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Thread: Recomended RPM range explained

  1. #91
    Join Date
    May 2007
    Location
    NY
    Posts
    1,517

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    Could be the smaller prop is less efficient and struggling to push the boat as easily as the larger prop causing the amps to be higher.
    Team Liquid Dash

  2. #92

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    Wow, didn't expect that.

  3. #93

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    Keep at it Crash...you'll sneak up on the perfect setup for your boat soon enough. I'm really liking the data. What I see is that this thread and the one that 785Boats referenced has a lot of old school thinkers throwing in their 2 cents. I don't know if you read that thread that he linked, but I did. I've had quite a few discussions with Travis about rpm and mph. I'm in his camp. My motto is...if you're not breaking, you're not trying. You gotta cook some stuff now and then or you're leaving fun on the table. It's only money...you'll make more.

  4. #94

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    Quote Originally Posted by Raydee View Post
    Could be the smaller prop is less efficient and struggling to push the boat as easily as the larger prop causing the amps to be higher.
    I have a couple more smaller millimeter props to try see if this one was a fluke the 48 millimeter prop that I ran yesterday is a cupped version wonder if that what influence to amp draw being less

  5. #95

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    Did I ask what batteries you're using?

  6. #96

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    Quote Originally Posted by Prodrvr View Post
    Keep at it Crash...you'll sneak up on the perfect setup for your boat soon enough. I'm really liking the data. What I see is that this thread and the one that 785Boats referenced has a lot of old school thinkers throwing in their 2 cents. I don't know if you read that thread that he linked, but I did. I've had quite a few discussions with Travis about rpm and mph. I'm in his camp. My motto is...if you're not breaking, you're not trying. You gotta cook some stuff now and then or you're leaving fun on the table. It's only money...you'll make more.
    My theory exactly , Hobbies cost money, PERIOD!! How much is up to the hobbyists

  7. #97

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    Quote Originally Posted by srislash View Post
    My theory exactly , Hobbies cost money, PERIOD!! How much is up to the hobbyists
    If r/c is too expensive, there are PLENTY of low cost hobbies out there. It's all about smiles per dollar, and learning costs money.

  8. #98

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    And yes, I have lost my mind on this hobby lol.

  9. #99

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    Quote Originally Posted by Prodrvr View Post
    And yes, I have lost my mind on this hobby lol.
    It happens. Lol.

  10. #100

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    I tried an intervention...didn't work lol

  11. #101

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    Quote Originally Posted by Prodrvr View Post
    I tried an intervention...didn't work lol
    This is a lesser of two evils for me, it used to be Camaro’s and Friday/Saturday night racing. You think a little blown up ESC is pricey!! Lol

  12. #102

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    Funny you mention that. I wanted to be a drag racer when I was a kid. When I got my driver's license, my mom gave me a '75 Cutlass. Went through that car, a '77 Monte Carlo my grandparents gave me, and a '70 Chevelle I bought. They all helped me financially for two years...waaaay too expensive of a hobby. Countless tires, 5 engines, 3 transmissions, 1 rear diff, bunch of brake parts, etc... Yeah, I'm more than happy to replace esc's or motors regularly lolol.

  13. #103

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    Quote Originally Posted by Raydee View Post
    Could be the smaller prop is less efficient and struggling to push the boat as easily as the larger prop causing the amps to be higher.
    No. It's because even though it is a smaller prop he is pulling full throttle. So much higher revs than when he was using the larger prop at only partial throttle. Therefore higher amps.

    Anyway, I'll leave you guys with it.

  14. #104

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    Where are ya Crash

  15. #105

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    Quote Originally Posted by Prodrvr View Post
    Did I ask what batteries you're using?
    5s 4000 mah ADmirals Pro
    3s 5000 mah rev lec. 420

  16. #106

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    How do you like the Admirals? You get them from Motion RC?

  17. #107

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    Quote Originally Posted by Prodrvr View Post
    Where are ya Crash
    went to the pond to meet up with the Marquette Boat Club here in town. They are there most sundays . had about 8 to 9 boats there today …...super fun.

    I ran mine this morning before everyone got there but, when I went back at it the steering servo let go. opened it up and its all water and rust.

    so, no more runs today.

  18. #108

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    Damn!

  19. #109

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    Quote Originally Posted by Prodrvr View Post
    Damn!
    All part of it.
    What kills me is that these products are advertised as water proof..

    #notrollsmoveon

  20. #110

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    Quote Originally Posted by Crash View Post
    All part of it.
    What kills me is that these products are advertised as water proof..

    #notrollsmoveon
    What brand servo Crash?

  21. #111

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    Quote Originally Posted by srislash View Post
    What brand servo Crash?
    0916181806a.jpg

  22. #112

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    Holy crap!! I have 3 of those.

  23. #113

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    Quote Originally Posted by Prodrvr View Post
    How do you like the Admirals? You get them from Motion RC?
    YES, motion rc.

    the admirals were doing great parallel but, now that I am running them in series with a 3s they are not balancing out perfectly anymore. I have two 5s 4000mah and they are both refusing to balance out.

  24. #114

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    Oh boy

  25. #115

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    RPM. Means nothing. Only if the prop gets to small.

  26. #116

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    Quote Originally Posted by Prodrvr View Post
    Oh boy
    0919181617a.jpg
    0919181617.jpg

  27. #117

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    Quote Originally Posted by Nevs View Post
    RPM. Means nothing. Only if the prop gets to small.
    The best performance was from my 48mmx1.6....not small imo

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