gnyce
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- Joined
- Nov 29, 2015
- Messages
- 334
- Reaction score
- 191
- Points
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- Location
- north of Philadelphia PA, US
Asking for any assistance that can be rendered, as I'm currently striking out. This project (being going on for a bit, I know), a 1990 Yamaha FZR600, has been back on the road and doing well - or so I thought. On a rather uneventful ride - an errand, really, on my birthday - about a mile from home, some God-awful noises started and bike just died.
Long story short, the pressure plate (clutch basket) just disintegrated. No idea why. Dont' believe there was any crazy preceding event. See results below. (bad on left, good on right)
This was pretty discouraging, as I thought all issues on the bike had been ironed out. So I determine what needs replacing (I have some spare parts from an extra non-running engine), dropped the oil pan to pick out the metal bits, etc - I have it running again. But there is a pretty loud clatter that is new. My assumption is that this was some caused-effect from the birthday incident, but I've been unable to track it down. I did find the main cog in the starter clutch had some bad/uneven teeth, and so I replaced that. No change.
New clutch plates/springs, different steel plates, swapped clutch baskets, changed needle bearing.... no difference. Starting to wonder if this is indeed a clutch/starter-clutch issue, but it seems most noisy there.
Video below. Open to suggestions, as right now I'm casting about. Here is what it sounds like (below). I'm able to shift, clutch seems to work (bike is on stands), I've gone through 1st/2nd/3rd gear with no issue.
Bike startup
Long story short, the pressure plate (clutch basket) just disintegrated. No idea why. Dont' believe there was any crazy preceding event. See results below. (bad on left, good on right)
This was pretty discouraging, as I thought all issues on the bike had been ironed out. So I determine what needs replacing (I have some spare parts from an extra non-running engine), dropped the oil pan to pick out the metal bits, etc - I have it running again. But there is a pretty loud clatter that is new. My assumption is that this was some caused-effect from the birthday incident, but I've been unable to track it down. I did find the main cog in the starter clutch had some bad/uneven teeth, and so I replaced that. No change.
New clutch plates/springs, different steel plates, swapped clutch baskets, changed needle bearing.... no difference. Starting to wonder if this is indeed a clutch/starter-clutch issue, but it seems most noisy there.
Video below. Open to suggestions, as right now I'm casting about. Here is what it sounds like (below). I'm able to shift, clutch seems to work (bike is on stands), I've gone through 1st/2nd/3rd gear with no issue.
Bike startup