GRACE MX Manual 2013 English GRACE MX Manual 2013 Page | 43
Table of contents Appendices ............................................................................................................................................ 45 Attachments .......................................................................................................................................... 45 Explanation of the symbols ................................................................................................................... 46 Your GRACE MX .........................
Dismantling the gear system ................................................................................................................. 67 Assembling the rear wheel .................................................................................................................... 68 Assembling the gear system .................................................................................................................. 68 Tensioning and aligning the drive belt .....................................
Explanation of the symbols To begin with, we would like to familiarize you with the meaning of the attention signs and hazard symbols that you will find in this user manual. Please pay attention to the instructions displayed next to the symbols and follow them without fail. Caution! This attention sign alerts you to a potentially dangerous situation which could result in injury to people in the vicinity and damage to the product or objects.
Your GRACE MX The GRACE MX guarantees a new kind of movement in the wild. As when the fun of your traditional MRB stops, then the GRACE MX is just getting started. As the first production vehicle worldwide, the GRACE MX combines the Gates CARBON DRIVE, the NuVinci N360 hub and the extremely powerful BOSCH mid-motor, which accelerates the bike up to 45 km/h 1.
General description of the GRACE MX 1. Seat 2. Rear light 3. Licence plate holder 4. Seat post 5. Mid-motor 6. Rear wheel 7. Carbon belt 8. Battery housing 9. Side reflector3 9.b Spokes reflector2 1 ² ³ 10. Stem 11. Headlamp 12. Suspension Fork 13. Front wheel 14. Hydraulic disk brakes 15. Crank and pedal 16. NuVinci N360 gear hub 17. Kickstand 1, 3 18. Dynamo² 19.
Intended Use Due to its design and its equipment, your GRACE MX Pedelec is designated for the use on paved roads and fortified forest- and field paths. The required safety-related active and passive lighting systems are installed in accordance with the German Regulations (Authorizing the Use of Vehicles for Road Traffic -STVZO). Please install the additionally supplied rear-view mirror and the two reflectors2.
Before the first use The GRACE MX Pedelec belongs to the class of electric motor assisted bicycles, also called EPAC (Electric Power Assistant Cycles). The engine power will help only if you exert force on the pedals. Your GRACE MX S-Pedelec is not a bicycle and as a moped, it is subject to the country specific regulations (StVZO).
Bosch standard charger The scope of delivery includes a Bosch standardcharger to charge the battery. The charger supplied is so compact and light that you can comfortably take it with you. External dimensions: 155x85x55mm, Weight: 860g Transport devices Save the two transport devices for the brake system. They will be a useful aid when repairs are being carried out. Please observe the information in the technical manual Avid (Sram) Keys Two keys are provided in the scope of delivery for the battery lock.
Side reflectors The self-adhesive side reflectors are attached laterally in the battery case. Rear-view mirror Screw the mounting clip of the rear-view mirror with a 4 mm Allen key between the front brake and the HMI unit with two M4 screws to the left handlebar so that it will not skew. 1 In the photo (on the right above) installation of the mirror for right hand traffic is depicted. The mirror must be mounted symmetrically on the right hand side for left hand traffic.
Safety information and tips Always check that the lights are working before using your bike. Make sure that you avoid wearing loose clothing on your lower body. In that way, you can prevent clothing from being caught in the belts or between the spokes. Check all wearing parts regularly. These include drive belts, brake pads, brake disks, seals and tyres. Check your GRACE MX regularly for loose spokes as they can lead to instability at high speeds.
Initial operation Charging the battery The battery is mounted on the down tube of your GRACE MX. The battery must be removed from the bracket to charge it. Prior to removing the battery, please make sure that it is switched off. The battery will be loosened and will fold down, if you press simultaneously on both levers of the battery holder. Opening the battery lock will release the battery from the holder and it can fall out.
Connect the charger plug to the battery, which is switched off. The charger display will blink. In order to ensure that the battery is fully powered, charge it fully with the charger before you use it for the first time. The battery is fully charged, if all 5 LEDS stay lit up. After the battery is fully charged, the charging process will be interrupted automatically. Disconnect the charger from the power supply and the battery from the charger. The battery will be automatically switched off in the process.
Switching the drive on/off Insert the battery into the holder and switch it on using the On/Off button. The drive of the GRACE MX can be switched on and off also on the control computer (see page 61). Switching on the battery also switches on the control unit display. The control unit shows the state of charge of the battery as well as the settings of the drive unit.
If no output is requested of the drive for 10 minutes, the battery will automatically switch off to save energy. Checking the tyre pressure Tyres make contact between the wheels and the road. They ensure that the wheels grip the road and that there is traction and absorb small shocks depending on the tyre pressure. Please note the manufacturer’s information on air pressure printed on the side of the tyre. Exceeding the maximum permissible air pressure when you pump your tyres can lead to their bursting.
Setting the seat height To set the seat height, loosen the 4 mm Allen screw of the seat post clamp. Adjust the height of the seat to your body measurements by putting your heel on the pedal at its lowest point. To do this, your leg should be fully extended. Make sure that the saddle is aligned horizontally. Pull the seat post out no further than the mark for the minimum plug-in depth. Then tighten the screw of the seat post clamp with a torque of 5 Nm.
Setting the seat angle In order to change the angle and the horizontal position of the seat, loosen the two inner Allen screws of the seat post clamp, which are located directly behind the seat post above the rear wheel. Now you can slide the seat back and forth in the clamp guide and adjust the angle. Then re-tighten both screws (see torque table).
Functional description NuVinci N360 shifting system, Rotary handle Gears are shifted on the NuVinci N360 rear wheel hub simply by turning the rotary handle. On the rotary handle display, the gear system is shown as an easily understandable graphic – a hill for deceleration and a plateau for faster speeds. As there are no set gear levels, the exact shifting results from your desired comfort level.
Control Computer The display provides you with information concerning: support level, speed, reach, average speed, maximum speed, distance travelled and hour. You can choose between four kinds of drives: Eco, Tour, Sport and Turbo. Please take note of the information of the original instructions for the BOSCH Drive Unit Cruise | Intuvia| PowerPack 300 | PowerPack 400 | Charger, page 08: Product descriptions and Specifications a. b. c. d. e. f. 1. 2. 3. 4. 5. 6. 7. 8.
Operation Unit 10. Operation Unit 11. Button Display function „i“ on the operating unit 12. Button value decrease/scroll down „-“ 13. Button value increase/ scroll up „+“ 14. Button „Walk” 3. Control Computer 4. Holder control computer 15. Locking of the control computer 16. Blocking screw for the control computer (included in the scope of delivery) 17. Speed sensor 18.
Lighting A precise lens system distributes the light of a high-performance LED evenly on the road. In this way, a high intensity of light is achieved and safety is increased in the process. The LED headlamp and the rear light are turned on by pressing the light button on the control unit.
Rock Shox Sektor suspension fork The Rock Shox Sektor RL suspension fork reliably offers the necessary traction and control on rough terrain. A lock-out function prevents the suspension from movement for efficient pedalling on a flat road. Simply turn the blue knob “compression” at the fork´s crown to the right restriction. The spring stiffness can be adjusted by turning the black knob. The rebound can be adjusted by turning the red knob on the right fork leg.
Maintenance Prior to any maintenance work Before performing any maintenance, make sure that the drive is switched off. Please take note of the information of the original instructions for the BOSCH Drive Unit Drive Unit Speed/ control unit Intuvia, page 02 Operation When the front and rear wheels have been disassembled, insert the transport locks provided between the brake pads in order to avoid unintentionally adjusting the distance between them.
Dismantling the front wheel Loosen the quick release mechanism of the axle on the front wheel. To do this, first of all, turn the lever to 180° and snap it into the recess in the axle. The axle can now be unscrewed by means of the lever. Pull the axle to the right and remove it from the fork. While you are doing this, grip the front wheel tightly, release it and move it downwards out of the fork.
Dismantling the rear wheel Dismantling the gear system Please follow the guidelines in the manual for the NuVinci N360 on page 11 in the chapter entitled Assembly and Disassembly of the Rear Wheel Loosening the (15 mm) cap nuts will enable the rear wheel to be taken out of the dropout. Slip the drive belt carefully off the sprocket. When the front wheel has been disassembled, insert the brake pad lock between the brake pads in order to avoid inadvertently adjusting the distance between them.
Assembling the rear wheel Remove the transport lock. Carefully put the drive belt on the belt sprocket of the rear wheel. Put the rear wheel into the dropout. Position the rear wheel in such a way that the torque support (gib washer) slides into the dropout internally on the right and externally on the left. When you are doing this, please ensure that the brake slides properly between the brake pads.
Tensioning and aligning the drive belt The Gates carbon drive belt is very resilient and durable. However, before and during its installation, extreme caution must be exercised in order to avoid damaging the carbon fibres, which constitute the actual strength of the drive belt. Excessive bending and twisting could cause tears that can lead to a defect in the belt, if it is under great strain.
As the tension may vary slightly along the belt, this procedure should be carried out on a belt that is gradually being moved on. To do this, turn the pedal crank one rotation in each case and repeat the measurement process a few times. If the belt tension is too high or too low, continue to adjust it until the measurement result corresponds to the specification. Tighten the four (6 mm) Allen screws of the right and left belt tensioners on the dropouts.
Changing the tyres Remove the valve cap of the tube and the knurled nut of the valve nozzle. Bleed the tube by pressing the valve pin. Use a tyre iron to loosen the tyre from the rim. Replace the tyre or the defective tube. If you are putting on a new tyre, change the tube as well! Pull one side of the tyre onto the rim. In the process, please pay attention to the running direction of the tyre that was printed by the manufacturer. Some makes of tyres do not have any rotational direction printed on them.
Lever the tyre bead over the rim flange with the installation tools. Pump the tube until the tyre assumes its shape and check to see if it is sitting correctly on the rim. Pump the tyre in accordance with the manufacturer’s specifications (max. 4.5 bar, 60 psi) and check again that the tyre is sitting correctly in the rim. Tighten the knurled nut and screw the valve cap onto the valve. Mounting and dismounting the pedals Lightly grease the threads of the pedal axles and the cranks.
Changing the brake pads Pull the safety clip of the guide pin. Remove the guide pin from the brake calliper with a (2.5 mm) Allen key. Use a flat-tip screwdriver to press the brake pads back into the piston. Pull the H spring with the inserted brake pads out of the brake calliper.
Replace both brake pads, if their total thickness is less than 3 mm per brake pad. Put the H spring with the new brake pads into the brake calliper. Tighten the fastening screw to 1 Nm and then attach the safety clip to the guide pin.
Wearing parts, maintenance and vehicle inspection after a fall Some parts and components on your GRACE MX are susceptible to wear due to their function and must be monitored with particular care for that reason and regularly maintained or replaced. Wearing parts include the following: Tyres Wear to the tyres depends on how the GRACE MX is used and can be very strongly influenced by the rider.
Replacing belt sprockets in the event of damage The belt sprockets must be changed in any case, if they are damaged by significant external influences. For example, if you hit a rock or a tree root hard with the front belt sprocket when you are riding the bike, it can bend and would have to be replaced in that case. Stones that are drawn in and lodge between the belt and the belt sprocket can distort the teeth of the belt. Teeth can break off in whole or in part.
Frame paintwork and coating The coating on the structural elements of your GRACE MX protects them against corrosion. Check all painted areas regularly for damage and touch them up immediately. This will also maintain the appearance of your bike. When you purchased your GRACE MX, you received a service booklet from your dealer. Please adhere without fail to the inspection intervals entered for your safety and your enjoyment of your bike.
Technical information Frame Fork Type of engine Torque Batteries Display Headset Brakes Drive: Tyres Battery charger Weight Specific features Range Seat post Handlebars Handles Stem Seat Wheel rims Front wheel hub Pedals Control unit Crank Maximum permissible overall weight Frame geometry Charging time Headlamp Aluminium (6061-T6) Rock Shox Sektor RL Bosch Drive Unit (350 watts) Max. 50 Nm Bosch Li-Ion 36V/11Ah (400 Wh) bzw.
Frame sizes GRACE MX size M GRACE MX size L A Top tube B Standover height C Inside leg measurement D Seat tube height 585 mm 820 mm 705 mm 475 mm 610 mm 840 mm 730 mm 500 mm GRACE MX Manual 2013 Page | 79
Torques Torques for binding elements on the wheels Rear wheel axle nut Dropout on the frame Braking Torque support droupout left 30 Nm 16 Nm 6 Nm Torques for the handlebars and stem Stem handlebars Stem fork steerer Grip shift Brake lever 5 Nm 5 Nm 2 – 2.5 Nm (according to NuVinci) 2.8 – 3.
Warranty conditions Since 01/01/2012 you have been entitled to a warranty period of two years. This period begins when the GRACE MX is handed over by your dealer, who is also the person to contact in the event of a warranty claim. Please store the transfer protocol and the invoice or proof of purchase, as the case may be, in a safe place for the duration of the warranty period.
EC Declaration of Conformity 1 Name/address of manufacturer: GRACE GmbH & Co. KG; Wehrmühlenweg 8; 16359 Biesenthal, Germany Product description: EPAC/Pedelec (electric power assisted cycle) This declaration refers exclusively to the Pedelec and exclusively to the status in that market in which it was placed. Furthermore, subsequent mounted parts by the end-user and a subsequent done work on the bike is not accepted by MIFA.
