Quote:
Originally posted by bradders
BDG - just had a look at the charts, funny how different either dyno's or bikes can be. My early sps is almost identical to the R, nice and smooth and linera, but peaks at 10450rpm and 126bhp, but trque 77lb
must try an R someday to compare with mine.... |
Very true. A man with a million times more knowledge that me (not difficult i admit before either JPM or TP comment
)
told me that comparisons between different dynos are a little pointless. These charts are from the same dyno, but at different times, though seat of the pants does agree with the differences in the midrange and topend.
I've heard people get higher figures for other SPS's but the one consistency is that Ducati say the SPS produces 123bhp and it did 120 on the dyno.
Ducati qoute 135bhp for the R and that produced 132.
Both bikes are within 3 bhp of Ducati's claim.
At the time i believe Ducati qouted real world rear world figures rather than what they do now, and do the same as the Japanese and measure the figures at the crank, which allowing for drive train losses to the rear wheel can make upto 10% difference.
Of course dyno operators can use a variety of measuring methods, and this in itself can make 2 or 3% difference.