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

[Bob Sumsion]

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.

What would also be useful is photos of the Gloster-Saro and non-Saro exhaust arrangements.

And finally, apart from 901 what happened to the others that survived?

Any information or links to sources of information would be gratefully received.

Bob S

 

[Wyrleybart]

As far as I know 37902-37904 were cut, making 901 unique now.

Wiki says 37902 cut Simms April 2005, 37903 Crewe Oct 2005, 37904 Booths Oct 2004

37905 is at Leicester depot and is still in the green livery it was painted when it was based on the Mid Hants line.
37906 is at Shackerstone and I think is having welding attention to its bodywork - faded Railfreight grey livery - as painted on the Severn Valley Railway.

 

[HOOVER29]

As far as I know 37902-37904 were cut, making 901 unique now.

Wiki says 37902 cut Simms April 2005, 37903 Crewe Oct 2005, 37904 Booths Oct 2004

37905 is at Leicester depot and is still in the green livery it was painted when it was based on the Mid Hants line.
37906 is at Shackerstone and I think is having welding attention to its bodywork - faded Railfreight grey livery - as painted on the Severn Valley Railway.

37906 at Shackerstone 13th July 2024