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Old age, poor eyesight. Taking things for granted #425894
03/24/12 1:31 am
03/24/12 1:31 am
Joined: Mar 2012
Posts: 74
Texas USA
Tinker Tom Offline OP
BritBike Forum member
Tinker Tom  Offline OP
BritBike Forum member

Joined: Mar 2012
Posts: 74
Texas USA
I purchased a ziplock bag full of NOS headlamp bulbs at a rally several years ago. They stayed in storage until last winter when I built my latest bike. Finally after all the work of the build came the time to start the thing. With a voltmeter on the battery I observed the voltage dropped to only 7V at low RPM's. The charging system was ailing.

I futzed around with it for about a week trying everything. Different regulators, different alternator windings. It blew the bulbs out one by one and the alternator would not charge properly if I ran the headlamp.

Nothing made sense. My alternator OHM'd out fine. It put out the proper unloaded AC voltage, but at low RPM it wouldn't charge when I burned the headlamp.

My neighbor was over helping me with it one day. I had just started the bike with the voltmeter installed using the last bulb in the bag. He was holding one of the burned out bulbs in his hand. Reading the tiny etched lettering inscribed on the base of it.

He said, "You do know these are six volt bulbs don't you?"

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Re: Old age, poor eyesight. Taking things for granted [Re: Tinker Tom] #425900
03/24/12 1:58 am
03/24/12 1:58 am
Joined: Aug 2001
Posts: 6,003
Vermont
Jon W. Whitley Offline

BritBike Forum member
Jon W. Whitley  Offline

BritBike Forum member

Joined: Aug 2001
Posts: 6,003
Vermont
This must fit into the context of the old adage of it's the simple things! They get most of us every time.


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project

Re: Old age, poor eyesight. Taking things for granted [Re: Tinker Tom] #425903
03/24/12 2:07 am
03/24/12 2:07 am
Joined: Aug 2011
Posts: 216
Hailey,Id.
B
bsawood Offline

BritBike Forum member
bsawood  Offline

BritBike Forum member
B

Joined: Aug 2011
Posts: 216
Hailey,Id.
I been there done that. The little [***] kicks my ass on a regular basis. I'm too focused on the hard stuff.

Re: Old age, poor eyesight. Taking things for granted [Re: bsawood] #425949
03/24/12 10:42 am
03/24/12 10:42 am
Joined: Sep 2007
Posts: 266
Australia Tweed Heads
Crazy Offline
BritBike Forum member
Crazy  Offline
BritBike Forum member

Joined: Sep 2007
Posts: 266
Australia Tweed Heads
YUP beerchug

Re: Old age, poor eyesight. Taking things for granted [Re: Tinker Tom] #425955
03/24/12 11:46 am
03/24/12 11:46 am
Joined: Sep 2005
Posts: 5,864
NL
G
Ger B Offline
BritBike Forum member
Ger B  Offline
BritBike Forum member
G

Joined: Sep 2005
Posts: 5,864
NL
I remember that embarresement from a series of newly built ships, where the construction yard
or the electrics subcontractor had decided to use identical lamp sockets for the 230V light network and for the 24V emergency lights.


Ger B


Moderated by  Allan Gill, Jon W. Whitley 

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