2019 build details.  Light where it can be, heavy where it matters.

Frame: Bird Aeris AM9, size Large
Shock: EXT Arma
Fork: MRP Ribbon Coil
Wheels
 - Hubs: Extralite Hyperboost
 - Rims: Race Face ARC Carbon 36
 - Spokes: Berd Polylight
 - Tires: F: Kenda Hellkat ATC 2.6", R: Kenda Nevegal2 ATC 2.6"
Brakes: Magura MT7, 203 mm
Drivetrain
 - Cranks: e*thirteen TRS Plus
 - Chainring: e*thirteen SL Guidering, 28T, spaced non-Boost
 - Cassette: e*thirteen TRS Race 11sp 9-46
 - Chain: Box One 11sp
 - Shifter: Box One
 - Derailleur: Box One
Seatpost: BikeYoke Revive. 185 mm
Bar: Answer ProTaper Carbon, 810 mm, 25 mm rise
Stem: Answer AME 40 mm
Headset: Cane Creek 40
Pedals: Look X-Track En-Rage
Grips: ODI Elite Pro or Oury push-on
Saddle: Velo
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2019 build details. Light where it can be, heavy where it matters. Frame: Bird Aeris AM9, size Large Shock: EXT Arma Fork: MRP Ribbon Coil Wheels - Hubs: Extralite Hyperboost - Rims: Race Face ARC Carbon 36 - Spokes: Berd Polylight - Tires: F: Kenda Hellkat ATC 2.6", R: Kenda Nevegal2 ATC 2.6" Brakes: Magura MT7, 203 mm Drivetrain - Cranks: e*thirteen TRS Plus - Chainring: e*thirteen SL Guidering, 28T, spaced non-Boost - Cassette: e*thirteen TRS Race 11sp 9-46 - Chain: Box One 11sp - Shifter: Box One - Derailleur: Box One Seatpost: BikeYoke Revive. 185 mm Bar: Answer ProTaper Carbon, 810 mm, 25 mm rise Stem: Answer AME 40 mm Headset: Cane Creek 40 Pedals: Look X-Track En-Rage Grips: ODI Elite Pro or Oury push-on Saddle: Velo

9 Comments

  • 1 0
 Thanks for that - someone mentioned their Spec Eliminator 2.6 rubs when cornering on a 30mm rim. Is the 2.6 purgatory ok when charging hard? Cheers trying to choose the widest non- rubbing tyre I can but everyone saying 2.5 maxxis is great and someone else says 2.5 maxxi rubs etc so who knows lol
  • 1 0
 Specialized can write whatever they want on the sidewall, but that doesn't make it true. The 2.6" Purgatory simply isn't a 2.6" tire - it's smaller than some nominally 2.5" tires. On my 36 mm (internal) rims, it does not rub the stays. The tire's box lists the actual width of the tire on various rims and all measurements are well under 2.6", so Specialized even acknowledges the problem - and these listed widths are still a tiny bit short of the actual width.

It's possible Specialized has become more honest with their sizing on the Eliminator. Would be easy to do: just use last year's also-fraudulently-sized 2.8" casing and rename it 2.6".

I can only reiterate what I wrote earlier:

• 2.6" Kenda Nevegal2: Rubs frequently, even with at least 1 mm trimmed off the outer edges of the side lugs. Slightly oversized. Visibly larger than the other tires.
• 2.6" IRC Tanken: Rubs occasionally. True to size.
• 2.6" Vittoria Martello: May rub once in a rare while, but not enough to worry about, if at all. Slightly undersized. Tread is clustered toward the centre: looks like a 2.4" tread on a 2.5" casing.
• 2.6" Specialized Purgatory: Doesn't rub because it's not 2.6". GRID casing is fragile, too: three punctures in about a dozen rides.

And yes, this is charging hard.

My recommendation is the Vittoria Martello as largest tire that will fit with minimal rubbing. The combination of large casing and narrow tread makes full use of the available space and the tire has a nice ride quality, especially for the rear.
  • 1 0
 It was a fun build! Some parts were known items from my vendors and some were being tested for use in a high-end build kit option.
  • 1 0
 Cheers! Good to know - I have a supply of the specialized 2.6 casing tyres so sounds like they’ll slot in the more no problems. Thanks for the info
  • 2 0
 That's a unique build. Not the same old same old stuff.
  • 2 0
 I dig the saddle angle. XC position I call it. I use very similar.
  • 1 0
 Yeah, it's working for me. Unlike photos of trails, this looks steeper than it is! Most saddles are concave upward - i.e. the rear slopes down, while the front is pretty flat. This saddle is flat with a downward-sloping nose, so the rear is actually at a similar angle to saddles that look fairly "flat", but the nose makes this look very downward sloping.

Long story short, I think this profile makes sense for mountain bikes, since the nose is less likely to hook your shorts and if I ever have to slide forward to maintain balance on a steep climb, the nose is at a better angle than if the saddle were concave upward.
  • 1 0
 Hows the clearance for the 2.6 on the rear? Did you stick with that?
  • 1 0
 Depends who's measuring!

Tightest spot is on the seatstays, beside the side lugs. Clearance elsewhere is always adequate.

• Specialized Purgatory 2.6": Loads of clearance ... because it's not really a 2.6".
• Vittoria Martello 2.6": Adequate clearance. Lugs are clustered toward the centre of the tire, so they don't stick out as far, providing good clearance.
• IRC Tanken 2.6": Tight, but okay.
• Kenda Nevegal2 2.6": Trimmed about 1 mm off the outside of the side lugs; still buzzes the seatstays frequently. It measures 2.6" on a 30 mm rim and about 2.65" on a 36 mm rim, which is what I mainly used for testing.

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