FSR Demo 8 Owner's Manual

FSR OWNER’S MANUAL

DEMO 8

1

CONTENTS

INTRODUCTION ...................................................................2

ABOUT OFF ROAD, STUNT, DOWNHILL

AND FREERIDING ...................................................................2

SERVICE AND MODIFICATIONS .........................................3

FORK SETUP INFORMATION ................................................4

SEATPOST SETUP INFORMATION ........................................ 4

BOTTOM BRACKET SPECIFICATION .....................................4

ACCESSORIES .....................................................................4

FRAME FEATURES ...............................................................5

FRAME GEOMETRY ..............................................................6

DEMO 8 ......................................................................................7

SHOCK POSITION ................................................................ 7

SHOCK SETUP ..................................................................... 8

SETTING SAG ...........................................................................8

SETTING REBOUND...............................................................8

SETTING THE IFP (BOOST VALVE) ....................................8

SETTING COMPRESSION .....................................................8

SETTING BOTTOM-OUT CONTROL ...................................8

COIL SPRING RATE SPECIFICATIONS ..............................8

FRAME SCHEMATIC ............................................................. 10

FRAME PIVOT SPECIFICATIONS ........................................... 11

SETUP DATA ........................................................................ 12

Please note all instructions are subject to change for improvement without notice.
Please visit www.specialized.com for periodic tech updates.
Feedback: [e-mail]

OM0313 - Rev. A, August 2010

2

INTRODUCTION

Congratulations on your purchase and welcome to the finest line of suspension bikes

available!

About Off Road, Stunt, Downhill and Freeriding

This manual is designed to be used in conjunction with the Bicycle Owner’s Manual
and owner’s manuals supplied by the manufacturer of the front and rear suspension
components. If you did not receive any of these manuals, download them from the Internet,
contact your Specailized authorized dealer, or contact us by telephone. There may be more
current manuals and technical information available. For the most current information,
regularly check the Specialized web site or consult your Specialized authorized dealer.
These manuals were written for an important reason: your safety while riding.

This manual contains many “Warnings” and “Cautions” concerning the consequences
of failure to maintain or inspect your bicycle or of failure to follow safe cycling practices.
The combination of the safety alert symbol and the word Warning indicates a potentially
hazardous situation which, if not avoided, could result in serious injury or death. The
combination of the safety alert symbol and the word Caution indicates a potentially
hazardous situation which, if not avoided, may result in minor or moderate injury, or damage
to your bicycle or a component. Because the consequences of not following a Warning
usually include “you may lose control and fall,” which could result in serious personal injury
or death, we may not repeat this in conjunction with each Warning. Because it is impossible
to anticipate every situation or condition which may occur, a practice or situation may be
unsafe but not anticipated by this manual. So, don’t forget to use your common sense.

WARNING! Make sure you have, review, and understand the warnings,
instructions, and content of the manuals for your bicycle.

ABOUT OFF ROAD, STUNT, DOWNHILL AND FREERIDING

Downhill racing, severe off road riding, jumping, and stunt riding is extremely dangerous.
Some downhill racers and freeriders reach speeds similar to motorcycles, thus face similar
risks and hazards. When engaging in these activities, you, your bicycle and safety equipment
must be in perfect condition. We recommend that at all times you wear appropriate safety
gear, such as an approved full face helmet, full finger gloves, and body armor.

Not every bicycle is built for every activity. Check with your Specialized authorized
dealer to make sure you have the right equipment.

No bicycle is indestructible. Downhill racing, severe off road riding, jumping, and stunt
riding increases the stress on every part of your bicycle. Frames or parts under high stress
may fail, causing you to lose control or fall. Because of the risk involved, Specialized
recommends that you conduct a thorough inspection before each ride. If you miss a jump,
ditch your bike in mid crash, dump or launch your bike without you on it, inspect yourself
for injury, then carefully inspect your bicycle for damage.

Here is what you should look for when you inspect your bicycle for this type of riding:
bent or broken components, such as the handlebar, handlebar stem, seatpost, pedals;
dents, cracks, scratches, deformation, or discoloration. Because damage may be internal
and hidden, if any of these signs are present, stop riding until your bicycle has been
thoroughly inspected by your Specialized authorized dealer.

WARNING! Although many catalogs, advertisements and articles about bicycling
depict riders racing, jumping, riding hard off road, and/or stunt riding, this activity
is extremely dangerous, increases the rider’s risk of injury or death, and potentially
increases the severity of any injury. The action depicted is being performed by
experts with many years of training and experience. Even with that training and
experience, cyclists who engage in such activity often get seriously injured. It is
also foreseeable that during some jumps or stunts, and even some races, that the
rider will exceed the design capacity of the frame or components, which may
result in something on the bicycle bending or breaking. If a frame or component
bends or breaks, such may lead to loss of control, serious personal injury or death.

3

As activities such as racing, jumping, severe off road riding, and stunt riding are
extremely dangerous, SAFETY should always be the first consideration. Don’t ride in
the race, ride hard off road, try the jump, or do the stunt, UNLESS YOU CAN DO SO
SAFELY. Here are some additional recommendations:

 Take lessons from a competent instructor first.

 Do jumps or stunts only in areas designated for this type of riding.

 Start with easy jumps and easy stunts first, and slowly develop skills before trying

more dangerous jumps or stunts.

 Wear appropriate safety gear, such as a full face helmet, body armor, full finger

gloves, etc.

 Make sure by checking with your Specailized authorized dealer that your bike is

suitable for the kind of activity you intend to engage in.

 Constantly inspect your bicycle for signs of stress: cracks in the paint; dents;

crushing or bending of the frame; bent components. Do not ride your bicycle if it
shows such signs of stress.

 Do not seek to bend or break the frame or components. Remember, SAFETY FIRST!!!

Understand and recognize that the stresses imposed on your bike by riding at speed,
jumping or stunt riding may break or damage parts of the bicycle, which may result in loss
of control, serious injury or death.

Specialized does not warrant the bicycle frame or components for such activities, and
expressly disclaims all warranties, including the warranty of fitness for particular purpose
and merchantability.

Stunt riding, severe off road riding, jumping, or riding downhill at speed is extremely
dangerous, and the rider voluntarily assumes the risk that the bicycle frame and/or its
components will bend or break, and voluntarily assumes the risk of injury or death.

SERVICE AND MODIFICATIONS

Technological advances have made bicycles and bicycle components more
complex, and the pace of innovation is increasing. It is impossible for this manual or the
accompanying manuals to provide all of the information required to properly repair and/or
maintain your bicycle. In order to help minimize the chances of an injury, it is critical for you
to have work performed by a Specialized authorized dealer.

WARNING! Service on Specialized bicycles requires special knowledge and
tools. Specialized recommends that all service and repairs be performed by a
Specialized authorized dealer.

Your bicycle has been engineered and tested with specific components and parts.
Because of the great variety in these items, it is impossible for Specialized to test and
approve of all possible combinations. Modifying the frame, fork, or any of the components
may make your bike unsafe. For example, changing the front suspension on your bicycle
may alter the steering characteristics and/or add stresses to the frame which have not
been tested for. If you must replace any component, have this done by your Specialized
authorized dealer.

WARNING! Never modify your frame or bicycle in any way. Do not sand, drill,
fill, or remove parts. Do not install incompatible forks or suspension parts. An
improperly modified frame, fork, or component, can cause you to lose control
and fall.

CAUTION: Any modification of your frame, fork, or components means that
your bike no longer meets our specifications and therefore voids your warranty.

4

FORK SETUP INFORMATION

WARNING! Demo frames are compatible ONLY with dual crown forks that have
travel of 8” (203mm) or less. Use of different styled forks or forks with longer

travel may result in catastrophic failure of the frame which may result in serious
personal injury or death.

SEATPOST SETUP INFORMATION

100mm

Minimum Seatpost

Insertion Guide Hole

SEATPOST MINIMUM INSERTION: To
prevent damage to the frame, it’s important to
have a minimum amount of seatpost in the seat
tube.

Aluminum frames:

If you cannot see the seatpost tube through
the seat tube hole, your seatpost is too far
extended. If a greater saddle height is required,
replace the seatpost with a longer one.

BOTTOM BRACKET SPECIFICATION

The Demo frame is equipped with the PF-30 DH 83mm wide bottom bracket shell
configuration and PF-30 DH threaded cups. This provides compatibility with current
83mm DH spec cranks for threaded shells, as well as compatibility with future oversized
crank configurations.

ACCESSORIES

Specialized offers replacement chainstay protectors, available through your
Specialized authorized dealer.

5

FRAME FEATURES

1

2

7 4

9

3

10

11

5

6

8

12

1. Main Frame 5. Main Pivot 9. Upper Shock Eyelet

2. Seatstay 6. Dropout (Horst) Pivot 10. Lower Shock Eyelet

3. Chainstay

7.

-Link @ Seatstay Pivot

11. Shock

4.

-Link 8. -Link @ Frame Pivot 12. Replaceable Derailleur Hanger

6

FRAME GEOMETRY

1. Top Tube Length

1

4. Seat Tube Angle

2

7. Standover Height

3

10. Reach

2. Chainstay Length 5. Head Tube Angle 8. Head Tube Length

3. BB Height 6. Wheelbase 9. Stack

9

1

4

5

3

6

2

10

7

250mm

8

1

TT length is the Horizontal Measurement from the center-line of the HT at the top of the

HT to the center-line of the projected seat tube.

2

Effective Seat Tube Angle is measured from BB to 250mm above seat collar.

3

Stand Over height is measured vertically at the centerpoint of the TT measurement.

Headset: 1.5” BB shell: PF-30 DH, 83mm

Seatpost diameter: 30.9mm Derailleur Hanger: 9891-4010

Seat Collar: 34.9mm Eye-to-Eye: 241mm (9.5”)

Rear hub spacing: 150mm, 12mm thru-axle Shock Stroke: 76mm (3.0”)

7

DEMO 8

X-SMALL SMALL MEDIUM LARGE

1 540 21.26” 560 22.05” 580 22.83” 597 23.50”

2 421 16.57” 421 16.57” 421 16.57” 421 16.57”

3 (low) 343 13.50” 343 13.50” 343 13.50” 343` 13.50”

3 (high) 353 13.90” 353 13.90” 353 13.90” 353 13.90”

4 (low) 76° 76° 76° 76°

4 (high) 76.8° 76.8° 76.8° 76.8°

5 (low) 64° 64° 64° 64°

5 (high) 64.8° 64.8° 64.8° 64.8°

6 1151 45.31” 1171 46.10” 1191 46.89” 1208 47.24”

7 717 28.23” 717 28.23” 722 28.43” 731 28.78”

8 112 4.41” 112 4.41” 112 4.41” 112 4.41”

9 593 28.23” 593 28.23” 593 28.23” 593 28.23”

10 390 15.35” 410 16.14” 430 16.93” 447 17.60”

SHOCK POSITION

The lower shock eye is equipped with an eccentric cam. This cam offers two geometry
positions to adjust for rider preference.

 To access the cam, remove the lower shock eye bolt (2-G on the schematic, page

10) and dislocate the lower shock eye from the shock extension.

 Insert a 3mm Allen key to rotate the cam 180°.

LARGE HOLE POSITION:

 Closer to the shock body will lower the bottom bracket and slacken the head angle.

 Farther from the shock body will raise the bottom bracket and steepen the head angle.

LOW SETTING

BB Height: 343mm

Head tube angle: 76°

HIGH SETTING

BB Height: 353mm

Head tube angle: 76.8°

8

SHOCK SETUP

SETTING SAG

MODEL SAG (%) SAG (mm)

Demo 8 25 - 30 19 - 23

Proper sag should be achieved with one turn of preload on the spring. More then two turns
of preload will require a higher spring rate or not enough sag will require a softer spring rate.

See spring rate chart below for additional information or refer to the shock manual.

SETTING REBOUND

Rebound damping (red knob) controls the rate at which the shock returns after it has
been compressed.

 Clockwise for slower rebound (slow speed, bigger hits).

 Counter-clockwise for faster rebound (higher speeds, small bumps, more traction).

SETTING THE IFP (BOOST VALVE)

DHX RC4 ONLY: The IFP (Internal Floating Piston) sets up the overall rate of

compression damping.

Pressure range of IFP: 125 to 200 PSI.

 Higher pressure: More bottom-out control

 Lower pressure: Less bottom-out control

SETTING COMPRESSION

DHX RC4 / VAN RC: Low-speed compression damping (small blue knob) controls

slower suspension movement, which helps in pedaling efficiency and bike attitude.

 Clockwise for a firmer platform and more efficient pedaling, greater resistance to

small and medium bumps, more harshness.

 Counter-clockwise for a more active, supple reaction to terrain, less efficient

pedaling, less harshness.

 Turn the compression adjuster knob to full firm and ride your bike for a while, then

gradually reduce compression until it starts to feel too soft / active for the terrain. Gradually
increase compression until the optimal setting is found for the terrain and riding style.

DHX RC4: High-speed compression damping (gold dial under small blue knob)
controls faster suspension movement during events such as steep jump faces, flat jump
landings and square edge bumps.

 Clockwise for more bottom-out resistance and less wallowing in the face of jumps.

 Counter-clockwise for less bottom-out control and a more active shock.

 High-speed compression can be adjusted in conjunction with the bottom-out control dial to

keep the high-speed compression damping resistance low while still preventing bottom-out.

SETTING BOTTOM-OUT CONTROL

DHX RC4: Bottom-out (large blue knob) controls the last part of the compression stroke.

 Clockwise makes the shock more progressive at the end of the stroke (more bottom

control).

 Counter-clockwise produces a more linear feel.

COIL SPRING RATE SPECIFICATIONS

BIKE MODEL X-SMALL SMALL MEDIUM LARGE

DEMO I / II 300 350 400 450

9

THIS PAGE IS INTENTIONALLY LEFT BLANK

10

FRAME SCHEMATIC

NOTE - Bearing and Bolt Kits are available only through your local Specialized authorized

dealer. To retain your warranty and for your safety, all maintenance should be performed by
your Specialized authorized dealer.

1-E

1-D

1-F

1-D

1-E

1-D

1-E

1-I

1-H

2-F

2-E

1-G

1-L

1-B

1-A

1-A

1-C

1-B

1-A

1-A

2-B

2-D

2-G

2-H

2-I

2-C

1-E

1-D

1-F

2-C

2-A

2-E

1-I

1-K

2-D

1-G

1-L

2-J

1-J

DROPOUT

CHAINSTAY

CHAINSTAY

EXTENSION

CHAINSTAY

BB SHELL

SEAT TUBE

SHOCK YOKE

DROPOUT

SEATSTAY

S-LINK

SHOCK SHOCK

MOUNT

11

PART # 9891-5260 SPECIFICATION

ITEM # LOCATION PART QTY

MODEL Ø OD Ø ID

1-A

Bottom Bracket

Bearing 4 Steel 1524F (6802 RS) 24 15 5 Full Complement

1-B Spacer 2 Aluminum 26 15 3.2 Recessed

1-C Sleeve 1 Aluminum 19 15 45 Tapered

1-D

Dropout

Bearing 4 Steel 1524F (6802 RS) 24 15 5 Full Complement

1-E Spacer (outer) 4 Aluminum 23.5 15.1 2

1-F Spacer (inner) 2 Aluminum 19 15.1 4

1-G

S-Link @ Seat Tube

Bearing 2 Steel 1524F (6802 RS) 24 15 5 Full Complement

1-H Spacer 2 Aluminum 21.6 15.1 3

1-I

S-Link @ Seatstay

Bearing 2 Steel 1524F (6802 RS) 24 15 5 Full Complement

1-J Spacer 2 Aluminum 21.6 15.1 3

1-K

Extension @ Shock Yoke

Bearing 2 Steel 1524F (6802 RS) 24 15 5 Full Complement

1-L Spacer 2 Aluminum 21.6 15.1 3

PART # 9891-5265 SPECIFICATION

ITEM # LOCATION PART QTY

Ø OD Ø ID

2-A

Bottom Bracket

Axle 1 Aluminum 15 86 8 Allen Hex 225 - 255

2-B Axle Nut 1 Aluminum 23.7 15 4 Oblong

2-C Dropout Bolt 2 Aluminum 15 20 8 Allen Hex 225 - 255

2-D S-Link @ Seat Tube Bolt 2 Aluminum 15 20 8 Allen Hex 225 - 255

2-E S-Link @ Seatstay Bolt 2 Aluminum 15 20 8 Allen Hex 225 - 255

2-F Extension @ Shock Yoke Bolt 2 Aluminum 15 20 8 Allen Hex 225 - 255

2-G Extension @ shock Bolt 1 Steel 8 25 Chamfered 6 Allen Hex 180 - 200

2-H

Upper Shock Eye

Bolt 1 Steel 8 35 Chamfered 6 Allen Hex 180 - 200

2-I Spacer 1 Aluminum 16.6 8.1 2.5

2-J Nut 1 Aluminum 12.5 8 8 12 6pt Socket

FRAME PIVOT SPECIFICATIONS

12

SETUP DATA

DATE

RIDER WEIGHT

FORK SPRING RATE

FORK REBOUND DAMPING

(# of clicks from full slow)

FORK COMPRESSION DAMPING

(# of clicks from full firm)

SHOCK SPRING RATE

SHOCK REBOUND DAMPING

(# of clicks from full slow)

SHOCK COMPRESSION DAMPING

(# of clicks from full firm)

SPECIALIZED BICYCLE COMPONENTS

15130 Concord Circle, Morgan Hill, CA 95037 [phone]
www.specialized.com