The lightweight 650B (27.5 x 2.25) Rocket Ron gets a major facelift this year, in what they like to call ‘The Next Generation’ version. They have reduced the rolling resistance by 15% due to redesigned center knobs, added stronger side knobs for less squirm, and all the knobs get three micro V-grooves each, for increased grip, control and wet adhesion, while retaining good strength. In addition, the tread pattern has been subtlety tweaked, and the knob height has been decreased. The sidewalls are lightly textured, thicker and have a uniform surface for increased toughness of their 127tip casing, and to assist with tubeless ready mounting.
Strengths: Light, high volume for a 2.25, generous knobs. Ok traction.
Weaknesses: Extremely thin and porous sidewalls. Impossible to set up tubeless without losing all air pressure overnight. rolling resistance.
This is for a pair of RR Evo triple compound (Pacestar) tubeless ready tires (2.25). I got them on sale at around $40 each.
I set this up for my 650b Voodoo on Stan's 355 rims and valves. First off, they were decently ok to mount tubeless and the beads seated after some effort. (still needed some elbow grease with the floor pump or a compressor, but not impossible). The problem, however, were the extremely thin sidewalls that leaked stan's sealant from everywhere. Did the shaking, setting down, and all the tricks. They hardly held any air after an hour. After two weeks of daily pumping, shaking, sealing, adding stans from time to time, they would hold air for a few hours, but they would be completely flat the next morning, right when you're about to ride. There were several times that I had to re-inflate several times during a ride.
After a month - I used tubes and they are ok, so far.
In other news, traction was ok, rolling resistance was normal for a relatively knobby tire. But, they were quite light and it showed on the climbs. But the weak, thin sidewalls didnt inspire confidence in anything with rocks.
Overall: if you want to run these tubeless, or if you intend to blast through rock gardens or anything that conceivably threatens sidewalls - dont bother.
If you plan to use tubes and ride smooth, sharp rock-free terrain, they are a good lightweight alternative.
I'm 150 lbs, and am an aggressive XC rider (some AM, but no down hill tendencies).
I recently lightened up my wheelset. Went from ZTR Arch w/ moderately beefy bontrager tire (don't recall specific one), to ZTR Gold with Scwhalbe Rocket Rons. REALLY ENJOYING the weight savings on the ascents, b ... Read More »
[URL=http://s546.photobucket.com/user/GaryCogis/media/RocketRon_zps18e95f46.jpg.html][IMG]http://i546.photobucket.com/albums/hh422/GaryCogis/RocketRon_zps18e95f46.jpg[/IMG][/URL]Read More »
Has anyone tried the 2013 edition of the Rocket Ron in 2.25? Can you compare it to 2012 (older one). I like the volume and tread pattern on mid and transition knobs, but I always felt the outmost - side knobs are weak and squirmy. Apparently in marketing material Schwalbe said "added stro ... Read More »
So I just installed a rocket ron tubeless on a arch ex rim, was super tough to get on rim, sealed up fine with floor pump, did the stans shake, next day I noticed that the tire was flat, stans fluid on the wall!! Also noticed a deformity in the bead. Anyone ever have this happen, did it blow off the ... Read More »