what will a broken ignition advance cause?

[zacheriaj]

on a 1982 gs550m, will a broken mechanical advance cause the bike to idle roughly and not throttle up?

[Nessism]

What do you mean by "broken"? The advance mechanism is very robust unless you crashed the bike and hit the rotor.

[zacheriaj]

What do you mean by "broken"? The advance mechanism is very robust unless you crashed the bike and hit the rotor.

at first it was spring loaded and now it spins freely

[earlfor]

on a 1982 gs550m, will a broken mechanical advance cause the bike to idle roughly and not throttle up?

Yes, maximum advance is 32 deg BTDC and advance at idle is about 10 deg (if I remember correctly), so the bike should barely run at all with an inoperative advance unit.

Earl

[zacheriaj]

Yes, maximum advance is 32 deg BTDC and advance at idle is about 10 deg (if I remember correctly), so the bike should barely run at all with an inoperative advance unit.

Earl

Great! I was hoping thats all it was. not the ignitor box again! Ive got an advance on the way from ebay. One off of a 1981 GS550L should work fine on mine shouldnt it?

[earlfor]

at first it was spring loaded and now it spins freely

It sounds like you have either broken springs, not hooked up springs, or you have installed the advance unit without it being correctly set into the splines.

Earl

[Nessism]

I agree with Earl, most likely something wrong with the springs. Pull off the advance and see what's wrong. Chances are you will be up and running pretty quickly.

[zacheriaj]

I agree with Earl, most likely something wrong with the springs. Pull off the advance and see what's wrong. Chances are you will be up and running pretty quickly.

Theres a little metal thing that broke off of the shaft i believe. It just spins on the shaft. Doesnt open the springs and it doesnt get locked in.

[blowerbike]

pictures of your broken parts would kick a$$!!

[Nessism]

The rotor has notches that need to fit down over some tabs on the advance weights. If you lift up on the rotor and pull it out of the tabs, the springs on the weights move the weights inward and make it difficult to get the rotor back down. It's hard to describe but easy to figure out once you see it.

[Guest]

Got a digital camera? I've never seen a broken mechanical advance. Make my life complete.

[zacheriaj]

Got a digital camera? I've never seen a broken mechanical advance. Make my life complete.

will try to get pics tommorow

[blowerbike]

pictures of your broken parts would kick a$$!!

is there an echo in here?

[zacheriaj]

heres a pic and a video.

http://www.youtube.com/watch?v=v-ZxmQzb5Tg

The video will be processing for a few more minutes but check back peridoically

[Nessism]

Looks like the rotor has broken loose. Can you pull it off the top?