OneX & Sonex Empty Weight

Discussion for builders, pilots, owners, and those interested in building or owning a Onex.

OneX & Sonex Empty Weight

Postby pfhoeycfi » Fri Aug 25, 2017 3:51 pm

I am curious to know what actual empty weights are looking like, especially if any Aerovee powered OneX builders were able to achieve an empty weight less than the specified 600#.

I would also be interested in knowing the same for the Sonex. I believe the B's have a specified empty weight of 620#...not sure what the legacy model was spec'd at.

any thoughts would be appreciated...

peter h
doylestown, pa
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Re: OneX & Sonex Empty Weight

Postby Fastcapy » Fri Aug 25, 2017 4:16 pm

I know from a past survey that the average empty weight of a Aerovee Sonex was right about 650lbs. Mine came in at 652, which was 2lbs over my goal of 650, but my smoke system was not included in that goal weight so I would guess without that I would be under 650 by a couple pounds.

I do think it is pretty rare to find a Sonex that is at or below 620lbs, the ones that are usually have the Jab 2200
Mike Beck
Oshkosh, WI (KOSH)
Sonex #1145 N920MB
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Re: OneX & Sonex Empty Weight

Postby Sonex1517 » Fri Aug 25, 2017 5:24 pm

When I had my airworthiness inspection in October 2015 the weight of my AeroVee turbo powered Sonex taildragger was 685 pounds.
Everything happens for a reason!

Robbie Culver
Sonex 1517
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Re: OneX & Sonex Empty Weight

Postby kmacht » Fri Aug 25, 2017 6:21 pm

My legacy sonex is 667lbs as a taildragger and aerovee
There was a thread on here at one point where everyone listed their weights.

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Re: OneX & Sonex Empty Weight

Postby Brett » Fri Aug 25, 2017 8:52 pm

671 lbs aerovee turbo tailwheel
Sonex 1645
Aerovee Turbo
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Re: OneX & Sonex Empty Weight

Postby Sonerai13 » Fri Aug 25, 2017 9:06 pm

Most Sonex that I look at are around 670 lbs empty, give or take a few pounds. The B model might be a few pounds heavier.
Joe Norris
Sonex N208GD (S/N 450)
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Re: OneX & Sonex Empty Weight

Postby mike.smith » Fri Aug 25, 2017 10:25 pm

Sonex A model, tailwheel, AeroVee, smoke system, all aluminum surfaces polished (paint on fiberglass, only): 655 lbs. A full paint job is said to weigh about 25# on a Sonex.
Mike Smith
Sonex N439M
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Re: OneX & Sonex Empty Weight

Postby lgsievila » Fri Aug 25, 2017 10:43 pm

Without any paint you might be able to get close to 600 lbs for a Onex but I think 615 lbs is more realistic. I came in at 641 painted without any extras with an AeroVee before I switched engines.
Loren Sievila
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Re: OneX & Sonex Empty Weight

Postby Stogie6 » Sat Aug 26, 2017 6:37 am

My Aerovee powered Onex (conventional gear) no paint, weighed in at 616 pounds.
David F. Jones
Memphis (Mud Island), TN
Aerovee powered Onex
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Re: OneX & Sonex Empty Weight

Postby pfhoeycfi » Sat Aug 26, 2017 8:51 am

Thanks so much for those replies. I also found the mentioned link to a spreadsheet showing Sonex weights, build options etc...a few pages down under general discussion. I should have asked this question months ago when I began researching. I assumed the 620# was real. For my only other build, the specified weight was achievable, with paint. Anyway it appears that for me, the std Aerovee is not an option in the S or W. Again, thats for my situation. It will work for me in the OneX, assuming 600 plus a few. So I'll look at some engine options and take another look at the OneX. Thanks....
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