DYNA 2000 with separate ignition coils

[Nickel]

If I remeber right, I saw somewhere here pictures of a oilboiler engine with a DYNA 2000 and separate coils on each spark plugs. 

Am I right? Does anybody have such a setup? If yes, what coils are best of use? 

Thanks in advance 

[zedhead]

I was told by a reputable auto electrician (specialising in bikes) that it'd work perfectly okay but would slowly fry the plug-top coils ... however, I have also heard of people using them with no issue whatsoever, but what type /spec of coil seems to be something of a secret. Or maybe people just don't want to tell me?...

I'm going to use some on a project, I bought some from a later model GSX-R750, if I remember correctly.

[MeanBean49]

49 minutes ago, zedhead said:

I was told by a reputable auto electrician (specialising in bikes) that it'd work perfectly okay but would slowly fry the plug-top coils ... however, I have also heard of people using them with no issue whatsoever, but what type /spec of coil seems to be something of a secret. Or maybe people just don't want to tell me?...

I'm going to use some on a project, I bought some from a later model GSX-R750, if I remember correctly.

Cant see why it would fry them at all.all your doing is wiring them to fire in pairs the same way a coil does. Not putting any extra load or current through them than they would normally be doing anyway.

Pretty much any coil cap off a modern bike will do, they are pretty much all the same denso ones anyway

[zedhead]

20 minutes ago, MeanBean49 said:

Cant see why it would fry them at all...

My thoughts exactly Rob! ;-)

[Gixer1460]

Check the resistances - most that i've checked are sub 1 ohm usually around 0.7 ohm which when paired up is only 1.5 ohm and below the Dyna 2000 minimum coil range of 2.2 ohm. Not saying it won't work but dragging nearly 10A through power transistors designed for 6A can't be good long term?

[MeanBean49]

21 minutes ago, Gixer1460 said:

Check the resistances - most that i've checked are sub 1 ohm usually around 0.7 ohm which when paired up is only 1.5 ohm and below the Dyna 2000 minimum coil range of 2.2 ohm. Not saying it won't work but dragging nearly 10A through power transistors designed for 6A can't be good long term?

How can dragging half the current they normally deal with be bad for them? They deal with 16A if not paired up origionally. Paired up its 8A

[Gixer1460]

1 hour ago, MeanBean49 said:

How can dragging half the current they normally deal with be bad for them? They deal with 16A if not paired up origionally. Paired up its 8A

I'm confused - when does a Dyna 2000 EVER output 16A ? Most COPs are driven by standalone coil amps designed for high frequency and high current switching................Dyna's ain't!

[MeanBean49]

28 minutes ago, Gixer1460 said:

I'm confused - when does a Dyna 2000 EVER output 16A ? Most COPs are driven by standalone coil amps designed for high frequency and high current switching................Dyna's ain't!

Nothing outputs Amps, output is a voltage, and the current is entirely dependant on the resistance of what its flowing through.

16A is what the coil sticks will draw when paired up, they will still only draw the exact same 8A as they did on the bike they were taken from. So in answer to the origional question it wont fry the coils sticks.

If the dyna is up to a flow of 16A through it is a completely different question.

And most cdi's (dyna is the same im sure) dont have the coil supply flowing through them at all. They just provide the switching signal. The supply comes direct from the battery

Edited July 16, 2018 by MeanBean49

[Gixer1460]

1 hour ago, MeanBean49 said:

If the dyna is up to a flow of 16A through it is a completely different question.

That was the whole point of my post! As most COP's are driven using ECU's having high power output amps (rare) or via standalone ign amps - Dyna longevity with COP's is questionable! Everyone assumes that they are fed 12v power - it could be lower so reducing the current requirements? They also tend to utilise iridium type needle tip plugs that require far less HT voltage to jump a gap - all adds up?

[MeanBean49]

35 minutes ago, Gixer1460 said:

That was the whole point of my post! As most COP's are driven using ECU's having high power output amps (rare) or via standalone ign amps - Dyna longevity with COP's is questionable! Everyone assumes that they are fed 12v power - it could be lower so reducing the current requirements? They also tend to utilise iridium type needle tip plugs that require far less HT voltage to jump a gap - all adds up?

Or just use a good cdi like an ignitech and dont worry about it.

Dyna stuff is old hat expensive rubbish

[mikeyd]

Nick, I use 2001 gsxr 600 c.o.p.'s.  1.4 A per stick x2 = 2.8A. well within Dyna 2000 specs. There is a wiring diagram somewhere on this forum to show you how to wire it in.

[mikeyd]

And these guys are right, Dyna is becoming obsolete, but its still newer than my motorcycle.

[MeanBean49]

1 hour ago, mikeyd said:

Nick, I use 2001 gsxr 600 c.o.p.'s.  1.4 A per stick x2 = 2.8A. well within Dyna 2000 specs. There is a wiring diagram somewhere on this forum to show you how to wire it in.

How do you get 1.4A per stick? That would make them 8.6 ohm resistance?