Am 25.09.2019 um 22:31 schrieb conrad:
Maybe I'm math challenged.? With 75mph top speed and 60" drivers I get? ((75mph)(12in/ft*5280ft/mi)/(60min/hr))/(pi*60in/rev)=420rpm.? This is much higher than the maximum last step of 178rpm.? What am I missing?? ?For every 1mph I get 5.6rpm using the above.
Conrad, your math is correct.
If you want to allow 420rpm you can do that. But it's better then to use
appropriate sound files. Class64.vsd doesn't sound good with 420rpm (if it works at all - computer must be fast enough). MRR locos often drive too fast and I like to limit the top speed.
Another point is that VSD has no special support for particularly high speeds. I've thought about it, but I don't have a solution yet.
I'm interested in this because of my success with the "steam1" file in adding stop/start, coast and half-speed plus many additional sounds, i.e, long & short whistles, crossing gate, and radio chatter.? Now I would like to take this to a USRA 0-6-0 slope back tender with a top speed of 40mph and 51" drivers. My "0-6-0" file does respond differently than the unmodded "steam1" at low speeds but I would like to spread out the low speed chuffs to better match the switcher.
I suggest to try different rpm thresholds. It is also useful to consider the speed curve of the loco decoder. I use a linear curve. DecoderPro supports such customizations excellently.
Does the USRA 0-6-0 have different top speeds for reverse and forward travelling?
Klaus
