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N2 - N3
Feb 17, 2015 6:51:47 GMT -7
via mobile
Post by pceng on Feb 17, 2015 6:51:47 GMT -7
Other day ohms were discussed for n3........ I was wrong in my thinking at the time. Both n2 & n3 show same ohm restriction. Only difference between the two that I see are - custom arms & voltage. I think the ohm restriction for these classes is meant to indicate a range. As when 5 or 6 ohm pancakes are the subject. MM/PS is called a 3ohm class, but 2.6 (I believe) is the min ohms. Pancakes, referred to as both 5 & 6 ohm classes in the past have a 5.7(I think) min. N2 - 22v min The only factory arm I know of that has advanced timing is the Slottech green wire. Since this arm ohms at 2.7 the rules seem to indicate 2.7 or 6 as a min. N3 - 24v min Other than possible differences in timming if custom arms are used. Voltage is difference between the two classes.
Not sure why n2 & n3 are so similar (other than.voltage). When you get down to it, if an arm falls within given range & specs. Does it matter who wound it ? An arm is going to perform based on the wire and amount used. Not who put it there. If the difference between these two classes was to allow rewinding. And rewinding has become a prerequisite. Then applying the same thought to pancakes in the future seems inevitable.
............ Peter
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N2 - N3
Feb 17, 2015 8:36:48 GMT -7
Post by Phantom B.S.E. on Feb 17, 2015 8:36:48 GMT -7
Other day ohms were discussed for n3........ I was wrong in my thinking at the time. Both n2 & n3 show same ohm restriction. Only difference between the two that I see are - custom arms & voltage. I think the ohm restriction for these classes is meant to indicate a range. As when 5 or 6 ohm pancakes are the subject. MM/PS is called a 3ohm class, but 2.6 (I believe) is the min ohms. Pancakes, referred to as both 5 & 6 ohm classes in the past have a 5.7(I think) min. N2 - 22v min The only factory arm I know of that has advanced timing is the Slottech green wire. Since this arm ohms at 2.7 the rules seem to indicate 2.7 or 6 as a min. N3 - 24v min Other than possible differences in timming if custom arms are used. Voltage is difference between the two classes. Not sure why n2 & n3 are so similar (other than.voltage). When you get down to it, if an arm falls within given range & specs. Does it matter who wound it ? An arm is going to perform based on the wire and amount used. Not who put it there. If the difference between these two classes was to allow rewinding. And rewinding has become a prerequisite. Then applying the same thought to pancakes in the future seems inevitable. ............ Peter If someone winds their own arms they can make timing changes, choose single or double wind, and choose gauge of wire used for winding. I might like to try in this winding biz one day. Finding the time is the hardest part for me.
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N2 - N3
Feb 17, 2015 12:23:16 GMT -7
via mobile
Post by pceng on Feb 17, 2015 12:23:16 GMT -7
Choices do exist before winding begins. Guage , single vs dbl winds. But.having a desired ohm range. Eliminates most choices. The 2.7 ohm arms from Wizard & Slottech both use 36g wire. Slottech states this on their site. If you look at one of their arms, the stacks are pretty much full of wire. 35g being of less resistance would need more wire to get to desired ohms - won't fit on stacks. 37g would need less wire, but will not produce enough torque. Double winding to get 2.7 would need wire smaller in dia than stock wire. Each stack would have to be a total of 4.05 ohms. If wire guage used was the same, each piece of wire going on stack would have to be 8 ohms. Actually more, each piece being 8 ohms would yield only 4 ohms. Being .05 short will leave finished arm short of desired goal. So when it comes to winding. The only choice one really has is what one wants the arm to ohm. Wire guage and windings are almost dictated by this. I say almost because wire guages are not one specific size. But a range from one number to another. So two wires of the same guage from different mfg's could have different resistance per foot or given lenght.
Choices exist but are fewer than one might think.
.......... Peter
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