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GriffinRU
RC-Monster Aluminum
 
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Posts: 748
Join Date: Oct 2005
04.08.2007, 01:39 AM

Quote:
Originally Posted by zeropointbug
Well, I did an eagletree test, and what I got was 42,000 rpm max, with a brief full throttle pull.

I can't remember the voltage the eagletree said, but either the volts the eagletree is reporting under load is wrong. OR, the rpm the eagletree is reporting is wrong. I am using the two wire RPM sensor.

Because that would require a voltage of 17.5 volts...... no way! The A123's under a little load will hover around 16 - 16.5 volts.
Well, 2 phases to define RPM is not very accurate, but close enough. If you run this test many times then you can get better averaged value, couple runs is not enough.
5% error will be about 2100 RPM which is good resolution for given sensor pickup.
   
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