What controller to buy for brushed motor with LiPos - RC Groups
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Apr 09, 2004, 05:02 PM
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nuevo's Avatar

What controller to buy for brushed motor with LiPos


I'm fairly new to electrics. I'm building a few depron foamies and putting a GWS-350C "D" motor in each.

I've heard that LiPo's have different cutoff voltages than NiCd/NiMh, and that I had better not let my voltage get to low.


I am looking for some inexpensive controllers with BEC for these motors that have the voltage cutoff set for LiPo. Who sells them? I expect 5-10A continuous draw.

TIA,

Jon
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Apr 09, 2004, 07:33 PM
Castle Tech
Joe Ford's Avatar
Go for a Castle Creations Pixie 20P...programmable low voltage cutoff...6v for 2s lipo, 9v for 3s lipo. Can get em on here for around $30...new cost a little more like $35
Apr 09, 2004, 10:43 PM
Registered User
nuevo's Avatar
Thank you.

I had just heard about Castle Creations recently. I have had a tough time finding any "LiPo" compatible speed controllers. The market's changing pretty fast these days.
Apr 09, 2004, 10:46 PM
Registered User
Dr Kiwi's Avatar
The Pixie 20P is an excellent choice, though it is $39.95 on the CC website - who sells it cheaper than the manufacturer?

Cheers, Phil
Apr 11, 2004, 12:06 AM
Castle Tech
Joe Ford's Avatar
toddsmodels.com has em for $36.95. Sure there are other places that are even cheaper.
Apr 12, 2004, 11:27 AM
Registered User
Would a GWS ICS-300 Speed controller work with the Etec 1200-3S Lipo pack?

Thanks

Mike
Apr 12, 2004, 11:49 AM
Registered User
Quote:
Originally Posted by mrebman
Would a GWS ICS-300 Speed controller work with the Etec 1200-3S Lipo pack?

Thanks

Mike
It will "work", but the cut off voltage is set for NiCd or MiNh and is too low for LiPo. It is not programable and therefore one must learn to observe the loss in power to determine that the Lipos are dropping voltage. This is not very accurate and you risk discharging the LiPos too deeply which can ruin an expensive pack.

The really only safe way is to purchase the Pixie or any other programable ESC mentioned above.

Sierra Gold
Apr 13, 2004, 10:37 AM
Watch This !!!
edkoz's Avatar
You can't go wrong with Castle.
Apr 19, 2004, 11:38 PM
Registered User
nuevo's Avatar
Thank you everyone. I ordered two 20P's from Hobby Horse . They have then in stock for $34 ea.


Jon