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Electronic ignition - 1959 Dommie 99

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Can anyone help me, I am intending to upgrade my electrics to 12v and install electronic ignition on my '59 Dommie 99.

I haven't been able to find any real information on doing this, and when I looked on the Boyer website they only listed kits for Commando's

Where can I get a kit from, roughly how much am I looking at and what will it consist of?

I have been told that I will be able to use the original 6v coil what else can I still use and what will be replaced?

The more detailed information I receive the better (feel free to get technical my friend, who is assisting me, is a qualified electrician and will understand technical terms)

Hope to hear from you.

G.

Permalink

Hi Gareth.

I suppose you had better read the NOCstuff first:

http://www.nortonownersclub.org/support/technical-support-electrical/6v-to-12v-alternator-conversion

You will need to buy new bulbs, hooter, coil/s but you maybe ok with your existing alternator or stator. Then a zenner or regulator ...see further down.

These are also quite informative

http://www.classicmotorcycles.org.uk/c15/c15_12v_conversion.htm

http://www.gabma.us/elec/6Vto12V.pdf

You should then choose if you want the zenner diode set up or a modern fully regulated electronic voltage/charge control unit:

http://www.norbsa02.freeuk.com/goffyelectrex.htm

The zenner set up is very crude and wastes electrical energy and therefore ultimately petrol! Whereas the modern electronic control should regulate and keep a constant 12volts (revs allowing) and just tap off the required charging current,the zenner diode dumps all the excess from the alternator to ground. So even without your lights on and a fully charged battery, your poor old alterntor is kicking out its full load just to power the coil and heat up the planet!

The 99 uses a distributor does it not? If so the Boyer unit will only need to have one sensor and you will only require one new coil to buy so a cheaper conversion than a twin points set up.

Personally, I would stick with the conventional points. They are reliable, wonât suddenly break down leaving you stranded. They are very cheap especially compared to Electronic systems and keep the character of the bike the same as original. The only disadvantage is that you may have to adjust them very occasionally, but an easy job all the same.

Les

Permalink

Thanks Les. I have already downloaded the NOC stuff, but I'll certainly check out the other links.

I have spoken with Boyer and they do not make a kit for the Dominator (but have given me some numbers of people who claim to make conversion kits to make other Boyer kits fit!!

Previously wrote:

Hi Gareth.

I suppose you had better read the NOCstuff first:

http://www.nortonownersclub.org/support/technical-support-electrical/6v-to-12v-alternator-conversionhttp://www.nortonownersclub.org/support/technical-support-electrical/6v-to-12v-alternator-conversion

You will need to buy new bulbs, hooter, coil/s but you maybe ok with your existing alternator or stator. Then a zenner or regulator ...see further down.

These are also quite informative

http://www.classicmotorcycles.org.uk/c15/c15_12v_conversion.htmhttp://www.classicmotorcycles.org.uk/c15/c15_12v_conversion.htm

http://www.gabma.us/elec/6Vto12V.pdfhttp://www.gabma.us/elec/6Vto12V.pdf

You should then choose if you want the zenner diode set up or a modern fully regulated electronic voltage/charge control unit:

http://www.norbsa02.freeuk.com/goffyelectrex.htmhttp://www.norbsa02.freeuk.com/goffyelectrex.htm

The zenner set up is very crude and wastes electrical energy and therefore ultimately petrol! Whereas the modern electronic control should regulate and keep a constant 12volts (revs allowing) and just tap off the required charging current,the zenner diode dumps all the excess from the alternator to ground. So even without your lights on and a fully charged battery, your poor old alterntor is kicking out its full load just to power the coil and heat up the planet!

The 99 uses a distributor does it not? If so the Boyer unit will only need to have one sensor and you will only require one new coil to buy so a cheaper conversion than a twin points set up.

Personally, I would stick with the conventional points. They are reliable, wonât suddenly break down leaving you stranded. They are very cheap especially compared to Electronic systems and keep the character of the bike the same as original. The only disadvantage is that you may have to adjust them very occasionally, but an easy job all the same.

Les

Permalink

Previously wrote:

Can anyone help me, I am intending to upgrade my electrics to 12v and install electronic ignition on my '59 Dommie 99.

I haven't been able to find any real information on doing this, and when I looked on the Boyer website they only listed kits for Commando's

Where can I get a kit from, roughly how much am I looking at and what will it consist of?

I have been told that I will be able to use the original 6v coil what else can I still use and what will be replaced?

The more detailed information I receive the better (feel free to get technical my friend, who is assisting me, is a qualified electrician and will understand technical terms)

Hope to hear from you.

G.

Hello Gareth Have you tryed Pazon Electronics ? These guy do the kit your looking for ? All Go www. wylesmotorcycles.co.uk

Permalink

This link has most of the options: http://www.norbsa02.freeuk.com/goffypazon.htm

This is the direct link to Pazon: http://www.pazon.com/

FWIW I am running an old Boyer Power Box with a Kirby Rowbotham ignition: http://www.kirbyrowbotham.com/ignitions.php?page=3

Charging and ignition have been completely reliable with this set up for about 10 years.

Cheers

Al

Previously wrote:

Hello Gareth Have you tryed Pazon Electronics ? These guy do the kit your looking for ? All Go www. wylesmotorcycles.co.uk

Permalink

Hi, I have just been asked a similar question about ES2 conversion to 12V. It came about as I have just converted my 1960 Puch 175 SVS split single to electronic assisted ignition, using a product from Rooster Booster ignitions. At the same time I also fitted an electronic regulator DVR4 from Dynamoregulators. The advice from both was excellent, and the products are well made, easy to fit and work perfectly.

Personally, I would convert to 12V and fit a well known electronic ignition, a good look around the web on the links you have been provided and some others, you will certainly not be short of methods.

Permalink

Previously wrote:

hi the if you wanted to convert over to 12v the cheepest way is to use a honda cb250 regulater rectifier as you can get them easely at a brakers or new and thay are boom proff thay will also work with a 2 or 3 pole alternator or a dynemo you will then have to change all bulbes , the coil and horn and persanaly i would stay with the points ignition as i have had problems with the optic type electronic setups geting dirty and cuting out

eny way hope this helps

chris

Unfortunately there is some poor information above. I do NOT know of any regulator that will control an alternator AND a dynamo. I would not fit something off a Honda with totally unknown specification to a British Bike. We are dealing with motor vehicles here, if they break in usage people can get hurt. I do not know of any opto type ignitions worth fitting. One major advantage of the magnetic (Boyer-Pazon) is doing away with the mechanical advance retard.

Regarding fitting electronic ignition to Dommies then there is every chance you have an 18D2 distributor. I can fit up electronics to that. I recommend 12V I recommend you fit twin coils and in fact the pickup I make (it uses the normal two pickups as per Boyer, there is no case to use one coil in the pick up) uses the MK IV Boyer ignition. 12v Traditional Zener diode is possible (Zener diode voltages are very variable) it wastes about 0.1 of a horse power! so I think its wastage is not worth mentioning. You can use a modern Regulator/rectifier, (could work out cheaper) I sell both. You should fit a 2MC replacement type capacitor.

The 18D2 Kit costs about £150 inc coils. While there is 18D2 work to be done (extra if I do it)

All parts are available from me (amongst others!) A O Services

Permalink

Previously wrote:

Can anyone help me, I am intending to upgrade my electrics to 12v and install electronic ignition on my '59 Dommie 99.

I haven't been able to find any real information on doing this, and when I looked on the Boyer website they only listed kits for Commando's

Where can I get a kit from, roughly how much am I looking at and what will it consist of?

I have been told that I will be able to use the original 6v coil what else can I still use and what will be replaced?

The more detailed information I receive the better (feel free to get technical my friend, who is assisting me, is a qualified electrician and will understand technical terms)

Hope to hear from you.

G.

Greetings from the antipodes,

Try this bloke,

http://www.trispark.com.au/

Just about to replace my power hungry ancient Boyer with a new Tri-Spark ignition and dual output coil (Commando MkII). One of our local Norton club chaps fitted one and the transformation is amazing. ALL fits inside the standard points cover too, no black box. However Steve from Tri-Spark does a distrubutor retrofit for Magnetos too, which I may look at for an elderley Beeza, and its cheaper than getting the dreaded Lord Lucas, Prince of Darkness magneto properley overhauled.

Just a thought.....

Rgds Steve

Permalink

I converted my 60---99 to 12vabout 20 years ago ,i fitted a zener diode in a bsa heat sink under the tank front a 12 v coil , a small encapsulated rectifier under the tool tray and a few minor rewiring alterations, the hooter, points etc stayed, eventually i added a 2mc capacitor as used on the Atlas which allows flat or no battery starting, later i added a Pazon points booster to take the load off the points. This means that if there is any problem on the road I can remove the pazon,2mc or even the zener and still ride home,(with the lights on to protect the battery).

 

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