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Old 08-05-2017, 07:47 PM
Manchu16 Manchu16 is offline
Join Date: Jul 2017
Location: Enterprise, AL
Posts: 11
Default Gross Weight

What is the recommended gross weight for a 9A? I see vans has 1600-1750. Does it change because of engine 118-160hp? Or is that difference in utility vs normal categories?
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Old 08-06-2017, 05:00 AM
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KRviator KRviator is offline
Join Date: Oct 2009
Location: Sydney, Aust.
Posts: 694

The maximum utility category weight for the -9's is 1600lbs, with the maximum gross weight recommended being 1750lbs.

It is irrespective of engine size, though with a smaller - lighter - engine you have a higher payload before hitting either of those limits, while still achieving 900FPM climb at max gross.

In some jurisdictions the MTOW may be limited by legislation, ie mine is currently limited to 1320Lbs MTOW until I can get it re-registered with CAsA.
Once you have tasted flight you will forever walk the earth with your eyes turned skywards, for there you have been and there you will long to return - Leonardo DaVinci

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RV-9A 19-8519 - Finished on 10th February 2016 after 4 years, 9 months and 19 days! The 1020th RV-9 flying.

First flight 26th March 2016. Phase I done. Essential specs 145KTAS @ 2400RPM, 8000', 24.2LPH, Initial RoC 1800FPM.
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Old 08-07-2017, 07:49 AM
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airguy airguy is offline
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 4,139

In the US it is at the discretion of the builder - but you still have to get the cooperation of the DAR or FSDO rep to sign off the airworthiness certificate during the inspection. Mel Asberry gave me +100# on mine based on the higher horsepower engine and constant speed prop I installed.
Greg Niehues - VAF 2018 dues paid
Garden City, TX
N16GN flying!
Built an off-plan 9A with too much fuel and too much HP. Should drop dead any minute now.
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