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Post by jialing on Sept 21, 2006 20:21:00 GMT
Youve tried almost everything now Jane. It sounds to me like one of the rectifiers have gone in your alternator. This is why you are not getting the output from it. It depends on how good you are with elecronics and if you can get the diodes otherwise known as rectifiers. You would then have to check each one after you desolder one end on each one one at a time to find out how many are blown. This has been caused by one of several things such as someone charging the battery without disconnecting the wires before charging. 2 someone tryig to jump start it and making wrong connections, which is highly likely, or a short on the bike itself. It might be cheaper in the long run to try to obtain a 2nd hand one but you wont know what its condition is like. If you want my advice for what its worth, pop into an auto electrician there are plenty of people that fit alternators to cars, tell him your problem and I guess he might say the same as what I have already said myself. I have had several alternators go but on cars not on mopeds. As regards fitting you might need a puller, am not sure maybe someone else on here can help you in this regard. I honestly think this is your problem. But please dont take my word for it. I hope the info is usefull to you anyway. regards alan
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Post by jialing on Sept 21, 2006 20:36:47 GMT
By the way most alternators put out AC current, in order to change it to DC, they use Diodes usually four to convert it to DC. A Magneto on the other hand puts out DC current and they use a regulator to control output. Your output voltages should be 13.8 if its 12 volt or 7.5 if its 6 volt.
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jane
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Post by jane on Sept 21, 2006 20:39:09 GMT
thanks for the advice Alan, sounds like quite a job,, when i first won the scoot i brought a new magneto as other one was in bits,isnt this another name for the alternator?set the timing and got it running, as i understand it the battery feeds into the rectifer that shares out wattage to certain parts.....? so if the rectifer is broke, then some parts of the scooter dont get the right amount of wattage, thus they dont work as they should.or: am i talking rubbish, i think i am, no i know i am, as i dont have any idea and am just guessing.cluching at straws, and so desperate to get my scoot on the road.
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jane
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Post by jane on Sept 21, 2006 20:43:14 GMT
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Post by jialing on Sept 21, 2006 22:40:01 GMT
in theory jane you have it 100% except the alternator feeds the regulator which feeds the battery and because of the diodes which allows the voltage to only go in one direction ie from the alternator to the battery, the battery is always in a state of charge. If the regulator is knackered then voltage and wattage cant go anywhere. until its sorted. If you have replaced the alternator you should be getting voltage out of it check that with meter. if 13 volts its your regulator check volts in volts coming out. hope thats not too confusing lol
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Post by jialing on Sept 22, 2006 13:18:57 GMT
In an attempt to make this more clearer If you have a wiring diagram of your bike you may see a symbol like this in it. you will notice that the part consists of four identical objects known as diodes. which appear like this. The object of a diode is to allow current to pass, but only in one direction, hence the arrow head. Diodes also serve another purpose, and that is to change A.C. current into DC current because of the battery which is DC. Rectifiers such as the one shown below can be purchased from places like Maplin for a few pounds say £3.00. They serve the same purpose as the one bike manufacturer's put out at a higher cost except after wiring them into the circuit you need to protect the bare connections in some way. They might make a special adapter that you could plug it into I have not checked into this. However all bare wires should be covered with insulation tape to be safe. With the high cost of parts these days, it only takes a little stretch of the imagination to realize that there are alternate ways of achieving your goals at a cheaper cost. I have tried to make the image of the manufactured diode smaller to no avail but I hope this helps. Two wires from your alternator are connected to this see your wiring diagram and the other two are the + and - outputs of DC. Make sure these are connected correctly to your Wiring loom.
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jane
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Post by jane on Sept 25, 2006 20:12:07 GMT
update: yesterday changed the 2 front forks,shock absorbers, took off the rectifier, so today, brought a rectifier from my local scooter garage, couldnt make out the name of it as it was all in chinese, but the one i brought (£20) has done the job(honda again), the headlight is now so bright anything will see me coming from miles away! a sheet of plastic has been used for the 2 orange lights at the front, the brake lever has been secured with another bolt, the back reflector has been changed for a red one, the back shock absorber has been changed. have booked it in for another MOT tomorrow, as they couldnt fit it in this afternoon, as my 10 days were up ! altered the hight of the beam this evening and noticed that the indercators wont work! can not believe my luck, seems to be one thing after another, got the charger out the shed, trying to find that was a job itself!, hooked it up and bingo, the indercators work. going to leave the battery charging over night, and when i go to the garage for the test at 12 i aint gonna use anything incase it flattens the battery! any suggestions on riding it down the street with any power? lol
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jane
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Post by jane on Sept 25, 2006 20:14:26 GMT
forgot to say but also checked the magneto, just in case, but that is fine, still intact and still set where it should be. thanks to all for the useful advice, will let you know how it goes, decided if guy fails it again then i shall appeal as everything he failed it on 2 weeks ago has been sorted.
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Post by jialing on Sept 25, 2006 22:27:16 GMT
well done Jane, you persevered, you listened, you improvised, you worked hard and you overcame everything that was thrown at you. Finally your off on that long awaited MOT test. If as you say the lights are as bright tomorrow as they are after fitting the rectifier and appear to get a little brighter as you rev up the engine. Everything should be working as it should be. I hope you manage to get a pass with your bike, you have put enough time and dedication into making it roadworthy, you of all people deserve to be issued with it. I wouldn't worry too much about using your lights, I think you have solved the problem and with a bit of luck you will be able to take the mot down to the P.O. tomorrow and get that very important little disc we all need to make us all legal. Best Wishes Jane, I hope you get your dream. And if the tester fails you tell him you intend to appeal and at the same time make your case known to not only watchdog but also inform all the members of the Chinese Scooter Club to boycott him in future. Might make him sit up and think about the consequencies of his actions if no one takes scoots to him in the future.
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jane
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Post by jane on Sept 26, 2006 20:00:47 GMT
yipeeeeeeeee! yes yes yes ! ok as you can guess she passed! guy told me he would have to check everything as it was 1 day pass the deadline for a retest... ok i said,but how come it took him less than 15 mins where as the first one took 40??!! charged me for a full one but i suspect he only tested the items on the fail notice. no matter at least i can now use it to potter about on. theres a few things that i would like to sort in the near future, namely derestricting, there is no pink wire to cut, and she doesnt go any faster than 25 mph, going uphills is out of the question.lol also want to get a new seat as mine has a small cut, and then i want to treat myself to a nice top box as the storage under the seat isnt big enough to put a cat in never mind a helmet! thanks once again to all the people that have made suggestions, advice and support. i now feel it was well worth waiting for. jane
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Post by px166bajaj on Sept 26, 2006 20:32:43 GMT
Hooray! Welcome to the ranks of two wheelers!
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Post by jialing on Sept 26, 2006 20:40:00 GMT
Well done Jane, congratulations see what a bit of determination can do. You beat the odds and you won. Now, you can play to your hearts content. Well done, I think were all proud of your achievement.
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jane
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Post by jane on Sept 27, 2006 17:04:32 GMT
well been to work today on my scoot, first time! but as its only a mile down the road i havent really tried her out. think on saturday i'll give her a blast and she how she preforms on the country roads as she seems to struggle going up hills, and hasnt done more than 25mph on a straight road, . i'm getting used to the difference in size and ride, my other scoot was an aprillia rally, big and powerful,lovely ride. also i''m having to kick start as the electric start is still not working, not in too much of a rush to get it sorted, but still would like to.
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Post by larry8 on Oct 3, 2006 23:39:31 GMT
I hope you got that scoot for near nothing with all the problems and money you had to throw at it.
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Post by px166bajaj on Oct 4, 2006 5:15:40 GMT
I've just missed a Taishan on ebay, I bid £50 the other bloke bid £51 Grr!
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jane
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Post by jane on Oct 4, 2006 6:26:13 GMT
well it cost a little more than £50, but now its on the road it all feels worth it.still getting used to the smallness of the bike, and speed restriction compared to my aprillia rally.
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Post by jialing on Oct 4, 2006 11:44:23 GMT
Re: new owner of a taishan z2 « Reply #50 on Today at 6:15am »
-------------------------------------------------------------------------------- I've just missed a Taishan on ebay, I bid £50 the other bloke bid £51 Grr!
Sorry to hear that Px but in an earlier post you did say you were a tight butt LOL you should of gone that extra quid or two roflmao
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