Re: Project Crossfire - a Rotrex Supercharged Limited!
Thanks for the info! It's nice to see someone with some knowledge to share. I'm really thinking that I'm facing a boost pressure issue now but if that doesn't pan out I will see this test through for sure! As well as take your advice on the wiggle room with the resistors!
Originally Posted by latemodel21
or ... you could just measure the resistance of the sc clutch (that is, I could have .... : )
I measure (with a very accurate meter) 3.89 ohms (on my slk32) .
At 14volts that is a hair over 50watts. The duty cycle being low, you may be ok with a 4 ohm 50 watt mounted away from anything combustible : )
Digi-Key - L50J4R0-ND (Manufacturer - L50J4R0)
EDIT
the manufacturer (of the above power resistor) states the following:
Power rating: Based on 25°C free
air rating.
Overload: 10 times rated wattage
for 5 seconds.
this part seems like it would work fine
EDIT 2
here are some better choices ... priced reasonably and aluminum cased with mounting holes
Mouser Electronics - Electronic Component Distributor resistor
Chris
Last edited by Web 3.0; Dec 24, 2011 at 09:56 AM.