Torque wrench is required for
assembly. Bolts that are too loose
or too tight may cause failure.
Seatpost Collar
Torque Specifications 2.8 Nm
The Thomson Seatpost Collar can generate high force. The bicycle frame and
seatpost might get damaged if the seatpost collar is overtightened.
Make sure that your frame seat tube is free of any burrs or peeled paint. You may
want to gently sand the frame to achieve a smooth finish.
Do not grease under bolt head or washer. Lightly grease the top of the seat tube.
Grease only the threads of the barrel nut.
US patent 587,633
SEATPOST COLLAR
Light Grease
If you lose the original Thomson bolt, barrel nut, or washer,
replace only with Thomson replacement parts.
Order Thomson replacement parts at your local bike store.
L.H. Thomson Co. Inc. 7800 N.E. Industrial Blvd.
Macon, Georgia USA 31216-7748
phone: 478.788.5052
www.bikethomson.com
If the Thomson Seatpost Collar is used with a carbon fiber frame or with a carbon
fiber seatpost, or both, orient slot in the seatpost collar 180º away from slot in
frame.
Collar slot rotated 180º
away from frame slot.
CARBON
Increase torque incrementally until the saddle no longer twists. Do not attempt to
fix a slipping or creaking seatpost by overtightening the seatpost collar. Diagnose
what is causing the seatpost to slip.
If your seatpost still slips after you have tightened to maximum torque,
follow these steps:
1. Remove excess grease on post and frame.
2. If post rocks or "chucks" in seat tube when there is
no collar pressure, seat tube is slightly large.
Use seatpost shim to eliminate slop.
SEATPOST COLLAR
Collar slot inline with frame slot.
CONVENTIONAL
2.8 Nm