solved: grinding sound from rectifier

[U_W v2.0]

new here, first time post and in need of some help

i have a huoniao HN125-8 125cc motorcylce and i removed the left and right switches to install replacement switches as my headlamp main beam wasnt working but dip and possition lights where, even with a new bulb. so i thought new switches might aid in fixing that problem.

thing is, now that i've installed the new switches, my rectifier sounds like its chewing on metal with cast iron jaws!

i thought "ah bugger" so i swapped them out and stuck the old ones back on.

same thing, and to boot, this happens on the electric start, dont want to try the kick start but will if needs be. when using the electric start, all the electrics cut out for a while, presumable while the rectifier....rectifies itself after what ever is going on.

the battery has been charged and is putting out a steady 12.48v DC.

so um.....anyone have any ideas? haha.

i can post a pic of the wiring inside the headlamp (cause of the switch replacements) and a wiring schematic if it would help .

thanks in advance everyone.

[Pete.]

I never heard of a rectifier making a noise - but if I did it would be off the bike in a flash before it went up in smoke.

Are you sure it's the rectifier, not the starter solenoid?
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Usher4566]

Are they correct switches ? Have they been wired correct .I never thought a reg//rec could make noise
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New cd200 benly owner

[Usher4566]

I agree pete whip it off .and yea starter solinoid can make some noise
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New cd200 benly owner

[U_W v2.0]

its definatly the rectifier.

i jsut went out and checked, looking AT the rectifier at the time and the sound defo came from that and it moved like 1mm when it clicked and killed the electrics.

they're the correct switches.

only wire i wasnt sure about is a LIGHT BLUE wire for the fromt right indicator, otherwise all wired up correctly as the connectors they use will only go into the one its meant for.

[Pete.]

Rectifiers don't click.

Let's get this straight - you push the button to start the engine and you get a click or a metallic chattering? Is so, that's the starter solenoid jumping in and out.

Check the battery terminals are tight. Make sure you don't have a small ring clamped under the main battery lead on either terminal, if they have more than one connection. Find the frame earth on the battery neutral wire and check it's tight. Do the same for the engine earth. Check the red leads onto the starter is tight.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[U_W v2.0]

heres a photo of the area

https://i48.tinypic.com/4hqdfk.jpg

its the bit with the 2 red wires on it that jumped and is making the noise. which according to my wiring diagram is the rectifier. although i may have miss read it because according to the diagram theres a bunch of other bits too lol

the fuse is fine btw.

i checked the battery terminals and they look fine too. also the battery ground goes directly to the engine block and thats nice and solid as well.

incase it helps, heres the wiring diagram. it seems pretty accurate for what i've observed so far

thanks for all the help so far too

p.s after google imaging "motorcycle starter selenoid, your completely correct lol.
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[Usher4566]

That's the starter solinoid
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New cd200 benly owner

[U_W v2.0]

any reason why it sounds like chewing out something horrible?
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[U_W v2.0]

never mind, loose connection.

fee like a total prat now. still im new to all this, utter noob mistake i spose, still VERY embarrased thugh
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[Usher4566]

Pete may no why its clicking but maybe you should bump start or kick .they ushally click when stuck ? Pete ? Or battery flat.when I was youger I used to ark a screw driver across to get um going agen Pete ?
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New cd200 benly owner

[Usher4566]

Have you fixed ? If so never mind because you are learning you now no what a starter solinoid looks like .reg/ rec usually have fins
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New cd200 benly owner

[U_W v2.0]

yeah just had it running for a minute or two (need to adjust the idle mixture screw, doesnt like to start up properly at the moment) but had it running and no noise at all.

still, i spose gotta laugh at it lol

thanks guys! im sure i'll be back to try and fix the headlamp problem.

actually, i'll start up a new thread about that.
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[Usher4566]

Be carefull if you start messing with mixture screws only one to fiddle with is idle screw.not air or oil mixture screws
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New cd200 benly owner

[Pete.]

[Usher4566]

Also at some point could you put pic of bike up am curious what one of them lookslike
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New cd200 benly owner

[U_W v2.0]

https://i813.photobucket.com/albums/zz55/reeve1987/Hyrinmaru.jpg

viola

my first motorcycle

im in the process of changing the black (including the seat) to white.

hoping this will make me more visible for night riding.

also added LED strip lights for being more visible at night and added a dimmer to them if i need to make them brighter/dimmer

https://www.youtube.com/watch?v=vr-KdsDJXSk&feature=plcp
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[Pete.]

[U_W v2.0]

i dont know what the blue oyster club is lol

i intend on keeping it nice and clean, getting some custom made vinyl stickers for the tank to add a little colour, but not alot, they're black stencil type ones as i want to keep it simple
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[cb1rocket]

i would leave the bike as it is, you will only make it worth less in value.

Unless its a proper airbrush chopper style graphics that cost ££££££

[Pete.]

[U_W v2.0]

oh, that blue oyster bar lol.

meh doesnt bother me much haha.
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[karthead]

[U_W v2.0]

so not even going to ask about that lol.

its funny, i've been fixing problem after problem with this bike. only paid £200 for it though so cant complain.

had to tighten the gear change lever bolt, scrub off the indicator contacts, got the headlamp issue then this, idle speed was too high.

wonder what else this bike has in store for me haha

loving it all the way though!
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[Usher4566]

There is one of them for sale near me for 150 make good spares
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New cd200 benly owner