Coil strengths

[Paul]

Ok so i understand the basics.... say a 30-2000 means 2000 turns of 30AWG wire. However how to compare them in strength, and suitability?

I'm short of a 30-2000. However i have some 26-1200. Are they interchangeable? What's the difference in power?

There must be an easy way of working it out...!!!

 

[Sgt GrizZ]

Pinball Medic website has some sort of coil comparison chart thingy iirc

Sent from my C6603 using Tapatalk

 

[jonathan]

http://pinballmedic.net/coil_chart.html#solenoid_coil_sleeve_chart

 

[Paul]

Thanks chaps

 

[Nedreud]

It all boils down to resistance. Your 30-2000 is generally the sort of coil used on a bell or chime and has a resistance of around 45-50 Ohms. A 26-1200 (often used for knocker, kicker or slingshots, etc) will have a resistance of around 12 Ohms. These values all depend on the dimensions of the bobbin the wire is wrapped around, but I plugged in the same values for both calculations for an average coil bobbin of 20mm diameter and 50mm long.

Since the voltage isn't being changed replacing with a lower resistance coil will increase the power. In this case dropping from 45-50 down to ~12 could be too much. The solenoid could bang itself to pieces or fire the ball too hard causing damage.

Always best to get an exact replacement, or as close as possible, e.g., a Bally 31-2000 in this case might do the trick.