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Post by robert1c on Jul 22, 2012 22:02:22 GMT -5
Hi dawgpound,
I have an issue with my headlights. While on the road the lights seem to dim then return to full strength. This is under constant throttle. Can you guys give a young pup any ideas where to look for this issue?
I have had my VOG for 2 weeks and so for I have repaired:
1) Headlights-Now running H4s
2) Sliders-Now running. Blend of 4.5 & 10.5s
3) Left hand control- Replaced/converted from the 6-pin to the Jonway 9-pin
4) Luggage box- Added box with extra tail/blinker lights
5) Clutch- Waiting on the clutch to arrive
Next:
LEDs- tail and blinkers
Front left fork leaking
I have learned so much from reading your posts so I would like to trow all you big dawgs a bone for all the info you all have posted.
A true thank you!!!
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Post by OverReved on Jul 22, 2012 22:11:48 GMT -5
You'll want to clean out the dirt-dust-crap-etc from under your flywheel-magneto rotor- bell (whatever you want to call it)as all that good stuff can keep the stator from supplying proper charging voltage to your bike. resulting in that bright then dim situation. a good high pressure blowing out with compressed air from a compressor through any bolt holes that may be accessible on it's face should result in quite a cloud of dust.
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Post by robert1c on Jul 22, 2012 23:09:39 GMT -5
Thanks OverReved for the heads up. I'm not sure where the "Flywheel" is but I'll do a search and see what comes up.
I probably should start a new thread on the next issue but is there an issue with just replacing one fork vs. both? And if not is it possible to just order one? And do you guys know of a site that sales inexpensive adjustable rear shocks for the VOG? I have found some but there in the +300 dollar range.
Thanks again bigDAWGS. I hope to contribute to this forum soon.
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Post by OverReved on Jul 22, 2012 23:47:48 GMT -5
The "flywheel" is the part your fan will be connected too that cools the engine. It will be under a ,most probably, black plastic shroud on the right side of the bike when you are sitting on it. When you remove the fan the holes for the bolts securing the fan can be blown into with your compressed air to clear out the debris it the stator area.
If after a good cleaning the problem persists we can look at the voltages coming out of your voltage rectifier and determine if there is a problem there.
You can order and replace only one fork. Lots of people like to replace them in pairs but I feel that would only make sense on a high mileage bike or one that is around 8 years or older. Most motorcycle parts guys would agree with me.
I'm not to heavy into aftermarket parts, but I'm sure there are decently priced adjustable rear shocks available. Perhaps someone will chime in on that and get me interested in replacing mine!
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Post by robert1c on Jul 23, 2012 0:04:02 GMT -5
Are you talking about the cooling fan right behind the front tire? That has the black shroud (fan cover) right? I'll pull that tomorrow.
My scoot has 8,000 plus mile on it and is 4 years old.
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Post by OverReved on Jul 23, 2012 0:33:15 GMT -5
Ah you have one of the big 250cc cruisers, I failed to notice that. Your bike will have the stator located under the solid aluminum cover on the Right hand side of the crankcase for the engine when you are sitting on the bike.  because of this I highly doubt there is any contamination there that would cause your Lights to act as they do. ( there's oil behind there don't be taking it off! ) You should look instead at your rectifier. When the engine is running and the Stator magneto is spinning around all those coils of wires an alternating current is produced. This alternating current travels through those wires to the rectifier and other components where it is converted to DC current which then is used to run the accessories of the bike and charge the battery. When the rectifier isn't working properly it doesn't fully convert your AC voltage to DC and causes the lights to have that pulse. A quick check you can do to verify this is happening is start the scooter and with a multimeter ( digital preferred ) check any ground and positive 12V battery wire( the battery is a good place to check this at) for AC voltage. Ideal AC voltage at the battery is 0 Volts but up to .5 Volts is acceptable ( any more and you could see things like lights flicker and analogue gauges flutter) DC voltage is 12.6 not running 13.5-14.2 Volts engine running. |
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Post by robert1c on Jul 23, 2012 6:42:10 GMT -5
Agh... Ok the rectifier sounds like my issue. I'll check this tonight and post an update. I'm lucky that I have a parts shop that is local to me. Chinesepartsforscooter.com is here in town.
Thank you for the heads up.
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Post by WarrenS on Jul 23, 2012 8:23:12 GMT -5
What could cause the lights to dim at a steady speed is the fan coming on. It draws quite a bit of electricity.
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Post by OverReved on Jul 23, 2012 11:05:59 GMT -5
What could cause the lights to dim at a steady speed is the fan coming on. It draws quite a bit of electricity. The complaint was "dim and fluctuate" So a more precise diagnosis is AC ripple from the charging system. |
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Post by WarrenS on Jul 23, 2012 16:04:41 GMT -5
I read " they seem to dim and then return to full strength."
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Post by OverReved on Jul 23, 2012 17:44:50 GMT -5
I read " they seem to dim and then return to full strength." Thread title. |
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Post by robert1c on Jul 27, 2012 6:41:37 GMT -5
Hi guys thanks for the help. They do dim while riding but then bump right back up. This doesn't happen necessarily when the fan comes on. It just happens. I thought maybe a loose wire but it happens when I'm sitting at a light as well.
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Post by EPAhater on Jul 27, 2012 7:21:06 GMT -5
I read " they seem to dim and then return to full strength." Thread title. This is real funny from someone who earlier told someone to look for a fan on the flywheel of a water cooled scooter. ;D ;D You're paying attention skills are as bad as your google ones.  |
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Post by rcq78 on Jul 27, 2012 17:33:20 GMT -5
I believe it's the fan coming on that causes this....It draws more juice to start,but once started the voltage draw drops....it takes 2-3 times more juice to start any electric motor,120 or 12 volts...I have 2-250b's & they both do this,just for a split second when the fan starts....Bob
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Post by OverReved on Jul 27, 2012 18:34:24 GMT -5
This is real funny from someone who earlier told someone to look for a fan on the flywheel of a water cooled scooter. ;D ;D You're paying attention skills are as bad as your google ones. Read post #5 fella. The original poster didn't disclose information on what scooter or engine he had, I did take notice he posted in the 250cc section but only after what they said made no sense |
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Post by EPAhater on Jul 27, 2012 19:23:07 GMT -5
Read post #1 fella: I have had my VOG for 2 weeks and so for I have repaired:Need to pay attention sonny! Brush up on those reading skills while you're learnig to googl better.  |
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