Author Topic: Bregenze 750 Electrics  (Read 1002 times)

Offline Simon Y

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Bregenze 750 Electrics
« on: August 11, 2017, 08:32 »
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.
Series 2 180 Jota
750 Breganze
1200 Anniversary (previous)

Offline Gerald

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Re: Bregenze 750 Electrics
« Reply #1 on: August 11, 2017, 09:55 »
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
__o
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Offline Laverda SF

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Re: Bregenze 750 Electrics
« Reply #2 on: August 11, 2017, 10:45 »
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.
« Last Edit: August 12, 2017, 00:45 by Laverda SF »

Offline Simon Y

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Re: Bregenze 750 Electrics
« Reply #3 on: August 11, 2017, 11:35 »
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. ;D ;D ;D

I spoke too soon as the commutator is damaged - any suggestions?
« Last Edit: August 11, 2017, 17:38 by Simon Yates »
Series 2 180 Jota
750 Breganze
1200 Anniversary (previous)

Offline sfcpiet

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Re: Bregenze 750 Electrics
« Reply #4 on: August 11, 2017, 19:40 »
New brushes and armature...  can check next week what I find. ;D

piet
180s feel quick, 120s are...      If it ain't broke, fix it till it is.

"A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics"  Georg Fitch 1916

Offline Nat Magee

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Re: Bregenze 750 Electrics
« Reply #5 on: August 11, 2017, 22:08 »
Robson and Francis Rewinds (London) will fix that for you.