possibility that it could get a few marks in transit.
Peter |
Very nice work but clearly some of the effort you put in is from an esthetics stand point since the underside of the cavitation plate will be well out of the water once at speed. Wouldn't you agree? Looks great even if it doesn't yield you 1mph. I didn't notice nor measure any real difference in my profiled lowers. I was told high speed steering stability would also benefit from this process. Again not something me the NON-RACER was able to notice but I don't think one can go wrong cleaning up the surfaces to make them smother & symetrical.
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Originally Posted by NASCAT
(Post 3787732)
Very nice work but clearly some of the effort you put in is from an esthetics stand point since the underside of the cavitation plate will be well out of the water once at speed. Wouldn't you agree? Looks great even if it doesn't yield you 1mph. I didn't notice nor measure any real difference in my profiled lowers. I was told high speed steering stability would also benefit from this process. Again not something me the NON-RACER was able to notice but I don't think one can go wrong cleaning up the surfaces to make them smother & symetrical.
Totally agree that the under side of the cavitation plate will gain no speed but as the boat will be run in salt water mostly the better finish that you put on the lower unit the less corrosion you get and it is much easier to keep looking nice with a bit of WD40 and a scotchbrite pad every time you come out. I have also done the sides and top of the cavitation plate for the same reason, plus it has quite a nice "bling" factor.... Peter |
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Looks great. Normally the lower is painted ILMOR silver from where it begins to flair out towards the cavitaion plate all the way to the top side so it matches the upper which is also Silver. My WCM profiled lowers shown here.
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Originally Posted by NASCAT
(Post 3787732)
Very nice work but clearly some of the effort you put in is from an esthetics stand point since the underside of the cavitation plate will be well out of the water once at speed. Wouldn't you agree? Looks great even if it doesn't yield you 1mph. I didn't notice nor measure any real difference in my profiled lowers. I was told high speed steering stability would also benefit from this process. Again not something me the NON-RACER was able to notice but I don't think one can go wrong cleaning up the surfaces to make them smother & symetrical.
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