Recent content by Bob Sumsion

I am now thinking that a combination of tumbledown's description coupled with varying frame rates used by different Mobile Phone and Digital cameras used for the videos explains the varying rates of alternating light patterns. This video on fidget spinners vs frame rates looks close to...

Did you manage to view the event with just your eyes rather than through the viewfinder? Beginning to wonder about the frame rates like tumbledown mentioned. This video has the look you describe.

For LED lights in general, I can accept your view. However, the two videos are made by different YouTubers and it does not explain the changing of lights alternately at a slow, but regular frequency, this does not match what I have seen previously with LED vs Camera technology. I think there...

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

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...

I seem to recall that here was a picture posted on the internet showing electric blue painted E3xxx locomotives double heading MKI stock. Does anybody have any idea of the train formation(s) used?

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...

In 2005 I was lucky enough to have recorded the class 442's operating from Bournemouth to Brockenhurst. These recordings captured many characteristics required for a OO scale model using ESU LokSound technology. Including: The whining characteristics of the ex 4-REP traction motors...