Topic: How does timing really work?

[old750]

I'd like to read up on timing, static and dynamic. Is there a write up on it anywhere on the web for bikes?

[05c50]

I'm not sure how much info you want, but Oldmanhonda has a pretty good explanation with illustrations in his Repair Hints section. Check it out here:  http://oldmanhonda.com/MC/MC.html   

.........Paul

[Deltarider]

For those that prefer the dynamic procedure and use a dwellmeter, here is a tip.
Years ago I have attached two ‘blind’ extra wires on my coils (12V-) both with a female connector at their end. Once you have set your timing correctly, these wires allow quick diagnoses later on.

You start with the points gap of 1&4. Set them between 46^o and 49^o (or between 51% and 54% if your dwellmeter reads American style). Do the same with points 2&3. Then set the timing. [Sorry, use the search function to find the correct procedure. I believe TT wrote a good one.] Then check again. Remember or write down the dwellangle (1&4 and 2&3) for future reference. Almost all changes in timing originate at the contactbreakers. When the dwell changes, so does the timing. When you suspect the timing is off, simply connect the dwellmeter to the extra lead 1&4 or 2&3 and you can verify if dwellangle is still the same or has changed. You can even set the timing now by adjusting the contactbreakers till your dwellmeter reeds the same digits as you had before.
It’s important that those female connectors are well shielded to avoid groundcontact.
I have had these wires attached for years now. What I like is that I can check really quick without even to remove the ignitioncover.

[strangedaze39]

Search, check out the wiki page. The FAQ thread has some good info. There is a great artical in the SOHC4 wiki. I'm sure google has a 1,000+ answers 2.