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  1. J

    Might this work as a backup?

    these are figures derived from 3 props I've used on my pontoon. It is a 24', twin tube (25") suncruiser with a '21 merc. 115 hp CT. Maybe this can give you an idea of what "propping " is all about. Diameter, pitch, blades all matter along with cupping, material, etc. as all mentioned above. It...
  2. J

    Lake depth and how shallow can you run?

    I don't think you're asking for trouble. But I/we can see the bottom of the hull where it disappears behind the left bunk. I can tell it runs parallel to the bunk and by "extending " that line out , it shows your hull is about 1-11/2 " above the cavitation plate. so, since you asked about...
  3. J

    Prop Question

    it's sad........hands are used to hold a phone 24 in 7, not to learn how something works. off topic, but, I'm just say'in,
  4. J

    Prop Question

    no, they don't.....they're too busy telling young kids that they aren't what they were born as.........
  5. J

    Help with prop?

    no...you are overpropped as stated. to increase rpm you reduce pitch, or diameter, or # of blades. yes, diameter plays as much a role as pitch. So, you go to an 11x8....or 11 1/4x8...maybe get 5600-5700 max rpm, maybe more...might be less... see what happens.....but you want to be no less than...
  6. J

    Help with prop?

    you understand that you are 500 rpm below the minimum of 5500. You are lugging your motor.
  7. J

    I am at the end on my rope with trying to install my throttle and gear selection linkage at motor.

    and what about this?
  8. J

    I am at the end on my rope with trying to install my throttle and gear selection linkage at motor.

    so...what is all of this for?
  9. J

    I am at the end on my rope with trying to install my throttle and gear selection linkage at motor.

    got it....hoping it could lead to something you can investigate further... I'm surprised at the multiple differences in and between the 1989 25 and 20 hp motors with the linkage ...... but, I wouldn't think merc used different cables.....
  10. J

    I am at the end on my rope with trying to install my throttle and gear selection linkage at motor.

    and this is the 20 hp. It show's different arrangements just for its motor.
  11. J

    I am at the end on my rope with trying to install my throttle and gear selection linkage at motor.

    I'm seeing multiple configurations for the 25 hp motor. Including a remote control attaching kit.. I have no idea if this is your problem, but maybe look into it.
  12. J

    I am at the end on my rope with trying to install my throttle and gear selection linkage at motor.

    I'm not on facebook. Is the throttle bracket on the 20hp the same as the bracket on the 25hp?. I'm just asking, 'cause I'm not there....I would assume there is no difference, but I've learned to double check everything..
  13. J

    I am at the end on my rope with trying to install my throttle and gear selection linkage at motor.

    so, is this the stock configuration that came with the boat? or is this something being replaced? if so, is there anyway the cable is wrong?
  14. J

    Engine support while towing.

    yeah...they're transom savers, not TT savers, or outdrive savers.
  15. J

    Engine support while towing.

    aluminum pontoon transoms don't like excessive flexing either
  16. J

    Engine support while towing.

    it's the transom that's taking the brunt of bouncing and flexing when trailering. That's why they're called transom savers. If the motor could be balanced evenly over the center of the transom and kept there, and the transom was exactly vertical, you probably wouldn't need anything, except for...
  17. J

    Engine support while towing.

    I've got a '21 merc 115 hp, CT motor. I'm sure your 90 weighs close to mine. Previously had a merc 60 on my pontoon and didn't use a transom saver, never really noticed it bouncing much. But this 115 bounced like crazy, so I use a transom saver. I also learned not to use the tilt lock for...
  18. J

    2.75's are they just bad designs?

    yep..good luck with that. It Just depends on your goal. you can tweak, but that can get expensive. ahicks is right. When I went from my 60 hp to my 115 hp, I only gained 6 mph. But I did get the tube hauling performance I wanted, but at a significant gas cost.... I tore up my 3 blade, 16x12...
  19. J

    2.75's are they just bad designs?

    ok..well...so the plate is below the motor pod but just wonder if that 3/4 center toon is causing flow issues. If it was me, Id be trying to see where the plate is in relation to the water when at speed. Anyway. these are my #'s on the props I've run. 24', twin tube(25"), '21 Merc 115 CT. Dealer...
  20. J

    2.75's are they just bad designs?

    I've tried to find your specific model. Is it a tri-toon?
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