I bought my 06 Heritage new in June of 06 and the clutch shudder was bad enough you could see the front of the engine jump up and down about 3/4 inch when starting out on a slight uphill grade.
I was ready to have a new clutch installed, but I went to the GT Rally in Dearborn in August before doing so. LUCKY ME!!
At the rally I was able to talk to Glenn Miller who was the drive train engineer on the car. He knew instantly what was causing it. All cars are supposed to go thru what is called the "Clutch bedding procedure" while on the dyno at the final assembly plant. Perhaps the guy who normally does this process was sick that day or was on vacation and the procedure was not done correctly.
Glenn told me how to do the procedure and said it would solve the problem.
I came home, did the procedure, and it solved the problem imediately.
PROCEDURE:
1. On a level road with the car stopped and in first gear, (Be sure it is first gear not third) increase the RPM to 3000.
2. Slowly release the clutch so it will slip for 3-4 seconds, be sure to hold the RPM at 3000 while it is slipping. Do not let the RPM go below 1700.
3. Press clutch pedal to the floor and hold the RPM at 3000 for at least 10 seconds, this is the cool down period. I actually drove the car for about 1 minute in first gear after each cool down period, then repeated the procedure.
4. Repeat the above for 3 complete cycles.
Yes, you may smell or see a little smoke from the clutch.
DJ