Bought engines today VV
04-30-2009, 01:16 AM
#501
Crazy Energy
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vv,
Let me know what props you wind up with.
I just got mine going .I want to get the bugs ironed out and get the boat dialed in for speed.I ran the boat last year in a run with velocity. Steve said the boat could run over 100.
I think if i work with my tow a little maybe flip my props around it might get there .At 92 i had more stick but she was squirrly and ididn,t want to damage the boat
Let me know what props you wind up with.
I just got mine going .I want to get the bugs ironed out and get the boat dialed in for speed.I ran the boat last year in a run with velocity. Steve said the boat could run over 100.
I think if i work with my tow a little maybe flip my props around it might get there .At 92 i had more stick but she was squirrly and ididn,t want to damage the boat
04-30-2009, 01:21 AM
#502
Crazy Energy
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Have you been out yet this season?
Last edited by Velocity Vector; 04-30-2009 at 03:44 AM.
04-30-2009, 07:26 AM
#503
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04-30-2009, 07:30 AM
#504
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Make sure that when you test , you trim up enough to get all the rpm's out of those props . Trim settings on Velocity's are everything when it comes to squeezing out speed and rpm . 
04-30-2009, 08:55 AM
#505
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04-30-2009, 12:51 PM
#506
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Here's the formula Bill,
RPM divided by Gear Ratio, Times prop pitch, divided by 1056, equals theoretical speed. Then apply slip factor.
Here's the math Bill, at the 6000 rpm.
6000 div by 1.50 = 4000, X 32 = 128,000, div by 1056 = 121.21 mph as theoretical top speed, then multiply by .90 = 109.09 mph at 10% slip. @ your 6200 it is 112.727 mph.
That's how it works! Basic math. Course if you're mathameticaly challenged you can run it thru the Bam Speed Calculator ......... and get the same answer.
RPM divided by Gear Ratio, Times prop pitch, divided by 1056, equals theoretical speed. Then apply slip factor.
Here's the math Bill, at the 6000 rpm.
6000 div by 1.50 = 4000, X 32 = 128,000, div by 1056 = 121.21 mph as theoretical top speed, then multiply by .90 = 109.09 mph at 10% slip. @ your 6200 it is 112.727 mph.
That's how it works! Basic math. Course if you're mathameticaly challenged you can run it thru the Bam Speed Calculator ......... and get the same answer.
Last edited by RaggedEdge; 04-30-2009 at 12:53 PM.
04-30-2009, 01:06 PM
#507
Crazy Energy
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I have learned instead of changing props just buy the biggest size then add Horse Power to get the speed you are looking for.
Last edited by Velocity Vector; 04-30-2009 at 01:34 PM.
04-30-2009, 02:38 PM
#508
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Here's the formula Bill,
RPM divided by Gear Ratio, Times prop pitch, divided by 1056, equals theoretical speed. Then apply slip factor.
Here's the math Bill, at the 6000 rpm.
6000 div by 1.50 = 4000, X 32 = 128,000, div by 1056 = 121.21 mph as theoretical top speed, then multiply by .90 = 109.09 mph at 10% slip. @ your 6200 it is 112.727 mph.
That's how it works! Basic math. Course if you're mathameticaly challenged you can run it thru the Bam Speed Calculator ......... and get the same answer.
RPM divided by Gear Ratio, Times prop pitch, divided by 1056, equals theoretical speed. Then apply slip factor.
Here's the math Bill, at the 6000 rpm.
6000 div by 1.50 = 4000, X 32 = 128,000, div by 1056 = 121.21 mph as theoretical top speed, then multiply by .90 = 109.09 mph at 10% slip. @ your 6200 it is 112.727 mph.
That's how it works! Basic math. Course if you're mathameticaly challenged you can run it thru the Bam Speed Calculator ......... and get the same answer.
04-30-2009, 06:12 PM
#510
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