|
Motorcycle Mechanics - Motorcycle Technical Discussion.
|
|
|
|
If you were Registered and logged in, you could reply and use other advanced thread options
|
Posted by Mr. Transistor on August 21, 2008, 9:16 pm
I pulled out my 1977 Suzuki TS-250 from 20+ years of storage recently and
about my only problem is an electrical one. I'm no expert in this area so I
hope someone can please offer a few suggestions.
Here is what happens..new 6v battery and engine running, in neutral with
neutral light on, if you signal a turn the turn indicator lamp in the speedo
comes on and flashes on and off as the blinkers operate, but it and the
neutral light sort of dim during the flash.
I believe that if the brake light is also on during this, it will dim when
the signal light flashes on, so it alternates in brightness with the
signals.
It's hard to describe but I hope you get the picture. Headlight, brake,
taillight seem to work well with engine running with or without the battery
installed.
So what might cause the dimming while a signal is on?
Many TIA
|
|
Posted by =?ISO-8859-7?B?w8TIy87Q09bY2Q= on August 21, 2008, 11:39 pm
> So what might cause the dimming while a signal is on?
Headlight flicker is fairly common for the smaller two-wheeled
flashlights
fondly referred to as "motorcycles", even when the turn signals are
not in use.
Some earlier small Japanese motorcycles used unrectified alternating
current from lighting coils to operate the headlight and tail light,
but your TS250 does have a rectifier, a voltage regulator, and a
mysterious resistor.
The rectifier might be just connected to the charging coils and not
the lighting system, you'll have to check your manual and wiring
diagram to see if the lights are using AC.
http://www.bikebandit.com/houseofmotorcycles/suzuki-motorcycle-ts250l-1974-=
electrical-1/o/m6804sch265643
shows a 2-wire voltage regulator.
http://www.bikebandit.com/houseofmotorcycles/suzuki-motorcycle-ts250l-1974-=
electrical-2/o/m6804sch266749
shows the rectifier and a resistor
http://www.bikebandit.com/houseofmotorcycles/suzuki-motorcycle-ts250l-1974-=
magneto/o/m6804sch285220
shows the magneto with its lighting coils, charging coils, primary
power supply coil for the ignition coil and pulser coil to trigger the
spark.
http://www.bikebandit.com/houseofmotorcycles/suzuki-motorcycle-ts250l-1974-=
turn-signal-lamp-ts250k-l-m/o/m6804sch276744
shows the turn signal "relay" which is probably the flasher.
The cyclical dimming of the indicator lamps is probably due to the
heavy current draw of the flasher.
|
|
Posted by ian field on August 22, 2008, 11:54 am
> So what might cause the dimming while a signal is on?
Headlight flicker is fairly common for the smaller two-wheeled
flashlights
fondly referred to as "motorcycles", even when the turn signals are
not in use.
Some earlier small Japanese motorcycles used unrectified alternating
current from lighting coils to operate the headlight and tail light,
but your TS250 does have a rectifier, a voltage regulator, and a
mysterious resistor.
The mysterious resistor is usually switched into circuit on AC lighting sets
when running on side lights - the 4W bulb (under the main beam bulb) + the
resistor equals the same load as the main bulb, without the shunt resistor
the lighting coil voltage would rise and blow the side/tail lights.
|
|
Posted by The Older Gentleman on August 22, 2008, 1:44 am
> I pulled out my 1977 Suzuki TS-250 from 20+ years of storage recently and
> about my only problem is an electrical one. I'm no expert in this area so I
> hope someone can please offer a few suggestions.
>
> Here is what happens..new 6v battery and engine running, in neutral with
> neutral light on, if you signal a turn the turn indicator lamp in the speedo
> comes on and flashes on and off as the blinkers operate, but it and the
> neutral light sort of dim during the flash.
>
> I believe that if the brake light is also on during this, it will dim when
> the signal light flashes on, so it alternates in brightness with the
> signals.
>
> It's hard to describe but I hope you get the picture. Headlight, brake,
> taillight seem to work well with engine running with or without the battery
> installed.
>
> So what might cause the dimming while a signal is on?
Perfectly normal with these little 6v systems. The indicators will work
better when the engine is running hard. And after 20 years, all it takes
is a bit of corrosion in the connectors to reduce the voltage at the
bulbs to as little as 5v and below.
I had a 1978 TS250, a few years ago. This one:
http://www.chateau.murray.dsl.pipex.com/images/ts250.jpg
Cleaning all the idicator connections will help. It would be worth
checking that you have the right wattage of bulbs in the indicators,
too, and that they're genuinely 6v ones.
Ignore Krusty's irrelevance.
--
BMW K1100LT Ducati 750SS Yamaha XT600E Honda CB400F
chateau dot murray at idnet dot com
"What you're proposing to do will involve a lot of time
and hassle for no tangible benefit."
|
|
Posted by Who Me? on August 22, 2008, 9:02 am
> I believe that if the brake light is also on during this, it will dim when
> the signal light flashes on, so it alternates in brightness with the
> signals.
>
> It's hard to describe but I hope you get the picture. Headlight, brake,
> taillight seem to work well with engine running with or without the
> battery installed.
>
Like others said, probably normal unless the other lights dim a LOT. Then
you might look for a corroded/missing ground......like from the steering
head to the frame or engine.
In general, it is NOT good to run the engine without the battery connected.
|
Page 1 of 2 1 2 > last >>
| Similar Threads | Posted | | Re: Anyone else have this problem? | June 23, 2007, 12:08 pm |
| Re: Anyone else have this problem? | June 28, 2007, 12:37 pm |
| Gearbox problem - BMW R80 | December 23, 2006, 5:29 pm |
| Stall problem | December 24, 2006, 10:01 am |
| Battery Problem? | April 27, 2008, 7:29 pm |
| FZR400 Starting problem | December 2, 2006, 10:14 pm |
| Funny CV carb problem | June 21, 2007, 5:31 pm |
| signal light problem.... | April 23, 2007, 9:47 pm |
| Simple gas flow problem | July 16, 2007, 9:28 am |
| Re: Virago charging problem | August 30, 2007, 9:42 am |
|
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap