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Out of the Garage and in to the Garden
Terms and Names:
Offset-(Blue Line) measured form the center of the steerer tube to the center of the drop out.
Head angle- the angle of the head tube in relation to a vertical line.
Trail-(Green Line) the distance defined by the vertical line from axle to ground and the intersection of centerline of the head tube and ground. What they did is increase the fork offset to 51mm from a normal 34mm and slackened the head tube angle from a normal 71.5 deg to 69.7 deg. When Fisher first made his 29ers he was using a normal head tube angle and a normal offset fork, 26" geometry if you will. When this geometry is paired with a taller wheel the trail increases. A bike with too large of a trail figure will ride nice at high speed but will feel sluggish and unwilling to change direction at slow speeds. The opposite will happen on a bike with no or very little trail, the bike will be very maneuverable at slow speeds and have a potentially very violent speed shimmy at high speeds. So as the industry went along with the whole "29er scene" they all adopted the same 26" geometry. Fisher then developed the G2 geometry which increases offset and reduces trail making the new 29ers have a more 26" feel but still retain the benefits of the 29" wheel. Currently Gary Fisher is the only company using this geometry on their bikes and in my opinion this makes them the best choice when buying a 29er.
On the Bike
I rode her to work the following day. The first thing I noticed was the bottom bracket is way stiffer and the speed shimmy that I did get on my older frame was gone indicating that the top and down tube have stiffened up. Another noticeable difference was the lower bar height which was 9mm lower than my old set up. This came as a surprise to me as the head tube is 12.5mm taller than the old frame. My only gripe about the on pavement performance was that it is a little harder to steer my wheelies.
I got her on the dirt on Saturday (lots of rain lately) and the bike preformed very well. Corners were noticeably easier to make and the bike responded better to small body inputs. The front end though heavier on paper felt nice and light and very flickable on the dirt. Descending was noticeably more stable and the rear end felt less wishy washy. When climbing in the saddle the bike tracked better and the front end stayed planted. When climbing out of the saddle the front end felt very weird, almost twitchy, but not bad, just unfamiliar. The trail was pretty slick in spots (Maze Ville) and the bike handled the slippery mud better than the old one. After one lap I made a few more adjustments to the fork and went out for another lap which was slightly faster than the first. Over all I really like the new bike, the G2 geometry surpassed my expectations and I can’t wait to get dialed in on the bike.
The Fox fork is nice but limited in its range of adjustments and it will eventually be swapped out for the new Reba team 29er.
Sections that have seen change are;
The Rock Tunnel: the exit of the tunnel was moved out of the ravine and on to the old DH trail.
The Shale Pit: The Famous Tunnel and Ramp over the Tunnel are now gone. The trail goes around the tunnel and connects to The Billy Goat Trail and instead of going down the ramp the trail doubles back along the corn field and dumps you out on Dicks Express Way.
Fern Gully: The trail makes the switch back after OH SH_T and heads straight down to the cradle (no uphill any more) and offers a line to the north of the cradle that is easier or a line back up to the cradle that is not really that fun....
Friar Brian`s Forrest: Half way through the section the trail heads west and then south eventually linking up to the Zig Zag trail with is now ridden in reverse. The trail joins back on the original section before the straight away before the Gold Fish Hole.
The Bowl: The section before the bowl has been rerouted and a rock garden has been added. The trail then crosses the road and jumps in to the bowl.
Maze Ville: Right after the Vulture Gate Bridge the trail heads north and loops around in some super tricky single track, think lumpy ground, tight corners and lots of rhythm required. The trail is spliced in to the old Maze Ville and joins the old trail right before Candys Ridge.
The Tee Pee: The Tee Pee is still there but the old straight downhill is gone, I hope you like turning.
Everything else after the last "mud hole by the big tree" is different. There is LOTS of new trail that is challenging mixed in with the old trail and would be way to confusing to explain. The trail finishes like it always does.. over Allan Falls, 180 switch back, long straight away, right turn, uphill straight, over the mulch pile and up and over the finishing jump.