Bregenze 750 Electrics

[Simon Yates]

As suggested I have cleaned the terminals and no starter operation as yet on my '69 750. 
This is a slow process of elimination at the moment to find the issue.
When the starter relay operates I expect the starter to draw 10-12 amps across the relay but it is showing zero amps.  The battery shows 13 amps when briefly touched with my multi-meter.
Bypassing the relay and connecting the starter to the +ve terminal produced a very slight movement once only and then nothing.

 

[Gerald]

Hello Simon,

Do you have access to a set of jumper cables and a known good battery? i.e. from a car or something else with hefty starting power.
Sounds to me that the battery in the 750 is weak.

Good luck
Gerald

 

[Laverda SF]

You can by pass the starter relay by jump starting the starter with a charged battery to spin the mill. The Starter relay maybe NFG - Any simple external starter relay will work.

Test the starter relay by shorting the main circuit across the relay with a wrench or a big screw driver - Maybe your starter switch is the culprit and if you got a Lucas Key Ignition Switch - GET RID of IT.

That's providing the Starter will wind Up on it's own.

 

[Simon Yates]

The starter brushes are the culprits.  The have disintegrated as you can see.  It was obvious that the springs had bottomed out as soon as the cover was removed.

I spoke too soon as the commutator is damaged - any suggestions?

 

[sfcpiet]

New brushes and armature...  can check next week what I find.

piet

 

[natm]

Robson and Francis Rewinds (London) will fix that for you.