Cane Creek Thudbuster LT Instructions

Thudbuster LT Instructions
INITIAL INSTALLATION
1. Note your current saddle height and fore/aft position to duplicate it with the Thudbuster.
THUDBUSTER LT INSTRUCTIONS
2. Remove your current saddle and seatpost.
INITIAL INSTALLATION
4. Grease the shim (if applicable) and seat pillar before installing. DO NOT lubricate seat tubes of
1. Note your current saddle height and fore/aft position to duplicate it with the Thudbuster.
2. Remove your current saddle and seatpost.
5. Insert the shim (if applicable) into the bicycle frame with the split aligned with the split in the
seat-tube.
3. Confirm your new Thudbuster seatpost (or shim) diameter is the same as your old seatpost.
6. Install the Thudbuster into the bicycle frame to approximately the correct height with the exten- (Thudbusters are available in six direct fit sizes between 25.4 and 31.6 mm.)
sion marks on seat pillar facing the front of the bicycle.
4. Grease the shim (if applicable) and seat pillar before installing. DO NOT lubricate seat tubes
7. Loosen the two saddle clamp bolts (front and rear) until the threads are barely engaging the
of Carbon frames (unless specified by the manufacturer).
barrel nuts (1 or 2 threads). Be sure grease is applied to the interface between the lower clamp
and cradle.
5. Insert the shim (if applicable) into the bicycle frame with the split aligned with the split in the
8. Place one rail of saddle in position between the upper and lower clamps. Then rotate saddle so seat-tube.
the other rail slips over the far edge of the upper clamp and into position in the rail grooves of the
6. Install the Thudbuster into the bicycle frame to approximately the correct height with the
lower clamp.
extension marks on seat pillar facing the front of the bicycle.
9. Begin to tighten the front and rear clamp bolts. The saddle tilt adjustment is controlled by these
two bolts. Check that the saddle tilt and fore/aft position of
7. Loosen the two saddle clamp bolts (front and rear) until the threads are barely engaging the
tightening. The front bolt can be adjusted by hand or hex wrench, but the rear bolt must be tight-
barrel nuts (1 or 2 threads). Be sure grease is applied to the interface between the lower
ened to 60 in*lb (6.8 N*m) with a 4 mm hex wrench. Be sure all the components of the clamp are
clamp and cradle.
installed as shown in section view. (Figure 1)
10. Adjust the saddle height if necessary. 8. Place one rail of saddle in position between the upper and lower clamps. Then rotate saddle
so the other rail slips over the far edge of the upper clamp and into position in the rail
NOTICE! The Thudbuster must be set-up with appropriate elastomers before riding (See below).
grooves of the lower clamp.
Maximum allowable rider weight is 250 lb (115kg).
9. Begin to tighten the front and rear clamp bolts. The saddle tilt adjustment is controlled by
SELECTING ELASTOMERS
these two bolts. Check that the saddle tilt and fore/aft position of the saddle are correct
before final tightening. The front bolt can be adjusted by hand or hex wrench, but the rear
The Thudbuster LT can be tuned for different weight riders and riding styles by combining the
bolt must be tightened to 60 in*lb (6.8 N*m) with a 4 mm hex wrench. Be sure all the com-
proper elastomers (spring rate) with the proper amount of preload (travel initiation load). Start
with the softest elastomer recommended for a given rider weight. The Thudbuster LT is shipped
ponents of the clamp are installed as shown in section view. (Figure 1)
with 2 each of grey, blue and black elastomers. You may desire to increase the stiffness by us-
10. Adjust the saddle height if necessary
ing harder elastomers. Never use softer elastomers than those recommended for your weight.
CHANGING ELASTOMERS NOTICE! The Thudbuster must be set-up with appropriate
elastomer before riding (See below). Maximum allowable
1. Using an 8 mm socket wrench and a 4 mm hex wrench, loosen the
locknut completely. rider weight is 250 lb (115kg).
2. Push the saddle forward slightly to remove upper white, nylon washer
and steel washer.
3. Remove the skewer bolt, keeping the lower nylon washer and steel
washer on the skewer.
Elastomer 1 Elastomer 2
4. Push the saddle further forward to remove the elastomers and coupling
washer.
#1 (XSoft) #1 (XSoft)
5. Select elastomers as required. When mixing different spring rate elasto-
#1 (XSoft) #3 (Soft)
mers, the order does not matter.
#1 (XSoft) #5 (Medium)
6. Grease the skewer bolt shaft and the top and bottom of each elastomer.
7. Place the coupling washer between the elastomers and place them into
#1 (XSoft) #7 (Firm)
the assembly.
#3 (Soft) #3 (Soft)
8. Insert the skewer bolt through the lowest elastomer and the coupling
#1 (XSoft) #9 (XFirm)
washer.
9. Push the saddle rearward while pushing the skewer through the top
#3 (Soft) #5 (Medium)
elastomer and hole.
#3 (Soft) #7 (Firm)
10. Re-install the nylon washer, steel washer and the locknut. DO NOT
#5 (Medium) #5 (Medium)
TIGHTEN.
#3 (Soft) #9 (XFirm)
11. Install the locknut so that one full thread is exposed beyond the locknut
#5 (Medium) #7 (Firm)
page 2).
#7 (Firm) #7 (Firm)
#5 (Medium) #9 (XFirm)
Cane Creek Cycling Components
#7 (Firm) #9 (XFirm)
ph: 828.684.3551 • fax: 828.684.1057 • web: www.canecreek.com • e-mail: info@canecreek.com
#9 (XFirm) #9 (XFirm)
Cane Creek Cycling Components | 355 Cane Creek Rd., Fletcher, NC 28732 | 800.234.2725 | info@canecreek.com | canecreek.com
POSSIBLE COMBINATIONS
(Recommended in Bold)
lb. range
<100
100-120
120-140
140-165
165-190
190-215
215-240
240-250
(post limit)
and 31.6 mm.)
1 Barrel nut (2)
2 Upper clamp
3 Saddle rails
4 Lower clamp
5 Cradle
6 Spherical washer (2)
7 Clamp bolt (2)
8 Adjustment knob
9 Seat pillar
kg. range
10 Minimum insertion line (100mm)
Rider Weight
<45
(Pounds)
45-54
SELECTING ELASTOMERS
Under 100
The Thudbuster LT can be tuned for different
100-120
weight riders and riding styles by combining the
54-64
120-140
proper elastomers (spring rate) with the proper
140-165 amount of preload (travel initiation load). Start with
64-75
the softest elastomer recommended for a given
165-190
rider weight. The Thudbuster LT is shipped with
190-215
75-86
2 medium and 1 each of soft and firm elastomers.
215-250
Extra soft and firm elastomers are available
Over 250
separately from www.canecreek.com. You may
89-98
*white (extra soft) and purple (extra hard) elastomers are available separately
from www.canecreek.com
desire to increase the stiffness by using firmer
98-109
elastomers. Never use softer elastomers than those
109-113
(post limit)
recommended for your weight.
• 355 Cane Creek Road • Fletcher, NC 28732
Rev. 11/2013
1
5
11
12
13
15
18
16
17
13
12
19
9
10
1
4
5
6
8
7
11 Lock nut
12 Steel washer (2)
13 Nylon washer (2)
14 Skewer bolt
15 Arm - LT, right (2)
16 Arm - LT, left (2)
17 Arm bolt, 20mm (6)
18 Coupling washer
19 Elastomer - LT (2)
Minimum Elasto-
mer Recommenda-
(kg)
tion
Under 45 white* / white*
45-54 white* / grey
54-64 grey / grey
64-75 grey / blue
75-86 blue / blue
89-98 blue / black
98-113 black / black
Over 113 Exceeds post limit
Rev.
6/2009
2
3
4
6
7
8
14
2
3
Grease
this
6
surface