Smoked a new SV 27 Motor!

**egneg** · 01-10-2010, 06:16 PM

Sorry to hear it ... if I could answer that I would not have fried my Etti in 3 minutes!

**Diesel6401** · 01-10-2010, 07:16 PM

Originally posted by bigwaveohs View Post

First run on our SV 27: (2) 4500mAh 30C LiPos w/X440/3. Motor fried in 4 minutes. What did we do wrong?

I know when I received my SV from Tower the drive shaft wasn't hardly greased at all and their was a tiny piece of the packing styrofoam that protect the rudder inside the box clogging the rudder pickup. I'm new to the hobby and don't know that much, but it could be things like that may have made the motor work that much harder or not properly cooled. Or just bad motor from stock. Sorry bout your luck, it's a super fun boat.

**bigwaveohs** · 01-10-2010, 07:24 PM

Originally posted by Diesel6401 View Post

I know when I received my SV from Tower the drive shaft wasn't hardly greased at all and their was a tiny piece of the packing styrofoam that protect the rudder inside the box clogging the rudder pickup. I'm new to the hobby and don't know that much, but it could be things like that may have made the motor work that much harder or not properly cooled. Or just bad motor from stock. Sorry bout your luck, it's a super fun boat.

When we got the SV 27, the shaft was a total mess...goo instead of grease so I cleaned everything, ran in the bushing at the stinger with an electric drill and greased with GrimRacer cable grease. It was perfect before we ran it...I suspect that there was something wrong with the bearings and that they were binding. This pulled excessive current which in turn fried the windings.

Comments?

**Diesel6401** · 01-10-2010, 07:37 PM

Originally posted by bigwaveohs View Post

When we got the SV 27, the shaft was a total mess...goo instead of grease so I cleaned everything, ran in the bushing at the stinger with an electric drill and greased with GrimRacer cable grease. It was perfect before we ran it...I suspect that there was something wrong with the bearings and that they were binding. This pulled excessive current which in turn fried the windings.

Comments?

Ouch, sorry bout ur luck

**slyman** · 01-10-2010, 08:03 PM

Was water flowing through the cooling lines?

**bigwaveohs** · 01-10-2010, 10:05 PM

Originally posted by slyman View Post

Was water flowing through the cooling lines?

Water was shooting out of the water outlet to about 12" to the side of the hull and the ESC was hot but not fried like the motor...very strange. I have a VS-1 tunnel with a UL-1 motor and the same waterjacket as the SV 27 and the UL-1 motor runs cold at 50mph!

**m4a1usr** · 01-10-2010, 10:41 PM

You might have had a bad connection on one of the motor leads. The wires can be hard to get to a good solder joint on. I'm assuming the end bells did not pop loose?

John

**slyman** · 01-11-2010, 08:30 AM

Contact your dealer if this was a new boat for a possible warranty claim. I have found that Aquacraft stands behind their products.

**bigwaveohs** · 01-11-2010, 11:28 AM

Originally posted by slyman View Post

Contact your dealer if this was a new boat for a possible warranty claim. I have found that Aquacraft stands behind their products.

It was our LHS...wonder if I should contact Aquacraft directly? However, all I could find was Great Planes the distributor...???

**Diesel6401** · 01-11-2010, 12:52 PM

Originally posted by bigwaveohs View Post

It was our LHS...wonder if I should contact Aquacraft directly? However, all I could find was Great Planes the distributor...???

Hobbico Inc; aquacraft, great planes, duratrax and pretty much a bunch of other well known brands are all under the Hobbico Inc brand. To answer your question Great Planes is a distributor their all the same. http://www.aquacraftmodels.com/techsupport/index.html hopefully this helps

**Brushless55** · 01-12-2010, 01:38 AM

Originally posted by bigwaveohs View Post

When we got the SV 27, the shaft was a total mess...goo instead of grease so I cleaned everything, ran in the bushing at the stinger with an electric drill and greased with GrimRacer cable grease. It was perfect before we ran it...I suspect that there was something wrong with the bearings and that they were binding. This pulled excessive current which in turn fried the windings.

Comments?

If your talking about the motor, they turn over very hard by hand..
normal for this

**Brushless55** · 01-12-2010, 01:41 AM

Originally posted by m4a1usr View Post

You might have had a bad connection on one of the motor leads. The wires can be hard to get to a good solder joint on. I'm assuming the end bells did not pop loose?

John

I had this happen on one of my SVs.. I thought I burnt the motor and found a loose connector on the motor..

**bigwaveohs** · 01-12-2010, 10:50 PM

The motor was so hot that white smoke was coming from under the hatch when we brought it in...you could fry eggs on it!
The insulation burned off the windings...the bearings are toast too!

**Brushless55** · 01-12-2010, 10:54 PM

Originally posted by bigwaveohs View Post

The motor was so hot that white smoke was coming from under the hatch when we brought it in...you could fry eggs on it!
The insulation burned off the windings...the bearings are toast too!

ok now I understand its not the connectors..

that sucks and I have no Idea why unless the stuffing tube was not installed right..
my budy took a SV backs because the stuffing tube was installed wrong and caused alot of drag on the shaft and poped the esc