Thread: Riva ride plate setup & results
09-27-2007, 09:06 PM #1
Riva ride plate setup & results
I've spent the last week setting up and testing my Riva ride plate. Please note, these are my opinions based on my setup and testing - others may/will have completely different results. My goal with the Ultra has been finding speed improvements without losing any of the good qualities of the Ultra (smooth ride and rough water handling).
When setting up a ride plate, proper fit is important. If it's off center, straight line tracking will be effected, If it hangs down below the shoe, speed will be scrubbed off. It took me about two hours of fitting to get everything lined up the way I wanted it. The gap that I used was 3.30mm at the ends. I fitted the plate to be about 1mm above the shoe. One picture shows the grinding that I did to achieve this fit.
Now for the results: although I picked up a bit of top speed (less than 1.5mph) the ski lost ride quality in anything other than light chop (less than 1ft.). I tested both with the wedge and without. I test on a long creek that has some really tight curves and long straight aways. The bad part with the Riva plate, - I could not take the tight curves @ full throttle. It felt like massive cavitation - almost as though the rear was pushing through the turn. With the stock plate, full throttle has been no problem.
If I was only concerned about top speed, the Riva plate would stay. Since I don't want to lose any handling, I pulled the Riva plate tonight and put the stock one back on with the wedge. Guess I'll wait and try the R&D plate.
09-27-2007, 09:22 PM #2
- Join Date
- Jan 2007
I have noticed some change in turn handling, but I have not yet tried a WOT turn. I notice a slight wobble, but nothing I cannot deal with.
I agree with the rough water, but with the wedge on stock plate I unhooked in the same conditions as I do with the riva ride plate. Cross waves, against the waves or any mixture of the two I could run hard, anything like Lake George the last time we were on it and it gets bad.
I have one more to buy for the LX and I will wait for R&D before I purchase another one.
09-27-2007, 09:29 PM #3
09-27-2007, 09:36 PM #4
You know I gotta ask......
How fast with the Riva plate?
09-27-2007, 10:16 PM #5
I've been talking with JW about some RPM loss. It seems that boost is down so I'm dumping the BOV for the block off. If I get time tomorrow, I'm pulling the intercooler and flushing it out good. We've also had a run of rainy weather lately - I'm hoping things dry up and cool down some.
09-27-2007, 10:29 PM #6
When you ran in the high 69's without the plate, I just knew you would
hit 71. I think mine may have it in her when I run this weekend. I finally sealed my plate so we'll see. When I blocked my bov, I didn't notice any gain but I did see consistantly higher rpm's. (7950-8050)
09-27-2007, 10:56 PM #7
09-28-2007, 12:19 AM #8
09-28-2007, 05:43 AM #9
09-28-2007, 07:34 AM #10
- Join Date
- Jan 2006
- Northern VA
Mike is in 72+ all day seating in every direction with full tank of gas.
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