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Tractorsport Flowbench Forum Archive • View topic - My 80amp SCR Motor Controller

My 80amp SCR Motor Controller

Discussion on general flowbench design

Postby cspeier » Sun Nov 01, 2009 3:59 pm

cspeier
 
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Postby Tony » Sun Nov 01, 2009 4:16 pm

Also known as the infamous "Warpspeed" on some other Forums.
Tony
 
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Postby cspeier » Sun Nov 01, 2009 6:45 pm

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Postby cspeier » Mon Nov 02, 2009 9:26 pm

I didn't have time today, but will check line voltage in the morning.

I used the bench all day today. The head I was working with allowed me to flow at 28" with the sharp edge. I did find out real quick that a sharp edge is the ONLY way to have stable accurate readings! The hole I made was turbulant and fluctuating the cfm numbers.

The SCR got a 6 hour workout and worked flawless.

I have a servo on the way for the POT. Thinking I can adjust the depression with it. I'll keep everyone posted!!
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Postby cspeier » Wed Nov 04, 2009 12:18 pm

Voltage at the plug: 249v

Voltage drop across the SCR at full speed: .6 of a volt

Amps across the SCR: 22 total

Used this bench for 2 days straight logging appox 7 hours of bench time, worked flawless!
cspeier
 
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Postby bruce » Wed Nov 04, 2009 1:23 pm

I picked up a similar control/parts off eBay over the past week and will be giving it a try as another option for the Payne Control/HF Control.

Later this year when I build another PTS bench (specifically for testing) I'll add this control to run all the motors.
"There is no more formidable adversary than one who perceives he has nothing to lose." - Gen. George S. Patton
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Postby cspeier » Wed Nov 04, 2009 8:52 pm

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