Pacific Cycles FROG - Manual (Page 8)

riese und müller GmbH Frog Manual
· If the lever can be made to pivot around in a circle, you can’t guarantee that the seatpost, wheels or stem height-adjustment
is secure. You must re-open the quick-release and increase the clamping tension. Do this by screwing the adjusting nut on
the other end of the quick-release half a turn clockwise.
· Repeat the closing procedure and check that the lever is secure. If the lever can’t be rotated, it’s clamping properly.
· Like all other clamping parts follow the rule: as few clamping force as possible, as much as necessary. To high clamping forces
could lead to damage .
Tip
: Components secured by quick-release are more susceptible to theft. Secure your wheels and if necessary saddle with an extra
lock, if you’re leaving your Frog unattended.
PAGE 18, Stem hinge lever adjustment
How do I use the lever on the stem hinge?
When it’s closed, the lever of the stem closure mechanism should point straight up. You should be able to close the lever without
great force, and when it’s closed, there should be no play in the hinge. If this isn’t the case, the closure mechanism needs
adjusting. The lever shouldn’t be adjusted too tight, either: this can bend the closing lever and will lead to play when the joint is
closed. A technically-minded person can adjust the hinge mechanism as follows:
1. Close the hinge and undo locknut
A
2. Undo 2.5mm hex bolt B
3. Open the hinge
4. The mechanism is adjusted by turning the tension rod
C. Turning clockwise makes it stiffer, anticlockwise makes it softer.
Because locknut A is self-locking, the tension rod can be rotated by turning the locknut. The tension rod C is also fitted with
a 4mm hex socket, which can be used for adjustment.
5. Close the hinge
6. Close the 2.5mm hex bolt
B gently (1 Nm torque)
7. Do up the locknut A gently (3-4 Nm torque), holding the tension rod C in place with the 4mm hex key.
PAGE 19, The rear swing-arm catch
The rear swing-arm is attached to the frame when it’s unfolded with a black plastic catch. You should adjust the position of this
catch so that it engages automatically when you unfold the Frog, and so that there’s no play.
To adjust it, you must loosen the locknut (arrowed on the diagram) inside the rear swing-arm beam. The catch can then be pushed
inwards or outwards. Finally, re-tighten the locknut with a torque of 4-6Nm.
The M6 x 12 bolt is secured into the main frame with threadlock adhesive. The bolt should be screwed in just far enough that
when the catch is engages, it’s under slight tension inwards.
If the tension is no longer sufficient for the catch to engage, you need to pre-tension the catch: fold the rear swing-arm slightly
forwards, remove the elastomer and bend the plastic catch firmly inwards for a few seconds.
PAGE 20, The front swing-arm catch
When you unfold the Frog the front suspension spring engages in the front swing-arm catch. This catch consists of a metal hook,
which pivots on a shaft mounted on the fork crown, and it’s kept in tension with a small spring. If this hook doesn’t move or if it
is not being pulled back properly by the spring, the two fork clamping bolts may be done up too tightly, or the spring may have
failed. In this case, please ask your dealer to help. The hook should engage in the last turn of the spring and should fix it in
position. To fold, press down on the suspension catch: this moves the hook clear of the spring.
The plastic cap on which the end of the spring rests is fixed in place with an asymmetrically-placed Allen bolt. The cap should be
fixed so that it is central with the fork. The fixing bolt should be tightened to 3-4 Nm.
If the catch hook doesn’t engage cleanly in the first turn of the spring, the spring must be rotated. Loosen the fastening at the
bottom of the spring with a long 5mm hex key, which you should insert from the free end of the spring. Only turn the spring far
enough to ensure that the top turn of the spring ends in the seven-o-clock position, and engages the catch hook without play.
The spring must be carefully lined up with the black plastic cap so that it slides easily onto the cap and engages with the catch.
Finally re-fix the spring in place with a tightening torque of 6-8 Nm.
If the fork spring doesn’t engage play-free, both the spring position and that of the black plastic cap can be adjusted. Exact
adjustment can require some experience, and any problems should be referred to your Frog dealer.
PAGE 21, Brakes
The Frog is equipped with particularly powerful brakes. Braking distance is, however, very much determined by the rider’s skill, and
can be improved with practice. Weight is transferred from the rear to the front when you brake, and loading on the rear wheel
reduces. This is why braking distance is determined first by the tendency of the bike to flip you over the bars, and only as a
second order effect by the limits of adhesion of the tyre. This problem becomes particularly acute when descending steeply. If you
use full braking, ensure that your weight is placed as far back as possible.
The Frog is available in two different brake options: either with a front and rear V-brake and freewheel or with additional coaster
brake.