batteries and run times????

[rockford]

so im just curious about what other ppl are running in there boats. i have turnigy nano-tech 6500mah 2s2p 50-100c and im just over 3 min of run time and if i get close to 4 min it hits the studder bump. Is that a normal amount of time? i use both the stock prop and a 45x68 also they are hard packs and are ballooning

[photohoward1]

Need more info. Boat, motor, controller. You wrote you are running 2s2p.. 6500 cells. That's 13000 mah. If you are using your batts in 3 minutes you are running 360 amps!

[Heaving Earth]

I think 2s2p is how the individual packs are configured, not his esc.

[Heaving Earth]

I also assume he is running a stock revolt given that this thread is under the revolt forum title

[Heaving Earth]

Anyways, try not to run to studder bump and prop down for cripes sake. Why sucha big prop? If you want more speed upgrade esc and run 5s.
I can never figure why people try to run honkin ass props on systems that aren't designed for it to gain more speed.

[rockford]

Yes its just a stock revolt that's why I posted here and I did list that bigger prop but only used it a couple of times I mainly use the stock prop and still getting around the same run times with it. What reasons would it pull that many amps? It's all stock

[TristanJones]

Need more info. Boat, motor, controller. You wrote you are running 2s2p.. 6500 cells. That's 13000 mah. If you are using your batts in 3 minutes you are running 360 amps!

surely these packs would be in series.... in which case 6500 4s2p, the 3mins sounds about right, however if the packs are puffing then somethings not right. Your packs are rated at well over 300amp constant draw....

[ProfileBroKen]

My stock revolt with a 42X1.4 graupner composit prop was getting 6+ minutes (34ish mph) on 5000mah packs. With a 45X1.4 cnc aluminum prop, I am getting 4 minutes of run time (40ish mph). With a badly sharpened/balanced octura M545 prop, I get about 3.5 minutes (44ish mph). The 45mm prop setups come back fairly warm (batteries, motor, and esc). No puffed packs. Using Gen Ace hardcase 40C and 50C 2 cell packs in series.

I put some eagletree readings on another thread if you want to see details.

[photohoward1]

Maybe they are bad Chinese cells..

[Chilli]

First lets make sure we are all getting the nomenclature right. If you are running two 2S packs in series which I believe is the proper set up for the Revolt, that is 4S1P. I believe the stock prop is a 42x55. With the prop you are running, three minutes sounds about right. The faster you go, the more amps you burn and the shorter the run times. If you run the packs to low voltage cut off, you will hurt them and they will puff.

[rockford]

i want to say one thing they are 5600mah not 6500mah my mistake

[Niky]

Hi Guys,
I'm planing to buy the Revolt 30, I had the Spartan and nothing went good with that boat.
So i wanted to know if the Revolt had some important problems?
Looking trough the post on this forum, seems that Revolt is reliable unlike the Spartan.
And the other question is;
what about running the Revolt on 6s? Because of my Spartan I had to buy just 6s batt.,now i would like to use it also with Rev.
Is it enough just to change the esc, to put one T180 esc and leave the stock motor?
I heard that the T180 esc is OK even with 1800kv motor despite the 1600kv motor is better, possibly...
Thanks, salute all Niky.

[BHChieftain]

Hi,
If you are looking for a reliable boat, then you will want the RPMs in the 26,000-32,000 range IMHO, which is either the stock setup on 4S1P (with the 1800kv motor you are at 26K RPM), or on 6S you would need the bigger ESC and a 1500kv motor (32K RPM). Note, a 1600kv motor on 6S would put you at 35K rpm, on high side but probably ok.

6S on 1800kv is 40K which IMHO is too high for a reliable setup but if you are sure your boat is setup correctly and your driveline/prop are perfectly balanced it would be a speed demon... just more to go wrong at that RPM.

The stock AQ ESC is a really nice and highly water resistant ESC--- you might be better off buying new lipos (two 2S1P packs) vs. buying a new ESC. You can probably resell your 6S packs here on the swap shop. But it depends on what you are trying to accomplish-- a reliable fun runner, or a rocket (with potentially a short lifespan!)

Chief

[Niky]

Hi Chief,
thank you for your observations, but i'd like to know did the Revolt have its "own" problems as Spartan have, eg.: burning the ESC, slipping the collet driver, behavior on the water?
The RPMs you've reporting can be regolated by changening motors with their ESCs.
Thanks again, salute all Niky.

[Heaving Earth]

I think the revolt only had minor issues on "some" of the boats such as poor motor alignment to flex shaft (easy fix ) and maybe decals not stuck on great, but from my knowledge there were no esc motor issues or any problems that couldn't be fixed on the spot, without need for new parts.