Throttle falls off???

[Fastfish]

I have a Genesis 37" HK boat...stock motor, Turnigy 180A ESC, Fightercat Flex Cable upgrade 2s 5000mah 30c x2, Spectum RX & TX. My problem is no matter what speed I run the boat the power simple falls off and want throttle up until I release the trigger and punch it again...over and over it does that...hauls butt the slowly nothing...

[Diesel6401]

Make sure you throttle calibrate your esc. Change the lipo cut-off to 4 cell (don't use the auto detect, it doesn't work that well) and set your timing at 7.5 with the stock fsd motor. Sounds like your lvc on the esc is prematurely engaging which is a known issue with the seaking escs. Not a big deal at all. Prob best esc for the $$$ on the market.

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[martin]

How do you stop the lvc cutting in prematurely on the Turnigys & Seaking esc. Thanks.

[Diesel6401]

How do you stop the lvc cutting in prematurely on the Turnigys & Seaking esc. Thanks.

On mine manually entering the number of cells I'm running and not using auto-detect helped, some people that didn't work for though so they had to disable the lvc and time their runs. I have my timer set anytime I run away though. I bet using better cells helps as well, I ran into a issue with pre-mature lvc on a swordfish esc which never happened before. I was using nano-techs freshly charged. Swapped to a different brand also freshly charged and no more issue. I'm trying to drift away from the HK packs. My battery testing changed my view.

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[Fastfish]

I need a better ESC then...I don't want to go through BS again. I'm up for ESC recommendation.

[Diesel6401]

I need a better ESC then...I don't want to go through BS again. I'm up for ESC recommendation.

Who said that? I just said you have one of the best escs on the market.

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[TheShaughnessy]

do you have a way of testing your voltage sag under load? I usually see that happen on my older cells that don't hold voltage like they should under heavy amp draw.

[iamandrew]

it says you have 2 2S packs? :S

[JonD]

..... I was using nano-techs freshly charged. Swapped to a different brand also freshly charged and no more issue. I'm trying to drift away from the HK packs. My battery testing changed my view.

Ohh.... I have been using standard blue Turnigy on my Genesis with no problems that I am aware of (2 x 3S 5000mAh 40C in series, T180 on auto detect, Leopard 4082) and was thinking of trying some of the more expensive nano-techs. Just assumed that they would be better quality and give a bit more ..oomph! Is this maybe not the case ?

Jon

[iamandrew]

you dont need the nano tech batteries if your batteries are getting hot , and everything else is cold, then you probably need batteries with a higher C rating.
Ive found in my experience, was that if my batteries were hot, it was because of somthing ELSE causing the entire setup to have more friction, e.g. damaged strut bearing

[martin]

I have a Seaking 120a that i use an Overlander 60-90c 3s lipo (this is a very good quality & not cheap lipo in the UK) & in new condition. I set to 3s, lvc at 3.4v & its at 1/2 throttle all the time (tx has been calibrated). Changed to auto on cells & no lvc & all is good now,havnt tried setting to 3s & no auto with no lvc though.

[JonD]

I have a Seaking 120a that i use an Overlander 60-90c 3s lipo (this is a very good quality & not cheap lipo in the UK) & in new condition. I set to 3s, lvc at 3.4v & its at 1/2 throttle all the time (tx has been calibrated). Changed to auto on cells & no lvc & all is good now,havnt tried setting to 3s & no auto with no lvc though.

If set to no LVC, I would think it would overide all the other related settings, like number of cells, lvc cut out voltage, auto on, etc, i.e. these would surely be ignored?

Jon

[martin]

I dont know if this is the right way to do this or wether it can cause damage to the esc but a friend has a Turnigy 4082 motor & T180 esc on 6s 2x 3s in series. He was having the lvc cut in within seconds of the boat moving off, he then set esc to 3.4v cut off & cells to 3s & it works perfect every time.

[Fastfish]

That sounds like the same thing that is happening to me. I wasn't even testing mine in the water...I was bench testing mine. I can pull the trigger full throttle or very slow and with in 10 to 15 seconds there is no power until I release the trigger and press it again then it falls off again. (over and over) the same thing. I will try changing a few setting this afternoon.

[Diesel6401]

That sounds like the same thing that is happening to me. I wasn't even testing mine in the water...I was bench testing mine. I can pull the trigger full throttle or very slow and with in 10 to 15 seconds there is no power until I release the trigger and press it again then it falls off again. (over and over) the same thing. I will try changing a few setting this afternoon.

That's a big problem. Don't test the motor that long out of water. Running a brushless motor with any load is a big no no and can cause serious damage. Just a quick blip of the throttle to check rotation is it.

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