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  1. Bob Sumsion

    Class 68 Alternating Marker Lights? Or just a frequency clash with LED vs Camera technology?

    Opinions are divided, but IF this is a clash of LED driver frequency vs Camera shutter frequency, then why is the top light not effected in both videos, and why are the alternating lights operating at the same frequency of changeover in both videos? Thoughts? Robert
  2. Bob Sumsion

    37/9's Engine RPM at Idle and Maximum Power?

    I am looking for information on the 37/9 engine RPM range for both the Ruston RK270T and Mirrlees-Blackstone MB275T The information is required for a pulsed smoke and sound system being developed for large scale models and I need the IDLE RPM and MAXIMUM GOVERNED RPM values for each engine...
  3. Bob Sumsion

    LokSound Decoder projects - access for recordings wanted

    I am looking for opportunities to profile the class 43 'Valenta' powered HST and class 86. Access is also required for classes.. 56, 58, 90, 91, 92, 220/221 If anybody has contacts within the rail industry to help facilitate such a request or has information upon who to approach I would be...

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