RS4 INSTRUCTION MANUAL
Contents
1. REGULATING THE ROTOR To correctly align the Rotor it is important that the tires are properly inflated and that the bicycle is standing in a horizontal position on a level surface with the right crank pointed towards the floor creating a 90 angle Position the system by pushing or pulling the right crank against the M6 screw raising or lowering the eccentric so that the reference point inside triangle coincides with the triangle on the spider wheel In order to check the set regulation point position the right crank pointed downwards again There are five possible regulation points with the triangle being the third always counting from the top We recommend this middle regulation however positioning depends on each users physical characteristics form of pedaling etc With lower points more comfort during climbs lower muscular requirement will be achieved while with the higher points the cyclist will achieve higher top speeds requiring more muscular effort Usually XC and TT competitors prefer using the system regulated with the reference triangle positioned in the middle or at one point above the triangle while road cyclists prefer to ride with the system regulated at the reference triangle or one point below the triangle FASTENING THE ROTOR Carefully turn the right crank in the same direction as the pedaling motion clockwise as far as the M6 screw permits without changing the previously set regulation point2. N The natural way of pedaling ae aN i LEFT CUP RS4 INSTRUCTION MANUAL Together with your Rotor Cranks BB and chainrings you will find in the box Pp j D RS4 instruction manual DP Fj AJ warranty sheet with the serial oe number thread lock adhesive F43 medium strength bolts amp nuts for the chainrings two washers for the pedals M6 bolt Required Tools for assembly Allen key Hex wrench 5mm and 8mm Standard bottom bracket tool Adjustable wrench or 32mm wrench Grease remover Assembly Grease Chain line measuring device Caliper INSTALLATION INSTRUCTIONS CLEANING AND PREPARING THE BOTTOM BRACKET TUBE Clean the frame s bottom bracket tube of all residue grease oil dirt with a solvent such as Finish Line Citrus Biosolvent and thoroughly dry the area You may need to clean and or dress the threads in the BB tube using a thread chasing tool English or Italian thread depending on the bike Important If the BB tube is not completely clean of lubricant residue and moisture the thread locking adhesive will not work properly PREPARING THE ROTOR Take off the left crank Slide the left BB cup Left hand Adaptor off of the spindle The left BB cup is a precision fit on the spindle so it will simply slide off of the BB spindle Tighten the M6 screw on the eccentric see illustration Important Before mounting the Rotor syst
3. STEPS TO REMOVE THE ROTOR 3 Take out the axle with the right crank pushing from the left 1 Remove the chainrings side of the axle and pulling from the right crank 2 Remove the left crank 4 Take the links in your hands taking care not to loose the 4 3 Tighten the M6 screw on the eccentric o rings 4 Using the standard bottom bracket tool loosen the left BB cup Left hand Adaptor 2 turns is enough 5 Clean and lubricate the axle bearings the link bearings and the o rings 5 Turn the right crank unscrewing the Rotor until it is completely removed If necessary use a left crank 6 Reassemble the system following previous steps 4 3 2 amp 1 to apply more force unscrewing ne eee Hae a 6 Take off the left BB cup Left hand Adaptor Note It is not necessary to remove the chainrings the Rotor System using a damp cloth Washing NEVER spray shoot water against the Rotor System this will enable water to enter into the bearings creating oxidization rust leading to mechanical problems with the Rotor System You may ride in wet conditions i e in rain through streams rivers and you may gently rinse off O Helpful tips We recommend that you check these points regularly 1 Be certain the fixing bolt of the left crank is tight so the crank is tight on the spindle 2 Be certain the chainring bolts and nuts are securely tightened 3 Be certain the regulation point of the Rotor system is where you want it and
4. While holding the right crank with the left hand tighten the left cup with the right hand Strongly tighten the left cup approximately 52 55 Ib ft or 70 75 N m Check to see that the desired regulation point is set and did not move during the tightening process Important The tightening of the left BB cup Left hand Adaptor is very important because the left BB cup secures the Rotor System The left BB cup is not an adjusting cup it is a locking cup Tightening the cup should be completed in a progressive process and without sudden jerks or pulls which could change the positioning of the regulation points In case the positioning of the regulation point has been moved it is necessary to repeat the Regulating the Rotor procedure in step 8 REMOVE THE M6 SCREW FROM THE ECCENTRIC Remove the M6 screw using a 5mm Allen key hex wrench OLY YS Wf f KANTA A y REALA N IMPORTANT A ge wy f ee PLACING THE CHAINRINGS BEGINNING WITH THE 2 CHAINRING Maneuver the right crank so that it is pointed to a 4 o clock position down and forward to facilitate the placement of the 2m chainring on the Rotor Make sure that the bolt head impressions on the 2 chainring are facing the frame of the bicycle The chainrings has a small arrow on the outside surface Use this arrow as a reference and place the chainrings so that this arrow points towards the pedal hole in the right crank Place the 1 largest chainrin
5. e front derailleur and the chain stay and allow placement of the other two chainrings later in the installation process Important Make sure that the bolt head impressions on the chainring are facing the frame of the bicycle SCREWING THE ROTOR INTO THE BOTTOM BRACKET Screw the Rotor by hand and without force onto the BB tube by turning the right crank counter clockwise for English thread frames or clockwise for Italian thread frames Do not screw on completely Important If the Rotor does not easily screw into the BB tube it is recommended that a thread chasing tool be used to clean and sharpen the BB threads English or Italian thread depending on the bike Page 2 jf Wi LU lL 2 7 MEASURING THE CHAIN LINE Screw the Rotor into the threads until the distance between the outside part of the right crank at the pedal hole and the center of the seat tube of the bicycle measures approximately 75 5 mm for 2 chainring Road 80 mm for 3 chainring Road 82 5 mm for MTB XC chain line 47 5mm 84 5 mm for MTB Free Ride chain line 49 5mm Note To facilitate the measuring procedure and improve accuracy first measure the seat tube diameter then add half of this distance to the above measurement This allows you to measure to the outside of the seat tube instead of the center of the seat tube Each time we screw or unscrew the Rotor one 360 degree revolution the system moves in or out approximately 1mm
6. em we recommend that you remove the chainrings to avoid damaging the front derailleur Page 1 Text Release January 2004 APPLY MEDIUM STRENGTH BLUE COLOR THREAD LOCK ADHESIVE Apply a sufficient amount of medium strength thread lock adhesive F43 anaerobic resin like LOCTITE 243 on the threads of the right side of the BB tube ensuring that the first threads are sufficiently covered with the adhesive Also apply a little bit of medium strength thread lock adhesive to the threads on the left side of the BB tube You must use medium strength thread locking adhesive to correctly install the Rotor eccentric A small amount sufficient for the first installation is included with your Rotor NEVER use any type of grease during this assembly step if grease has been used the mechanism will not properly secure and the regulation points will change while pedaling NEVER use a thread locking adhesive other than medium strength Using a different strength could prevent the extraction of the Rotor system in the future and or seriously damage the threads of the bottom bracket tube INSTALL THE LEFT CUP BY SCREWING IT ON APPROXIMATELY HALF WAY Use the spindled Standard BB installation tool ONLY FOR THE INSTALLATION OF A TRIPLE CHAINRING MODEL MTB or Road Place the 3 small chainring onto the eccentric of the Rotor Do not yet fasten the chainring using the bolts See illustration This step will prevent damaging th
7. g on the Rotor We recommend mounting the chainring bolts for the 1 and 2 chainrings with assembly grease which often prevents inadvertent loosening Finally in the event of a triple chainring model secure the 3 chainring with the installation bolts If there is a reference arrow on the 3 chainring it should be aligned pointed towards the pedal hole a chainring with 24 teeth does not have a reference arrow INSTALLING THE LEFT CRANK A e Degrease the axle and the crank square tapered head e We recommend that you use medium strength thread locking on the threads of the BB spindle required on the titanium model Using an 8mm Allen hex tool tighten the left crank fixing bolt while watching to be certain the left crank is correctly amp evenly pulling tight on the taper of the BB spindle Tighten the bolt to 25 9 b ft or 35 N m WASHER PROVIDED INTO THE INSET POSITION LOCATED AT EACH PEDAL HOLE A BEFORE INSTALLING THE PEDALS PUT A Pedal tightening torque is 29 5 Ib ft or 40 N m Do not ride your bike immediately after the assembly procedure Your bike should not be used for the following 2 3 hours you must allow adequate time for the thread adhesive to dry completely to prevent movement of the Regulation Point The correct regulation point is that in which you feel comfortable using the system in all conditions in flat riding or climbing seated or standing For some cyclists to attain the athlet
8. ic benefits of the Rotor system a time period of 2 to 3 weeks and up to 3 to 4 months depending on the characteristics of the cyclist may be required Page 3 Page 4 STEPS TO CHANGE THE REGULATION POINT At least once per year or every 8 000 miles whichever occurs first we recommend that the bearings in the links and the main axle be lubricated 1 Remove the left crank 2 Tighten the M6 screw on the eccentric We recommend that a qualified professional bicycle mechanic do this but if you prefer to do it 3 Using standard bottom bracket tool loosen the left BB cup Left hand Adaptor 2 turns is yourself you will need the URS4 tool see drawing which is available for sale from most Rotor Eas resellers 4 Turn the right crank up or down pushing the M6 screw moving the eccentric to the new desired point Look at step 8 of the Installation Instructions 5 Repeat steps 9 thru 12 of the Installation Instructions to complete the process For this maintenance process you will disassemble the system in main modules that configure the mechanism and proceed Note If you change the regulation point several times we recommend that you finally remove the Rotor and as follows follow the installation instructions from the beginning in order to ensure that the thread locking adhesive securely holds the Rotor and prevents movement within the BB tube threads 1 Remove the left crank 2 Remove the axle fixing nut using the URS4 tool
9. that it has not slipped or moved Lubricating the RS4 Even riding under water as long as there is no significant pressure shooting water at the Rotor System the bearings should be fine Every time you lubricate the chain put a drop of oil over each o ring on the pivot links There are 2 pivot links and 2 o rings on each link ETE The required frequency of greasing depends on the conditions of use If not exposed to water wet muddy conditions simply lubricate these bearing once every year or every 8 000 miles If the Rotor System is very exposed to water wet muddy conditions we suggest a cleaning and lubrication within 2 months We recommend that you use a high quality lubricant such as FINISH LINE ame TEFLON FORTIFIED GREASE Visit www finishlineusa com to locate a licensed FINISH LINE Finish Line retailer in your area Yani cATION The main bearing amp most important bearing in the Rotor System is the bearing located inside the spider This is a sealed bearing however it is very important that a direct pressurized stream of water never comes into contact with this bearing or area If you believe that there is a problem i e oxidation with this bearing we recommend that you contact an authorized Rotor Technician to make the necessary cleaning amp lubricating or replacement s he natural way pedaling Page 6
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