BOB QR Series Quick Release Instructions

BOB is a company that produces high quality products, which
encourage a healthy, outdoor, car-free lifestyle. In addition to trailers,
we also make full suspension jogging strollers. See www.bobgear.com
for our complete line of products.
W A R N I N G S
• BOB trailers can be attached to bicycles with wheel sizes between
20" and 28". Please see the Trailer/Bike Compatibility chart at the
end of your trailer manual to determine which trailer is compatible
with your bike. If you have questions about your wheel diameters or
trailer compatibility with your bicycle, consult your bicycle dealer or
call us at BOB.
• Our trailers are intended to carry cargo only.
• Do not carry children or live animals.
• Cargo capacity: 70 pounds (32 kilograms)
• BOB QR must be correctly sized to your specific bicycle to insure
safe operation.
• SPEED LIMIT: 25 mph (40 kph) A bike with trailer attached, steers
and feels different. Ride cautiously. Speed wobbles (and loss of
control) can occur if speed limit is exceeded.
• Some variables that can affect the control of your bike and trailer:
improper installation of BOB QR / improper installation of trailer fork
retaining pins / improper installation of trailer fork to YAK & IBEX
frame / road conditions / wind speed and direction / cyclist's skill
level / weight of rider relative to the amount of weight in trailer /
center of gravity of cargo / integrity of all wheels (proper spoke
tension and bearing adjustment)
A
Rod
QR Model
Length
BOB QR 165mm*
BOB 145 QR 175mm*
BOB Santana QR 190mm*
*Measurement is with QR lever in closed position
**Dropout inside dimension (C) to measure the same as bicycle hub’s axle over locknut dimension.
Flat
Lock
Washer Washer
Retaining
Screw
Bobbin
FIG.1

BOB QR Anatomy

INstall ation
IMPORTANT: Bicycle manufacturers use a large variety of
components and materials to build their bikes and the thickness of
the rear wheel dropouts vary greatly. It is extremely important to
have your BOB QR sized to the appropriate length and correctly
installed on your bike. Please note the dropout inside dimension
assumes that the dropouts are firmly pressed against the hub axle
over locknuts, alleviating any gap between the two and allowing for
an accurate measurement. The QR's primary role is to secure the
rear wheel to your bike, and secondarily, it is the structural link
between the bike and trailer. For a QR to work properly, the QR rod
must extend past the dropout on the derailleur side by a minimum
of 3/8 inch (10mm) and maximum of 3/4 inch (19mm). Fig. 1 shows
the anatomy of the BOB Quick Release.
Q u i c k R e l e a s e i n s t ru c t i o n s
BO B Q R M O D E L S
B C
Threaded Dropout Inside
Length Dimension
32mm 126.5 - 140mm**
35mm 145mm**
30mm 160mm**
Lever
Rod
Conical
Springs
(800) 893-2447 www.bobgear.com
13501 South Ridge Drive Charlotte, North Carolina 28273
1) Remove the bike's rear QR. Remove the adjust nut and one
conical spring from the BOB QR and install into the rear wheel axle
hole on the non-derailleur side.
2) With the QR cam lever in the closed position (note that "CLOSE"
is visible on the cam lever) push the quick release through the bike's
rear axle until it contacts the bike frame dropout face.
3) Check for a
minimum of 3/8 inch
(10mm) and
maximum 3/4 inch
(19mm) of threaded
rod extending past
the drop out face,
Fig. 2.
IMPORTANT: If the
amount of rod
extending past the
dropout face is less
than 10mm, you will
need a longer quick
release. Please consult the BOB Quick Release Model table to find
the correct QR for your bike. If the amount of rod is greater than
19mm, see the next section: “TRIMMING THE BOB QR". If you do
not understand this section, contact your local bike dealer or call
BOB for help.
D
Allowable Dropout
Outside Dimension
140 - 156mm
145 - 164mm
165 - 180mm
Adjusting Nut
Flat Lock
Washer Washer
Retaining
Screw
Bobbin
7) If you do not feel this
resistance turn the quick
release lever back to the
adjusting position (Fig. 3) and
tighten the QR adjust nut by
hand (no tool necessary) one
or two more turns in the
clockwise direction. Proper
adjustment requires 80 to 105
inch - pounds of torque to move
the lever to the fully "CLOSED"
position.
FIG.2
Measuring threaded QR rod extending past drop
out face (QR must be in the closed position)
4) Install the 2nd conical spring onto the QR
rod (small hole first) and then the adjust nut.
5) With the QR lever perpendicular (at a 90
degree angle) to the frame, Fig. 3, tighten
the adjusting nut clockwise until it is snug
against the dropout face.
6) Move the QR lever until "CLOSE" is visible
on the lever, Fig. 4, and it is parallel to the
frame.
FIG.3
QR lever perpendicular to drop out face
IMPORTANT: highest strength requires
considerable pressure to close the QR lever
when it is properly adjusted and tightened.
FIG.4
QR lever closed
OMA34B