Opinion please - Flame Thrower Coil

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Model T Ford Forum: Forum 2014: Opinion please - Flame Thrower Coil
Top of pagePrevious messageNext messageBottom of page Link to this message  By Tyrone Thomas - Topeka KS on Saturday, July 12, 2014 - 10:37 pm:

Flame Thrower has a 6 volt, 40,000 volt output coil. Good or bad for a T and/or an A running stock plugs?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ricks - Surf City on Saturday, July 12, 2014 - 11:11 pm:

It will spark before reaching 40KV unless you open the gap WAY up.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Royce in Georgetown TX on Sunday, July 13, 2014 - 12:11 am:

Tyrone,

To achieve 40,000 volts the coil must be very low resistance. That means it will require a very high input current. You need to consider the consequences of that. It most likely will not give you any performance increase.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dave Wells on Sunday, July 13, 2014 - 12:15 am:

Doesn't sound very correct either.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kevin Whelihan on Sunday, July 13, 2014 - 08:17 am:

What people tend to forget is that coils in most systems only produce the voltage that is required to jump the spark plug gap. If you system is capable of 40K volts and your plugs only need 4K volts to jump the gap, that's all it will produce. The exception to that rule would be capacitive discharge systems that produce higher voltages consistently. Any stock automotive coil will produce 40K volts. That voltage is achieved by the rapid switching of the current by electronic components that allow for super fast breakdown of the primary windings that produces higher voltage in the secondary. That being said, the coil will only produce what is required to jump the plug gap. I can't see any Model T or A (even a fairly modified one) making use of all that voltage to fire the plugs that are in decent condition.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tyrone Thomas - Topeka KS on Sunday, July 13, 2014 - 08:52 am:

kool, thanks all


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