User manual GIANT BICYCLES EXPEDITION BIKES-2001

[. . . ] Drop [mm. ] Chain stays [mm. ] Fork Rake [mm. ] Trail [mm. ] Wheel Base [mm. ] Rear Wheel Travel M - 49 cm. 590 540 72 degrees 70 degrees 22 425 43 78 1070 3. 2" XL - 60 cm. NRS TM TM rear suspension system. NRS (No Resonance System) bikes are equipped with dedicated RockShox SID rear shocks. These SID shocks have separated "positive" air chambers (spring) and "negative" air chambers (spring). [. . . ] Push gently one of the pedals, like you would do during real riding (while keeping the front wheel locked with the front brake). Shift your body weight gently from the saddle to the front fork and try to dismount without causing too much movement in the bike. TM REMEMBER: FOR MAXIMUM EFFICIENCY THE NRS SYSTEM SHOULD ALWAYS BE SET UP WITH ZERO "SAG" !!!Increase the pressure of the positive spring in repetitive steps of 5 or 10 psi. following the points 7, 8 and 9 until "zero-SAG" is reached. - Pag. Here's the final check: ride the bike with TM NRS system with a relatively high RPM on a nicely paved road. In case the bike tends to "bob" with small motions, then increase the positive spring by another 10 psi. Now try again and the result should be, that the bike does not "bob" anymore, whether sitting on the saddle or climbing or sprinting out of the saddle. Note: the air pump which is supplied free of charge with the bike is equipped with an escape valve (the black knob below the gauge) to de-pressurise the shock when the pressure is too high. Note: the shock setting should be checked regularly (at least every 2 weeks). Of course the simplest way to check is the asphalt paved road test with high RPM (see point no. Note: by putting the pump on the shock, the valve is opened and always some air pressure will be lost (between 10 and 15 psi. ). A small amount of air can be heard escaping, this is between the valve and the gauge. Note: when the shock is set up for the first time and has to be inflated from 0 psi. , the temperature in the air chamber will rapidly rise. Especially in winter when the bike is taken outside, the air pressure setting has to be checked again outside. Once you understand the routine of correctly setting up the NRS suspension system, and have experienced what the bike can do for you (MORE POWER), you can then try to slightly modify the air shock setting to your own personal needs. Riding tests can be made with the pressure of the negative spring under two conditions: A. always maintain the same big difference (same ratio) between positive and negative spring like the final setting in step 11, and B. By adjusting the air pressure, the RockShox SID rear shocks can be tuned to your particular weight, riding style and terrain. This shock has been designed to be tuned for soft, plush descent riding, for the long climbs, or a combination of both. Different riders require different performance characteristics from their suspension. Heavier or more aggressive rider needs a stiffer compression damping (spring), a higher air pressure. [. . . ] SAG is the amount of suspension pre-compression that is required to compensate for the riders (and luggage) weight and allow the bicycle to perform as it was designed to. To measure SAG, install a zip-tie on one of the stanchions (upper tubes) of the front fork so that it is flush against the top of the lower leg assembly. Sit on the bike with normal riding apparel (and luggage), then step off your bike and measure the bottom of the zip-tie to the top of the lower leg assembly. This can be checked in the same way as measuring SAG, but without any air inside the air chamber in the right hand fork leg: push the pin of the Schrader valve, so all air can escape. [. . . ]