14s Brushless Savage

[mckrill]

Thanks for the nice words!

Finally an update..

I just received the Schulze ESC back from service - with the worst thinkable scenario "no fault found - check the motor"..

Crap

Before sending the ESC I checked the motor by running it at 6s, as that was the highest voltage working ESC I had. The motor seemed to run just fine..

Anyhow - I checked the voltage on my Hyperion G3 cells, which I charged for storage last time. Negatively surprisingly I found one of the 6s packs to have a very swollen cell, the 2s pack had only 4v = destroyed. These packs has always been balanced, never charged above 5C, and totally only had 10 cycles = worst crap I have ever bought!!

Luckily I had a set of 3s 3300mAh 45-90C on the shelf, so I could set up a 12s test set up. The motor still cogged, and the heat started to build up in the ESC immy. It however appeared to function a little better than on the 14s test I did before sending it.

I see two scenarios:
1. The test at Schulze was just a diagnostic test and the ESC is still broken
2. The motor has a damaged winding enabling it to function somewhat at lower voltages.

Since I have no other motor that can handle 12s or 14s I decided to buy a Typhoon just for test. The Typhoon corresponds to the Neu 1527, but half the price (and likely half the quality). Compared to the Lehner it's about 3/4 in size and weight.



The specs are:
780KV, 38mm diam, 98mm length, 8mm axle, Pcont 2400W, Pmax 4800W, Weight 560gms.

I will post my findings on the Lehner once I have had time to take a look inside it.