|I feel your pain, as I just ran through that problem with a different rim and tire combination. I ran out of my favorite tapered valve stems and had to use the type with a rubber block vulcanized to the end that often leak. I believe that your problem could be solved by using Stan's valve stems. They have a tapered rubber stopper that wedges into just about any valve hole to form a seal. Some rims, however, have a very tight fitting valve hole, which doesn't allow the tapered plug to seat well on the inside of the rim. In such cases, the next best option (beyond using a tapered Dremel grinder to open the inside hole slightly) is the American Classic valve stem, which uses a thick O-ring that conforms to the inside of the rim and makes a flat seal. Assess your situation and make the call.|
I researched Specialized's Roval rim profiles and they seem to be drilled on center, so this next suggestion may not apply to you. Asymmetric rims (ones that have offset spoke holes to help eliminate dish) often are drilled so that the valve hole is also off-center. In such cases, the rubber plug of a tubeless valve stem has a hard time sealing the off-angle surface. In such cases, if the valve hole is a tight fit on the inside of the rim, it makes the situation worse, so enlarging the hole very slightly will allow a tapered plug (like the Stan's model) to wiggle in and make a good seal. The last ditch valve stem is Stan's "Problem Solver" which has both a taper and a "hat" shape designed into the plug, so it can seal a wide area, or an oversize hole.
Finally, I agree with your choice of using a high-quality gaffer tape to seal the rims. Most of us at PB use Gorilla brand tape because its adhesive is the strongest we've found. Be sure that the width of the tape extends just beyond the width of the inside of the rim, so that the tire bead seats on the edge of the tape. - RC
|By and large, overbuilt hardtails have been relegated to the history books, but that doesn't mean that you can't accomplish the same riding feats on a modern hardtail. Frame and component technology has greatly improved in the ten years since bikes like the Norco Sasquatch, Cove Stiffee, and Banshee Morphine had their heyday, and there's no longer a need to head off into the woods on a 40 pound hunk of aluminum and rubber. As an added bonus, the lighter weight of modern hardtails makes it possible to <gasp> ride uphill as well - no more trudging up fireroads as the XC crowd spins on by. Smaller companies like Chromag, Cotic, Stanton, and Ragley, just to name a few, have built their reputations on producing high quality hardtails, and although full-suspension bikes have become more and more affordable, the hardtail doesn't show any signs of going extinct. |
There are also more wheelsize options than before, and where 10 years ago 29ers suffered from awkward handling due to their old-school geometry, the bigger wheelsize is now a viable option, with bikes like the Kona Honzo or Transition TransAm able to easily take on technical terrain. The 27.5+ wheelsize is also starting to gain momentum, and while I'm still not sold on the fatter tires for full suspension bikes, I do think it has potential for hardtails, where it can soften harsh landings and mute chattery sections of trail. The takeaway from all of this? The freeride hardtail may be dead, but it's been replaced by a wide range of options that will all deliver loads of fun out on the trails. - Mike Kazimer
|I've not had any experience with the POC vest but I have been using a Bliss ARG vest for the last few months and an EVOC Stage 12L pack.|
The minimalist Bliss Armourgel spine pad is well ventilated thanks to the perforations and the vest is comfortable and cool on long rides, it also has pockets to fit 2 x 250ml Hyrdapak Softflask's which are supplied (although these have a habit of trying to escape when full) and two more pockets for stashing gels or tubes - I wouldn't like to put anything like a multi-tool in here as the pockets are located within striking distance of your kidneys.
The Stage 12L pack is a great choice and is slightly more breathable than the vest thanks to the Airflow Contact System, but this is offset against the bulk of a bag. The Stage has plenty of pockets for spares and space for a hydration pack. Personally I like the Bliss vest for shorter rides and shuttle/lift days, and the EVOC pack for longer rides, I always leave this bag packed with tube, tools, bars and some cash so I know I can just grab it and get on the trail. - Paul Aston
Cool FeaturesSubmit a Story to Pinkbike
RSSPinkbike RSS Feed