acm1
Junior Dawg
Posts: 6
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Post by acm1 on Apr 11, 2012 11:13:08 GMT -5
I decided it would be easier to make a video showing what's wrong with the bike.
Do you think it could be the battery (it shouldn't be it's new & trickled charged)?
The Starter Clutch (The long gear slip at the end of the video)?
Thanks,
Any help is appreciated
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Post by Stash on Apr 11, 2012 11:49:34 GMT -5
sounds like not enough juice on the battery. the starter will disengage and spin free. try jumping it from a car. if it starts fine, then Id go with the battery. My stock battery sucked, after a month or so, i could charge it all night and it would still die the next day. you can pick up a new one at walmart for about 35 bucks. Have you tried kick starting it? if you do then be real easy with it, I found out the hard way recently that hard kicks with just tear up the kicker.
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Post by timber on Apr 11, 2012 12:20:12 GMT -5
Dont keep doing what you did at 40 seconds in...
I'd say the battery doesn't have enough power or the starter itself is defective internally.
Just because a battery is new doesn't mean it can't be defective, it could be a bad battery from the factory that isn't taking the charge.
You should get at least 12+ volts out of it, if it's 11.5 or something it's got a problem.
Usual way to check a wet automotive acid/lead battery is with a hygrometer to test the specific gravity of each cell and you can easily find one cell that's gone bad, but you don't have that luxury with these scooter batteries.
Maybe you can take the battery out of the scooter and put it on a regular 2 or 5 amp battery charger not trickle, for a few minutes, checking it in say 15 minutes to make sure it's not getting hot, I wouldn't leave it on the regular charger very long, a half hour might be enough to tell- putting it back in and see if it made any difference at all, if it did, even a little, then the battery is at fault, maybe leave it on the charger out of the scooter circuit for another half hour.
These batteries are very small so it's easy to over do it and cook them with an automotive charger.
I would never use the "boost" or quick charge function on the charger- on the battery OR the scooter, too much current, which is why I say take the battery OUT so you cant damage wirings or some other components during charging.
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Post by mainepeace on Apr 11, 2012 12:57:12 GMT -5
I will say with 100% certainty the battery is low on charge. If you charged it, the battery is toast. The bendix does that when it does not spin at a fast enough speed. The cause of the dead battery could be one of many things, and you will have to give more info on the history of the scooter, up until the time you made the video.
Greg
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acm1
Junior Dawg
Posts: 6
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Post by acm1 on Apr 11, 2012 13:06:55 GMT -5
I just checked the battery with my multimeter & I got 12.5-12.6V
So that seems good.
Now All I get from the scoot is a click noise & from previous bikes I'm pretty sure that's my solenoid.
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Post by Stash on Apr 11, 2012 13:09:07 GMT -5
on a car, you can whack the starter with a hammer if its sticking, on a scooter, maybe a 8mm wrench?
Have you tried jumping or kick starting it?
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Post by wile on Apr 11, 2012 13:38:28 GMT -5
To check if its your Solenoid, jump the 2 terminals on it, if it spins your starter your Solenoid is bad.
Wile
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acm1
Junior Dawg
Posts: 6
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Post by acm1 on Apr 11, 2012 13:40:30 GMT -5
I connected the two terminals with a screwdriver & it didn't do anything.
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Post by wile on Apr 11, 2012 13:44:19 GMT -5
Then its your battery, your battery is toast.
Wile
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acm1
Junior Dawg
Posts: 6
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Post by acm1 on Apr 11, 2012 13:55:28 GMT -5
Shouldn't it turn over if I have a 10amp car charger on it since it's a direct connection of current?
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acm1
Junior Dawg
Posts: 6
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Post by acm1 on Apr 11, 2012 16:27:24 GMT -5
It will kick start no problem.
Anyways, I checked all the voltage to see if it was making it to the Motor, yup 12.4 volts measured at the motors connector.
So I've decided it had to be this motor, so I took it out and took it apart & the magnets were stuck to the armature & no longer glued the to can. I hope the starter is the culprit because I measured voltages everywhere & they're correct & checked all grounds.
I checked the battery with my multimeters built in load tester & it says it's fine.
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Post by nhajk0709 on Apr 12, 2012 20:03:24 GMT -5
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Post by ace420srh on Apr 13, 2012 8:32:13 GMT -5
Make sure you have a good ground from the motor to the frame and from the frame to the battery... This solved my starting issues...
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Post by mainepeace on Apr 14, 2012 14:46:24 GMT -5
The stock 4a battery that comes with most scooters is NOT powerful enough except when they are brand new. They will wear out quickly. A true 7a battery (and not just a -7 which is really 6a) will work much better.
12.4v with NO LOAD is not a good test. If you wire two 9v batteries together you can get more than 18v. Will they turn the starter motor? No. In order to properly test the battery you need to test it UNDER LOAD.
If you replace the starter motor and your current battery works find I will be VERY WRONG and I will eat my words. But generally I'm not.
Greg
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Post by mainepeace on Apr 14, 2012 14:49:41 GMT -5
nhajk0709, your starter motor gear looks nicked and worn. The bendix looks fine. It may need lubrication (dry lubricant or white silicone) to extend properly. The motor LOOKS fine but you can't tell from pictures. If you are not familiar with rebuilding motors, stop and just replace it. For $25 you can get a new one and save the aggravation and the potential electrical damage if you wire it wrong.
Greg
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Post by aussieredback on Apr 15, 2012 20:50:52 GMT -5
Hi everyone, Derek from Aussie, need your help, have a Yahama Jog 50cc not sure of age was given it but whilst I bought a new battery it will not start yep full petrol, turns over fine horn loud, lights ok BUT ugh, does it have a sparkplug if so where is it I cant find thanks and G'day
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Post by nhajk0709 on Apr 15, 2012 21:46:34 GMT -5
mainepeace, what do you mean rebuilding the motor, rewiring the coil inside? I check and its intact. I did a continuity check also and its all good. Brushes are in good shape. Anyway, so i did a load test on my battery. Its reading 12.4 V when key turn to on. Now when i turn on one of the blinker, volt reading is jumping from 12v to 11.9. Its pretty obvious my battery doesn't have enough juice to turn the starter. With that said I'm on a search now for a new battery. Any idea, what is good and affordable anywhere to get them. Your idea?
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Post by nhajk0709 on Apr 15, 2012 22:31:21 GMT -5
Hi everyone, Derek from Aussie, need your help, have a Yahama Jog 50cc not sure of age was given it but whilst I bought a new battery it will not start yep full petrol, turns over fine horn loud, lights ok BUT ugh, does it have a sparkplug if so where is it I cant find thanks and G'day Its usually located on the top right side of your engine, where the cylinder head is. |
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acm1
Junior Dawg
Posts: 6
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Post by acm1 on Apr 17, 2012 14:40:38 GMT -5
Okay my new starter motor came in & what do you know it works again! I'm so happy.  |
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Post by MEAN_MOTOFINO on Apr 17, 2012 16:01:41 GMT -5
Dont hold the start button if it doesnt want to turn over freely. That will just result in a starter burning up.
BTW when I got my 04 49.99cc , the first thing I did was take the starter apart and clean it , lube it and reassembled and it sounded 50x quieter than what it did before.
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