Views
8 months ago

MOTOREX Magazine 2016 108 EN

  • Text
  • Motorex
  • Spindle
  • Cooling
  • Iaponiki
  • Cleaner
  • Oils
  • Vehicles
  • Packaging
  • Transmissions
  • Geneva
16_0477_Magazine_EN

INSIDE Two-time world MX

INSIDE Two-time world MX 2 champion Marvin Musquin (USA) tested the new MOTOREX fork oils on his KTM. PRODUCT DEVELOPMENT WITH A CLAIM TO PERFECTION Suspension forks are sophisticated chassis elements that require careful tuning for road use and especially for racing. The choice of fork oil plays a key role. The V14.217 development project for a new fork oil is a good example of how MOTOREX goes about developing products. Fork oils are a firmly established part of the MOTOREX product range. Until now the RACING FORK OIL range has consisted of five viscosities: SAE 2.5W, 5W, 7.5W, 10W and 15W. But technology marches on in the world of cycle forks, as elsewhere. Modern forks, some of which include features like the ability to modify spring and shock absorption settings from the handlebars, are continually making new demands of the fork oil. A FINGER ON THE PULSE OF TECHNOLOGY KTM uses forks from leading European motorcycle chassis component manufacturer WP. These forks feature a “closed cartridge system” design and currently require a fork oil of viscosity SAE 4W with very specific characteristics. As KTM’s lubricant supplier, MOTOREX was not slow in launching a development project for a product to satisfy these requirements. The following specifications were defined for the new product: • maximum reduction of friction values • optimized breakaway torque (stick-slip) • extreme temperature stability • modified viscosity index in maximum range • high shear stability • low foaming • quick air release characteristics The MOTOREX development team applied these specifications when producing an initial set of test fork oils that were used to establish comparison values with the existing generation of fork oils. This involved real-life tests, some of which were carried out in cooperation with an MTB chassis specialist. WHY MOUNTAIN BIKE FORKS? Suspension elements in oil-filled enduro and downhill mountain bike forks need considerably greater sensitivity due to their design and the significantly lighter weight of bicycles compared to motorcycles. This made them ideal for efficiently testing the prototype fork oils and examining the effects of the “configurable” parameters in the recipe. Measurement values in the coeffi- 14

COMPARISON OF FRICTION ZONES ON BASE VALUES RACING FORK OIL 30 25 20 15 10 5 0 Friction zone from mean Variation in dia. (stick-slip) 1.5 11.76 before * Friction reduced by approx. 40% Stick-slip reduced by approx. 80% 0.2 7.11 after* RACING FORK OIL IN FOAM TEST 4W fork oil competitors MOTOREX RACING FORK OIL 4W The lower the friction value, the better the lubricating effect of the oil. In practice, a higher value (variance) for breakaway torque (stick-slip) has a negative impact on ride behavior. The difference between the two fork oils is clearly visible in a foam test in a transparent test cylinder. Various test series were carried out together with a partner who specializes in mountain bike chassis optimization. 15-time German mountain bike downhill champion Markus Klausmann (left) and Stefan Nebel (Superbike) Touratech test rider took part in real-life testing. cient of friction analyses, for example, are extremely precise. In particular, it is much easier to take extremely sensitive breakaway torque (stick-slip) measurements in a mountain bike fork than in a motorcycle fork. Various specially developed pieces of testing equipment were used to conduct the tests. The results were analyzed in the MOTOREX lab, and the parameters of the formula were continually optimized. The perfected end result was thus achieved in a defined control loop. 3D RESPONSE TECHNOLOGY When designing the new fork oils, MOTOREX took advantage of a new technology that uses a special molecular structure to enable a new form of shock-absorbing behavior. Tensile and compressive forces are no longer dispersed in a zig-zag accordion fashion, but in a sort of multi-level “grid structure”. EXTENSIVE REAL-LIFE TESTING Once the test results were in line with the development engineers’ specifications, it was time for real-life test- ing. The real-life tests were also carried out in several disciplines (with mountain bikes as well as off-road and street motorcycles). It goes without saying that forks are expected to meet a different set of criteria in a race than on a multi-thousand kilometer road trip. The experienced participants’ impressions of the ride were analyzed and evaluated using test logs and fork oil samples. SHARED SUCCESS The bottom line is that MOTOREX now offers just the right fork oil for every use and fork type, with the right shock-absorbing and suspension properties for every set of requirements (short, sharp shocks in a downhill mountain bike race from 2400 down to 600 meters above sea level, extremely large spring movements in a MX Grand Prix, or ride comfort settings on a heavily loaded touring motorcycle). The findings from the development of the new RACING FORK OIL 4W were subsequently used to improve the entire fork oil line at all viscosities. • MOTOREX MAGAZINE 108 I JULY 2016 15

MOTOREX MAGAZINE

MOTOREX Magazine - Deutsch

MOTOREX_Magazine_2017_110_de
MOTOREX_Magazine_2017_109_de
MOTOREX_Magazine_2016_108_de
MOTOREX_Magazine_2016_107_de
Racing_Report2015_de_web
MOTOREX_Magazine_2015_106_de
MOTOREX_Magazine_2015_105_de
MOTOREX_Magazine_2015_104_de
Racing_Report_2014_de
MOTOREX_Magazine_2014_103_de
MOTOREX_Magazine_2014_102_de
MOTOREX_Magazine_2014_101_de
Racing_Report_2013_de
MOTOREX_Magazine_2013_99_de
MOTOREX_Magazine_2013_98_de
MOTOREX_Magazine_2013_100_de
MOTOREX_Magazine_2012_97_de
MOTOREX_Magazine_2012_96_de
MOTOREX_Magazine_2012_95_de
broschuere_Racing_Deutsch_2011
MOTOREX_Magazine_2011_94_de
MOTOREX_Magazine_2011_93_de
MOTOREX_Magazine_2011_92_de
MOTOREX Magazine 2010 91 DE
MOTOREX Magazine 2010 90 DE
MOTOREX Magazine 2010 89 DE
MOTOREX_Magazine_2009_88_de
MOTOREX_Magazine_2009_87_de
MOTOREX_Magazine_2009_86_de
MOTOREX_Magazine_2008_85_de
MOTOREX_Magazine_2008_84_de
MOTOREX_Magazine_2008_83_de
MOTOREX_Magazine_2007_82_de
MOTOREX_Magazine_2007_81_de
MOTOREX_Magazine_2007_80_de
MOTOREX_Magazine_2006_79_de
MOTOREX_Magazine_2006_78_de
MOTOREX_Magazine_2006_77_de
MOTOREX_Magazine_2004_73_de
MOTOREX_Magazine_2004_72_de
MOTOREX_Magazine_2004_71_de
MOTOREX_Magazine_2003_70_de
MOTOREX_Magazine_2003_69_de
MOTOREX_Magazine_2003_68_de
MOTOREX_Magazine_2002_67_de
MOTOREX_Magazine_2002_66_de
MOTOREX_Magazine_2002_65_de
Motorex_Revue_1981_01_defr

MOTOREX Magazine - Français

MOTOREX Magazine 2018 113 FR
MOTOREX Magazine 2018 112 FR
MOTOREX Magazine 2018 111 FR
MOTOREX Magazine 2017 110 FR
MOTOREX Magazine 2017 109 FR
MOTOREX Magazine 2016 108 FR
MOTOREX Magazine 2016 107 FR
MOTOREX Racing Report 2015 FR
MOTOREX Magazine 2015 106 FR
MOTOREX Magazine 2015 105 FR
MOTOREX Magazine 2015 104 FR
MOTOREX Racing Report 2014 FR
MOTOREX Magazine 2014 103 FR
MOTOREX Magazine 2014 102 FR
MOTOREX Magazine 2014 101 FR
MOTOREX Racing Report 2013 FR
MOTOREX Magazine 2013 99 FR
MOTOREX Magazine 2013 98 FR
MOTOREX Magazine 2013 100 FR
MOTOREX Magazine 2012 97 FR
MOTOREX Magazine 2012 96 FR
MOTOREX Magazine 2012 95 FR
MOTOREX Racing Report 2011 FR
MOTOREX Magazine 2011 94 FR
MOTOREX Magazine 2011 93 FR
MOTOREX Magazine 2011 92 FR
MOTOREX Magazine 2010 91 FR
MOTOREX Magazine 2010 90 FR
MOTOREX Magazine 2010 89 FR
MOTOREX Magazine 2009 88 FR
MOTOREX Magazine 2009 87 FR
MOTOREX Magazine 2009 86 FR
MOTOREX Magazine 2008 85 FR
MOTOREX Magazine 2008 84 FR
MOTOREX Magazine 2008 83 FR
MOTOREX Magazine 2007 82 FR
MOTOREX Magazine 2007 81 FR
MOTOREX Magazine 2007 80 FR
MOTOREX Magazine 2006 79 FR
MOTOREX Magazine 2006 78 FR
MOTOREX Magazine 2006 77 FR
MOTOREX Magazine 2005 76 FR
MOTOREX Magazine 2005 75 FR
MOTOREX Magazine 2005 74 FR
MOTOREX Magazine 2004 73 FR
MOTOREX Magazine 2004 72 FR
MOTOREX Magazine 2004 71 FR
MOTOREX Magazine 2003 70 FR
MOTOREX Magazine 2003 69 FR
MOTOREX Magazine 2003 68 FR
MOTOREX Magazine 2002 67 FR
MOTOREX Magazine 2002 66 FR
MOTOREX Magazine 2002 65 FR
MOTOREX Revue 1981 01 DE

MOTOREX Magazine - Svenska

MOTOREX Magazine - English

Racing_Report_2014_en
14_0471_MOT_Magazine102_EN_RGB
14_0053_MOT_Magazine101_EN
MOTOREX Magazine 2009 88 EN
MOTOREX Magazine 2009 87 EN
MOTOREX Magazine 2009 86 EN
MOTOREX Magazine 2008 85 EN
MOTOREX Magazine 2008 83 EN
MOTOREX Magazine 2007 81 EN
MOTOREX Magazine 2007 80 EN
MOTOREX Magazine 2006 79 EN
MOTOREX Magazine 2006 78 EN
MOTOREX Magazine 2006 77 EN
MOTOREX Magazine 2005 76 EN
MOTOREX Magazine 2005 75 EN
MOTOREX Magazine 2005 74 EN
MOTOREX Magazine 2004 73 EN
MOTOREX Magazine 2004 72 EN
MOTOREX Magazine 2004 71 EN
MOTOREX Magazine 2003 70 EN
MOTOREX Magazine 2003 69 EN
MOTOREX Magazine 2003 68 EN
MOTOREX Magazine 2002 67 EN
MOTOREX Magazine 2002 66 EN
MOTOREX Magazine 2002 65 EN

MOTOREX Magazine - Deutsch (Österreich)

BROCHURES