Dyna S problem

[Jay1969]

Cheers Kev, I've got plenty of time to decide so I'll see how it goes when the time comes to purchase.

...agree Adrian, I had an A4 for about 18 months over 24 years ago (not had a bike with points since) and the points let the bike down somewhat.

[FOZ1A]

Update!

I spoke to Ferrett last night, he wired the bike, and he reckons that if you wire an aftermarket electronic tacho on the low tension side of the coils, the Dyna is prone to burning out. He reckons that the Boyer is a better system, and when he wired my loom he made it future proof by putting in the wiring for a Boyer! I have stuck with the Dyna and will find an alternative way to feed the tacho.

foz

[irhobotolo]

Fitted a dyna s 2 years ago to my Z1 and no problem since. Was a pig to set the timing to start with as the screw slots were wrong but the bike ran better when the points and condensers went.

[Jeff Saunders]

One of the weaknesses of the Dyna-s is it's lack of tolerance to voltage extremes. In the majority of cases we've seen it's a poor regulator or a bad battery causing the issues.

Going back 2-3 years, Dynatek did have a run of bad parts. But since then their reliability has been very good. The newer Dyna-S ignitions have a much smaller pickup - very streamlined. I have one of their early test units in my Z1A - it's been in for a season and a half now and I've not had an issue with it.

It is important to check your charging system before you put any miles on the bikes with any brand of electronic ignition. It's a simple test - just put a test meter across your battery terminals, and watch with the bike running. Raising the rpm over 3,500 and the voltage should cap around 14v - anything over 15v and the regulator is duff.

[z2.john]

Have to say Dyna units are over rated.
My first one failed after about 18 months on 1/4. I put it down to bad luck since everyone seems to think they are the dogs, so I bought another and that too failed after about 9 months.
Be interested to know how many other failures are out there

Thought I'd resurect this thread. This is a picture of my 3rd Dyna failure whilst out today. Am I doing something wrong

[big green bus]

does anybody have one dyna module I could buy I need one for my sons z440, I cannot get direct replacement for the 440 so fitted my gpz1100 one as a stop gap.

[Garn 1]

I, have used DynaS's for the last ten years and have had one unit I had to return. They told me the serial number was out of warrantee and wanted to charge me half the price of a new one to get it fixed... Its still there at their factory.
I'm wondering if the new "thinner" units are better and not so susceptible to voltage extremes as Jeff suggests.

I was very disappointed with Dyna's rejection of warranty, particularly, as I was a strong supporter and advocator of these units over many years. The warrantee was rejected on the grounds that serial number was older that 2 years. I had the blood# thing for 3 years before I put it on!

"Big green Bus" if I can get DynaS to return my unit you can have the working module.

Regardz

[wilsonsjw11]

John
What voltage is your alternator putting out
Have you got an original regulator and rectifier
Regards
Steve

[z2.john]

John
What voltage is your alternator putting out
Have you got an original regulator and rectifier
Regards
Steve

Hi Steve,
It has a modern reg/rec unit fitted so wouldn't have thought that was the problem, unless thats knackered too.
I'll take a better look this weekend