zeta_crz_adj_targ.xlsm
Change shock c-zeta target curve   vdb / excel / zeta_backwards_shc.xlsx [view c-zeta target versions?]   vdb / excel / zeta_shcrz_adj_targ_chart.xlsm     rec_id     current     109_74_38_g change     ns 90_68_38_g 100_71_38_g 109_74_38_g 119_76_38_g 128_79_38_g 141_77_37_i 146_80_37_f zeta cf      id   target curve  from test spr rate 24 90_68_38_g 16 flsprs 18 shaft mx18-psh 10yzf450-psh 3694 Bert Reynolds   11-20-20   prel ring ls   1 of 5 increm targ      4.55 23 100_71_38_g 16 flsprs 18 shaft mx18-psh 10yzf450-psh 3694 Bert Reynolds   11-20-20   prel ring ls   2 of 5 increm targ      4.55 22 109_74_38_g 16 flsprs 18 shaft mx18-psh 10yzf450-psh 3694 Bert Reynolds   11-20-20   prel ring ls   3 of 5 increm targ Use 109 as default, or was it 119?      4.55 21 119_76_38_g 16 flsprs 18 shaft mx18-psh 10yzf450-psh 3694 Bert Reynolds   11-20-20   prel ring ls   4 of 5 increm targ      4.55 20 128_79_38_g 16 flsprs 18 shaft mx18-psh 10yzf450-psh 3694 Bert Reynolds   11-20-20   prel ring ls   5 of 5 increm targ      4.55 16 141_77_37_i hsca cone 18 shaft national-psh10 3694 Bert WP converted to National Shock   11-20-20   prel ring ls   use this for national shock      4.7 12 146_80_37_f 15 flsprs 18 shaft mx18-psh 3423 Hunter Hargis [10x better than 3416]   6-1-19   prel ring hs   targets 146 and 109 are very close. 146 is 5% stiffer at 5ips partially from 15flsprs. - use 109 for 16flsprs and phm bladder. - use 146 for 15flsprs and stk ressy piston. ..      4.3 1.075 ---> increment soft-6 soft-5 soft-4 soft-3 soft-2 soft-1 soft aver stiff stiff+1 stiff+2 stiff+3 stiff+4 stiff+5 stiff+6 stiff+7 stiff+8 .603 .648 .697 .749 .805 .865 .930 1.000 1.075 1.156 1.242 1.335 1.436 1.543 1.659 1.783 1.917   8-17-22 If you want light cforce at 2ips use target 103_58_30_g. We can assume there is a minimum amount of c force needed at 2ips, depending on the application. And there is a bare minimum needed for any application. ..   Updated 8-17-22 c-zeta reverse engineers compression numbers based on spring rate and lev ratio.    [see zeta_backwards_shc.xlsx] Each c-zeta curve is for a specific bike and lev ratio as well as the internal shock components. The c-zeta targets are based on zeta numbers at 1ips, 5ips, 50ips and are appended with _a, _b, _c, etc.   For example: 145_80_37_f The appended letters represent the pressure shock's shaft diameter, flsprs, ressy piston or bladder. Current letter designations. _b     16sxf250-psh   15 flsprs   18 shaft    ressy pist   69c   73d _f      mx18-psh        15 flsprs   18 shaft    ressy pist   69c   73d                                                   phm bladder kit      71c   75d _g      mx18-psh        16 flsprs   18 shaft   ressy pist    69c    73d                                                   phm bladder kit       71c   75d _g     10yzf450-psh    16 flsprs   18 shaft    bladder      73c    77d _g  is used for both WP and KBY shock with 18 shaft As shown above there are different calculated and dynamic gas forces for each pressure shock. Pressures are temperature sensitive and it is best to test at the same temp for each test. Variations in gas force do not affect the target numbers. Therefore, use the same target numbers regardless of shaft diameter, ressy or bladder.  Just reate a new c-zeta target and adjust the dynamic gas force to match appended letter. Pressure differences from shock to shock. For example, the 2012 and 2016 psh have different dyno gas force. 2012   73c   77 dynamic 2016   69c   73 dynamic The mx18-psh has different gas force for stk ressy piston and phm bladder kit. stk piston      69c   73 dynamic phm bladder   71c   74 dynamic The 2015 and 2016 flsprs produce different ca force and each requires it's own target. ..