Ignition coils

H

harpmeister

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UK
I'm looking for recommendations for coil(s) for a SF1 fitted with Moto Witt DMC32 electronic ignition

Would consider either two single or one dual output.

Looking for quality items only please.

 
Don't buy cheap coils from China. I tried that once and ended up throwing them in the bin. Only way they'd have made a decent spark was if they were struck by lightning.

Any well-known brand of coil should be OK. For a 360? twin, a double outlet coil will take up less real-estate under the tank than 2 x single coils.

The Nology coils (3 x single) I got from Red for my 120? track bike were excellent. Compact little coils with a great big fat spark. Good value for money too.
 

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Cam I was looking at the Nology coils but don't seem to be able to find much info on them from people that are actually using them, sounds as if you like them and if Red is suppling them they must be decent.

Would you happen to know if it would be the Pro-fire PFC-30D that I would need ?

Joe
 
TheWrongTrousers said:
Forgive my ignorance Grant, but I have no idea. How can I tell ?
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Ok, according to the  Faloon book, it seems that BTZ ignition replaced CDI from about 1979, so mine being a standard 1980 bike I think it must be BTZ right ?
 
Yes, 1980 should be BTZ.

CDI systems have in-built coils/black box and you can't change one without the other.
The BTZ system has separate (dual/single) coils and 2 black boxes.

To be honest, it's not so much the coils but the aging wiring on the pick ups, the crude advance/retard in the ignition curve and the puny single phase alternator chucking out something like 125 Watts that need replacing first.

Bite the bullet and get a proper Redax conversion. You get Nology coils, 3-phase alternator and modern reg/rec, new pick ups and wiring, and a programmable (if you so wish) Ignitech black box.

Replacing the coils alone will give you little return for the bucks unless there is actually something known to be wrong with them.
 
I have a Dynatek 3 ohm twin pole mini coil on mine with an Ignitech ignition, been there a few years, no issues with it. It might depend where you are what is easiest to get hold of.
 
Grant said:
Yes, 1980 should be BTZ.

CDI systems have in-built coils/black box and you can't change one without the other.
The BTZ system has separate (dual/single) coils and 2 black boxes.

To be honest, it's not so much the coils but the aging wiring on the pick ups, the crude advance/retard in the ignition curve and the puny single phase alternator chucking out something like 125 Watts that need replacing first.

Bite the bullet and get a proper Redax conversion. You get Nology coils, 3-phase alternator and modern reg/rec, new pick ups and wiring, and a programmable (if you so wish) Ignitech black box.

Replacing the coils alone will give you little return for the bucks unless there is actually something known to be wrong with them.
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That makes sense Grant. What would that all cost and what would the benefits be ?  - bearing in mind that the bike goes really well as it is.
 
Contact Red directly and check availability/price/specification. (Redax on the forum).
 
harpmeister said:
Cam I was looking at the Nology coils but don't seem to be able to find much info on them from people that are actually using them, sounds as if you like them and if Red is suppling them they must be decent.

Would you happen to know if it would be the Pro-fire PFC-30D that I would need ?

Joe
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Yes, a Pro-fire PFC-30D double outlet coil is exactly what I'd choose for a 360? twin. But check your DMC32 installation guide to make sure that 3 Ohm coils are OK without series resistors (I'm pretty sure they would be).

Nology coils are made in USA. If you can't find a local supplier in UK, they are available on line (eBay or other sellers) or you could buy them from Redax in Australia. If you have to buy from overseas, it probably doesn't matter whether they come from Australia or USA. I suspect shipping cost wouldn't be a lot different.

The equivalent Dyna coil (DC1-2) would do the job just as well - picture below.

 

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Dellortoman said:
Yes, a Pro-fire PFC-30D double outlet coil is exactly what I'd choose for a 360? twin. But check your DMC32 installation guide to make sure that 3 Ohm coils are OK without series resistors (I'm pretty sure they would be).

Nology coils are made in USA. If you can't find a local supplier in UK, they are available on line (eBay or other sellers) or you could buy them from Redax in Australia. If you have to buy from overseas, it probably doesn't matter whether they come from Australia or USA. I suspect shipping cost wouldn't be a lot different.

The equivalent Dyna coil (DC1-2) would do the job just as well - picture below.
Click to expand...
That is the coil I fitted to my road SF2. The racer with it?s 270 motor of course has two single pole of the same type. I?m pretty sure the type Grant fitted is the earlier version but probably fine too, just different arrangement for attaching the HT leads. As you can see they free up lots of space. That said, the original big coils were as bulletproof as you get, many bikes still have them even after all these years.
 
There's an endless selection of coils that would do the job. Any double outlet coil (or 2 x single) from a Japanese bike would work. They're readily available second-hand and usually in the 3-5 Ohm range.

I reckon my Jota is probably the only 180? triple that has two double outlet coils (spare outlet is earthed). They were on the bike when I got it but appear to have been scrounged from an old 4 cylinder Japanese bike of some sort. I sometimes wonder whether I should replace them. The bike fouls plugs occasionally. Well, not actually fouled, just failing to work properly even though they look perfectly OK. Maybe a stronger spark would increase plug life. Spark plugs are strange animals, so who knows?
 
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