cbr600rr coils on nc30 !!!

[MARSHnc30]

Hi guys hope someone can help ! I have seen on here that some people have put cbr600rr stick coils on nc30's just wondered how you go about doing it and is there any gains in doing it ? Thanks in advance

Dan

[Neosophist]

i wouldnt recommend it, knowing what i know now i would not fit stick coils onto a conventional bike unless i had no other option.

you can mod them to fit by wiring them in series, this lowers the voltage across them though so your running htem at 6v instead of 12v, your also firing them twice as often.

ive used them on a few bikes, nc30, nc24, zxr400 too. failures show up more on racebikes, especially zxrs.

if your original coils are knackerd then they will obviosuly give you a better spark right off the bat.

but that doesnt mean they are better than the stock igntiion system, actually quite the opposite.

stick coils are small becuase they do provide a weaker spark than tradiiton coils, the reason for this is that modern efi bikes run so good they dont need a massive spark to burn the mixture as it is setup good all the while.

for the amount of money it costs you can get some decent high performacne coil packs if your original coils are down.

coil on plugs tend to fail more often than traditional coils in general anyway.

its took off in popularity mainly due to the mis-selling of information, basically beucaes they come from new bike and look more modern people think they are a performance incrase,

but they fail more often, wiring them in series lowers voltage and runs them twice as much and they cost as much / if not more than a decent high power race coil will cost.

plus for carb bikes they are not the best.


only have to search the net for stick coil mod troubles and youll see loads of them.

i dynod the zxr back to back and it made no odds using stick coils over stock coils (didtn expect anything but just to check). one of the coils broke after about 6 motnsh and woudl intermittently mis-fire, binned them after that and went back to stock.

[MARSHnc30]

Perfect that's answered my question :) the bike is a race bike and hope to race it next year after 8 years out !! will have lots of questions coming up :D

[benny]

I'm just doing this mod at the moment, I'll let you know how it goes.
I've done it due to the limited space with the setup I'm running, spotted it on the Swansea boys bike and figured it a good idea.

[Morespeedvicar]

I've wanted to try a car coil pack, if I could find one with a similar primary resistance, more for idol curiosity than anything else
Cheers
Ian

[magg]

What neo said.

[ChowderV4]

ive run stick coils on my zxr race bike for 2 years now and have had no issues whatsoever, less so than when i ran standard coils.

But i only did the swap purely to tidy up the wiring and give me more space and less clutter with a ram air box fitted. there wont be any performance gains

[SPOONDIDDLY]

i wouldnt recommend it, knowing what i know now i would not fit stick coils onto a conventional bike unless i had no other option.

you can mod them to fit by wiring them in series, this lowers the voltage across them though so your running htem at 6v instead of 12v, your also firing them twice as often.

I'm curious as to how you wired yours, if they are wired the same way as stock coils, how does the voltage halve?

as long as they are wired the same way as stock, wouldn't they produce the same voltage over the gap? (if they have the same resistance)

[Morespeedvicar]

If you wire them in series (one after the other) joined to the original output from the tci then each one will have a voltage drop of 6v (half of the total input voltage 12v), the resistance of the coils doesn't matter from a voltage perspective if there both the same the voltage drop across each coil will be the same, its called a potential divider.
If you wire them in parallel each one will have the correct 12v powering it, but of coarse you double the current drawn from the tci, which would prob burn out its switching transistors.
Unless you could find some stick coil with double the resistance of the standard coil and wire in parallel then it would be the same as the standard one electrically, but you still wouldn't gain much apart from it looking neat and maybe a tiny bit of mass centralisation.............
Cheers
Ian

[Neosophist]

http://www.motorcycleproject.com/text/h ... coils.html

this is very interseting, espeically the last part about the "stik coil controversy"



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