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Old 03-13-2017, 07:04 PM
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Originally Posted by bbladesprops
Really, who at Mercury Racing told you that?
If Mercury Racing told you they grind out a hollow to add cup, Mercury Racing was mistaken in your question. I can promise you that unless something we developed over 2 decades ago has changed. And that is not the case.
You can bend and shape #3,4,5,6 drive propellers to some degree. It takes knowledge, background and talent. Some of that may have been lost or is being changed for easier production. But, it can be done.
Let's face it, the custom propeller ability is a fading art. Look at Mercury Racing, they don't offer custom propeller work anymore like when Dennis and I were managing the Laboratory. They offer one size fits all options now.

All the custom propellers we build at BBLADES come to you with 90 years of experience molding a handcrafted one off, if necessary, product.

Brett
I got that info from mercury racings website.
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Old 03-13-2017, 07:26 PM
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That's Andy and Mark in the photo . That's a pic from 12 years ago. Cool, I remember those days.
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Old 03-13-2017, 07:27 PM
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Oops I think it was 15 years ago..........
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Old 03-13-2017, 07:33 PM
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Originally Posted by bbladesprops
That's Andy and Mark in the photo . That's a pic from 12 years ago. Cool, I remember those days.
Thats probably around the time my buddys 17.75 28p four blade props with mercury lab finish were made. He had a set of 17.5 or 17.75 28p five blade props you reworked for his 38 cig a few years back. Those five 5 blades took a mile or two to even get the boat to lay over they blew out so bad. He tried adding spacers, switching prop rotation, nothing was helping. He bolted on those four blade merc props, boat planed off like a tournament ski boat, handled better, and gained a little top end with no cruise loss.

They must have done something right back in the good old days.
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Old 03-13-2017, 07:56 PM
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Yes we did some great stuff back in the past at that lab. Times have changed. I'm still a 4 blade cleaver fan. I would love to see those castings come back. And, would have voted to keep them in the line up in smaller inventory levels. There are still hulls that prefer that geometry.
Some old girls just don't like the stern lift the additional blades give those big V's no matter what you do.

Brett
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Old 03-16-2017, 10:05 PM
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How much pitch can be added to a prop? 17.5 x 24.... What can that be made into?
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Old 03-17-2017, 03:29 PM
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Originally Posted by bigboat28
How much pitch can be added to a prop? 17.5 x 24.... What can that be made into?
It depends on the prop.
On performance propeller for out boards, Bravo drives and #6's, you can not bend the root of the blade or 1/3 to 1/2 of the blade out from the root. It is stationary. Post that you are adding twist to the blade so the geometry is altered. It may not perform as a actual produced pitch prop will perform.
We do not recommend more than 1 inch.

Now if were talking 36 inch cruiser props, the answer is different.

Brett
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Old 03-18-2017, 11:37 AM
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Rolla 4 blade 19 spline????
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Old 03-19-2017, 07:13 PM
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Originally Posted by bigboat28
Rolla 4 blade 19 spline????
Rolla props are super thick.
1" maximum and pounds of metal has to come off the casting to make it happen.

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Old 03-19-2017, 07:22 PM
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So are you avoiding against Rolla props?
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