Author Topic: Alternate coils  (Read 265 times)

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Offline Retropin

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Re: Alternate coils
« on: February 19, 2013, 02:23:38 AM »
Thats a lot of info to digest.
basics are that F is the size of the coil.. so bottom line is that whatever numbers you replace with.. the F is a must or it may not fit.
36 is the gauge or thickness.
7000 is the number of turns.
Ratio of turns to gauge determines the amount of current your coil pulls... its this current value that you need to match.. you can go slightly under with no real noticeable effect to coil strength but never go over.

To work out a replacement coil you need to get to the same value.. this is where those that dont like me doing a bit of maths tend to turn off.

The current =  voltage X ( number of turns / gauge)

Make sure its an  F  ( physical size of the coil)  and equal your current number and all is good.. can use a substitute with no issues.