I agree with Gina, I think it more who you rode with than anything else. Even when I ride my 64 BMW R50 my friends don't leave me behind. Even if they take off for a min or 2 they slow again so I can catch back up. To leave you behind and only wait at fuel ups is unkind and inconsiderate. My R50 is very slow in comparison to everyone I ride with and they don't leave me and we all have a great time. I have no problem keeping up on my SM though either and I tend to cruise about 80 MPH on it.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!