Thudbuster - Cane Creek

Thudbuster LT Instructions
Rev.
6/2009
Rev. 11/2013
1
INITIAL INSTALLATION
2
1. Note your current saddle height and fore/aft position to duplicate it with the Thudbuster.
2. Remove your current saddle and seatpost.
THUDBUSTER LT INSTRUCTIONS
3
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.
areinto
available
in six direct
between 25.4
31.6height
mm.) with the exten6. Install (Thudbusters
the Thudbuster
the bicycle
framefittosizes
approximately
the and
correct
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. Loosenofthe
two saddle
(frontby
and
until the threads are barely engaging the
Carbon
frames clamp
(unlessbolts
specified
therear)
manufacturer).
barrel nuts (1 or 2 threads). Be sure grease is applied to the interface between the lower clamp
and 5.
cradle.
Insert the shim (if applicable) into the bicycle frame with the split aligned with the split in the
seat-tube.
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 grooves of the
Install the Thudbuster into the bicycle frame to approximately the correct height with the
lower6.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.
Checkthe
thattwo
thesaddle
saddleclamp
tilt and
fore/aft
of until the threads are barely engaging the
7. Loosen
bolts
(frontposition
and rear)
tightening.
Thenuts
front(1bolt
can
be adjusted
bygrease
hand or
wrench,
the rear
bolt must
tightbarrel
or 2
threads).
Be sure
is hex
applied
to thebut
interface
between
thebe
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
and in
cradle.
installed clamp
as shown
section view. (Figure 1)
4
5
and 31.6 mm.)
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.
11
12
6
13
15
7
18
16
8
14
17
13
12
19
9
10
8. Place
one railheight
of saddle
in position between the upper and lower clamps. Then rotate saddle
10. Adjust
the saddle
if necessary.
theThudbuster
other rail slips
over
far edge
the upper clamp
and into
position
in (See
the railbelow).
NOTICE!so
The
must
bethe
set-up
with of
appropriate
elastomers
before
riding
grooves
of
the
lower
clamp.
Maximum allowable rider weight is 250 lb (115kg).
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.
Theforfront
bolt can
be adjusted
by hand
hex wrench,
but thethe
rear
The Thudbuster LT can
be tuned
different
weight
riders and
ridingorstyles
by combining
bolt must be
tightened
60 the
in*lbproper
(6.8 N*m)
withofa preload
4 mm hex
wrench.
Be sure
all the
comproper elastomers
(spring
rate)to
with
amount
(travel
initiation
load).
Start
with the softest
recommended
giveninrider
weight.
Thudbuster
LT is shipped
ponentselastomer
of the clamp
are installedfor
as a
shown
section
view.The
(Figure
1)
with 2 each of grey, blue and black elastomers. You may desire to increase the stiffness by us10. Adjust
the saddle
height
necessary
ing harder
elastomers.
Never
useif softer
elastomers than those recommended for your weight.
1
2
9.
NOTICE!
The Thudbuster must be set-up with appropriate
CHANGING
ELASTOMERS
beforewrench
riding (See
Maximum
1. Usingelastomer
an 8 mm socket
and abelow).
4 mm hex
wrench, allowable
loosen the
weight is 250 lb (115kg).
locknut rider
completely.
2. Push the saddle forward slightly to remove upper white, nylon washer
and steel washer.
POSSIBLE COMBINATIONS
3. Remove the skewer bolt, keeping
the lower
nylon washer and steel
(Recommended
in Bold)
washer on the skewer.
1 Elastomer
2 to remove thelb.
range
kg.
4. Push theElastomer
saddle further
forward
elastomers
andrange
coupling
washer. #1 (XSoft)
#1 (XSoft)
<100
<45
5. Select elastomers as required. When mixing different spring rate elasto#1 (XSoft)
#3 (Soft)
100-120
45-54
mers, the order does not matter.
(XSoft)
#5 shaft
(Medium)
6. Grease#1the
skewer bolt
and the top and bottom of each elastomer.
#1 (XSoft)
#7 (Firm)
7. Place the
coupling washer
between the elastomers and place them into
the assembly.
#3 (Soft)
#3 (Soft)
120-140
54-64
8. Insert the skewer bolt through the lowest elastomer and the coupling
#1 (XSoft)
#9 (XFirm)
washer.
#3 (Soft)
#5 (Medium)
140-165
64-75
9. Push the
saddle rearward
while pushing the skewer
through the
top
elastomer#3and
hole.
(Soft)
#7 (Firm)
10. Re-install the nylon washer, steel washer and the locknut. DO NOT
#5 (Medium)
#5 (Medium)
165-190
75-86
TIGHTEN.
(Soft)
(XFirm)
11. Install#3
the
locknut so#9
that
one full thread is exposed beyond the locknut
page 2).
#5 (Medium)
#7 (Firm)
190-215
89-98
#7 (Firm)
#7 (Firm)
215-240
98-109
#9 (XFirm)
3
5
6
6
Grease
this
surface
8
7
1 Barrel nut (2)
11 Lock nut
2 Upper clamp
12 Steel washer (2)
3 Saddle rails
13 Nylon washer (2)
14 Skewer bolt
4 Lower clamp
5 Cradle
15 Arm - LT, right (2)
6 Spherical washer (2)
16 Arm - LT, left (2)
7 Clamp bolt (2)
17 Arm bolt, 20mm (6)
8 Adjustment knob
18 Coupling washer
9 Seat pillar
19 Elastomer - LT (2)
10 Minimum insertion line (100mm)
Rider Weight
(Pounds)
(kg)
Minimum Elastomer Recommendation
SELECTING ELASTOMERS
UnderThe
100ThudbusterUnder
45be tuned forwhite*
/ white*
LT can
different
100-120
45-54
white* / grey
weight riders and
riding styles by combining
the
120-140
54-64
grey
proper elastomers
(spring rate) withgrey
the /proper
140-165
64-75
grey /Start
blue with
amount of preload
(travel initiation load).
the softest elastomer
for a/ blue
given
165-190
75-86 recommendedblue
rider weight. The
Thudbuster LT is shipped
with
190-215
89-98
blue / black
2 medium and 1
each of soft and firm
elastomers.
215-250
98-113
black
/ black
elastomers
are available
Over Extra
250 soft and firm
Over
113
Exceeds post limit
separately
from
www.canecreek.com.
You
may
*white (extra
soft) and purple
(extra
hard) elastomers are available
separately
from www.canecreek.com
desire to increase the stiffness by using firmer
elastomers. Never use softer elastomers than those
recommended for your weight.
(XFirm)
Cane #9
Creek
Cycling Components
• 355 Cane Creek Road • Fletcher, NC 28732
ph: 828.684.3551
• fax: 828.684.1057 • web: www.canecreek.com • e-mail: [email protected]
#9 (XFirm)
#5 (Medium)
#7 (Firm)
4
#9 (XFirm)
240-250
(post limit)
109-113
(post limit)
Cane Creek Cycling Components | 355 Cane Creek Rd., Fletcher, NC 28732 | 800.234.2725 | [email protected] | canecreek.com
CHANGING ELASTOMER
1.
Using an 8 mm socket wrench and a 4 mm hex wrench, loosen the locknut completely.
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.
4.
Push the saddle further forward to remove the elastomers and coupling washer.
5.
Select elastomers as required. When mixing different spring rate elastomers, the order does not matter.
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 the assembly.
8.
Insert the skewer bolt through the lowest elastomer and the coupling washer.
9.
Push the saddle rearward while pushing the skewer through the top elastomer and hole.
10.
Re-install the nylon washer, steel washer and the locknut. DO NOT TIGHTEN.
11.
Install the locknut so that one full thread is exposed beyond the locknut (figure 2). Additional tightening will add preload
Thudbuster LT Instructions
Rev.
6/2009
PRELOAD to
ADJUSTMENT
the assembly. (See page 2).
The Skewer and locknut can be used to add additional preload to the assembly on the Thudbuster LT. While there must be at least one
thread showing beyond the lock nut, additional turns of the nut can add preload. Additional preload will increase the force required to
initiate
andand
willlocknut
minimize
for small
bumps.
the table
illustration
set up
preload.
The valThetravel
Skewer
canthe
be suspension
used to add travel
additional
preload
to theRefer
assembly
on theand
Thudbuster
LT.below
Whiletothere
must
be at least
ues in the table are the thread length beyond the end of the locknut to achieve the preloads in the column heading for a given elastomer
onecombination.
thread showing beyond the lock nut, additional turns of the nut can add preload. Additional preload will increase the force
spring
required to initiate travel and will minimize the suspension travel for small bumps. Refer the table and illustration below to set up
preload.DO
TheNOT
values
in the100
table
are the(45
thread
length beyond
the endexposed!
of the locknut to achieve the preloads in the column heading
NOTICE!
exceed
pounds
kg) preload
or 7 threads
for a given elastomer spring combination.
PRELOAD ADJUSTMENT
NOTICE! DO NOT exceed 100 pounds (45 kg) preload or 7 threads exposed!
Additional Preload
Additional Preload
50 lbs (23 kg) 75 lbs (34 kg) 100 lbs (45 kg)
Minimum Elastomer Recommendation
0.06” (1.6 mm) 0.14” (3.5 mm) 0.22” (5.6 mm) ---25 lbs (11 kg) 50 lbs (23 kg)
75lbs (34 kg) 100 lbs (45 kg)
25 lbs (11 kg)
Grey/Grey
Blue/Blue
#3 | #3
Black/Black
#5 | #5
#7 | #7
0.04” (1.0 mm)
0.08” (2.1 mm)
0.13” (3.3 mm) 0.19” (4.7 mm)
0.06” (1.6 mm)
0.14” (3.5 mm)
----
0.04” (1.0 mm)
0.07” (1.7 mm)
0.22” (5.6 mm)
0.08” (2.1 mm)
0.13” (3.3 mm)
0.19” (4.7 mm)
0.03” (0.8 mm)
0.07” (1.7 mm)
0.11” (2.7 mm)
0.15” (3.8 mm)
0.03” (0.8 mm)
0.8mm Min. (1 thread)
0.11” (2.7 mm) 0.15” (3.8 mm)
5.6mm Max. (7 threads)
MAINTENANCE
1. The pivot washers should occasionally be lubricated with a light oil.
2. The skewer
and
elastomers
lubricated periodically
with
grease to the shaft of the skewer and to the ends of
1.
The
pivot
washers must
shouldbeoccasionally
be lubricated
withgrease.
a light Apply
oil.
the elastomers. The elastomers must be removed and reassembled as explained in the changing elastomers section of the instructions.
2.
The skewer and elastomers must be lubricated periodically with grease. Apply grease to the shaft of the skewer and to the
ends
of in
themuddy
elastomers.
The elastomers
must
be removed
reassembled
as explained
in the changing
elastomers
NOTICE! If you ride
conditions,
using either
a fender
or theand
Cane
Creek Crudbuster
neoprene
boot will protect
the pivots and
the instructions.
extend the lifesection
of yourofseatpost.
MAINTENANCE
NOTICE!
Thudbuster
designed
to absorb
bumps
should
still stand
up when
encountering
obstacles
NOTICE!
If you rideseatposts
in muddy are
conditions,
using
either asmall
fender
or theonly.
CaneYou
Creek
Thudglove
neoprene
boot
will protect large
the pivots
on the road or trail.
and extend the life of your seatpost.
WARRANTY
NOTICE! Thudbuster seatposts are designed to absorb small bumps only. You should still stand up when encountering large
Thudbuster
seatposts
areor
warranted
against defects in materials or workmanship for one year from the date of purchase. This warranty
obstacles
on the road
trail.
applies to the original owner only. At their discretion, Cane Creek Cycling Components will repair or replace any defective seatpost
WARRANTY
improper adjustment, lack of maintenance, crashes, or other conditions
judged by Cane Creek Components to be abnormal, excessive,
or improper.
It
is
mandatory
that
a
Return
Authorization
Number
(RA#)
is
(by calling
return is made.
Thudbuster seatposts are warranted against defects in materials or received
workmanship
for oneCane
year Creek)
from thebefore
date ofany
purchase.
Additionally, a dated Proof of Purchase must accompany the seatpost when returned.
This warranty applies to the original owner only. At their discretion, Cane Creek Cycling Components will repair or replace
any defective seatpost with the same or comparable model. This warranty is void if the seatpost is damaged as a result of
abuse, alterations, modifications, improper adjustment, lack of maintenance, crashes, or other conditions judged by Cane
Creek Components to be abnormal, excessive, or improper. It is mandatory that a Return Authorization Number (RA#) is
received (by calling Cane Creek) before any return is made. Additionally, a dated Proof of Purchase must accompany the
seatpost when returned.
Cane Creek Cycling Components | 355 Cane Creek Rd., Fletcher, NC 28732 | 800.234.2725 | [email protected] | canecreek.com