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  1. #1
    Hydrotoys's Avatar
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    Aggresser PWC Sponsons

    Anybody use these on a GPR before?

    How do they handle? Porpoising issues? Fit/finish?

    Do they pull away from the Bplates, like Riva sponsons?


  2. #2
    JD 1's Avatar
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    have them on my 1300 and they are very well built and are very strong but they are not the best in the handling dept., I dont think they will help porposing

  3. #3
    Hydrotoys's Avatar
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    Thanks JD,
    I was more concerned if they actually cause porpoising.

  4. #4
    Marcus give me a ring

  5. #5
    Hydrotoys's Avatar
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    Found these at Parker Yamaha and decided to try them.

    My opinion:
    1. They are not spaced out enough from the hull...too much angled inward.

    2. They weren't drilled correctly.
    -The port side was about a half a screw off.
    -The starboard side was about a half a screw off on 3 screws and about 1.25" off on the third hole back.




    3. They use the 4 bracketry bolts for attachment, instead of the sponson bolts. This is a pretty good idea!

    4. The blades are much thinner than the Riva blades, but are about the same size .



  6. #6
    cfgp927's Avatar
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    sponsons

    Mark,
    Are you going to try those blades with the Riva backing plates?
    Mike

  7. #7
    Hydrotoys's Avatar
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    I'll try this like this, then with the riva backing plates.

  8. #8
    Moderator Insanediego Joe's Avatar
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    Thats one big ugly hand!

  9. #9
    ABBOTT's Avatar
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    you would think that the inward angle would leave the boat more prone to sliding around in the turns wouldn't it??? I like the idea of those sponsons on the riva back plate to get the angle and spacing right.

  10. #10
    Hydrotoys's Avatar
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    John,
    I don't think they ever tried them on a GPR. One of the mounting plates were drilled, close, and the other was over 1.25" off.

    It appears to me, they got some info over the phone, and made them up and sold them. The angles are all wrong, but the plate itself is awesome. This is just like what I have on my blue boat. I have Riva backing plates with Carbon Fiber blades...and they are the best sponson I've ever used on the gpr.

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