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  1. #301
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    Quote Originally Posted by WILDMAN View Post
    SOMEONE needs to start their own thread if they want to post crap that has nothing to do with this topic!

    Anyway, we spent 6-7 hours at the lake today. Lots of issues, but it worked out OK at the end of the day. This 21 ran 100-101 with the 300xs. Of course we are at 90 degrees and 100% humidity which does not help. First, we did not realize that the motor is limited to 4k rpm for a while, then 5k during breakin. While taking turns driving around the lake for two hours, it started pouring rain and 30 mph winds and whitecaps for about an hour. Once the rpms kicked in, we were out of gas and had to drive 10 miles to get more. Then, once back in the water, every prop we tried hit 6400 at only 90 mph. Even a 36" cleaver. Turns out that running the motor as high as it needs to be just makes the props slip like crazy. Even lowering the motor 3/4" didn't help. Finally I tried the 15.25 x 34" Max 5 prop. I had it on the 400R 21 Liberator. The first pass ran 96. 2nd pass I bumped the trim and ran 97. We then raised the motor about 3/8" to 2 3/8" above the bottom and ran 103 at 6050 rpm. I guess you just need a big diameter prop to work on these gearcases. Just takes time to figuer it out I guess. Mercury says there's another 4-7 mph with the right prop. MAYBE THEY CAN LOAN ME ONE TO TRY HINT,HINT.HINT!! I know they are reading this! I think the boat is sold, so I need it ASAP. HINT,HINT! Another issue we had was that it would not go over 3700 and was running rough. Turns out one plug wire came completely off. My fault. I took it off to check compression for someone and must not have gotten it back on tight. Overall, once we got everything working, the motor does pull very hard even with the 34" 5 blade. The motor is pretty quiet when in the water and even when on plane. It's louder to people outside the boat. Sounds alot like an I/O boat from a distance. Overall, I think it's a big improvement over the 300xs and has alot more power in it than is available now. It will take some time for people (and me) to figuer out the setup. Once we figuer it out, It will be worth the change. As it is now, it's 2-3 mph faster on this 21 Liberator. Hopefully, I will get to borrow the correct test prop before this boat leaves here and I can report the full potential. Again HINT,HINT!! I forgot my camera, but I know Joe and Zo6man got some video and pics so maybe they can post them.

    I can vouch for the 4k RPM thing, even though mine's a 115. I still haven't gotten mine out of break in mode haha. A solid 1.8hrs on the motor so far. Not enough smooth water. When it is smooth, I'm in the wrong boat (red one)

  2. #302
    Join Date
    Apr 2018
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    Lake Placid, FL
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    We'll have 300R data on a new Seafoam Green Errol Lanier Hellcat soon! We have 3 on the way! V8 300ProXS data coming from Lake X too!

  3. Likes JPEROG, whipper, Brian Kjær, AZMIDLYF liked this post
  4. #303
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    I'd like to see the dyno for the 300R vs 300 Pro XS

  5. #304
    Join Date
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    Guys i think this is the funniest part!!! After i get something all spot on i get board, sell it and move on to next.
    Lol
    2011 DCB F26
    2017 300 XS DBR

  6. #305
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    I'm getting a 34" x 15.25" Merc CNC 5 blade cleaver prop later this week. Hopefully that will wake it up!
    " IT'S NOT HOW FAST YOU ARE, IT'S HOW COOL YOU LOOK!!! "

    Check out my new website. liberatorpowerboats.com
    Boat Delivery available













    Things owned. NOTHING!!
    Ain't got no toyz, Ain't got no money! I is jus a poor Florida boy!

    Visit My Liberator Boats Website

  7. #306
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    Quote Originally Posted by WILDMAN View Post
    I'm getting a 34" x 15.25" Merc CNC 5 blade cleaver prop later this week. Hopefully that will wake it up!
    That will probably work well but what do you think the market for this motor on small boats is going to be if it takes a $5000 prop to make it perform? At that point you’re pushing $10k more than a dialed in 300SX for what, 5 mph?

    i know, there’s a lot more development to do before judgement is passed and the low end torque is impressive and what it does with this prop will be a benchmark but someone needs to figure out how to make a “normal” priced prop work, just saying.
    Last edited by mjw930; 07-22-2018 at 11:00 AM.
    Mark

  8. Likes Kcraft, Hayabusajm liked this post
  9. #307
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    redondo beach, ca
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    @Mark the market will be if you want a new performance boat or repower it's your only option @WILDMAN , how do you think this prop would work being a 5 blade with 32p and under a grand? I currently have hill marine choppers and cleavers they seem to work well. https://www.hillmarine.net/product-p/bpr5bmm.htm

  10. #308
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    It will get sorted out over time, for now it's great to have Wildman giving insights from the trenches.

  11. Likes marks86, Hot Shot Merc, 99fxst99 liked this post
  12. #309
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    Hydromotive P5X is the answer.
    Azure AZ259, 8.1

  13. Likes Hayabusajm, mach351 liked this post
  14. #310
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  15. #311
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    28" is not enough pitch.

    Also Power tech props suck.
    Azure AZ259, 8.1

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  17. #312
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    New Smyrna Beach, FL./LOTO
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    Quote Originally Posted by mjw930 View Post
    That will probably work well but what do you think the market for this motor on small boats is going to be if it takes a $5000 prop to make it perform? At that point you’re pushing $10k more than a dialed in 300SX for what, 5 mph?

    i know, there’s a lot more development to do before judgement is passed and the low end torque is impressive and what it does with this prop will be a benchmark but someone needs to figure out how to make a “normal” priced prop work, just saying.

    There will be less expensive stuff to come as the market demand becomes bigger. Dewald is hot on the X-cat stuff right now and his are much less then 5K but still not cheap. I stand by original statement that these things are going to be incredible with a little time and aftermarket tuning. Really looking forward to running the LCB/4.6 combination.

    Joe

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  19. #313
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    Quote Originally Posted by gotboostedvr6 View Post
    Hydromotive P5X is the answer.
    I said this pages ago. I’ve got a Quad 4 that is 15.5” diameter and is a 35 pitch. Hydromotives are great wheels - super strong, and inexpensive.


    '95 STV "The Blue Goose"


  20. #314
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    I have a p5x on a 400r/hdsm....it's pretty good but no max5. The blade shape and barrel are very similar to a max5 but the p5x has, for my own lack of proper vocabulary, regressive rake. The rake starts out high at the root and reduces as you move to the tip, similar to bravo1. Max5 is pretty much the same rake root to tip. Conversely, the pro max has an aggressively increasing rake as you move out on the blade.

    That said, I've only tried a 25" p5x and a 28" max5, so my experience isn't a direct comparison.
    Last edited by engineermike; 07-22-2018 at 02:53 PM.

  21. #315
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    Quote Originally Posted by mach351 View Post
    I said this pages ago. I’ve got a Quad 4 that is 15.5” diameter and is a 35 pitch. Hydromotives are great wheels - super strong, and inexpensive.
    Yes sir … as long as you gotz the power to pull them big *&*^#&^&^ …


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