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jetskier · 05-31-2005, 09:08 PM

You are correct! My bad. At 215 hp both of these are going to be very fast right out of the box. My guess is that they will push 70 mph and that is very fast on a PWC.

I looked at the Riva webpage and there appears to be two ways to do this. They show a block off kit to fill the void in the event that you completely remove the OPAS. This seems to cost on the order of about $300. The second method is to use a spacer. In this case the fin is held in the retracted position under all conditions. I originally used an aftermarket aluminum billet part that fell off. I then decided to make my own out of PVC tubing. I cut to the same length as the aftermarket part, filed a notch in the top and filed a groove around the waist of the part. I secured the spacer on the shaft with a cable tie. No problems so far! Riva seems to have a part for about $19.

05-31-2005, 09:08 PM	#2
jetskier Senior Member Join Date: Apr 2004 Location: North Reading, MA and South Down Shores Posts: 851 Thanks: 57 Thanked 183 Times in 114 Posts	You are correct! My bad. At 215 hp both of these are going to be very fast right out of the box. My guess is that they will push 70 mph and that is very fast on a PWC. I looked at the Riva webpage and there appears to be two ways to do this. They show a block off kit to fill the void in the event that you completely remove the OPAS. This seems to cost on the order of about $300. The second method is to use a spacer. In this case the fin is held in the retracted position under all conditions. I originally used an aftermarket aluminum billet part that fell off. I then decided to make my own out of PVC tubing. I cut to the same length as the aftermarket part, filed a notch in the top and filed a groove around the waist of the part. I secured the spacer on the shaft with a cable tie. No problems so far! Riva seems to have a part for about $19.