SOHC.co.uk Forums > CB500/550
Electronic ignition
Oddjob:
Use the Hondaman system, best of both worlds. If it fails on a run you can revert to points within a couple of minutes. Points last a very long time as it reduces the sparking at the faces.
http://sohc4shop.com/catalog/product_info.php?products_id=32&osCsid=54a6f2d00f03c0932c586efa44cad603
oldboy:
Are/is there any noticeable benefits in performance/starting etc with this system??
kevski:
I have used Boyer's on a fair few bikes and never had any problems, these are electronic ignitions, you could also opt for a Dyna-s which is an electronic trigger and retains the original advancer i have used these with no problems also, but as with all bikes your charging system and batteries have to be well maintained or you will run into problems.
Oddjob:
The Dyna system as noted by Hondaman uses an additional 1 amp.
Read all Hondamans points at the bottom and you can see the benefits.
One advantage he doesn't state is that you retain the original coils, some systems don't and you always get members on here asking about Ohms for coils etc. The Dyna coils for instance aren't known for being the best.
deltarider:
Maybe it's good to realise that any EI is in essence nothing but a switch in the NEG path of the ignition coil's current. It's only because the transistor involved, cuts current way faster than a mechanical contactbreaker, that the induction produced is better, which in its turn results in a slightly more reserve for the energy of the spark. The rest is imagination and projecting ideal properties. No EI will produce even one HP more over a stock kettering ignition in good condition. Because there's no sparking between breakerpoints, there is a slightly better spark in the low rpm, resulting in a possibly nicer idle and a somewhat better performance in the high rpms. After some consideration - I didn't want electronics in a vulnerable place - I have built my own transistor ignition some 20 years ago, bluntly copying the Velleman kit K2543 (X2 ofcourse) which has been applied by many owners of a vintage vehicle. It has proved utterly reliable. The breakerpoints which now only switch the control current, live for ever (mine nearly 60.000km now) and they hardly ever need readjustment. Like Hondamans, I can return to stock within a couple of minutes. Actually I presume Hondamans is the same as mine, as there aren't that many Darlington transistors for this task. I have knowledge of only two or three. Back in the day the first such a transistor (TIP) was developed by Texas Instruments, especially for the automotive industry. I have no idea why no more make their own. I mean, if I can do it, anyone can and the electronic components are not that expensive.
Never understood what's so special about the Boyer & Bransden. Why you'd want four plugs to fire simultaneously, is an enigma for me. To me it seems that's energy wasted... Well, such an EI is cheaper to make ofcourse, that I know. All in all there's a lot you can sell with the invisible mysteries electricketry and magnetism. Boyer & Bransden... I guess you pay for the name, in this case you pay for both names. A lot of companies use this name & name trick, as to suggest one family could not have been enough to reach this quality. Seems folks are easily impressed by double names.
Here are a few:
Johnson & Johnson - talcum powder
Cross & Blackwell - spices
Benson & Hedges - homocide
Smith & Wesson - homocide
Bonnie & Clyde - banking
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