I have an old Cat that used 2 6 cell batteries and twin engines. The mechanical speed control switched the batteries from parallel to serial so half speed was 7.2 volts and full speed was 14.4 volts. I think it had a slow and/or reverse that ran through a resistor. I want to revive it with an ESC. Any recommendations? Maybe an eTraxx ESC?

Gordon,
i have a rc hydro speed control i will sell you, it been completely remanufactured from rc hydros. here are the specs it would suit you perfect ! $75 + shipping.
let me know, thanks , Dave

- V60-612/BEC Features -

# Watercooled & Waterproof
# 6-12 cells
# 1Amp BEC good for 1-2 servos
# 1.5" x 2.25" x 0.5" thick (40 x 65mm x 13mm)
# Programmable for Pistol-grip or Stick transmitters
# Programmable Low-Voltage-Cutoff (LVC) to save your LiPo cells
# Programmable PWM to match your motor's inductance best
# Weighs only 1.2oz (41g) including wires
# 4-FET design for low on-resistance (.0008 ohms!!)
# 300A surge current, 60A continuous with water cooling
# Three-color LED shows OFF, PARTIAL, and FULL POWER settings
# All adjustments are done on your transmitter - no pots to fiddle with!
# Universal JR-style servo connector (compatible with Futaba, Multiplex, Hitec, and Airtronics Z
# 12" servo leads allow flexible positioning
# Fail-safe powers down on radio signal loss (but doesn't glitch)
# Safe-On feature prevents glitching on power-up
# 12AWG wire for minimum resistance
# Recommended for 6-cell Stock and Modified motors (N1, N2) and 12-cell Speed 700
# Manual available Online

Can you post the link to the manual? And who makes it? Does the Water cooling require an optional part, or is simply a matter of plumbing?

http://www.rc-hydros.com/ its a victory controller. they competely redid it for me, ne wones go for $90, this is as good as new ! it has the watercooling built into it, you just need a water pickup and some tubing (plumbing).
let me know if you want it, if not its going on the for sale section ASAP !
thanks, Dave

E-Mail me at gordon at niessen dot "to" and we can discuss it. Looks very interesting.

CHECK YOUR PMS'S i tried your email but i was somewhat lost?

Sorry, I get too much spam in my diet and am trying to cut back.

gordon a_t niessen.to

Simpler?

you should have mail?

hello i just purchased a fast cat and it needs 1 rudder do you know where i could find one.thanks

Gordon,
Simplest thing to do is to determine how much current your motor draws at max and get an ESC that's rated for that. That usually means doing a 'stall' test on the motor to find max amps. Then just read the ESC specs till you find one that will handle it. A little 'extra' ESC is better than not enough ESC.
- 'Doc

Don't think they are being sold anymore. You might find an alternative at your local hobby shop. Or one that can be cut down to fit.