Best bang for the buck 7.2-7.4 volts single battery?

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • CaptPJB
    Senior Member
    • May 2010
    • 237

    #1

    Best bang for the buck 7.2-7.4 volts single battery?

    Keeping at 7.2-7.4 volts ie single battery Lipo or Nimh what is the best bang for the buck? Brushless motor which means changing esc or a slighter hotter brushed motor keeping the existing esc if so which one? Speed 600?

    I have no issue using a 7.4 lipo and timing runs to avoid damage to the battery. Presently I run at full throttle all the time with standard set up. When Nimh is fresh performance is ok but after a minute or so it drops off using 2000 Nimh

    Peter
    Last edited by CaptPJB; 07-31-2010, 05:40 PM. Reason: Battery details
  • Diesel6401
    Memento Vivere
    • Oct 2009
    • 4204

    #2
    Originally posted by CaptPJB
    Keeping at 7.2-7.4 volts ie single battery Lipo or Nimh what is the best bang for the buck? Brushless motor which means changing esc or a slighter hotter brushed motor keeping the existing esc if so which one? Speed 600?

    I have no issue using a 7.4 lipo and timing runs to avoid damage to the battery. Presently I run at full throttle all the time with standard set up. When Nimh is fresh performance is ok but after a minute or so it drops off using 2000 Nimh

    Peter
    Welcome to the forum. First thing I would suggest reguardless which direction you (brushed/brushless) is change the stock esc out asap. It's just not up to the task. With a speed 600, new esc, diferrent prop and a 2s lipo you may mange high teens, low 20s. I say just go brushless, their are a number of members running brushless set-up here I will help you pick the right combonation. Member Jesse J has the fastest RIO I've seen on video. I sure he'd help you.

    O to your question use a lipo!
    - Diesel's Youtube
    - Diesel's Fleet
    "It is easier to be wise for others than for ourselves"

    Comment

    • CaptPJB
      Senior Member
      • May 2010
      • 237

      #3
      Originally posted by Diesel6401
      Welcome to the forum. First thing I would suggest reguardless which direction you (brushed/brushless) is change the stock esc out asap. It's just not up to the task. With a speed 600, new esc, diferrent prop and a 2s lipo you may mange high teens, low 20s. I say just go brushless, their are a number of members running brushless set-up here I will help you pick the right combonation. Member Jesse J has the fastest RIO I've seen on video. I sure he'd help you.

      O to your question use a lipo!
      Understood about the stock esc. This is "throw down" boat so on a budget is there a HK brushless package that would work?
      Not looking for the ultimate just 18-22 mph at minimum cost. Figure stock 15-18 fresh battery. Anything around 18 sustained would be good

      Peter
      Last edited by CaptPJB; 07-31-2010, 07:51 PM. Reason: spelling

      Comment

      • Jesse J
        scale FE racer
        • Aug 2008
        • 7116

        #4
        shoot for around 3000KV motor a 38-40mm prop and a 120-150 amp ESC your boat will fly! on 2s or 3s you should get mid 20s and mid 30s, respectively.
        "Look good doin' it"
        See the fleet

        Comment

        • Diesel6401
          Memento Vivere
          • Oct 2009
          • 4204

          #5
          Originally posted by Jesse J
          shoot for around 3000KV motor a 38-40mm prop and a 120-150 amp ESC your boat will fly! on 2s or 3s you should get mid 20s and mid 30s, respectively.
          The man has spoken!!!

          Thanks for backing me up Jesse
          - Diesel's Youtube
          - Diesel's Fleet
          "It is easier to be wise for others than for ourselves"

          Comment

          • CaptPJB
            Senior Member
            • May 2010
            • 237

            #6
            Originally posted by Diesel6401
            The man has spoken!!!

            Thanks for backing me up Jesse
            Don't dispute the words of wisdom but that combo with esc is $100 plus the original boat cost. For $200 I can get a modded sv27. I know I just sold one! This is meant as a anyone can use it throw down boat to lead them to the sport

            Looking for approx sub $50 tweaks to make the stock boat an 18 mph one if that is possible?
            Peter

            Best thoughts right now a big 7.4 lipo to keep voltage up over a 5 minute run
            Last edited by CaptPJB; 07-31-2010, 09:15 PM. Reason: Added more

            Comment

            • Diesel6401
              Memento Vivere
              • Oct 2009
              • 4204

              #7
              This may help

              Originally posted by Grimracer
              vspec..

              your post is honest and well done..

              The Rio EP was not designed to be a speed demon.. If that was the case it would have been brushless.

              The market for this boat is the new guy that just wants to get the feel for an RC boat and the 2.4 is hobby shop friendly.. do ya know what I mean?

              Anywho.. YEP.. its time to MAKE IT ROCK.. mine has went 22 on a brush (Speed 600) motor and 7 cells..

              Lets have some fun………

              Grimracer CHALLENGE to the go fast guys……..Go ahead.. knock it off the top!

              ROCK ON!

              Grim

              Disclaimer: Modifying you boat will void the warranty.. but I bet you knew that!
              - Diesel's Youtube
              - Diesel's Fleet
              "It is easier to be wise for others than for ourselves"

              Comment

              • CaptPJB
                Senior Member
                • May 2010
                • 237

                #8
                ESC Just died

                Went to run the boat again last night and no motor although rudder works OK. Ran power direct to motor it spun up so it looks like the ESC is the culprit.

                Boat is two months old but sending it back for repair would cost more than buying a new ESC from Aquacraft but I don't think that is the way to go in the long run. Anyone know if I I have to send the whole boat back or maybe just the ESC?

                Anyway I guess it means upgrade time is coming sooner than anticipated I will continue to search forum for economical ESC and motor combo that gives a little more performance.

                How does one remove the radio box to access the ESC by the way, does the whole thing come out or do you remove the servo and radio then the wood floor?

                Peter

                Comment

                • CaptPJB
                  Senior Member
                  • May 2010
                  • 237

                  #9
                  Good news Aquacraft is going to send new ESC still would appreciate some hints how to get to it.

                  Comment

                  • Diesel6401
                    Memento Vivere
                    • Oct 2009
                    • 4204

                    #10
                    Originally posted by CaptPJB
                    Good news Aquacraft is going to send new ESC still would appreciate some hints how to get to it.
                    i left mine in the boat, too much of a pain in the a$$ to get out.
                    - Diesel's Youtube
                    - Diesel's Fleet
                    "It is easier to be wise for others than for ourselves"

                    Comment

                    • chummer
                      Senior Member
                      • Mar 2009
                      • 636

                      #11
                      It's not hard to remove at all. First remove the servo and then the wood base will unscrew. Cut any connectors from the esc and pull it out. Don't leave the old one in the there. Take the time and remove it and do the job right. I removed the stock esc on 4 of these boats and I did not find it to challenging at all. I replaced it with the pro boat esc. well worth the extra expense.

                      Hope this helps...
                      "IT IS BETTER TO REMAIN SILENT AND THOUGHT A FOOL THAN TO OPEN YOUR MOUTH AND REMOVE ALL DOUBT"

                      Comment

                      • CaptPJB
                        Senior Member
                        • May 2010
                        • 237

                        #12
                        Originally posted by chummer
                        It's not hard to remove at all. First remove the servo and then the wood base will unscrew. Cut any connectors from the esc and pull it out. Don't leave the old one in the there. Take the time and remove it and do the job right. I removed the stock esc on 4 of these boats and I did not find it to challenging at all. I replaced it with the pro boat esc. well worth the extra expense.

                        Hope this helps...
                        Many thanks that is a help.Since Aquacraft are sending me the new ESC will not go the Proboat route right now.

                        Comment

                        • Diesel6401
                          Memento Vivere
                          • Oct 2009
                          • 4204

                          #13
                          It's my rescue boat so im lazy with it.. Charge, lube and rescue!!!
                          - Diesel's Youtube
                          - Diesel's Fleet
                          "It is easier to be wise for others than for ourselves"

                          Comment

                          • CaptPJB
                            Senior Member
                            • May 2010
                            • 237

                            #14
                            Thinking of going with an S600 motor for perhaps a little more speed, can some one tell me if I can run the standard prop or do I need to drop down to a 38-40mm?


                            Peter

                            Comment

                            • tunnelvision
                              Senior Member
                              • May 2010
                              • 685

                              #15
                              Originally posted by CaptPJB
                              Thinking of going with an S600 motor for perhaps a little more speed, can some one tell me if I can run the standard prop or do I need to drop down to a 38-40mm?


                              Peter
                              Fun motor definitely faster than stock. I just put in the S600 with 7 cells and a xl-5 esc. It goes pretty good with the stock prop. Run about 7 minutes tops or it gets to hot. 10 min warm on 6 cells and a 7.4 lipo for 5 minutes and that was fun too. Removed one of the rudders and did not affect the handling much if at all. Also, upgraded to a .130 octura flex, teflon liner and brass stuffing tube. Will post a pic if I can find my camera.

                              This is a fun boat but I am getting the itch to go brushless. Have an extra pro boat 2900kv, 60amp seaking and a stainless 34mm prop just sitting there...
                              Go Fast...Turn Right...

                              Comment

                              Working...