After assembly of the vehicle through debugging, frame, fork and fork fit: flexible combination fork should turn with no loose
You can listen to the sound check with mild shock without loose parts or assembly is not tight, the other for parts, or by the requirements of the following
Test methods to test:
(1) protrusion: After assembly, where the exposed length of greater than 8mm rigid protrusion, the end shall be rounded down, rounding radius should not be water in 6.3mm,
Big-endian size of such prominence should be greater than 12.7 mm, small end size should be larger than 3.2 mm.
(2) handlebars: the fork up into the riser pipe shall be not less than the minimum depth of insertion depth mark, the adjustment amount should be consistent with design requirements
Requirements by properly adjusting the handlebars, it should be left in position in front of each side of not less than 60 "to flexible range, there should not be tight at the bearing point, stiff stay or relaxation.
(3) the riser
Should be required to establish a permanent mark on the tube, made it clear that the riser riser insert the minimum depth of the fork, or a reliable device to ensure at least a permanent insertion depth. Insertion depth mark or inserted from the end of the riser shall be measured from not less than 2.5 times the diameter, and mark the following in at least one length of pipe diameter material without grooving. Insertion mark should not damage the strength of the riser.
(4) the risers and fork
Testing requirements will correctly assemble the riser in the riser inside the frame and fork, according to the manufacturer's instructions will tighten the screw core of the riser / fork of the clamping device applied a 25N. m of torque, some of our guests in the field can be used for the following tests, and the front wheel to lose the former, fixed front wheel, two-hand grip while the former exert 70N of force, to see if loose. (Note that this point before the guests have complained, has joined SWI)
5) axis components: axial pressed into the bowl should be flat or screwed into the connector, the locking, the axis of rotation should be flexible, no loose; axis lock master of the tightening torque should be not less than 30Nm.
(6) wheel

Testing requirements of the gate with a electric bicycle rim, the rim at the point on the appropriate vehicle for the radial measurements along the wheel, its beating, shall not be greater than 2 mm and, in the appropriate point on the rim wheel vehicles for axial measurement along , its runout should be less than 2mm, the former called radial runout tolerance, who said face runout tolerance. General plant requirements for aluminum wheels need to turn the precision of 1.5mm, the factory wheels are generally simple device testing, inspection by adjusting the amplitude of the tensioner to adjust the degree of radial and face runout tolerances.
(7) tires
Requirements of the tire, wheel vehicles should meet their own standards, tires and tubes shall be desolate round match. The tires inflated to the maximum inflation pressure of 110%, after 5 min after the tire should complete inclusion on the wheel vehicles. Most of the factory tires will be 48 hours for static discharge test, and some factories in the packaging of tires will be charged before a certain percentage of the gas, so check after unpacking can be noticed that the tires without major leakage.
(8) wheel rim and fork, fork up the gap between the level
Should not be less than 5mm, the relative deviation on both sides should be less than 3mm. Corrected by the wearing of the spokes of the wheel rim should not be less than the average tension of 300N, single spoke tension should not be less than 150N; spoke no protruding screw head outside of the mother; valve hole should be located between the two files .
(9) pedal:
Should be able to distinguish between left and right thread logo, thread should be correct and with the crank with a good, functioning should be flexible, not loose.
Asked one, is the ground from the bike in no-load conditions, will be a pedal in its lowest position and the foot surface and parallel to the ground, if only one foot on the surface, then the surface should be facing up to the foot, bicycles should be able to tilted from the vertical position to the side of the pedal 250 and does not touch any component on the ground. Also equipped with a shock spring for the bike, should make the detection of shock spring in a compressed state, as if there is a rider weight of 85kg, the same sitting.

Requirements and second, toe clearance: not equipped with sufficient fixtures (such as toe sets) of the bicycle, the pedals to the front tire or front fender (they go to any point in time) shall be not less than the gap between 89 mm. The measurements are from the center line of any one pedal forward parallel to the longitudinal axis of the bicycle, the amount of tires or front fender to the front of the arc swept out the shortest distance.
(10) saddle
Requires a static load test (saddle and saddle tube) is about to saddle and saddle tube correctly assembled on the frame, saddle clamp bolt tightening torque should be recommended. Away from the front or rear of the saddle point within the 25mm to the folder where the saddle at the moment of great moment to be at large to exert a downward vertical point not less than 668 N force. After removal of this force, in the front or rear 25mm away from the saddle point within, to which parts of the saddle clip of torque, the torque should be the point of applying a horizontal force of 222N.

Requires two saddle strength test: the saddle clamped in a fixture, and the saddle clamp bolt tightened its recommended torque to deal with back-end saddle below the surface and below the nose before the force of 400N applied in turn The force should not be added to any part of the steel beams on the saddle.
(11) chain: After installation, the drive chain should be elastic in the rotation when appropriate, flexible operation and may not have stuck, off the chain or frame, chain guard grazing, riding test can be inverted in the chain a few times to listen to the friction the sound is satisfactory, the new standards give up the old standard in the chain should be able to withstand the tension of the 8010N's minimum damage requirement. But that should meet the QS standards.
(12) sprocket crank: two crank should be assembled in a line; axis of the stick at both ends of the lateral surface should be installed level with the crank; crank and the frame flat fork of the gap should not be less than 2mm and not with the chain cover grazing.
(13) Chain cover: location should be correct and reliable, without loosening. At least the main requirements from the chain and chain cover plate ratchet teeth at the loading point from the previous 25MM.
(14) pieces of gear drive

No mention of this old standard, the new standard for speed flyer with the battery bike after the request, the provisions in the post next to the flywheel should be fitted with a piece of gear drive chain to avoid being inappropriate derailleur cause obstruction or damage to the chain wheel rotation or to a sudden stop.
(15) flywheel

Speed ​​car that part of the tooth plate stack, according to grade five hundred sixty-seven speed range, which corresponds with the axial position of tooth plate to determine the vehicle speed changes can have several files, such as dental plate in front of three, followed by six, a total of there are eighteen speed changes. Most of the factory did not tighten the flywheel assembly, we can confirm the following test: First, brake brakes tight, fixed body does not move, slam the pedal can be found in a half circle around the flywheel will spin.
Assembly required, it should be flexible rotation, no loose; its front wheel should not be less than the tightening torque 18Nm, the rear wheels should be not less than 30Nm.
(16) brakes
 (I) test a bicycle brake lever is installed, when the handlebar angle set at 60 degrees, the brake shoes can not collide with the wheel rim; back to the middle position on the handlebars, the brake lever should neither bend nor to reverse.

(II) tested two confirmation right after adjusting braking system, or vice-gate in the gate to the end of 25mm away from the office to put on a force, this force should be 450 N, or less than 450 N are also allowed, as long as can do:

a) line to hit the brake the brake set, or sets you free to encounter the horizontal tube;

b) Vice gate to gate line and the horizontal top tube flat face, or across the horizontal tube;

c) the gate of the brake lever and handlebar tube to cover the top face flat.

The trial should be put on each gate and gate to the deputy repeated 10 times. Action should be flexible and reliable, the angle and rim brake shoes should fit, after adjustment, the gap should be less than 3mm; around the gate to be able to match, the installation location should be consistent with the country's habits.
III) test three brakes in addition to the technical requirements for proper installation and flexible use of light, gate to gate spring can quickly reset, it should also ensure that all parts of the strong coupling strength, usually more than 980N, braking performance provided by GB3565, which Dry braking at the highest speed, the trip is more than 5m or 5m bike to 24km / h driving speed, or travel to 5m below the bike to 16km / h driving speed, the distance should be at 5.5m smoothly and safely stop within the wet brake to 16km / h travel speed bike, a distance of 15m should be smooth and safe stop.
(17) control line:
Should be manipulated to ensure the normal length of rope and rope movement should be smooth and suites, the end should have been passivated or add strength to withstand the tail cuff 20N
(18) reflector
Four positions need to install the main reflector.
Side two, at least one must be installed on the wheel spokes, and the two reflectors must be the same color, white or transparent, or yellow.
Before a general assembly of the fork, the requirements should be as transparent white.
Pedal surface before and after a one, should be yellow.
Last position in the back, usually on the shelf or on the saddle, asked to use red.
(19) lighting system
This part of the national standard is not mandatory, but to have installed the lighting system requirements Headlight wiring should be reasonable and to avoid galling, friction commonly called light, friction wheel driven mainly by a small motor to generate electricity.
(20) variable speed device
(I) variable speed drive test device is the focus adjusted outside the transmission device, within the response file in the correct speed, not when the reverse phenomenon occurs off the chain; position within the variable speed transmission device should be clear, there is no middle gap. Variety of testing techniques. We often test speed device, there are two, one is positioned, adjust the rotation to clear the selected location of each file; there is a non-positioning, front dial control and adjust the chain friction transmission. The first refers to the positioning of the common non-variable speed dial, and a is the rotation speed. The quality of variable speed device with a great relationship with some factories on the entire supply of transmission equipment manufacturers will use different parts, which sometimes can be learned from parts MARKING.

(II) test the first test of the assembled product safety project after passing through the rotating flywheel or fine-tuning knob to adjust the transmission after a good road riding, riding, when attention switched between tooth plate size piece is smooth, by stall a stall a stall switch, and anterior plate and flywheel for the largest slice position down the chain to see whether the chain smooth.

(III) does not produce smooth speed probably there may be several reasons: First, some factories in the assembly when the speed is not fully tested by the function, such as transmission line too loose, or just fine-tuning screws are not adjusted, the second is the assembly on Some parts are not fitted in place, such as the device before the call. Under normal circumstances transfer device is to be adjusted relative to the parallel position with the tooth plate, if not in place will have a hyperlink, or a deflection off the chain or not poor, and finally the frame problem, the normal frame size drawings shall be good location, for example, if the size of failure after the tripod, it may lead to variable speed function properly.

(21) Bracket: Bracket support from, the handlebars in any position, the body should be able to stop, stand location, reset should be flexible and reliable.