Skip to content

How To: Magneto testing

August 16, 2010

In earlier magneto articles some info was presented about rebuilding and swapping condensers / capacitors.  Links are here and here.


When the magneto is ready for testing, there is a simple method you can use.  Attach some rubber hose to the drive end of the armature with a hose clamp, then insert a metal bar in the other end of the hose with another hose clamp.  Spin the metal bar with your cordless drill or with a lathe.  Don’t forget to ground the plug to the magneto chassis with a bit of safety wire. 


You can advance and retard the timing, vary the speed, check for spark with large plug gaps, run at elevated temperatures…  It is all pretty easy to do on the bench, without building up the entire motorbike and getting it running. 


No comments yet

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

%d bloggers like this: