newbie with Impulse 31 v2 some questions and damage

[aaron.smith0406]

I know this is kinda old but I thought I'd post it anyway because I was looking for info on running the Impulse v2 with 6s on stock prop. First starting, I read a lot of mixed reviews on the v2 and 6s and nothing really concrete to allow me to make a decision on whether to run it or not. So I just went ahead and put the 6s in there and let it rip. I did a couple of laps with the thing wide open and kinda expected the thing to blow the hatch off. I brought it back in and everything was just slightly warm. So I threw it back in the water and did it again and everything was fine. To make a long story short I've been running 6s on stock for a couple weeks and I've had no issues. I do grease the flex shaft before every run. The thing scoots like a bat outta hell. There's no comparison to 4s. I put the 4s in there for my wife to run it. I'm not being a smart @ss but I do.

[Tyler83]

Hell yea, mine scoots with 6s too. I did melt a battery connector though. I just switched out the 1800kv for a 1500kv to hopefully cool her down a little bit. I'm going to run it with a 42x55 grim racer prop.

[Tatum Davis]

Impulse 31 v2 bone stock on 6s lipos for a few months. Not a single issue. This little s.o.b. Sits on the prop at 60mph out of the box.

[mannytx1]

I use 5s and m445 never problems

Protect your equipment make all your calculations to maximum voltage (cell 4.2v), Motor and Revolutions per minute (no more than 50,000 rpm)

Since each cell is 3.7v (medium = nominal) a 4s LiPo battery has a medium voltage of 14.8v,
a fully charged voltage of 16.8v and a maximum discharged voltage of 12.0v before damage occurs
a 6s LiPo battery has a medium voltage of 22.2v
a fully charged voltage of 25.2v and a maximum discharged voltage of 18.0v before damage occurs

LVC 3.4v/cell cut off no 2.9v o 3v before damage occurs
STO 3.85v/cell

no load
the first minute

4s 2200kv x 16.8v = 36,960 rpm max
5s 2200kv x 21.0v = 46,200 rpm max is too much
6s 2200kv x 25.2v = 55,440 rpm max bearing damage

4s 1500kv x 16.8v = 25,200 rpm max conservative

5s 1500kv x 21.0v = 31,500 rpm max = 4s 1800kv x 16.8v = 30,240 rpm max
6s 1500kv x 25.2v = 37,800 rpm max = 5s 1800kv x 21.0v = 37,800 rpm max

6s 1800kv x 25.2v = 45,360 rpm max is too much

[mosfet]

question : will a Octura x642 fit a the normal flexshaft !! BTW got the stronger OSE one in mine

working on a new set up for the summer

hit me back please

[mosfet]

new project !! (still working on this one)

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