Does anyone guard-band their Phase I W/B numbers??

[David Z]

Source is the Canadian Flight Supplement and it covers the weights for JetA, JetB, Avgas and a few oil weights.

Weights for one US Gallon of JetA is:
7.32lbs at -40f
7.19lbs at -4f
7.09lbs at 32f
7.00lbs at 59f
6.91lbs at 86f

[pierre smith]

...However, in the past month's 98 deg temps, the measly weight savings with the heat, doesn't make my Air Tractor exactly 'jump' off the runway when I'm loaded with 450 gallons of 8.33lbs per gallon.

Thanks,

[Andy Hill]

...to go back to guard-banding... as an example here in the UK we do not have an "experimental" category. We have to build RVs much closer to the Vans design, and if we stray, have to seek a "mod" - a laborious process in time, paperwork and (small) cost. In practice it serves to deter unecessary costly / heavy / unsafe modifications, most of which detract from the excellent Vans design.

The 1st of a new RV series is examined closely, and flight tested, including "guard banding" to say VNE +10% (I think). Some of the flight testing is done by qualified test pilots. All subsequent builds are just tested for 5-10hrs to some of the limits, and can be "test flown" by relatively inexperienced pilots (often a builder with a few hundred hours including relevant, but not necessarily RV, experience).

Andy
RV-8 G-HILZ
RV8tors