Shocker First Maiden Run -- ESC Literally BLOWS through Hull

[dmitry100]

The motor seems to rotate just fine ... just like the other motor. I'll see if I can pop open the front cover plate on the motor though... a flat head screwdriver should do it ?

To avoid burning up another ESC incase the motor is bad... should I just try running it on 3s-4s first to make sure it doesn't start getting too warm again, or is there another way to go about it?

[dmitry100]

Any of you guys make/sell some nice looking CF ESC and servo mounts for these cats? :)

[flraptor07]

Any of you guys make/sell some nice looking CF ESC and servo mounts for these cats? :)

Get with Kent @ Custom CF Parts http://www.customcfparts.com/ He's nata2run on the forum.. As far as testing motors I have one of these motor testers, they work great! http://www.ebay.com/itm/SKYRC-BL-Mot...item33a1ef236e

[dmitry100]

They should be pretty easy to cut though right? As long as I can find some chicago screws I could probably try to whip it up myself using some of Keith's CF plate. Would a hacksaw for metal work?

[dmitry100]

Ok, so now I'm actually pissed.

Look what I found

Photo May 06, 9 30 03 PM.jpg Photo May 06, 9 49 37 PM.jpg

The other side of the water jacket tubing actually ripped... easily without any force.

AND This is actually the side of ESC/Motor that didn't blow!

[IRON-PAWW]

Sheesh! You just aren't having any luck here are you? Looks to me like that cooling system needs to be entirely re-worked like the guys here have said. That kink in the water line is just no good.....at all. You can't have any kinks or restrictions like that whatsoever. On a higher rpm system like you've got especially, you need your cooling system to be as free running as you can get it. install some proper under hull or rudder pickups to get a decent waterflow through the lines as well. I always do a few passes right in front of me when I first run my boats to check the waterflow out of the exit ports. I'm done cooking my gear too.

If you go under hull pickups can anyone suggest the best place to locate them. As far toward the rear as is doable right? Cat peeps?

At speed - would those current pickup holes actually pickup any water at all?

[iop65]

like i said from day one : something wrong with cooling ,hot set up but it will work if eveything is ok , little room for errors
from the first foto's you can see that the intake is not what i should be and it looks like the whole coolingsystem is a joke


all those talks about a bad esc , a bad motor......that's in most cases talk to ease your pain
really, i have been in the rc hobby some time (first cars )and the only electric thing that malfuctioned on me so far are bad lipo's or some time ago bad nimh
never have i encountered a bad esc, receiver, motor , servo ,bec......never

must be the luckiest guy on the planet i guess , hope it keeps like that for another 25 years

[tlandauer]

Ok, so now I'm actually pissed.

Look what I found

[ATTACH=CONFIG]131660[/ATTACH] [ATTACH=CONFIG]131661[/ATTACH]

The other side of the water jacket tubing actually ripped... easily without any force.

AND This is actually the side of ESC/Motor that didn't blow!

Checking the cooling loop is paramount before maiden. However, the fire you experienced can't just be attributed to poor cooling. How can you explain that this side did not go
I believe on the contrary: blaming on the cooling is actually the obvious, there could have been more than one factors that contributed to your situation. Without a "flight data recorder" we may never know the exact cause.
In any case, the water fitting should be on top and make sure no cooling hose is pinched in the future as shown in your pictures.
I pump water thru the entire loop prior to fist time sailing.
I don't think the various speculation is either a desire to make the OP feel less pain or the opposite. When a thread like this pops up, opinions are going to come in regardless if there is any ulterior motive.
I don't understand how and why speculating on ESC and motor is an attempt to lessen the OP's pain.
Last thing we need is the " I told you so mentality"----talk about inflicting pain.
I am surprised for any one who has been in the RC hobby for so long would rule out the possibility that for everyone it may be different. Just because one person did not have a single failure on motor , ESC, radio, etc. doesn't mean the ENTIRE RC world had to be judged against this yard stick.

[IRON-PAWW]

Heck! Good pick up on the cooling jacket outlet tlandauer! The cooling jacket simply will *not* fill with water if the outlet is down the bottom. in fact, the motor cooling jacket will only fill as high as that outlet point. So you want that outlet point on top and on the higher side of the jacket. That is definitely something that *will* contribute to hot motors. Again - good spot tlandauer

[kevinpratt823]

I have had motors fail, and take out an esc with a couple blips of the throttle. I belive he bought this boat from somebody, possibly already run? Is it really a stretch to wonder if somebody cooked a winding before selling it, especially with little to no cooling?

I have also run boats with blocked cooling lines, they did not fail immediately under a couple partial throttle blips as the op is describing.....

[iop65]

nobody did anything wrong , the boat is pure craftmanship , no clue what could be wrong, i guess he just had bad luck
is this better mr Landauer?

oh and by the way , i've been around some clubs and something sticked out : it where always the same guy's who had " bad luck " when they bought something , and it where always they same guys who's electronics seemed to last for ever
stange strange strange isn't it?

[T.S.Davis]

install some proper under hull or rudder pickups to get a decent waterflow through the lines as well.

With some killer pickups you might have been able to push past those kinks. The pickups shown in earlier pics probably only provided minimal pressure. Then with a pinch........no water.

Rudder pick ups are more reliable as they're always in the water. Prop wash pickup loops are great too but always look so cheesy to me. A bottom feed is in the water until you are really flying which this setup probably will be. Still canould work though. People do that but the tube needs to be pointed into the water for it to work well.

Check out picture number 2 on one of Steve's pickups. http://www.offshoreelectrics.com/pro...prod=ose-80515 It's angled into the flow of water.

I still would go with a rudder inlet given the choice.

[martin]

The kinks in the tubes is a no no, but also the jacket inlet & outlet fittings both sitting at the bottom of the jacket will not let the jacket to fill with water.

[Luck as a Constant]

Shocker First Maiden Run -- ESC Literally BLOWS through Hull

nobody did anything wrong , the boat is pure craftmanship , no clue what could be wrong, i guess he just had bad luck
is this better mr Landauer?

oh and by the way , i've been around some clubs and something sticked out : it where always the same guy's who had " bad luck " when they bought something , and it where always they same guys who's electronics seemed to last for ever
stange strange strange isn't it?

You know, you've done nothing but condescend to people in here, insult the op's intelligence, and your commentary is rife with snark.
Guess we all forgot you're the God of the fe boating hobby.

Besides, I'm sure others in here, like me, can barely understand you.
"It where always"?!?
I'm still trying to figure that one out....
Sent from my iPhone using Tapatalk

[Doug Smock]

Please keep it on the surface fellas.
Say it with me. At the end of the day we're grown men playing with toy boats.