Monster to Hyperstrada

Mar 2013
2,339
4
Naples, IT
Losing the cam belts is cool but, if it has the same valve adjustment interval (18K), you're gonna have to crack the motor anyway.

Spot on about the motor's linear power delivery. It builds and runs out like a 4 cyl but sounds like a twin and has low range grunt. The biggest attraction about going with the 939/ 950 would be increased power, which they don't really have. So don't feel shorted buying an 821.
 
Jan 2019
60
0
Toronto
2014 also lacked the judder spring, which I just added, big improvement...the 821 vs. 939, both Duc twins, 821 is almost 1200 crank stroke with smaller bore, for a small engine, very good midrange, belt driven cams...939 is internal chain driven cams (no more belts to replace), shorter stroke/bigger bore, obviously little bigger engine, I'm sure people on this forum know more than I do about the deltas...I would consider the 939 lower maintenance...I do love my 821 though...
The 939 still has belt driven cams. As does the 950.
 
Jan 2019
60
0
Toronto
My other Ducati is a 998. I did notice the loss in raw torque, which is made up on the 821 HS by using extreme gearing (my 998 is 15/36 while the 821 HS is 15/45), so you need to be mindful about being in the right gear to avoid bogging. The flip side is that you get to wring out the motor and still be going at only moderately illegal speeds. My recommendation to you would be to ride one before making a decision. I'm happy because I have both, and this is the first touring-capable bike I've ever owned and has served me well. Just like my 998, I can't ever see myself selling this. It does so many things well the same way my 998 does only one thing well.