CROWBAR

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$8,500.00
$8,500.00
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Description

build kit

  • TCI Carbon bars
  • TCI 7075AL CNC stem
  • TCI 7075AL CNC post clamp
  • TCI 7075AL CNC dropout w/spare.
  • FOX Factory 38 Grip2 160mm fork
  • FOX DHX2 rear shock w/TCI tuning
  • Titanium rear shock spacers
  • Wheels Mfg. 30mm threaded PF30 swingarm pivot.
  • BikeYoke Revive dropper choice of 160mm or 185mm.
  • We Are One Union rims
  • Industry Nine Hydra hubs
  • Sapim X-ray spokes
  • Cush Core tire inserts
  • RaceFace 6C Cranks w/Wolf Tooth StopDrop chainring
  • SRAM G2 Ultimate Brakes
  • SRAM XO1 Eagle cassette
  • Shimano XTR Rear shifter
  • Shimano XTR rear Derailleur
  • Robert Axle/TCI rear CNC axle
  • Cane Creek 40 headset
  • ​Enduro dual-row Bottom bracket for 30mm cranks
  • Maxxis Assegai/DHF Tires
  • ODI Lock On Elite grips

GEO + SPECS

WHEEL SIZE ------------------------------------- 29" x 2.6"
FRAME SUSPENSION TRAVEL ---------------------- 140MM
SUGGESTED FORK TRAVEL ------------------- 160-170MM
REACH ----------------------------------------------  470MM
HEAD TUBE ANGLE ----------------------------------- 63.6*
SEAT TUBE LENGTH -------------------------------- 438MM
STATIC CHAINSTAY / REAR CENTER LENGTH ----- 413MM
25% SAG CHAINSTAY / REAR CENTER LENGTH -- 420MM
EFFECTIVE SEAT TUBE ANGLE 30" INSEAM -------- 77.7*
EFFECTIVE SEAT TUBE ANGLE 33" INSEAM -------- 77.0*
STATIC WHEELBASE ------------------------------ 1233MM
WHEELBASE AT SAG HEIGHT -------------------- 1239MM
STACK ---------------------------------------------- 630MM
EFFECTIVE TOP TUBE -------------------------- --- 609MM
HEAD TUBE LENGTH ------------------------------- 109MM
BOTTOM BRACKET HEIGHT WITH 2.5 TIRES ----- 343MM
BOTTOM BRACKET DROP ---------------------------- 31MM
WEIGHT FRAME MINUS SHOCK  --------- 7.6LBS / 3450G
WEIGHT DHX2 + TCI LIGHT COIL -------- 1.7LBS / 772G
SUGGESTED FORK OFFSET --------------------- 41-46MM
SHOCK LENGTH AND STROKE------ 7.25x1.75 or 184x44
SEATPOST ------------------------------------------ 34.9MM
HEADSET ------------------------------------- ZS44 / ZS56
BOTTOM BRACKET ------------------------------------ BB92
FRONT SUSPENSION PIVOT ------------------ 30MM XXXX
REAR AXLE --------------------------- 12MM/1.5TP/172MM​

design details

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  • Sizing....... In the effort to not go broke investing in this project, while assessing how well the bike is received, there will only be one size frame available for now. The 470mm reach combined with the short chainstay, is working well covering a broad range of people from 5'6" or so with longer legs, to 6'0" tall having a normal build. A 30" inseam can still function with the 160mm Bike Yoke Revive dropper, but would be the shortest inseam length to use with the 160mm. If you have a 32" inseam you can use the 185mm Bike Yoke Revive option. I'm calling this first frame a Medium. Also, there is a kitted up weight limit of about 215lbs rider weight, as I don't have any coils stiff enough at this time for riders heavier than that, that can keep the proper sag percent.
 
  • Frame weight and other details.... there was excessive flex in the Rev1 swing arm, which mandated more carbon fiber sheer volume be strategically added, to help control the lateral flex at the wheel. While in my opinion some flex is desired for better rear wheel traction and rider comfort, I still had to add about 300 grams of carbon to get things where I was happy with the management of the flex. More weight, but this bike is designed to be ridden HARD, in true DH racing type scenarios, so that extra carbon mass also makes this frame now extra strong. Not just strong under normal riding forces, but even from crash impacts as the structure is now so thick-walled. Considering the strength the design has morphed into, with lighter weight components and 850 or so gram tires, builds at right about 30lbs are possible. In the future I plan to play with the carbon layup more and possibly drop a little weight. The rear swingarm does have a bit of flex to it still, but it's just the right amount engineered in to create that planted locked in predictable traction. This engineered flex is also a key point in keeping the short chainstay design stable at high speed, as side to side deflections are absorbed. 
 
  • Frame internal design..... A loud echoey frame is the worst. Be it cable rattle, chain slap, or even the freewheel and suspension sounds magnified through the carbon frame, which really makes a bike sound terrible. After we receive these frames from overseas, a lot of details are finished in-house at our shop. The key thing being filling the frame downtube and swing arm lower half here with with closed cell 2-part expanding foam. This does add about 150 grams to the frame weight, but it is SO worth it. Full length nylon cable guides are embedded in this foam, which makes everything so silent. No magnified sounds and the most pleasant riding experience possible. This foam is also very stiff, so slight improvement in frame carbon impact resistance also.​
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  • Front center and rear center bias......  "On-paper" the chainstay length sounds extremely short, but it's length is a critical part of my design. With the long front center and very slack head tube angle(for a 29er trailbike), the short chainstay helps prevent too much weight on the front tire, effectively combating the normally lazy floppy traits of a DH bike slack front end. This thing rips in tight techy terrain, can pop around the trail with ease, and effortlessly last second lofts over anything when the time comes. It plows like a normal coil shock does in chunder, and can still pop around the trail like your average low 30's pound air-shocked trailbike. Side note......It sprints under power and climbs techy terrain like a Gazelle! Even though the swingarm design is not a high-pivot design in any way, the chainstay length does grow a little more than most bikes through the suspension travel. This means at normal sag-height the chainstay length has grown to 420mm, and grows through the travel, so the more travel you use the more stable the bike feel.. This chainstay length growth does give a little bit more than average pedal feedback, when climbing chunky terrain, but the performance and energy transmitting advantages seem to greatly outweigh anything you actually feel. I've never really noticed any pedal feedback at speed. I just put on some i9 Hyrda 5 billion point engagement hubs, and I thought I might feel more pedal kickback than the 36 point that was on the bike, but I didn't.
 
  • Performance and riding style..... I designed this bike to be fast. It's a pure-bred Enduro race bike. While I'm labeling it that way, you also need to know that being able to change lines in a split second, quickly push or pull on the bars to modulate ever changing traction, lean the bike over and shred the tires outer knobs, gap an obstacle with minimal effort, etc, are all traits "I" feel make a great race bike. Also makes a fun bike! Others might think that a stable straight-line-masher is what makes a fast race bike, but not me. This also means that while this bike CAN straight-line mob with the best of them, to take full advantage of the design you need to be an "active on the bike", strong rider. Heavily weighting the front end when traction allows is fun, and takes some extra upper body strength to do so. Lifting the front end is a breeze. Pumping is super efficient with your weight so close to the rear tire. If you are a rider that likes to settle in line with the bike, follow the trail features instead of using them for speed and fun, and are not one to be active and not separate your body from the bike, this bike might seem a bit big and awkward to you. If you are the type of rider just out to have a fun time on a mountain bike cruise, a lighter weight more conservative geometry bike will seem more sporty and agile.