swordfish 220 esc

[dennislawler11]

i burned up my esc on sunday, i did not have any heat problems with it all day. last run it stoped working. i can still read the data logger.pulled a max of 219a 31000 rpms,but the temp was 135c. i am running an mlboatworks px335 tunnel on 4s with a leapard 4082 2000kv motor. can i add more water cooling to the next esc?

[kfxguy]

I usually add an extra cooling plate or make a bigger one on all my esc's. Here's an etti 150 I just did...



Something else to consider, never use less than 50c quality batteries in a high performance boat setup. Your current capability if it is not up to snuff, things will run hot.

[dennislawler11]

i have a new esc coming on wed, i will have to order a cooling plate. what did you glue that on with? my batteries are 45 to 90c .

thanks dennis

[kfxguy]

i have a new esc coming on wed, i will have to order a cooling plate. what did you glue that on with? my batteries are 45 to 90c .

thanks dennis

Are they turnigy batts?

I used a thin layer of jb weld to hold the plate on. Jb weld has alot of metal in it so I figure it should transfer heat well. There's heat sink or thermal epoxy if you want to get expensive with it.

[Fluid]

...Jb weld has alot of metal in it so I figure it should transfer heat well...

Not really, according to the MSDS it is only 5-10% iron:

Product Name: JB Weld
Ingredient(s) CAS # Percent
Fatty acids, C18-unsaturated, dimers, reaction products with Polyethylenepolyamines 68410-23-1..... 5 - 10%
Iron 7439-89-6...... 5 - 10%
Limestone 1317-65-3...... 10 - 30%
Oxirane, 2,2-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)]bis, homopolymer 25085-99-8 ...... 10 - 30%
Benzyl alcohol 100-51-6 %1 - 5
Formaldehyde, polymer with benzenamine, hydrogenated 135108-88-2..... 1 - 5%
Phenol, polymer with formaldehyde, glycidyl ether 28064-14-4 ..... 1 - 5%
Titanium oxide 13463-67-7 ..... 0.1 - 1%

Limestone is a pretty good insulator.

There's heat sink or thermal epoxy if you want to get expensive with it.

Let's see, use a $17 tube of real thermal epoxy, or buy a new $115 ESC when the old one burns up again. Hmmmm.... The thinner the layer of epoxy the less insulation it provides.




.