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The Dentist's Enduro

ianjenn

Turbo Monkey
Sep 12, 2006
2,998
702
SLO
2017 Firebird - XT_XTR pro 1X - RED-CARBON.jpg
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  • Phoenix DH-influenced long and low geometry
  • Short 430mm (16.95”) chainstays
  • 170mm dw-link™ rear suspension with upper clevis and linkage and double wishbone rear triangle
  • Fox Float Factory X2 rear shock*
  • Features a 170mm Fox 36 Factory fork
  • 27.5 wheel compatible, fits tires up to 2.5” wide
  • Boost™ spacing front and rear
  • Front derailleur compatible with Pivot’s stealth E-Type mounting system.
  • 180mm rear post mounts (no adaptor required)
  • Pivot Cable Port system for easy internal routing of shifters, brakes and droppers and full Di2 Integration
  • Internal dropper post compatible
  • Cold forged alloy linkages with Enduro Max Cartridge Bearings
  • New ultra quiet low durometer rubberized frame protection
  • Available in sizes S, M, L, XL for riders between 5'4" and 6'7
- See more at: http://www.pivotcycles.com/bike/firebird/#1
 

ianjenn

Turbo Monkey
Sep 12, 2006
2,998
702
SLO
The LG is good size. I wish the BB was a bit lower maybe 13.25"? Geo wise it looks good though....
 

canadmos

Cake Tease
May 29, 2011
20,190
19,156
Canaderp
There doesn't appear to be any missing links on that bike.

It looks good to me. But it'd be way too much bike for most trails here.
 

HAB

Chelsea from Seattle
Apr 28, 2007
11,580
2,005
Seattle
Neat that they finally made a bike (other than the Phoenix) with reasonable reach numbers.

As noted, the BB is too damn high, but 26" wheels would fix that. Geo does look good otherwise.
 

norbar

KESSLER PROBLEM. Just cause
Jun 7, 2007
11,346
1,587
Warsaw :/
The LG is good size. I wish the BB was a bit lower maybe 13.25"? Geo wise it looks good though....
13.25 with 170mm travel? That would mean it's around demo levels on a bike that is sometimes meant to be pedaled.

I love the bike though. If only Pivot had a better reputation and I had more dentist offices (currently 0) so I could afford one, crack one and then be rich enough not to care.
 

norbar

KESSLER PROBLEM. Just cause
Jun 7, 2007
11,346
1,587
Warsaw :/
The 12.7" on the MEGA was fine for the most part....some crank clangs but just needed to keep track on rockier terrain.
I think it very much depends on the trails you ride. On many of them I'd love that bb height but I remember riding the mountain of hell quali track on my dh bike and 13.7'' felt low as hell and I dragged my bash to a stop a few times
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
If anyone's interested in what BB height their trailbike should have based on a DH bike, I made a little calculator a few years ago. You only need to change the front/rear travel values for the trailbike, but the other values can be edited too. It can be downloaded (or you can wreck my google sheet, I don't mind).

I updated the title to reflect new R&D by @StiHacka .



The calculator says for a 170mm (6.7") travel bike (like the Firebird), a 13.51" BB would be ideal, in case anyone is wondering.
 
Last edited:

slimshady

¡Mira, una ardilla!
If anyone's interested in what BB height their trailbike should have based on a DH bike, I made a little calculator a few years ago. You only need to change the front/rear travel values for the trailbike, but the other values can be edited too. It can be downloaded (or you can wreck my google sheet, I don't mind).

I updated the title to reflect new R&D by @StiHacka .



The calculator says for a 170mm (6.7") travel bike (like the Firebird), a 13.51" BB would be ideal, in case anyone is wondering.
That falls dead on with the actual BB height of my Rallón. Nice work!
 

Jm_

sled dog's bollocks
Jan 14, 2002
18,852
9,557
AK
I think it very much depends on the trails you ride. On many of them I'd love that bb height but I remember riding the mountain of hell quali track on my dh bike and 13.7'' felt low as hell and I dragged my bash to a stop a few times
Even if you only ride dental-smooth flow trails, every once and while you'll catch a pedal on a berm as you try to lean the bike at speed. Not cool. It's the same retardation pushing towards 59 degree HAs and 15.8" chainstays, because going further is always better...