groghunter

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

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groghunter ollyforster's article
Feb 9, 2016 at 19:07
21 hours
Core Bike Trade Show 2016 - Randoms
"Following the development of the derailleur, the next step in the development of XX1 was figuring out an acceptable gear range. Early 10-speed prototypes had a 9-36 tooth range. Testing proved that a 9 tooth cog was too small to be pedalled comfortably. Such a small cog caused a shuddering sensation when pedalled under load. This is due to a phenomenon known as the “polygon effect,” which results from variations in speed as the chain transitions from one cog to the next. “The smaller you get, the bigger the polygon effect,” said Henrik Braedt, a design engineer who worked on the development of the XX1 cassette. This effect exponentially decreases relative to the number of teeth on a cog. The addition of one tooth, along with carful machining of the tooth profile mitigated the polygon effect." Think he's an arm chair bike rider?
groghunter paulaston's article
Feb 5, 2016 at 13:26
Feb 5, 2016
Check Out - February
So now it's $300 so that Vaude can get a plug? Also, why does that "Specially formulated" Renthal glue come in exactly the same bottle as RC tire glue?
groghunter ollyforster's article
Feb 4, 2016 at 14:08
Feb 4, 2016
Core Bike Trade Show 2016 - Randoms
Nope, SRAM offers the XD driver license freely, as they're trying to drive adoption towards it, not away: http://www.xddriverbody.com/ edit: I just saw you meant the cassette part, but the question then becomes whether e*thirteen is paying I guess.
groghunter ollyforster's article
Feb 4, 2016 at 13:32
Feb 4, 2016
Core Bike Trade Show 2016 - Randoms
Well, they could have gone with the prototype that integrated the cassette & driver into one piece, so yay I guess?
groghunter ollyforster's article
Feb 4, 2016 at 9:29
Feb 4, 2016
Core Bike Trade Show 2016 - Randoms
No, Hope only body, basically a shortened standard freehub body, though the threading might be different(since the 10t is actually "floating" off the end of the body.) So even less hub options than SRAM, though I expect less people to complain, since it's Hope. I honestly don't see the point to this now. it was a great idea 5+ years ago when they first started showing prototypes, but at this point, with both 11 & 10 speed cassettes available for XD drivers, it's only going to sell to people who want it because it's made by Hope, or if they manage to price it cheaper than some of the other options on the market.
groghunter ollyforster's article
Feb 4, 2016 at 9:21
Feb 4, 2016
Core Bike Trade Show 2016 - Randoms
Whoever downvoted you is dumb; SRAM even said they tested 9t when developing XX1, & that it caused problems. Polygon effect & chain wrap issues are real things folks.
groghunter ollyforster's article
Feb 2, 2016 at 7:36
Feb 2, 2016
DVO Sapphire Forks and Topaz Air Shock - Core Bike 2016
Truth. been examples of this for years. 32mm stanchions get a bad rap because in FOX's implementation, they're flexy(but light, which is what FOX was optimizing for,) but RS has been quietly making Revelations for years, which people don't complain about at all. Both DT Swiss & Magura only offer 32mm stanchions. Don't ask what size stanchions are. Ask "is the fork flexy, or not, for a rider at my weight & riding style?"
groghunter pinkbikeaudience's article
Jan 27, 2016 at 7:08
Jan 27, 2016
Ask Pinkbike: Best BCBR Bike, Switching to a Longer Travel Fork, and Front Tire Suggestions
It's funny how many different theorys there are for what the "F" & "R" stand for... I'd always heard if was for "Flat" & "Ramped," & since I live someplace fairly dry, I accordingly ran the DHR as a front & a HR in the rear (back before either had a "II.") Nowadays I'm running a different tire every change, trying to find my new favorite(I'm also not running only dual-ply wirebeads anymore, so there's a lot more choices.)
groghunter skylerd's article
Jan 15, 2016 at 12:20
Jan 15, 2016
Bikepacking Down and Out and Up in Arizona
Good to hear, I didn't make it that far (west? north?) on the single trip I've been, we basically camped at White Spar & just rode from there up towards the trails around the Whiskey course.
groghunter paulaston's article
Jan 15, 2016 at 10:27
Jan 15, 2016
Alpinestars Alps 2 Knee Pads - Review
I love my Dianese. Fit is tricky though, try to test fit first, or be prepared to buy multiple sizes & send back or sell the ones that don't fit. I ended up with a size larger than their size chart, but as they've stretched, I'm running out of velcro to keep them in position. Mediums seemed a bit too tight though, like they would rub on my knees too much on long rides. Part of the problem may be that I'm right between sizes when measuring my leg, though.
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