BOB QR Series Instruction Manual

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.
 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)
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.
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.
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.
IMPORTANT: highest strength requires
considerable pressure to close the QR lever
when it is properly adjusted and tightened.
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.
Quick Release instructions
[phone] www.bobgear.com
13501 South Ridge Drive Charlotte, North Carolina 28273
WARNINGS
BOB QR MODELS
INstallation
OMA34B
BOB QR Anatomy
Conical
Springs
Retaining
Screw
Lock
Washer
Flat
Washer
Bobbin
Lever
Rod
Adjusting Nut
Lock
Washer
Flat
Washer
Retaining
Screw
Bobbin
FIG.1
QR lever perpendicular to drop out face
QR lever closed
Measuring threaded QR rod extending past drop
out face (QR must be in the closed position)
FIG.2
FIG.3
FIG.4
A B C D
QR Model Rod Threaded Dropout Inside Allowable Dropout
Length Length Dimension Outside Dimension
BOB QR 165mm* 32mm 126.5 - 140mm** 140 - 156mm
BOB 145 QR 175mm* 35mm 145mm** 145 - 164mm
BOB Santana QR 190mm* 30mm 160mm** 165 - 180mm
*Measurement is with QR lever in closed position
**Dropout inside dimension (C) to measure the same as bicycle hubs axle over locknut dimension.

IMPORTANT: If your QR rod measurement (see above section, step
"3") exceeds 3/4 inch (19mm), proceed with the following:
If your measurement is 25 mm (for example), subtract 19 mm (max.
length) to determine length of rod to be cut. (25 - 19 = 6mm.) As a
general rule, it is recommended to maximize the length of the rod.
1) Thread a 5mm x .8mm nut or threading die onto the QR rod past
the area to be cut. (after trimming the QR rod, the nut / die will clean
up the threads when it is removed).
2) Clamp the QR rod in a vise, being careful not to damage the
threads, Fig. 5.
3) Measure from the tip of the QR rod and cut the rod with a metal
cutting saw.
4) Using a file, shape
the end of the rod into
a conical shape.
5) Remove the nut (or
die) and verify the QR
rod has been cut to
the proper length by
repeating steps 2 and
3 in the previous
section then complete
QR installation by
following steps 4
through 7 in previous
section.
Now that the BOB QR is installed, attach the trailer to the bike. To
do this correctly, follow the steps below:
Attach and detach the trailer ONLY when it is in a straight line with
the bike. You can bend the fork otherwise. It is easiest to attach and
detach trailer when it is unloaded.
1) The stainless steel
pivoting BOBBINS on the
quick release skewer are
asymmetrical as shown
in Fig. 1. This
asymmetrical design
allows the BOBBINS to
be reversed, allowing for
a variance of
approximately 13mm in
outside dimensional
span of the bike's
dropouts.
2) With the bike stabilized and
the trailer unloaded, check the
fit between the fork hooks and
the slots of the BOBBINS. It is
easiest to do this with the bike
in the upright-position and trailer
straight behind the bike. Stand
on the left side of the bike facing
towards the trailer. Allow the
bike seat to rest against your
hip. Bend at the hips and lift
trailer with both hands, Fig. 6,
and place the fork hooks on the
quick release BOBBINS. If the
hooks do not fit into the BOBBIN
slots by slightly expanding or
compressing the fork, it will be
necessary to reverse the
BOBBINS. Fig. 7 shows a
situation where the hooks do not
fit easily and the BOBBINS need
to be reversed.
3) With the quick release installed,
and using a 4mm Allen wrench,
remove the BOBBIN retaining
screws, Fig. 1, on both the left
and right sides. Remove the
BOBBINS and reverse them
noting the position of the lock and
flat washers.
4) With the BOBBINS reversed, reinstall the retaining screws and
lock washers. Tighten the retaining screws securely.
5) Attach the trailer by aligning the slots of the BOBBINS with the
slots in the fork hooks. Fig. 8 shows the fork hooks correctly installed
on the BOBBINS.
6) With the trailer hooks
placed on the bobbins,
insert the pin in the hole
in the front edge of the
hook. Slide the pin under
the bobbin and into the
hole in the back edge of
the hook. Rotate the pin
up, toward the button head
post on the hook. To
secure the pin, it is
necessary to press it
downward and toward the
hook. When properly
installed, the pin fits
between the hook and the
head on the button head
post, as shown in Fig. 9.
The rubber lanyard retains
the pin when not installed.
IMPORTANT: The pins are CRITICAL to keeping the trailer attached
to the BOB Quick Release. Inspect pins for proper installation every
time you ride. Incorrectly installed pins can allow the trailer to detach
from the bicycle and cause a severe accident. Please see your dealer
or call BOB if you do not understand the pin installation procedure.
BOB Trailers Inc. takes pride in its workmanship and strives to
manufacture the best products possible. Therefore, we warranty our
BOB QR against defects in material and workmanship subject to the
conditions listed below. Since no product is indestructible, it does
not cover defects attributable to or resulting from normal wear, abuse
or alteration.
 Components are warranted for one year.
 Warranty is only valid for the original purchaser.
 Proof of purchase is required to exercise this warranty.
 Labor and transportation are not included.
 Normal wear, neglect, abuse, accidents, improper assembly or
maintenance, or the installation of parts or accessories not compatible
with the original intended use of the trailer, as sold, are not covered
by this warranty.
 Warranty claims must be made through an authorized dealer.
 This warranty is limited to the replacement of the defective part.
BOB Trailers shall in no event be responsible for consequential or
special damages.
 This limited warranty is the only express or implied warranty
applicable to BOB Trailers. Any implied warranties, including warranties
of merchantability and fitness shall be limited in scope and duration
in accordance with this limited warranty.
Caution
Limited warranty
TRIMMING The BOB QR
trailer attachment
OMA34B
QR with die in place and clamped for cutting
Correct position for trailer attachment
Bobbin spacing not aligned with hook
Fork hooks correctly installed
Pin Correctly Installed
Hook
Bobbin
Lanyard
Button Head Post
Pin
FIG.5
FIG.6
FIG.7
FIG.8
FIG.9