Hi guys,
The facet pump is low pressure 3 psi or approx. 0.1 bar. When the carb bowls are full, a definite change in the pump’s noise is heard – it almost switches off. Priming the carbs is now a very easy operation.
The facet pump is free flow in one direction only and is capable of priming itself up to 1 vertical metre.
The fuel flow is --> tank –-> facet pump –-> in-line fuel filter (0.3mm) –-> diaphragm pump –-> carbs. Remember, the in-line fuel filter is not for the fuel pump/s, but rather for the carb jets. There is also a 0.3mm filter on the fuel pick up pipe in the tank (safety wired etc.) meaning that in any event, the facet pump is post-filter.
I decided to fit the facet pump in series because;
• The existing diaphragm pump is unrestricted (butterflies can be opened easily) with low pressure applied from the tank side.
• A parallel fitting would require too much plumbing, one-way valves etc.
Except for the 60mm stainless ‘U’ Bolt, bought the lot from Solo Wings.
Both Dave at Solo Wings and my AP are satisfied that it is the correct pump. My trike’s log book has been duly updated and signed-off by the AP.
Regards
John ZU-CIB
PS: Special regards to TK and will catch you next time Rudi.
