Maximus throws blade at my SCX
10-18-2011, 07:32 PM
#31
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I hope it's a typo. But if you were spinning that prop at 6300RPM's what do you think was going to happen??
Mercury started using higher strength alloys a few years ago. They even had to re-tool because of the hardness of the metals.
When was the last time you inspected your prop? If there was any kind of ding or scratch caused by hitting the prop with a tool, rock, wood, etc., it could have caused a stress point on a blade. Centrifugal force at 6300RPM and it came apart.
There shouldn't be anything wrong with your props as long as they are worked properly (were they repaired?).
Include a visual inspection of the props prior to splashing the boat and check for loose nuts and proper torques on the drives on a regular interval. You would be amazed at what starts to come loose when we run the hell out of these things.
Mercury started using higher strength alloys a few years ago. They even had to re-tool because of the hardness of the metals.
When was the last time you inspected your prop? If there was any kind of ding or scratch caused by hitting the prop with a tool, rock, wood, etc., it could have caused a stress point on a blade. Centrifugal force at 6300RPM and it came apart.
There shouldn't be anything wrong with your props as long as they are worked properly (were they repaired?).
Include a visual inspection of the props prior to splashing the boat and check for loose nuts and proper torques on the drives on a regular interval. You would be amazed at what starts to come loose when we run the hell out of these things.
10-18-2011, 10:00 PM
#32
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10-18-2011, 10:01 PM
#33
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That's funny
What are you on about? These props are not meant to be surfaced, stress risers or not. Do you really think the prop was spinning @ 6300? The motor was. The words gear ratio comes to mind. Let's crunch a number for fun. 32" pitch @ 6300 rpm's with 10% slip. 172 mph!!!
The Herings will hold up better, but as with big hp Bravo style drives, it's on limited time.
What are you on about? These props are not meant to be surfaced, stress risers or not. Do you really think the prop was spinning @ 6300? The motor was. The words gear ratio comes to mind. Let's crunch a number for fun. 32" pitch @ 6300 rpm's with 10% slip. 172 mph!!!
The Herings will hold up better, but as with big hp Bravo style drives, it's on limited time.
Last edited by AIR TIME; 10-18-2011 at 10:05 PM.
10-18-2011, 10:07 PM
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10-18-2011, 10:35 PM
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The max with 5/8" cut off the tube bow rides very hi = short tube
The max with long tube bow hight is = to the P5X the boat rides a little flatter and the transom is higher. I had to settle the transom down(china) so I cut the tube now it ride great at WOT.
The P5X is a great prop... better low and mid performance by 8MPH.
The max with long tube bow hight is = to the P5X the boat rides a little flatter and the transom is higher. I had to settle the transom down(china) so I cut the tube now it ride great at WOT.
The P5X is a great prop... better low and mid performance by 8MPH.
Last edited by goebel1; 10-18-2011 at 10:39 PM.
10-19-2011, 04:46 PM
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thanks, I just started testing the saber and its all over the place. I have a konrad ace with a shortie. started at 3'' and it porpoised so bad. even with tabs all the way down the boat rode bow high. with a 1'' spacer its its a little better I think, we didn't run it much. I hope to try a full size lower to see if its better. other wise its balance. it was a hard porpoise.
