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Thread: The Black Pearl P Sport Hydro 2017

  1. #241
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    I used to think of that old Whip like it was a Kenworth. Just plowing through what ever what was in front of it. Chop, wind, buoy, ducks, other boats. Come'n through!!!
    Noisy person

  2. #242
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    My boats are like me HEAVY I make up for it with my great driving skills LOL LOL some more.

  3. #243
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    Too light a boat makes it difficult to handle any water issues. Even coming back and hitting your own wake can be an issue.

  4. #244
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    I'm not going to argue. Some of my best race boats are tanks. They plow through the rough stuff and are always right side up at the end of the race!

  5. #245
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    I think the key is to get that weight at the right spot. There's a big difference in turning ability between a heavy boat with weight all over, and a heavy boat with weight all at the CG.

  6. #246
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    Agreed. Putting a bunch of weight in the back and counterbalancing it with weight up front just makes a see-saw. The boat will porpoise badly!

  7. #247
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    So another question on the Black Pearl (love the name) where is the CG.

  8. #248
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    Sorry brain freeze ...Been away for two years I know were CG is

  9. #249
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    I've read all 620 posts on the 5.7 . I have a castle 1515 1y how does it compare to the neu 1515 1y ?

  10. #250
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    Tyler races that on the regular. They're pretty good.
    Noisy person

  11. #251
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    Thanks that will save $$$

  12. #252
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    Watch for a sale on Black Friday or around Christmas on the combo 1/8th Sidewinder and Castle 1515 1Y motor. ESC converts well to a good stock speedy control. Good for Limited class racing.

    Quote Originally Posted by donthavta View Post
    Thanks that will save $$$
    Nortavlag Bulc

  13. #253
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    My CG is 1-1/16" away from the back of the sponsons.

  14. #254
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    620 posts! What in the world could we possibly have been talking about!?

  15. #255
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    thanks I would have been at sponson back

  16. #256
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    The 620 doesn't count this years

  17. #257
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    Well, I have now read the 256 posts for 2017 ! have taken lots of notes . Have dry fit my 5.7...ride pads all 5mm , stick built nose with 1 inch Will use foam for round glassed (Thanks to Terry ) .does the Air dam work ? looks like 1/4 stock ,is one side longer then the other ?

  18. #258
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    Air dam? Are you talking about the AOA adjustment in post #211? Yes, it works, but I don't think it's necessary. John Gross has that boat now. It runs very well.

  19. #259
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    Yes ,thanks ....my build will start late this week. Ron

  20. #260
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    Quote Originally Posted by CraigP View Post
    Agreed. Putting a bunch of weight in the back and counterbalancing it with weight up front just makes a see-saw. The boat will porpoise badly!
    Strut is adjusted too deep causing front sponsons to ride without angle (too wet). This can also happen to a lighter weight hull if strut is set too deep.

  21. #261
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    Quote Originally Posted by TRUCKPULL View Post
    Pete
    I got mine running at 70 with NO added weight.

    Larry
    What prop you use to do that like a 47 or 50?

  22. #262
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    Well yeah but it's all over the place. In fairness though, that's probably Larry's fault.
    Noisy person

  23. #263
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    Quote Originally Posted by detox View Post
    Strut is adjusted too deep causing front sponsons to ride without angle (too wet). This can also happen to a lighter weight hull if strut is set too deep.
    Too much rake in the prop, especially on light hulls, can also cause these symptoms.

  24. #264
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    Quote Originally Posted by Moonie View Post
    What prop you use to do that like a 47 or 50?
    Antonio

    The hull that runs 70mph is one of the old 5.7 kits
    This build and hull is a lot heaver then the new light weight kits.
    It also has some of my own mods built in.

    It is a full "P" setup
    NEU 1515 - 1Y - 2200KV
    Two 4S - 5000's 65-130C
    Castle Hydra 240amp
    Timing set to 15 Degrees
    ABC - 1815 -17 -45

    Build thread:
    https://forums.offshoreelectrics.com...10-Black-pearl

    Pictures
    https://forums.offshoreelectrics.com...p?albumid=1364

    I have since changed the turn fin, to make the hull more steady and run true without pulling to the right.
    Also had to replace my drive tube, due to a dent in it that I did not notice, - lost two shafts at the last race.

    Larry
    Attached Images Attached Images
    Last edited by TRUCKPULL; 11-29-2017 at 01:06 AM.
    Past NAMBA- P Mono -1 Mile Race Record holder
    Past NAMBA- P Sport -1 Mile Race Record holder
    Bump & Grind Racing Props -We Like Em Smooth & Wet

  25. #265
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    Larry, what are the pertinent restrictions for P Sport? I have a 2310kv TP motor and two batts like yours.

  26. #266
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    No restrictions for motor in P Sport. Spec is 36x60 mm


    Sent from my iPhone using Tapatalk

  27. #267
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    2310 is pretty hot. Which motor is that? 4070? It could work with a small prop. The 1515 runs warm too at 2200kv.

    For me, I prefer a few less kv with more blade in the water but results vary depending on which boat you're running. Some boats don't like a big blade. The Pearls do pretty well on 45mm props. A 45mm on a TP2310 will likely come in hot on the oval. Zip zip playing around it will work fine though.
    Noisy person

  28. #268
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    It’s a 4050 TPP motor. Heavy hull, about 10.5#, so I figured a bit more motor bog... Yes, M445 is the best prop. And you are right, it is very hot heading into the corners! I have to back off throttle at same time I slam the rudder right. Scrubs off some speed by the apex, then more slowly straighten out while feeding back to full throttle. It’s a handful... I’m waiting on a mixer to install in the boat to handle that rudder/throttle ballet dance. Hopefully I’ll be able to put more attention to the track.

    I haven’t even tried turning full throttle, just feels like a suicide mission, lol!

    Oh, Boat does not like big prop/lower kv setup.... It will start to porpoise if I hit any rough water. Little prop/high kv and the boat just hops up, flies level, then sets back down.
    Last edited by CraigP; 11-29-2017 at 11:18 AM. Reason: More info...

  29. #269
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    Quote Originally Posted by photohoward1 View Post
    No restrictions for motor in P Sport. Spec is 36x60 mm


    Sent from my iPhone using Tapatalk
    That’s a small motor! So folks need a very light hull in Spec with that small motor? I got a 3674 in my DF29 Mono...

  30. #270
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    Usually those boat are light. There are tons of options though for motors.
    Noisy person

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