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EXTremist · 07-30-2007, 11:59 AM

Hi Guys,

I posted this in racer's area too but thought you guys might be able to shed some light on this phenomonon I experienced this weekend.

I had the opportunity to put about 15 laps on at a local 1/2 mile oval this weekend as part of a charity ride. I rode the track mostly in 3rd gear going down to second occassionaly when I needed to slow down for traffic.

The corners were high banked but the apex's fairly flat. I ride a stock 2007 R6s.

Several times under hard braking (from ~70 MPH down to ~40 MPH) I would get the sensation and noise that the bike was severely chattering (felt almost like the fornt end was bouncing slightly) it was scary and dangerous feeling. I would let off the brakes slightly and pull in the clutch to get it to stop. Once or twice I slightly skidded the back tire. I just don't know what to make of this...the bars felt tlike they were jumping a bit in my hands and it seemed like it would escalate until I let off and pulled in the clutch.

What was I doing wrong, or what could this have been? Any ideas?

Thanks!

07-30-2007, 11:59 AM	#1 (permalink)
EXTremist Back Marker Join Date: Sep 2005 Location: Hopkins, MN Age: 40 Posts: 41 Casino Cash: $964 Sportbike: 2007 Yamaha R6s	Severe "chattering" under hard braking? Hi Guys, I posted this in racer's area too but thought you guys might be able to shed some light on this phenomonon I experienced this weekend. I had the opportunity to put about 15 laps on at a local 1/2 mile oval this weekend as part of a charity ride. I rode the track mostly in 3rd gear going down to second occassionaly when I needed to slow down for traffic. The corners were high banked but the apex's fairly flat. I ride a stock 2007 R6s. Several times under hard braking (from ~70 MPH down to ~40 MPH) I would get the sensation and noise that the bike was severely chattering (felt almost like the fornt end was bouncing slightly) it was scary and dangerous feeling. I would let off the brakes slightly and pull in the clutch to get it to stop. Once or twice I slightly skidded the back tire. I just don't know what to make of this...the bars felt tlike they were jumping a bit in my hands and it seemed like it would escalate until I let off and pulled in the clutch. What was I doing wrong, or what could this have been? Any ideas? Thanks!