groghunter

Tucson Off Road Cyclists & Activists Board Member. www.torca.org

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groghunter mattwragg's article
Feb 23, 2017 at 12:30
7 mins
Point: E-Bikes Are Good for the Sport
@b45her: Yes, lots of people don't follow those rules. Part of the problem is a lot of our trails are multi-use, so if we were banned, you'd have hikers & equestrians narcing on us. & enforcement on some of the trails that started out as allowing MTBs but are now closed is much more stringent that what you're experiencing, The Marin county area being an especially good example. Heck, a trail system just got closed to bikes last year because somebody showed up to a council meeting with a strava printout showing MTB riders were going "too fast." But ultimately, part of my investment comes from the fact that I'm on the board of a local non-profit, fighting for more bike access, & I really don't want to see the progress we've made rolled back because somebody found a willing govt official to declare that "we can't enforce the ban on e-bikes because we can't tell the difference between them & regular bikes, so all bikes are banned."
groghunter mattwragg's article
Feb 23, 2017 at 8:50
4 hours
Point: E-Bikes Are Good for the Sport
In answer to your first question, at least in the US, it functionally can't be. Trail access is so tenuous, that we can't risk someone using the existence of e-bikes as justification to ban all bikes. At the end of the day, I'm really not that concerned with how somebody else has fun, as long as it doesn't destroy trails I care about, & e-bikes fit within that. But I can't advocate for them in the US with how many enemies MTB trail access has.
groghunter RichardCunningham's article
Feb 22, 2017 at 7:15
1 days
Shimano Announces Affordable Deore M6000 Group and a Wide Range SLX Option
What happened to your gravity groups shimano? Surely some of the improvements in m9000 could benefit Saint, & ZEE? Especially since most of us were happy to trade a little more weight for increased durability on AM bikes? If you wanna split off DH racing & keep it 10 speed, I won't argue, but there's for sure a market for burlier 11 speed components, get to it.
groghunter RichardCunningham's article
Feb 22, 2017 at 6:39
1 days
Shimano Announces Affordable Deore M6000 Group and a Wide Range SLX Option
Which feels like the world has gone crazy, if you were a rider in the late 90s/early 00s. Half the reason SRAM got so big was people like me buying SRAM because Shimano was so ridiculously expensive. Especially with how fragile derailleurs were in those days, replacement was common & you needed a reasonably priced option.
groghunter RichardCunningham's article
Feb 22, 2017 at 6:32
1 days
Shimano Announces Affordable Deore M6000 Group and a Wide Range SLX Option
@DARKSTAR63: To add to that, knowing your market, & where profit margins are to be found: Here in Tucson, for instance, not selling road bikes is a death knell, but really, the bike shops that seem to do best everywhere I've been, are the ones that treat the high-end road & MTB as halo product, but make their bread & butter profits on $300-$500 hybrids & entry level bikes. I get that it's not glamorous to sell hybrids, but they seem to sell in quantities that make MTBs & road bikes pale in comparison.
groghunter AJBarlas's article
Feb 20, 2017 at 12:13
Feb 20, 2017
Randoms - Frostbike 2017
The freerider pros are not heavy, & the sole is a harder rubber than the MI6 stuff (S1 is the same rubber that was in their older shoes)that was disintegrating, & the toe is fully sewn. So far, they are my favorite 5.10 since the original impacts from 2005. You can hate all you want, but these are the shoes where they listened to people, & fixed a lot of the problems with the newer impacts & the VXi series.
groghunter VorsprungSuspension's article
Feb 16, 2017 at 9:00
Feb 16, 2017
The Tuesday Tune Ep 14: Myth Busting
@jcklondon: Interested to hear what they say as well, but I believe the air contamination problem is really only an issue with sealed dampers: open bath & emulsion dampers should be able to offgas via the same oil/air interface that they ingest gas. Also, since they were designed to have air & oil co-mingling, they're built to tolerate air/mix in the damping circuits, to a certain extent, & the oil used in these type of dampers have additives to keep foaming to a minimum. As for why some shocks feel crappy until they get a few cycles, I'd put that down 90% of the time to friction. seals swell at rest, lubricated surfaces dry up, & interfaces at rest adhere to each other. you've got to break that friction & get the lube oil coating the surfaces again when a damper has been sitting for a while. If a sealed damper is legitimately not functioning until cycled, it's got air bubbles or broken parts inside, & needs service.
groghunter VorsprungSuspension's article
Feb 15, 2017 at 8:45
Feb 15, 2017
The Tuesday Tune Ep 14: Myth Busting
as I understand it foam is a concern unique to emulsion & open bath dampers, in that it is a product of oil/air mixture. most modern dampers are sealed, in that there is no interface between oil/air to allow foaming.
groghunter VorsprungSuspension's article
Feb 15, 2017 at 8:40
Feb 15, 2017
The Tuesday Tune Ep 14: Myth Busting
@WaterBear: IFP pressure doesn't affect damping unless it's too low to prevent cavitation(in that, gaseous oil has a different damping coefficient than liquid oil.) What if affects is spring rate. it's essentially another air spring you have to compress. & yes, the IFP(or bladder) is essentially the only mechanism for dealing with the shaft displacement. that's actually their main purpose. There are a bunch of other ways to deal with that displacement(some kinda rare & very funky, never saw them before I started reading the motorcycle suspension bible.)
groghunter VorsprungSuspension's article
Feb 15, 2017 at 8:12
Feb 15, 2017
The Tuesday Tune Ep 14: Myth Busting
@DMal: Yup, at the cost of a lockout when you crank the knob. Which may be more important to you (120mm) than it was for me(160mm.) When you lighten the shim stack, oil will flow past the HSC shims when the LSC is closed, it does not as configured stock.
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