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Well added a new tech and made another run. Starboard tech is pretty close @4100 at full throttle 56 MPH Port is off it maxed @ 4500 at full throttle 56 MPH. So either I have a miss match on props or Starboard engine not making full power. While at full throttle I could pull the port back to 3/4 to get it to hook same rpm. Like it is pushing harder. At half throttle they are the same. I did check and the timing is the same and the blade are full open. BBlades the numbers are stamped into the nose where the spline bushing pushes in. I can't find a mark anywhere else. What do you suggest? theses are 425 hps mild build in a 38 scarab this boat should run 10 mph more, or close.
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We can inspect the props to determine differences. I'm betting they are not matched.
Brett |
So, in a couple of weeks, if I sent them to you, what would you charge to check them and tell me what they are? If I buy new props I would want to list / sell those to someone, who could use them, to help offset the new props. What i'm looking for are the most effecient at cruising and top end.
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Visual and mechanical inspections are free. We should be able to answer most all questions via that route.
Computer aided MRI inspectins are $150 per propeller set. Brett |
Well before the end of september they will be heading your way!!
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they look like the mach 1 sterndrive discontinued props,that boat stock should be able to pull 22 pitch 4 blades to 4800 5000 rpm if engines were built with the right marine parts not a street cam..do it all the time,wes/proboat marine
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Originally Posted by proboat-wes
(Post 3765439)
they look like the mach 1 sterndrive discontinued props,that boat stock should be able to pull 22 pitch 4 blades to 4800 5000 rpm if engines were built with the right marine parts not a street cam..do it all the time,wes/proboat marine
But, your right they have similarities. Not sure. When those props first came out there were a variety of differences. Brett |
Trim
Originally Posted by bbladesprops
(Post 3765050)
The numbers you supplied are not common numbers.
These are not BBLADES or Mercury numbers. Are they hand stamped or cast in? Using a average of 4950 rpm, the props are staying hooked up. After fixing the guages, getting new numbers will help us. It does look like you will need sless pitch. Brett |
Muscar311
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In case you are interested Autometer makes Pro- Comp Marine gauges and you can contact them at these numbers: Sales 866-2486356
Service 866-248-6357 Ask them for the marine cat. Dont forget what I said about not hooking the sync. back up ,there is a possibility you will screw the new tachs up if you do. Jim |
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