I kinda like both, a header tank around 4 gallons (one hour) and wing tanks that tranfer to the header.
Gravity feed on my C172 never failed. Some may have but gravity itself has never stopped so far as I can tell. Fuel pumps do. NTSB reports are full of failed fuel pumps. And some plugged up systems including gravity feed. I like the idea of "checking" my fuel pump on a 1/2 hourly basis, (pump in another 1/2 hour of fuel) and having some reserve when it fails. I can find time in cruise for periodic scheduled and checklisted fuel transfers. Better to have something on the schedule than falling asleep. Droning motors have always made me sleepy. Another opportunity to witness the fuel pump failure 1/2 hour before flameout. That will be a half hour well spent, likely to have a positive outcome, maybe stretch it out to 3/4 hour by going to vbest. Better than an unannounced abrupt flameout. Just my opinion. Cheers! BTW my current factory built airplane has no header, will quit upon pump fail and without warning. Somehow that's ok with the FAA. I found several ntsb reports of exactly that happening. Killed some folk. Thanks a lot. I'll go with the idea of having a half hour warning.. jg ________________________________ -Please see LIST RULES and KRnet info at http://www.krnet.org/info.html -Change list delivery options at https://list.krnet.org/list/krnet.list.krnet.org/ Affinity List Info Board -Search recent KRnet Archives at https://list.krnet.org/empathy/list/krnet.list.krnet.org/ -Search John Bouyea's decades of archive at https://www.mail-archive.com/krnet@list.krnet.org/
