2nd castle 120 hydra burnt

[mustangboy_347]

here is the scoop i have put together a 32"godspeed catamaran with a mamba 2200kv motor a castle hydra 120, a castle bec @6v and i am running it on 4s lipo 4000mah 40c w/80c burst ....but i can only drive it 5-7 minutes and the esc melts the caps right off .... castle said it was that i was not using a bec the first time so they replaced it , then i put the new one in w/ a bec set @ 6v and nothing different ...can someone give me some pointers here i am just running into a brick wall right now .... thanks

[eboat]

Did you ever stop and see how hot things were getting ?
A 4000 mah is not very big and to run 5-7 minutes

[steve-b]

5-7 mins is a long run time. I get about 4-4.5 out of my rigger using 5000's.
What do you have the LVC at?
Also i have learned that it is better to hold it wide open most of the time rather than on and off the throttle. Im not saying that your not, i'm just saying what i have learned.
Their are allot of guys on this site that have a vast amount of knolage, i,m sure some will chine in and offer some other info. I have learned allot by just reading everyone elses problems... i mean challeng's.

Steve.

[JMSCARD]

here is the scoop i have put together a 32"godspeed catamaran with a mamba 2200kv motor a castle hydra 120, a castle bec @6v and i am running it on 4s lipo 4000mah 40c w/80c burst ....but i can only drive it 5-7 minutes and the esc melts the caps right off .... castle said it was that i was not using a bec the first time so they replaced it , then i put the new one in w/ a bec set @ 6v and nothing different ...can someone give me some pointers here i am just running into a brick wall right now .... thanks

the 2200kv motor is hot for a castle 120.... I use the 1515 1.5y... (1500kv) with my caslte 120 in a mean machine.... its on the edge of being to much... I usually run on 6s but with a small x440 prop.... what prop are you using? the castle is a little small for that motor....

[scoota]

i have data logged that motor drawing 204 amps to get up on plain , with a 45 mm prop !!! 120 amp is not enough to cover your a$$ ...

[mustangboy_347]

i really never stopped to look at temps just did a couple really nice passes in nabout a 2 acre pond and man it was over in seconds ,i called castle and they said that the esc should hold that motor selection pretty good , dont really know what size prop i got ,i got it off my buddy ....do you think that the castle 240 hydra hv would do the trick for me .....thanks guys for the input also

[scoota]

i will not use hydras cause so many have failed , i would go for a 180 seaking or 240 swordfish myself . but thats just my 2 cents worth

[JMSCARD]

i really never stopped to look at temps just did a couple really nice passes in nabout a 2 acre pond and man it was over in seconds ,i called castle and they said that the esc should hold that motor selection pretty good , dont really know what size prop i got ,i got it off my buddy ....do you think that the castle 240 hydra hv would do the trick for me .....thanks guys for the input also

boats aren't hard to make run real good for two passes....

If I ran my 1515 1.5y on a x445 on 6s it would run super hard for about 2 passes then I would need to put it away.... as temps would be 135-140.... any more passes and I would be forking over $200 for another NEU..... so my answer is no esc will hold up if you aren't somewhat in the realm of reason.... you should be running a x440 or at the very most a x442 as a starting point with that setup..... any larger prop and its gonna cost you another $179 for another hydra 120.... you could also try a 40mm and a 42mm K series Graupner Prop if you don't wanna spend the dough on a balanced and sharpened octura....

playing with Castle esc's and Castle motors without knowing what prop you are even using is a very $$$$ proposition....definately find out what prop was on there and let us know.... I am quite sure the prop and ride attitude could be your problem...

[Steven Vaccaro]

A Hydra 120 or any other 120amp esc isnt enough amps for this setup. I suggest a Hydra 240.

[mustangboy_347]

it is a 42mm prop just got off the phone with my buddy....looks like i will be up grading to the 240HV HYDRA very soon.....

[mustangboy_347]

i will not use hydras cause so many have failed , i would go for a 180 seaking or 240 swordfish myself . but thats just my 2 cents worth

where do i get 1 of those swordfish you are talking about

[JMSCARD]

You don't need a HV240 for a 4s setup....

If you want a HV240 though I do have one for sale.....

$300 shipped.... with a extra cap board... it will handle your setup and then some.... or I have the turnigy 2000 monster HV esc too in the swap shop....

Here is the HV 240 its the bottom pic, the esc on the left....

http://forums.offshoreelectrics.com/...ad.php?t=17357

[andym]

The 240LV is the best 4 s option IMO, PLEASE by the data link cable and set your LV cut off correctly, 3.2 volts is a good place to be with this.
[QUOTE]as temps would be 135-140.... any more passes and I would be forking over $200 for another NEU..... [QUOTE]
Give the NEU motors some credit, I have a two year old 1515 1Y that regularly sees 150-160 deg F and a few times 180 and it still runs as strong and fast as the day I purchased it.

[Make-a-Wake]

Here's a 180a in the states.......$4.95 shipping, to your door in 3-4 days.

http://www.hobbypartz.com/07e-c-seaking-180a.html

[FighterCat57]

A Hydra 120 or any other 120amp esc isnt enough amps for this setup. I suggest a Hydra 240.

Steve hit the nail on the head here.

4s = ~14v x 120a = 1728watts
4s = ~14v x 240a = 3456watts

The 2200 will easily pull 2000 watts in that size hull even with a small prop. The Hydra 240 is the way to go and leaves room for growth.

If you want to stay with the 120, the x438 would be the largest prop I would use, maybe a 440 or K40 at most if temps stay low. MPH will be in the low 40's amps close to 100.

With the 240 and an m445... upper 50's. (best guesstimate from experience)