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TABLE OF CONTENTS

Tutorial video showing how to set up the suspen-

sion on a full-suspension bike.   

     

  

Watch the video

INITIAL SAG 

Suspension settings are a matter of personal prefer-

ence. Some riders prefer a soft setup, others a hard 

setup. Depending on the riding style, skills, and con

-

ditions on the route. The suspension on a trail/ en-

duro bike works fine with approximately 20% -30% 

initial sag. For the front shock, the value of 20-25% 

should be assumed, while for the rear shock the ini

-

tial deflection should be about 25-30% of the total 

stroke. Before starting work, set the return damping 

to the fully open position. 

To measure the SAG, follow the instructions/indica

-

tions below:

•  Move the O-ring on the stanchion so it touches the 

fork seal, the same for the rear shock.

•  Stand on the pedals with your full body weight 

with full equipment: protective armor, helmet, 

neck protector, water bottle or water bag, etc. It is 

important that the equipment and clothing reflect 

the real riding conditions to give the most accurate 

results. While standing on the bike, bend the sus-

pension several times, then push the O-ring against 

the shock seals again. It is best to have someone 

to help, but you can deal with it yourself, for ex-

ample by leaning against the wall of the building.

• 

Get off the bike carefully and measure the SAG with 

a ruler or tape measure printed on the stanchion, 

or ask someone to read the value on the scale 

when standing on the bike in a neutral position 

(slightly bent knees and hands in elbows). Inflate 

or deflate the damper until the desired deflection 

of the shock is achieved.

6. SUSPENSION SETTINGS

YT

In the case of an ungraduated rear shock, to determine 

the percentage of initial deflection, its total deflection 

must first be measured, because it is shorter than those 

given in the catalog for the total travel of the rear swing-

arm. To do this, reduce the pressure in the air chamber 

so that you can bend the shock to its extreme posi-

tion, then inflate it and measure the distance between 

the  O-ring  and  the  seal.  For  example,  a  bicycle  with 

 

160 mm travel has a rear shock with 70.87mm deflection, 

assuming a SAG of 30%, its value measured on the shock 

absorber piston with correctly set pressure should be 

21.26mm (70.87 x 0.3 = 21.26mm).

REBOUND 

– return damping 

 

(rebound speed)

In  the  damper  return  damping  setting,  the  so-called 

„curb test” works best. To proceed with the adjustment, 

follow the instructions/indications below:

•  Unscrew the Rebound valve to the extreme position, de-

pending on the manufacturer on the casing towards the 

„bunny” symbol, „Fast” or minus sign. There is no return 

damping in this position.

•  Find a less traveled road in your area with a medium 

size curb.

•  While sitting in the saddle, without using the brakes, 

slowly descend from the saddle. The damper piston re-

tracts first, then returns to its original position and be

-

gins to oscillate until it stops.

•  To counteract the “rocking” phenomenon, turn Re-

bound two clicks towards the “turtle” symbol (+; “slow”) 

and repeat the test by rolling off the curb. By adjusting 

in this way, you should observe the moment when the 

damper stops oscillating after a rebound.

•  The resulting setting is the initial setting from which you 

should start. Further adjustments for two clicks back

-

ward or forwards can be made on the trail depending 

on riding conditions and preferences.

• 

Remember that, as with the SAG, the return suppression 

is determined by the weight of the user and all equip-

ment. The greater the weight of the bike user, the great-

er the damping will be needed to absorb the rebound 

energy.

It is best to set the front shock return damping as follows:

•  Start by unscrewing the damper to the extreme position 

as it was in the case of the damper. Stand next to the 

bicycle, depress the shock as far as possible, and release 

it vigorously. Observe that the front wheel is clear of the 

ground. Increase the damping by two clicks by using the 

adjuster on the bottom of the right shock leg, turning 

towards the „turtle” symbol („+”; „slow”).

• 

Repeat this process until the wheel stops springing off 

the ground. The basic setting obtained in this way can 

be corrected on the trail depending on the driving con-

ditions and individual preferences.

•  Finally, get on the bike and on a straight road, vigorously 

bending the suspension, check that the front and rear 

work evenly. By pressing the suspension in this way, 

bend it in the range of 80-90%, if it is difficult, it may turn 

out that the shock or damper needs to be adjusted in 

terms of the air chamber capacity. To do this, contact an 

experienced service provider who will adjust the size of 

the chamber with the help of tokens.

Summary of Contents for Thunderbird CF PRO

Page 1: ...1 TABLE OF CONTENTS THUNDERBIRDS FULL SUSPENSION BICYCLE MANUAL...

Page 2: ...arnings 2 General riding information 3 Dartmoor Thunderbirds 4 Geometry 5 Service parts accessories 6 Suspension settings 7 Rear wheel assemble 8 Tightening torque 9 External and internal cable routin...

Page 3: ...tools and good mechanical skills Therefore to minimize the risk of serious or even fatal accidents maintenance and assembly work on your bike should be carried out by an authorized bicycle workshop W...

Page 4: ...n that issue if needed Pay attention to the brakes they can be powerful and if activated too aggressively may cause a crash You should spend some time to get a better feel of the brakes on a side road...

Page 5: ...ness for better stiffness The massive rocker is made of one piece of forged aluminum To ensure the proper strength and durability the whole chainstay and the inserts in the points that are the most ex...

Page 6: ...l and EWS races during a season Not a UCI fan Want to be really bad Put a double crown on it and ride like it s 2010 s freeride golden age again For keeping the frame trouble free all pivot points are...

Page 7: ...m of front travel with geometry allowing to fit a 29 inch front wheel means you can easily match it with a dual crown fork and keep the eyes away from your lovely mullet With a great price to build ra...

Page 8: ...ents and demanding climbs will be useful It is up to the rider which route he will take because he has full freedom in this matter There are no inaccessible places for enduro bikes and the more divers...

Page 9: ...drop bottom bracket height BB center to WB WB wheel base Check Check THUNDERBIRD CF PRO THUNDERBIRD CF EVO Size Medium Large Reach 455 480 Stack 633 633 Seat tube 437 452 Eff top tube 613 638 Chainst...

Page 10: ...40 Chainstay 435 435 435 Head tube 110 110 110 HT angle 64 64 64 ST angle 76 76 76 BB drop 25 25 25 Wheel base 1219 1244 1269 Standover 806 806 806 Reach horizontal distance from BB center to HT cente...

Page 11: ...ive BB drop bottom bracket height BB center to WB WB wheel base Check Check THUNDERBIRD FR PRO THUNDERBIRD FR EVO Size Medium Large Reach 445 470 Stack 619 619 Seat tube 430 450 Eff top tube 540 565 C...

Page 12: ...the document PDF size cm M L 160 165 170 175 180 185 190 195 200 size cm M L 160 165 170 175 180 185 190 195 200 size cm M L 160 165 170 175 180 185 190 195 200 size cm M L 160 165 170 175 180 185 19...

Page 13: ...r Bikes equipment Chainstay for Thunderbird CF and Suprenduro frame aluminum matt black space blue Thunderbirds derailleur hanger compatible with SRAM UDH Rocker for Thunderbird CF Superenduro and FR...

Page 14: ...sure should be 21 26mm 70 87 x 0 3 21 26mm REBOUND return damping rebound speed In the damper return damping setting the so called curb test works best To proceed with the adjustment follow the instru...

Page 15: ...teep climbs More advanced designs of the shock mount a damper with two regulators fast and slow compression Slow compression damping acts on the first half of the shock travel mainly when braking nego...

Page 16: ...Rocker main pivot bolt 1 pcs 2 6902 MAX LLU bearing 2 pcs 3 Spacer 15x21x2 5 2 pcs 4 Rocker main pivot Nut 1 pcs Rocker seat stay pivot assembly 1 Rocker seat stay pivot shaft 2 pcs 2 Spacer 12x16x1 2...

Page 17: ...ially aligned and that the brake disc is properly seated in the brake caliper put the wheel in the hooks with the chain correctly posi tioned on the cassette insert the axle 12 mm and tighten with a t...

Page 18: ...pivot points The factory uses high quality self lubricating Teflon Tightening torques Nm for individual points on the frame Main pivot assembly 20 Nm Rocker seat stay pivot assembly 10 12 Nm Chainstay...

Page 19: ...19 TABLE OF CONTENTS 9 EXTERNAL AND INTERNAL CABLE ROUTING Rear derailleur cable Dropper post cable Rear brake cable always routed outside SUPERENDURO CF FR...

Page 20: ...no movement between the two Check that there is no additional slack in the controls stand next to the bike tighten the front brake and push the bike back and forth There should be no play between the...

Page 21: ...frame axles set of cable inserts technical manual 11 LIST OF COMPONENTS 21 TABLE OF CONTENTS...

Page 22: ...22 TABLE OF CONTENTS...

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