Need some help getting the right prop setup on my new boat.
07-10-2007, 09:33 AM
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Need some help getting the right prop setup on my new boat.
Hello, I have just purchased a 01 24'4 VIP VINDICATOR, Its powered by a 7.4 MPI, came with a 21" mirage plus, with this prop I am running 4100-4300 rpm@WOT and about 53-56mph(depending on trim and water conditions) on the gps. I traded for a 23" mirage, RPM stayed basically the same, but top speed dropped to around 47-50 mph. Neither prop has any toruble getting the boat on plane, even with full gas, and riders. Anyone have any suggestions of how to help gain some top end speed? I am still pretty new to all of this, so any response would be greatly appreciated. Thanks,
Johnny
Johnny
07-10-2007, 08:04 PM
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OK, The drive is a Bravo 1, 1:5 gear ratio(newly rebuilt according to the mechanic), I ran it again today, with the 23" mirage prop,(since The 21" mirage plus is MIA) I got 3950 max on the RPM gauge, and gps speed of 45.9mph.
07-12-2007, 10:07 AM
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It is obvious that the 23P is to tall for your application. You need to run at 4200-4600 at WOT so you really need to ruan at the minimum a 21P Mirage Plus , or a labbed 21P Mirage Plus or a stock 19P Mirage Plus...just to keep your motor happy and healthy.
Julie
Julie
