BS EN 17860-3:2024
$198.66
Carrier Cycles – Lightweight multi track carrier cycles. Mechanical aspects
| Published By | Publication Date | Number of Pages |
| BSI | 2024 | 56 |
This standard specifies mechanical aspects of lightweight multi track carrier cycles.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 7 | European foreword |
| 8 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions 4 Use cases: private and commercial/professional use |
| 10 | 5 General vehicle requirements 5.1 Numbers and condition of specimens for the strength tests 5.2 Accuracy tolerances of test conditions for brake tests and strength tests 5.3 Protrusions 5.4 Sharp edges 5.5 Securing and strength of safety-relevant fasteners 5.6 Shimmy 5.7 Requirements for loading areas/load securing 5.8 Parking and stability 5.8.1 Requirement |
| 11 | 5.8.2 Tipping stability of multi track carrier cycles 5.8.2.1 Static tipping stability of multi track carrier cycles 5.8.2.2 Test method Figure 1 โ Static tipping stability 5.8.3 Parking stability while loading 5.8.3.1 Requirements 5.8.3.2 Test method |
| 12 | Figure 2 โ Parking stability while loading 5.8.4 Dynamic tipping stability of multi track carrier cycles 5.8.4.1 Requirement 5.8.4.2 Test method |
| 13 | Table 1 โ Reference values for centripetal acceleration 5.8.5 Dynamic tipping stability on slopes 5.8.5.1 General 5.8.5.2 Requirement 5.8.5.3 Test method 5.8.5.3.1 General 5.8.5.3.2 Starting forwards horizontal and uphill |
| 14 | 5.8.5.3.3 Stopping forwards downhill 5.8.5.3.4 Stopping backwards downhill 5.8.6 Prevention of wheel jamming of multi track carrier cycles |
| 15 | Figure 3 โ Example of deflection devices 5.9 Pedal clearance 5.9.1 Ground clearance |
| 16 | 5.9.2 Toe clearance 5.10 Wheel and tyre assembly โ clearance 5.11 Wheel retention 5.11.1 General 5.11.2 Wheel retention โ retention devices secured 5.11.2.1 Requirement 5.11.2.2 Test method 5.11.3 Front wheel retention โ retention devices unsecured |
| 17 | 5.11.4 Wheels โ quick release devices โ operation features 5.12 Vibrations, ergonomics and design 6 Brakes 6.1 General 6.2 Hand-operated brakes 6.2.1 Brake lever position 6.2.2 Brake-lever grip dimension 6.2.3 Attachment of brake assembly and cable requirements |
| 18 | 6.2.4 Brake-lever โ Position of applied force Figure 4 โ Position of applied force on the brake-lever type A 6.2.5 Brake-block and brake-pad assemblies โ Safety test 6.2.5.1 Requirements 6.2.5.2 Test method 6.2.6 Hand-operated braking-system โ Strength test 6.2.6.1 Requirement |
| 19 | 6.2.6.2 Test method 6.2.7 Back-pedal braking system โ Strength test 6.2.7.1 General 6.2.7.2 Requirement 6.2.7.3 Test method |
| 20 | Figure 5 โ Back-pedal brake test 6.3 Requirements of the test method on a test track 6.4 Requirements of the test method on a test bench 6.5 Tests |
| 21 | 7 Steering 7.1 General |
| 22 | Figure 6 โ Carrier cycle steering systems |
| 23 | 7.2 Handlebar 7.2.1 General 7.2.2 Handlebar stem โ Insertion-depth mark or positive stop 7.2.3 Handlebar stem to fork steerer โ Clamping requirements 7.2.4 Handlebar grips or handlebar plugs 7.2.5 Steering unit โ Static strength and fastening tests 7.2.6 Handlebar stem: Forward bending test 7.2.7 Handlebar to handlebar stem โ Torsional security test 7.3 Dynamic steering test 7.4 Handlebar/stem unit โ Dynamic test 8 Frame 8.1 Suspension frames โ Special requirements 8.2 Requirements for all frame types |
| 24 | 8.3 Frame โ Dynamic test with pedalling forces 8.3.1 General 8.3.2 Test method |
| 27 | Figure 7 โ Frame โ Dynamic test with pedalling forces 8.4 Frame โ Dynamic test with horizontal forces 8.4.1 General 8.4.2 Determination of the test loads 8.4.2.1 General 8.4.2.2 Overall centre of gravity position far to the rear/down ( โฅ 0,8 ) |
| 28 | 8.4.2.3 Overall centre of gravity at the front/high ( < 0,8 ) 8.4.3 Test method |
| 29 | Figure 8 โ Frame โ Dynamic test with horizontal forces |
| 30 | 8.5 Frame โ Dynamic test with a vertical force onto the seatpost 8.6 Frame โ Dynamic test with vertical forces onto the loading area 8.7 Frame โ Dynamic test with lateral forces 8.7.1 General |
| 31 | 8.7.2 Requirement 8.7.3 Test method Table 2 โ Test cycles โ Frame โ Dynamic test with lateral forces |
| 32 | Figure 9 โ Schematic top view of a three track vehicle |
| 33 | Figure 10 โ Schematic top view – three track test setup for test load applied to single wheel Figure 11 โ Schematic front view โ multi track test setup for test load applied to axle with two wheels 8.8 Frame โ Brake mount test 8.8.1 Requirements |
| 34 | Table 3 โ Lever lengths with different tyre diameters 8.8.2 Brake mount fatigue test 8.8.3 Brake mount static torque test |
| 35 | 8.9 Frame โ Trailer suitability stress test 8.9.1 Requirement 8.9.2 Test method 9 Front wheel fork 10 Wheels and wheel/tyre assembly 10.1 Wheels/tyre assembly โ Concentricity tolerance and lateral tolerance 10.1.1 Requirements 10.2 Wheel/tyre assembly โ static strength test 10.2.1 Requirements |
| 36 | 10.2.2 Test method Figure 12 โ Wheel/tyre assembly: static strength test 10.3 Wheel and wheel/tyre unit โ Dynamic test for carrier cycles 10.3.1 Requirement |
| 37 | 10.3.2 Test method 10.3.2.1 General Figure 13 โ Wheel/tyre unit โ Dynamic test for multi track carrier cycles 10.3.2.2 Test method for step 1 |
| 38 | Table 4 โ Test cycles โ Wheel and wheel/tyre unit โ Dynamic test step 1 10.3.2.3 Test method for step 2 Table 5 โ Test cycles โ Wheel and wheel/tyre unit โ Dynamic test step 2 11 Rims, tyres and tubes 11.1 General 11.2 Tyre inflation pressure 11.3 Tyre and rim compatibility |
| 39 | 11.4 Rim-wear 11.5 Greenhouse effect test for composite wheels 11.5.1 General 11.5.2 Requirement 11.5.3 Test method |
| 40 | Figure 14 โ Maximum rim’s width measuring Figure 15 โ Wheel laid down on tire and axle 12 Mudguards/wheel covers 13 Pedals and pedal/crank drive system 14 Drive chain and drive belt 15 Chain-wheel and belt-drive protective device 16 Saddles, seatposts and seats 16.1 Saddles and seatposts |
| 41 | 16.2 Seats 16.2.1 Requirement 16.2.2 Test method for dynamic loads Table 6 โ Values for dynamic seat test 16.2.3 Test method for static loads |
| 42 | Table 7 โ Values for static seat test Figure 16 โ Loading pad for the backrest |
| 43 | Figure 17 โ Loading pad for the seat surface 17 Lighting systems and reflectors 18 Warning device 19 Rear-view mirror 20 Safety belts for cyclists |
| 44 | 21 Marking 22 Manufacturerโs instructions 23 Structural integrity test |
| 45 | Annex A (normative) Test of cycles professional/commercial use Table A.1 โ Test cycles |
| 46 | Annex B (informative) Calculation of the centre of gravity of cycles or carrier cycles B.1 Experimental determination of the centre of gravity B.1.1 General Figure B.1 โ Free body diagram (cycle) for calculating the centre of gravity |
| 48 | Figure B.2 โ Weighing the cycle on the ground (horizontal measurement) |
| 49 | B.1.2 Measurement and calculation results (example 1) Figure B.3 โ Inclined weighing of the cycle (measurement with raised front or rear wheel) Table B.1 โ Weight distribution on the cycle shown above |
| 50 | Table B.2 โ Centres of gravity of the cycles Figure B.4 โ Centre of gravity determined on the example cycle B.1.3 Centre of gravity determination on multi track vehicles or carrier cycles B.1.3.1 General Figure B.5 โ Tricycle or carrier cycle (side view) |
| 51 | Figure B.6 โ Tricycle or carrier cycle (side view, inclined position) Figure B.7 โ Tricycle or carrier cycle (rear view) |
| 52 | B.1.3.2 Measurement and calculation results Table B.3 โ Weight distribution on the carrier tricycle Table B.4 โ Centre of gravity of the carrier cycle B.2 Calculation of the centre of gravity |
| 54 | Bibliography |
