A very satisfying result from quite a bit of perseverance resulted in a totally serviceable fuel flowmeter in XL231. The original proved unreliable, sometimes showing odd flow rates. The rate is calculated via 'windmill' transmitters in the fuel line of each engine supply circuit and then calculated and totaled.
Ken Sanderson; aka 'Radio Ken' and his colleague Terry took 3 Fuel Flowmeter computers including XL231's original and made one good one out of the 3. They tested each radio valve and ensured only the good one's were installed in the best unit. Their time and effort has paid off as each one showed the fuel flow rate at engine idle on last Sunday's 'Thunder Day' at the Museum and the totaled amount is also correct on the totaliser gauge next to the flowmeter controller. This was also recently replaced. None of this is required for what we do with XL231 but, we like to keep her as correctly working as she was in RAF service and for historical purposes.
Engines 1,2,3,4 all individually pictured.
Well done Ken and Terry!