White brothers cycling 2005AP-1 User Manual

AP-1 Installation instructions

INSTRUCTIONS

Congratulations! You have just purchased the
best performing suspension seatpost available.
The AP-1, with its proprietary air spring / air
damping technology, solid brass guide pin and
Teflon coated bushings, provides the ultimate in
adjustability, durability and performance. We
urge you to carefully read these instructions for
the maximum performance and product life,
and to help make your bicycling experience
more enjoyable and trouble free.

IMPORTANT CONSUMER SAFETY

INFORMATION

RIDING A BIKE IS DANGEROUS. NOT
PROPERLY MAINTAINING OR
INSPECTING YOUR BIKE IS EVEN MORE
DANGEROUS. IT IS ALSO DANGEROUS
NOT TO READ AND FOLLOW THESE
INSTRUCTIONS.

1. Do not ride with the seatpost extended
above the “max height” line marked on the post.
Do not scratch the seatpost to mark your
preferred seat height, instead, use a piece of
tape, if necessary.

2. Before each ride check to ensure that
the seatpost has the proper air in it, that the brass
guide pin and screw are securely tightened. Not
securing the brass guide pin can cause serious
and/or fatal injuries.

3. Always use genuine White Brothers
parts. Use of other aftermarket replacement
parts voids the warranty and could cause
structural failure to the seatpost.

PERFORMANCE TUNING

TABLE 1

Y our Weight Plush Action Firm Action

110 67 psi 73 psi
120 73 psi 80 psi
130 79 psi 87 psi
140 86 psi 93 psi
150 92 psi 100 psi
160 98 psi 107 psi
170 104 psi 113 psi
180 110 psi 120 psi
190 116 psi 127 psi
200 122 psi 133 psi
210 128 psi 140 psi
220 134 psi 147 psi
230 141 psi 153 psi

INSTALLATION

1. Install the saddle to the seatpost:
a. Remove the front and rear clamp
screws from the post clamp assembly.
b. Remove the upper clamp assembly
and grease the lower clamp surface,
clamp, washers, clamp screws and seat
clamp.
c. Install saddle and insert upper
assembly through the rear of the saddle
rails.
d. Hand tighten clamp screws and
adjust saddle orientation.
e. Tighten front and rear clamp screws
with the saddle in its preferred position.
Note: Do not over-tighten clamp screws.
When adjusted correctly, make sure the
clamp screws protrude from the seat
clamp pins. If the screws do not protrude
from the seat clamp pins, you must use
longer screws.

Prior to installing the seatpost, you should
adjust the air pressure to fit your weight and
riding style. Use a high-pressure shock pump
with a standard schrader valve fitting to set the
pressure in the post according to the figures in
Table 1. W ARNING: DO NOT test the post by
pushing the bottom of the post against the floor
or any hard surface, since this may damage the
schrader valve and air cap.

2. Use a file to deburr the inside of the

bicycle frame's seat tube. Scoring or
scratching to the outside of the
seatpost's outer tube may cause
premature failure.

3. Install the seatpost in the bicycle seat

tube. NOTE: Do not ride with the
seatpost extended above the “max
height” line marked on the post. Tighten the
binder bolt or quick release to the
Manufacturer’s specifications.

INSTALLATION CONTINUED

4. WARNING: If your seatpost does not fit in your
bicycle's seat tube, you must use shims to ensure a proper and
safe fit. Shims are available at your local bike shop. The AP­1 comes in either 26.8 mm or 27.2 mm sizes. These sizes will
fit most bikes by themselves or with shims.

TUNING TIPS

- After ride testing the initial pressure setting, you can adjust
the pressure to soften or firm up the action if necessary.
NOTE: Even a few psi can have a noticeable affect.

- The AP-1 is designed so that the damping adjusts
automatically with the air pressure, so the only tuning you need
to do is adjust the air pressure.

- Excessive pressure results in an uncomfortable ride and
stresses the top out bumper of the post, so it is better to
progressively increase the pressure setting until the right level
is reached instead of over inflating and then reducing pressure
later.

- NOTE: A degree of bushing friction is normal during the
initial break in period. The action of the post will become
smoother after the first two to five hours of riding.

AP-1 AIRPOST

Pin Screw

Brass Guide Pin

Max Height Line

Schrader Valve

MAINTENANCE

WARNING: before performing any maintenance on the
seatpost, you must DEFLATE the post. Failure to deflate
the post may result in damage to the seatpost and may
cause serious and/or fatal injuries.

-Under normal circumstances the Airpost does not require
lubrication by the user. If an unusual degree of friction
develops, the dust boot can be raised and a small amount of
lubricant can be wiped on the stanchion shaft. Lubricant may
also be applied through the guide pin hole with the guide pin
removed (see below). Only a light, non-lithium fork grease
such as Bu zzy's Sli ck Honey should be used.

-If excess rotational play develops, the brass guide pin can be
replaced without disassembly of the post. WARNING: The
post must be removed from the bike and all of the air must be let
out of the post by pressing the valve core. Use a 3mm allen key
to loosen the screw on the backside of the brass guide pin.

Failure to deflate the post may result in damage to the post
and may cause serious and /or fatal injuries. NOTE: The

screw in the brass pin is held in place with loctite, and may
require some force to break free. After removing the screw,
press the brass guide pin out and install a new brass pin by
lining the slot in the stanchion with the hole in the outer tube.
WARNING: When replacing the brass guide pin, loctite must
be used to keep the screw tight. Replacement guide pins and
other parts are available through your local bike shop, or
contact White Brothers at the address to the right.

W ARRANTY

White Brothers warrants this product for a period of one
year from original date of purchase to be free from defects
in materials or workmanship. White Brothers will repair
or replace, at the option of White Brothers, any product that
is found to be defective in materials and workmanship.
This warranty is the sole and exclusive remedy. White
Brothers shall not be held liable for any direct, special, or
consequential damages. This warranty does not apply to
products that have not been properly installed and adjusted
according to the installation and tuning instructions. This
warranty does not cover any product that has been subject
to misuse. This warranty does not apply to damage to the
product caused by a crash or abuse of the product or any
other circumstances in which the product was subject to
forces or loads beyond its design. This warranty does not
cover parts that are subject to wear and tear as a normal part
of usage, this includes, but is not limited to, wear on the
brass guide pin, bushing, or top out bumper. The warranty
does not cover annodization damage or modifications to
the product. PROOF OF PURCHASE IS REQUIRED.

WHITE BROTHERS CYCLING

A division of Eko Sport, Inc.

580 N. Westgate Dr., Grand Junction, CO 81505 USA

[phone] Fax [phone]

www.whitebrotherscycling.com