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Blue printing a cat hull
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Its time to test more props, does any one sell them and let you try them to see if there going to work out? I know i did that with my 1978 checkmate with a 200 2.5 merc. But props for that were 350$ and upComment
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32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) wasComment
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I let off so I don't have to go swim. But I have noticed it turns great about half throttle.
I ran the boat yesterday, my temps are from 70-85 degrees and that was after several nonstop full speed straight always. Are we thinking x646?Comment
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the most important part of sanding your sponsons is making the trailing edge sharp, also i've found that when sanding the gel coat, 300-400 grit is best I've even used 200, 600 is too fine. you don't want is too smooth, you want it a little rough to break the surface tension between the water and the hull, I've seen increases in speeds of 2-3 mph with just scuffin the bottom of the boat. what prop are you running? I have swung a 648 and a 646/3 with that motor on bigger heavier hulls so you should be able to do so with a MM with no problem at all.We call ourselves the "Q"Comment
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also how deep is your rudder? a couple of inches below the prop is fine, you will pick up some speed just from shortening the rudder?We call ourselves the "Q"Comment
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Mad mike
What cell count were you running? The rudder is 5" total I think it the longer speed master. And I'm thinking of ordering a x645 detounged. I'm also about building a twin cheeta
I would be real happy at 60mphAttached FilesComment
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I'm not totally sure it was worth any thing. Watch the videos, it ran 51.1 stock, now I'm back to 50.5. But for a few runs it was high 40s and I wasn't happy. I did close in the rear sponsons a little bit, I made them straight back and square. Before they tapered out just a hair at the transom. Maybe less drag? So I might try opening them a bit and see what it does. If nothing else this has been a learning experience.Comment
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this is the last test run after all the work the last set of pads are sanded fwd to aft with 400grit wet no temps above 83 on anything after a full 5min run non stop motor was the hottest. What do people use for Greese or oil on the flex? I'm using a super lube silicone Greese water proofComment
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