TP 4092 1600 kv motors

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  • sampit
    Senior Member
    • Jul 2009
    • 447

    #1

    TP 4092 1600 kv motors

    Hi,can anyone tell me what size Lipos and what c I would need to run a TP4092 1600 kv motor single setup
    in a FC Cheetah starting with a 45mm prop using a FC 240 8S esc. looking to keep it a light as poss and around 4 minutes + run time would it be poss to run two 3s packs in series, or is that asking to much with this size motor.
    cheers for any advise
    Last edited by sampit; 04-24-2012, 06:15 AM.
    FC Cheetah TP4092 1600KV Dinogy 6s2p,Etti Envoy WE 3s, Rico Mono 31" T600 1400kv Dinogy 5100mAh 65c 6s1p
    Popeye Hydro T600 1400kv 6s1p
  • Fluid
    Fast and Furious
    • Apr 2007
    • 8011

    #2
    You would need 5S or 6S for that motor. On 6S your rpm would be around 32,000, pretty high for a 45mm prop if you want 4 minutes of run time. Is that four minutes of full throttle running, or four minutes of on and off, part throttle running? If the former, then the motor is not appropriate to meet your needs. If you want long run times you can use high voltage if you couple it with lower amp draw, or you can run 2P. You would be better off using a motor with a Kv around 1250 on 6S. That would work with your equipment, give decent speed and if you didn't get greedy with prop size give good run times. If you only use part throttle most of the time, then four minutes may be acheivable with your current motor depending on your cells mAh capacity.

    As an example, I run a Neu 1527/1Y in my 34.5" SprintCat (1250 Kv). Propped with a bent x455 it runs near 60 mph and uses ~4000 mAh in a 2 minute heat. Propped with an x447 it runs around 50 and has plenty of run time, never measured it.


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    • sampit
      Senior Member
      • Jul 2009
      • 447

      #3
      Thanks Jay
      It would be only on off running really, just for fun running to be fair, maybe I would be better getting a couple of 5s packs, I would like to hit high
      50s now and again, would that be posable with 2x 5s packs on this motor maybe with another size prop?
      Sam
      Last edited by sampit; 04-24-2012, 09:26 AM.
      FC Cheetah TP4092 1600KV Dinogy 6s2p,Etti Envoy WE 3s, Rico Mono 31" T600 1400kv Dinogy 5100mAh 65c 6s1p
      Popeye Hydro T600 1400kv 6s1p

      Comment

      • Fluid
        Fast and Furious
        • Apr 2007
        • 8011

        #4
        On 5S2P power that motor should be able to give low-50s although amp draw would limit run time if you used enough prop and ran it hard. It is hard to say definitively, so much depends on pack quality and hull setup. An x548 or x648 might work.


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        • CatMan
          Member
          • Jun 2010
          • 96

          #5
          hey Fluid you stated above;
          "If you want long run times you can use high voltage if you couple it with lower amp draw, or you can run 2P" I've read something on here like this before and didnt understand it and now cant find it.
          could you explain this for me? it sounds like what I'm looking for? But I don't know what you mean. do you mean get bigger motor so it doesnt have to work as hard which in turn gives longer run times?
          and does the 2P mean 2 packs wired parallel? I have stock genesis (for now) trying to learn so I can get the right motor/setup someday (soon) with 2x2S in series 30 to 40 C 4000mah batts.
          i'm getting 5 to 6 minute runs.
          How do you get high voltage and low amp draw?
          Thanks, i figured i would have to go to 2 x 4s parallel for longer run times.

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          • JIM MARCUM
            Senior Member
            • Jun 2011
            • 773

            #6
            Jay can correct me if any of this is wrong. I think Jay was trying to tell you is that to get the RPMs you need for speed (mid 30 K RPM) with a 1600 KV motor you will need to run 5-6S 2P & a larger prop. Larger prop = more amp draw = hotter ESC, LIOPs & motor. The TP4092 is a good motor, but if you want to get long run times and good speeds, I would get it in a 2200KV model & run 4S2P. That's: 4 S (cells) 2p (packs) in parallel. A good 4S Lipo will cost almost as much as your motor, so running 4S2P - instead of 5S or 6S - will SAVE you money.

            Plus, if you ever want to race your 34" Cheetah in a NAMBA event, you would be in the P Offshore class - which is limited to 4S - in 4S1P or 4S2P configuration. Hope this helps. JIM

            PS: The same motor/ESC & LIPO setup would work well in your Genisis. 2S2P won't cut it.
            JIM MARCUM: NAMBA 777; EX? SoCal FE Racers Club; D-19; Official 2012 NAMBA FE Nationals Rescue Diver; Purple Heart Viet Nam Vet; Professional SCUBA/HOOKA Diver, KELCO, 1973-1978; BBA 1978, Magna Cum Laude; MBA 1980 w/honors; Retired DOD GS1102-12 Contract Specialist

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            • steveo
              Fast Electric Addict!
              • Apr 2007
              • 1454

              #7
              u will not get any longer runtimes with a 4s2p setup 2200kv than his current motor on 5s- higher voltage less amperage, i think 5s 2p would be a good setup for a mid 50's boat

              Comment

              • JIM MARCUM
                Senior Member
                • Jun 2011
                • 773

                #8
                Originally posted by steveo
                u will not get any longer runtimes with a 4s2p setup 2200kv than his current motor on 5s- higher voltage less amperage, i think 5s 2p would be a good setup for a mid 50's boat
                Longer run times, maybe not. Depends on the LIPO mAh and "C" amperage rating he uses. But a 2200KV on 4S2P will cost less money than 5S2P AND he could enter it in NAMBA races. If he's never gonna race, other than costing more, it dosen't really matter. JIM
                JIM MARCUM: NAMBA 777; EX? SoCal FE Racers Club; D-19; Official 2012 NAMBA FE Nationals Rescue Diver; Purple Heart Viet Nam Vet; Professional SCUBA/HOOKA Diver, KELCO, 1973-1978; BBA 1978, Magna Cum Laude; MBA 1980 w/honors; Retired DOD GS1102-12 Contract Specialist

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                • keithbradley
                  Fast Electric Addict!
                  • Jul 2010
                  • 3663

                  #9
                  If there aren't enough cooks in the kitchen already, I'll throw my hat into the ring...
                  I agree with Fluid. I definitely don't see any advantage to going UP in kv, and I think it would be counter-productive. The Cheetah is probably going to need a decent sized prop to push it well.

                  Sam, there's plenty of room for lipos in that hull. Run two 5s or 6s (whichever you decide) packs in paralell. That will give you longer runtimes and also more available current potential. If you run 2p you can get away with lower C ratings. A pair of 25C packs around 5000mah would be plenty.
                  www.keithbradleyboats.com

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                  • sampit
                    Senior Member
                    • Jul 2009
                    • 447

                    #10
                    Thanks Keith
                    Im now going to get myself 2 new x 5s 25c 5000 mah packs
                    And see how we go. any thoughts on a prop for sports running
                    I have x442 x445 and an x642 but might need a slightly bigger one maybe,
                    would be happy with mid to high 50s
                    FC Cheetah TP4092 1600KV Dinogy 6s2p,Etti Envoy WE 3s, Rico Mono 31" T600 1400kv Dinogy 5100mAh 65c 6s1p
                    Popeye Hydro T600 1400kv 6s1p

                    Comment

                    • martin
                      Fast Electric Addict!
                      • Aug 2010
                      • 2887

                      #11
                      Steven Vacarro tested a TP4092 - 1800kv motor in a 36" cat hull on 6s & used a x450 & got 60mph.

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                      • jkr
                        FE Addiction
                        • Aug 2010
                        • 568

                        #12
                        The shaft on this is 5mm all the way or it is turned down to 5mm on the output?

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                        • steveo
                          Fast Electric Addict!
                          • Apr 2007
                          • 1454

                          #13
                          Originally posted by sampit
                          Thanks Keith
                          Im now going to get myself 2 new x 5s 25c 5000 mah packs
                          And see how we go. any thoughts on a prop for sports running
                          I have x442 x445 and an x642 but might need a slightly bigger one maybe,
                          would be happy with mid to high 50s
                          i have a 34" h and m super cat and i run zippy 2p 5s 30c 5000mah lipos , castle 1518 1800 kv, m445 prop and get a constant 55mph with some good runtime- i think if u aim for 55mph u will have the best of both worlds speed and decent runtime. i think u might need a bigger prop but start with the x445 also i would recommend a higher c rating better to have more than not enough especially if u decide to change something later on

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