Rocky Mountain Bicycles.

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FLATLINE 3

Mountain, Gravity & Freeride

Specification

FrameRMB FORM 7005 Alu, hydroFORMed downtube, alu seatstay, alu chain stay
ForkMarzocchi 888 RCV
Front Travel200mm, Rebound
Rear ShockFOX DHX 3.0 Custom Valved
Rear Travel170-213mm
Head SetFSA Orbit Z1.5 / 1 1/8
StemMarzocchi Integrated 31.6mm
HandlebarRMB Alloy DH 31.8mm 30mm rise 700mm
BrakesFormula ORO K18 hydraulic disc
Brake LeversFormula ORO K18
ShiftersSRAM X7 Triggers 9spd
Gearing (FR)N/A
Gearing (RR)SRAM X9
Cranks & ChainringsRace Face Ride DH X Type 170-175MM 36t/E13 LG1 Guide
Bottom BracketRace Face Ride DH X-Type
PedalsRMB Flat
Hubs (FR)Wheeltech disc cartridge bearing 20mm axle
Hubs (RR)Wheeltech disc cartridge bearing W/12mm Thru axle
CassetteSRAM PG-950-9 11-32T
ChainSRAM PC951
SpokesDT Champion
RimsAlex FR32 dbl wall disc w/eyelets
Tires (RR/FR)WTB Prowler MX 2.5 Comp FT / Dissent 2.5 Team RR A.V.
Seat PostRMB SP-601 2-Bolt 30.9mm
SaddleWTB Pure V Race

Geometry

SizeXS mm (Fork 22,2 inch)XS mm (Fork 22,8 inch)S mm (Fork 22,2 inch)S mm (Fork 22,8 inch)M mm (Fork 22,2 inch)M mm (Fork 22,8 inch)L mm (Fork 22,2 inch)L mm (Fork 22,8 inch)
Head Length
Head Angle65.7°64.6°65.7°64.6°65.7°64.6°65.7°64.6°
Seat Angle70.3°69.2°70.3°69.2°70.3°69.2°70.3°69.2°
Seat Tube length1515161617171818
Horiz. Toptube Length2222222223232424
Headtube Length44444444
Chainstay Length1818181818181818
BB Drop11111111
Wheelbase4545464647474848
Front-Centre
Standover Height2828292929293030
Fork Rake
Seat Tube (center-center)

Flatline Shock Chart
Geometry Descriptions Gideline :

1. Head Angle:The angle at which the Head Tube is oriented in relationship to the ground.
2. Seat Angle: The angle at which the Seat Tube is oriented in relationship to the ground.
3. Horizontal Top Tube Length: The distance from the centre of the top of the Head Tube projected horizontally to the intersection where it meets the Seat Tube axis.
4. Head Tube Length: The length of the Head Tube.
5. Chainstay Length: The distance from the centre of the Bottom Bracket to the center of the rear dropout.
6. Bottom Bracket Drop: The vertical distance from the Bottom Bracket centerline to the wheel axle plane. For some bikes this is a negative number indicating a Bottom Bracket Rise.
7. Standover Height: Distance from the top edge of the Top Tube to the ground measured at approximately the midpoint of the Horizontal Top Tube Length distance.
8. Front-Center: The shortest distance between the front axle and the Bottom Bracket centerline. Note this distance is not measured parallel to the ground, but rather is the straight-line distance between these two points.
9. Wheelbase: The distance from the rear axle to the front axle. The line formed by the joining of these two points serves as a basis of measurement for the Head and Seat Tube angles.
10. Seat tube Length (or frame size): The lenght between the centre of the bottom bracket and the top of the seat tube.

Frame may differt from real one. Use for reference only.

FORM


The heart of a bike is its frame. The geometry, the material, the feel, and the way it reacts under the rider are the very essence of the ride. That’s why we’ve introduced FORM™ – the design and manufacturing process of our high-performance frame tubing. Our philosophy behind FORM™ tubing is to push the limits of tube and frame design to create the frame’s unique riding feel.

Engineered Ride Quality: FORM™ tubing is a line of high-performance tubes designed to elevate the superior ride quality for which Rocky Mountain Bicycles are known. Innovative design: With 25 years of innovation, we continue to push the boundaries of bicycle design. FORM™ tubing is the exciting new frontier of our creativity.

Attention to detail: Every detail in a FORM™ tube set is carefully engineered and has a purpose: from the slightest variations in shape, to wall thickness, tapers, flares and bends.

Uncompromised quality: FORM™ tube sets are manufactured with premium materials and delivered by the best suppliers in the industry to meet Rocky Mountain’s strict requirements.

LC2R


The Low Centre Counter Rotating - LC2R - patented suspension is a laterally stiff design that offers a highly predictable ride in all conditions. Its low sprung weight and concentrated suspension mass allow the LC2R suspension to respond faster to ground forces, such as stutter bumps, and keep the rear wheel glued to the ground during acceleration.

LC2R suspension is a single pivot design, with the main pivot located just above and behind the bottom bracket. Both chain and brake forces are concentric to this pivot through-out the suspension travel, which eliminates pedal “bob” and brake jack. A thrust/ tug link engages the top link to create a rising rate suspension and the much-sought-after “infinite travel” feel. We tune LC2R to create an optimal suspension rate for different types of riding – from super cross country to Freeride and to downhill.

FLATLINE

    Ride Guide

  • DH Racing / 100%
  • Freeride / 85%
  • Bike Park / 85%
  • Linearly Rising LC2R suspension rate is tuned for freeride and downhill racing; suspension progression is inherent to the linkage design, not the shock absorber.
  • Concentric to the main pivot point, chain and brake forces eliminate pedal “bob”; suspension is stable during pedaling, and “platform” pedaling is inherent to the suspension design - not the shock.
  • Counter rotating top link creates a more laterally stiff Swingarm for increased control in tight corners, and the occasional sideways landing.
  • The counter rotating link along with the kinked down tube allow for a low and center positioning of the shock absorber in the frame. This low-slung concentrated mass allows the bike to rotate in any direction faster than if the center of mass was positioned higher in the frame.
  • Oversized double-row angular contact bearings increase bearing life, and allow for a less expensive bearing to be used. (more affordable for retail level replacement)
  • Triangulated Swingarm maximizes suspension strength, while keeping its weight to a minimum.
  • Tuglinks (as opposed to thrustlinks) increase suspension sensitivity to very small bumps, further aiding in smoothing out the trail.