quote:Originally posted by HGTGPR: Guys,hi. New to the forum. Recently purchased a pre-owned 2001 GP1200R (from Riva) with a Riva handling kit installed (impeller, intake grate, ride plate, extended trim tabs). Have the same porpoising problems. Can quiet it down by setting trim all the way down (nose down). Would this be indicative of too much rear lift and would shimming the ride plate be the way to go? Thanks in advance for your suggestions.
I would suggest shimming the rear two bolts with washers or trying the stock ride plate for rough water conditions unless you go to mechanical trim tabs.
Posts: 1830 | Location: Minneapolis | Registered: January 01, 2001
The only thing about more washers under the back of any ride plate we have found is it just pushes the GPRs nose lower into the water and then it starts plowing and losing mph in speed big time. And mechanical trim tabs used for porposing I always thought were like the reset button on a computer, once its out of control hit the panic button and shut it down. Although at $873.44 a set from R & D now days you could buy two computers for the price of one set of R & Ds GPR panic button. Isnt there a company out there that can solve the porposing problem of the GPR without customers so unsatisfied that they attempt experimenting on planing angles of there ride plate by adding washers under it? Why havent they done their own R & D to get the angle correct right out of the box in the first place, thats what I thought we were paying them for? And whatz-up with Yamahas R & D department, they have had four years to solve the GPR porposing problem, if they cannot solve the hull angle problem of the GPR then I think its way above and beyond the time to pay someone that can because my GPR rides like I am in a rodeo all the time?
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