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AmokCrow
Aug 04, 2005, 01:07 PM
I've noticed that there is some demand for cheap speed controllers out there. Or at least that's how it seems.
So I'd like to collect tips on how to find/make cheap controllers, preferably for high amps also as some boats/motors can draw a lot. ;)

I myself like to just increase the capasity of small (cheap) commercial controllers with FETs. Instructions for it I found here: http://lennokki.innoplaza.net/
Schematic's found under the link named "Mallikytkis".

An example: a GWS ICS-50 $15 + 4*IRFZ44N $1 each. Total: $19, takes 30amps without cooling.

The amount of FETs that can be added is unlimited, about one FET for every 5 amps recommended if there is no added cooling.

-Michael
pompebled
Aug 04, 2005, 04:27 PM
If you can get your hands on one, the MIMIR esc from CTI can handle 30V 50Ah continuously without cooling (34,00 Euro incl. shipping in Europe).

Write to Helmut Marshall: mail@cti-aichtal.de

Regards, Jan.
patmat2350
Aug 04, 2005, 07:10 PM
Why bother soldering?
Hi-Tec EZX-R does 46A fwd and has simple reverse, good for scale boats running NiMH/NiCd, $35. See my ESC review at http://geocities.com/y2patmat/

Pat M
AmokCrow
Aug 05, 2005, 01:21 AM
Soldering's worthwhile when you can't get a hold of any cheap controllers othervice.
Ever heard of Finland in northern Europe?
Neither have controller manufacturers.

And shipping costs to here can sometimes be somewhat unreasonable BTW.

-Michael
Tony Oliver
Aug 05, 2005, 04:31 AM
I only use car controllers and in general they are at least 30% cheaper. Reverse usually has a delay built in and at lower spped than forward. Useful to have in general.
Ghost 2501
Aug 05, 2005, 09:07 AM
Tony, even the mtronics marine range have a reduced reverse top power setting,
pompebled
Aug 05, 2005, 05:32 PM
Soldering's worthwhile when you can't get a hold of any cheap controllers othervice.
Ever heard of Finland in northern Europe?
Neither have controller manufacturers.

And shipping costs to here can sometimes be somewhat unreasonable BTW.

-Michael

Nevertheless, mail Helmut and ask what he'd charge you for the MIMIR, you might be surprised...
I just ordered a pair for 68 Euros incl.shipping.

Regards, Jan.