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General Category => General Discussion => Topic started by: GuzziV50 on May 25, 2025, 08:29:21 PM

Title: Dyna S in a v50iii
Post by: GuzziV50 on May 25, 2025, 08:29:21 PM

Does anyone know if the stock mechanical advance unit is used when installing a Dyna S  in a V50iii?

Thanks much!

Title: Re: Dyna S in a v50iii
Post by: Dirk_S on May 25, 2025, 08:49:13 PM

Yep—I installed one on a Lario last year. The quick description from their webpage states:

Quote

The Dyna S is completely housed behind the ignition cover and uses a magnetic rotor with the original spark advancer, so the factory advance curve is maintained.

You can also download the instructions from their website:

 https://www.dynaonline.com/dyna-s-ignition-system-for-1979-1987-moto-guzzi-v35-v50-v65-1/?srsltid=AfmBOoolHvyIOCtC5qFEP7nGZqTerlLwZPNXeh75bpmnKOIrxl29KIfH (https://www.dynaonline.com/dyna-s-ignition-system-for-1979-1987-moto-guzzi-v35-v50-v65-1/?srsltid=AfmBOoolHvyIOCtC5qFEP7nGZqTerlLwZPNXeh75bpmnKOIrxl29KIfH)

Title: Re: Dyna S in a v50iii
Post by: pehayes on May 26, 2025, 12:42:37 AM

Yes.
And because it is exposed to the air and the dust discharge from the front wheel they system requires annual disassembly, cleaning and lubrication.
If you mark the Dyna-S carefully you can remove and reinstall without altering the ignition timing.
Caution:  The magnetic rotor can be installed TWO ways and only one way will run the engine.  Mark carefully before you disassemble.

Patrick Hayes
Fremont CA

Title: Re: Dyna S in a v50iii
Post by: paulbricey on May 26, 2025, 05:42:59 AM

Pics on V50 III shows adv & then Dyna S on top. I love Dyna S compared to points BUT be careful to use 'quality' coils (OEM ones are good generally, but aftermarket resin ones maybe less)....one of my aftermarket 4 ohm resin coils went south/burnt out & blew out the associated Dyna S unit on the plate. I had to buy another Dyna S and replaced the coils with lucas metal ones...no probs since.


(https://i.ibb.co/4wf1CjhY/dyna-s.jpg) (https://ibb.co/4wf1CjhY)

Title: Re: Dyna S in a v50iii
Post by: Pescatore on May 26, 2025, 09:53:23 AM

It's discounted a few bucks now.
I guess it's solid state switches, so no more spark nor condensers needed.  One less thing to worry about.

Title: Re: Dyna S in a v50iii
Post by: moto-uno on June 01, 2025, 09:34:48 AM

  That has to be the peak of irony , replacing failed coils with British Lucas coils  :grin: