to much ESC???

[steve-b]

:confused2 Hey guys,

I was wondering. Why not buy the biggest baddest ESC you can afford and use it in a number of different boats? 6s, 4s, 2s etc.
Is their such a thing as too much ESC?
This might be a silly couple of questions, but being pretty new to FE im still learning and always appreciate any feedback i can get.

Thanks.

Steve.

[Make-a-Wake]

Weight and bulk can be an issue if you have boats of several different sizes. An ESC that can power a 22" boat probably cant power a 40" boat................and the 40" boat esc is too large/heavy for the small one.

[FighterCat57]

It's fine until you smoke a motor and it fries the ESC. I did that once. Actually... twice.

JMO- but try to keep things matched.

You can use a smaller ESC on a larger motor though. It's sometimes more efficient, just don't over prop it.

Good luck & happy boating. =)

[steve-b]

So its not ok to use to use a larger ESCon a smaller motor? I thought that the ESC was a vessel that the motor pulled power thru, (well not just that) but i figured that it will only allow what the motor will draw???
I run a HK 3660 2200 with a swordfish 120 on two 5000 2s 40c in series, and the motor gets hot after about 3.5 min @full throt (140). this is in a jae 21.
If i use the UL1 combo in the same boat it will come in much cooler. This must be what you mean by matching???

Steve.

[FighterCat57]

So its not ok to use to use a larger ESCon a smaller motor? I thought that the ESC was a vessel that the motor pulled power thru, (well not just that) but i figured that it will only allow what the motor will draw???
I run a HK 3660 2200 with a swordfish 120 on two 5000 2s 40c in series, and the motor gets hot after about 3.5 min @full throt (140). this is in a jae 21.
If i use the UL1 combo in the same boat it will come in much cooler. This must be what you mean by matching???

Steve.

It's easy to over draw a motor with a prop that is too big for the application.

By matching I mean ESC/Motor/Cells within tolerance of each other, it's a balance they create. I'm not the best one to explain motor/ESC/Cell matching though.

[m4a1usr]

:confused2 Hey guys,

I was wondering. Why not buy the biggest baddest ESC you can afford and use it in a number of different boats? 6s, 4s, 2s etc.
Is their such a thing as too much ESC?
This might be a silly couple of questions, but being pretty new to FE im still learning and always appreciate any feedback i can get.

Thanks.

Steve.

Its not a bad question to ask. There are several reasons you cannot switch one ESC between boats. One is wire length. You might need to trim the batt or motor wires to fit well inside. Some boats need short wires due to configuration. Others dont. As well are the size of connectors being used. Some of my more powerfull setups have 8mm bullets. Some use 5.5mm and others use 6.5mm. I'm not going to use 8mm on a 100amp setup. And adding adapters just adds circuit resistance. Something you should never do unless there is no other option. Thats not to say you cannot make one ESC available to use in multiple hulls. But its not going to be as easy as you might think.

John

[Jeepers]

its not a bad idea to have "to much esc" even a small motor can pull excessive amps, bind in drive line, wrong prop, leaves stuck on rudder, etc.

I ran a Castle Hydra 240LV in my P Spec Sport hydro using an Aquacraft UL1 motor, and a ton of prop, I got the 5.5mm bullets so hot I could hardly touch them. that same esc in my P Sport hydro powered by a Neu 1521 1.5d comes in with everything just warm to the touch. I am glad I had the 240 amp esc on the smaller motor I probably would have torched anything smaller.

[Jeepers]

Its not a bad question to ask. There are several reasons you cannot switch one ESC between boats. One is wire length. You might need to trim the batt or motor wires to fit well inside. Some boats need short wires due to configuration. Others dont. As well are the size of connectors being used. Some of my more powerfull setups have 8mm bullets. Some use 5.5mm and others use 6.5mm. I'm not going to use 8mm on a 100amp setup. And adding adapters just adds circuit resistance. Something you should never do unless there is no other option. Thats not to say you cannot make one ESC available to use in multiple hulls. But its not going to be as easy as you might think.

John

cannot swith escs between boats?

. I do this and did this at the Nats, since I use Hydra 240s I use all the same connectors in my boats and configure my hulls to do just this in case of problems.
I actually swapped in the esc from my P Sport in to my Q sport hydro and took the Championship in that class. I mostly race so I don't really worry about LVC's and it would take alot more than 1 1/2 minutes to even come close to the cutoff.

[BakedMopar]

cannot swith escs between boats?

. I do this and did this at the Nats, since I use Hydra 240s I use all the same connectors in my boats and configure my hulls to do just this in case of problems.
I actually swapped in the esc from my P Sport in to my Q sport hydro and took the Championship in that class. I mostly race so I don't really worry about LVC's and it would take alot more than 1 1/2 minutes to even come close to the cutoff.

I have been running my spec rigger with my Ice 200 for some data. I used to also use a hydra 120 with my mini hydro with an approximate amp draw of 30 amps.

[m4a1usr]

cannot swith escs between boats?

. I do this and did this at the Nats, since I use Hydra 240s I use all the same connectors in my boats and configure my hulls to do just this in case of problems.
I actually swapped in the esc from my P Sport in to my Q sport hydro and took the Championship in that class. I mostly race so I don't really worry about LVC's and it would take alot more than 1 1/2 minutes to even come close to the cutoff.

DO NOT confuse my statement as an all encompassing cannot switch ESCs between hull. Read a bit beyond that one sentence. At the end I comment very specificly Thats not to say you cannot make one ESC available to use in multiple hulls

John

[Jeepers]

easy John I saw and read the last part of your post and understood it quite clearly.

However the OP might not catch that, just covering the bases.

[steve-b]

Thanks guys.
Its nice to read your views on things, very helpful.

Thanks again.

Steve.

[785boats]

One size fits all in my case Steve.
The only ESC I use is the HiModel GX 200A 4s - 8s with BEC.
On the following motors.
7Xl, 8Xl., 9Xl, Ammo2300, Aquacraft SV27 motor, Typhoon 500 outrunner, Turnigy 2200 outrunner.
In the following hulls.
25"mono, 28"mono, 31" mono, 32"cat, 33"hydro, 24"hydro & a boogie board rescue boat.
I've got 4 ESCs to service 7 boats & all of them can be swapped into any boat as all the leads are the same length with 5.5mm bullets. No problems.
I might have one ESC on a 7Xl in a 32"cat doing 50mph pulling 120A & then half an hour later it could be in a 25"mono on a Typhoon 500 outrunner doing low 40s pulling 50A or so.
Never had a problem yet. But note... they are all 4s setups.
A higher current rating ESC takes a lot of guesswork out of the equation in my opinion.
I go by the theory (& it's not my theory) that what ever the manufacturer of a motor lists as its Max (efficiency) amps you are going to double it along the way at times. And I've measured the loads in a few of the setups & it proves the theory just about right. The spikes can be double & the run current can be at least 50% more.
All the best.
Paul.