Changing Cutoff voltage on GWS ICS400 or ICS400E ESC

[Dinger95]

Anyone have any ideas on raising the cutoff voltage from the spec voltages. ICS400 - 4.2V and ICS400E - 3.2V to about 5.2V?

I haven't gotten mine yet, to see the circuit layout, etc. I'm mainly curious as to whether this will be as simple as replacing a SMT resistor or nearly impossible.

I also looked into the Jeti controllers but their cutoff seems to be about the same, so I went with the GWS ESC.

Basically I'd like to mod the ICS400 for use with 2 cell series LiPo packs for use with a speed 400. I'm currently thinking of the 5C discharge cells in a 2S2P pack.

I saw several mods for other ESCs, but nothing related to the GWS ESCs. I'll try a few more searches later.

Thanks.

[Dinger95]

Ok, have the ESC in hand, trying to modify the board looks like a pain. What I think I'm going to do is make a board that can be inserted and removed between the ESC and motor. This will allow the easy replacement of the ESC in case of burn-out and just require plugging the board on the new ESC. I'll most likely place a fuse on the same board

[Dinger95]

Well I decided to do a bit of playing, unfortunitely I have to wait for hardware to make sure I have things placed properly.
For instance, moving SCR1 and S1, so they are before R1. The cutoff is adjusted by changing the value of R2.

I'm thinking the board will consist of about 9 components. I attached the schematic, I brain stormed in Eagle v4.09. Which can be downloaded from http://www.cadsoftusa.com/.

I'll post a followup once I get the components and some time to test it. After testing I'll put up a parts list. For now consider this highly experimental.