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  1. J

    Speed Plateaus at 5200rpm

    " top/comfortable speed increased to 34mph. The speed plateaus at about 5200rpm (max 6200). Since the engine is under 10 hours I've only had the rpm up to about 5800rpm." isn't this, as you stated, the original problem?....your speed stays at 34 mph starting at 5200 rpm up to 5800 rpm....and...
  2. J

    Speed Plateaus at 5200rpm

    I'd lower the motor. there's a gap at the top of the transom, so it looks like that might be possible? If that doesn't solve what looks like a ventilation issue, then I guess look a t the prop again..... The AV plate isn't parallel, but close enough..but looks like trimming the motor level will...
  3. J

    Help with trailer rear bearing replacement

    "When you take the hub off and punch out the rear bearings, the seal comes out as well" ....normal...I've never come across any setup that allows removing inner bearings without removing the seal.... ...as stated...the seal is to be flush with the hub....
  4. J

    Prop spin

    I guess mercury and evinrude are different. I don't have anywhere near that slack..
  5. J

    Prop spin

    his shaft is turning 35 degeess in both directions with the prop off, in gear., engine off....not good...
  6. J

    Prop spin

    not with my mercury....very little movement when in gear
  7. J

    Speed after adding 3rd log

    well....I'm no engineer...... but if you notice on new pontoons that they extend the motor pod back....especially with the tri-toons.... ....gotta be a reason for that...and I'm "as-u-ming" that it's because of how toons interfere more so with water to the prop, compared to conventional hulls...
  8. J

    Speed after adding 3rd log

    here's these people.... obviously, biased.....but an option to look at..... I've considered them myself.....my hesitation is wondering if adding this ..or a third toon....would raise my motor height and cause ventilation issues..... Fyi...I have a 24','06, twin tube, 25" toons....It had a 60...
  9. J

    Ipad Dash Mount? Quick Release?

    here's these two Co's....but in the sun, like stated...my iphone/ipad shut down pretty quick.... maybe a shade device....
  10. J

    1987 Four Winns Boat 16ft inboard would you Buy?

    It certainly looks cared for...including the trailer take it out and run it.......good...take it over it's own wake.... look for stress cracks in the gel coat everywhere... run every electrical device on it.......how clean is the engine bay...... certainly have a qualified expert examine it...
  11. J

    Speed Plateaus at 5200rpm

    your...right..I resign from fluid dynamics..... anyway so the question is..why is the prop losing its thrust after 5200 rpm. Isn't that called ventilation?.... ventilation is air getting into the prop.... I had a ventilation issue with my new motor when turning and trying to up trim...and I...
  12. J

    Speed Plateaus at 5200rpm

    the dimpled golf ball doesn't fly faster, it flies farther because the boundary air doesn't separate as quick which reduces overall drag. The force applied to a dimpled or smooth golf ball (weight and size being equal) would be equal if comparing apples to apples so the initial "speed" would be...
  13. J

    pontoon contamination

    yeah....I'm no engineer , but one would have to consider weight vs strength....how to connect the toons to the frame......impact resistance.... I wonder why the fiberglass "party" boats ( I think they were called) didn't catch on ? Fiberglass hulls with a pontoon deck style arrangement...more...
  14. J

    pontoon contamination

    thanks.... you would think so as it does come off easily with a wire wheel. toilet bowl cleaners work like the "toon" cleaners do, you just can't let it sit and dry on the toons..... I power wash it every spring and fall but unfortunately, even if I use the narrow stream nozzle.....which would...
  15. J

    pontoon contamination

    thank... the reason I asked was that the marina was worried it might be aluminum oxidation/galvanic,based on my description .....so I wanted other opinions... the toons aren't pitted....my pressure washer helps but doesnt remove much....Weather's too cold and time constraints for my labor...
  16. J

    pontoon contamination

    what kind of contamination would this be. The boat has only been operated in fresh water. I'm looking to put it in brackish water so the pontoons need painting. It comes off extremely easy with a wire brush, but the one marina thinks it might need soda blasting. They do light sanding. But with...
  17. J

    Raystown Lake 2023

    going in july...
  18. J

    Trailer surge brakes

    For cars, and generally speaking... disc brakes are less complicated, easier to service, easier to inspect, are more fade resistant, and more uniform, predictable , and more importantly reliable in braking pressure applied to each wheel simultaneously .... Plenty of accidents back in the day...
  19. J

    Low rpm

    doesn't matter what your hoping for. Your motor, which you now say is running properly and at the right height, is telling you that with that 17" prop....your rpm is too low..... there's no magic wand...
  20. J

    Trailer surge brakes

    exactly what I did. I battled my trailers surge braking system...new master cylinder and tongue assembly , new brake assembles(4), new timkens,...for 3 years after buying the boat and trailer . They grabbed, got hot, bucked , jerked...I bled, adjusted, double checked, triple checked....nothing...
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