Fuel pump installations for the Zenith STOL 750

Gravity feed from the wings

Many people with 701s point out that the aircraft will gravity feed at typical pitch angles as long as one is flying straight and level or descending. The following observations should be similarly true for the 750. However, due to steep climb angles and because the wing is behind the engine, the wing can be below the engine. Pilots flying the 701 say that gravity feed during high pitch angles such as take off and steep climbs is marginal. The solution is to install a pump as a backup and always use it on take offs and during descents in the event of a go-around being necessary.

Fuel pumps and the Corvair engine

WilliamWynne advises not to use the Corvair mechanical fuel pump as they frequently weep fuel, thereby putting aircraft at risk of fire. The Gold Series of oil filter housings he provides precludes the use of a mechanical pump.

For aircraft needing fuel pumps, the recommendation is to use the exact dual electric fuel pump system outlined down to the last nut and bolt in the Zenith installation manual from Wynne or follow the good notes on MarkLangford's electric pump configuration he uses on his KR2S . Mark's site has a lot of really good information about the 'why' of his installation, which is valuable food for thought.

Related Terms:

Facet Fuel Pump

External links:

Mark Langford's dual electric fuel system