I built and fly an S-7. 2015 kit flew it in 2022. I'm happy.
I think my biggest questions at this point
1) What is NOT included in the kit?.... I understand most kits don't include paint, avionics, and sometimes engine...but some do. I was looking at Sling at Sun N Fun and their kit pretty much can cover pretty much everything I think but paint. That of course isn't necessary, but I do need to know for getting a better overall feel for the end cost
Looking at the "order sheet", it seems that everything might be included except avionics, wiring, and paint....
2) how did the kit go together for you? Any major snags or question points....such as poor drawings or instructions, etc...?
I suppose a variable playing into your answers...Did you do any sort of quickbuild?
They had the s21 at osh. Sat in it. I'm big, it's small. Like kitfix small. Probably fine if you're under maybe 6'1" and 200lb. On paper it looks like a near perfect combo of short/unimproved field and cruise characteristics. Turns out I'm more RV14 sized.
The S21 is looking on paper to maybe a be a good fit for what I'm thinking.... I'm not so interested in the "backcountry" or STOL mission. I love camping and wish that I was looking for back country....but I live in the East. That seems much more of an out West kind of thing. If I'm honest, I'll be landing on pavement and occasional an improved grass strip. Almost certainly never anyplace you couldn't take a Cessna 172 with wheel pants!
Still, that design focus brings with it a lower stall speed which I think is good for safety. That hits the high end cruise speed, but the S-21 is probably still fast enough for me. Certainly faster than many of the others I've considered...and I like the nose-dragger option. As much as I'd prefer conventional, a trike makes better sense for lower insurance rates and safety.
I want to get a hands-on look with one, to try it on for size. Fortunately, I'm small.... 5-10 and about 150#...but I still want room for larger folks. Anyway, for me it's more about feel, visibility, baggage access and baggage area size, etc... Sadly I didn't find one at sun n fun....
I spent quite a bit of time at the Van's tent at sun n fun the year before last, and quite a lot of time in, under, and around their RV-14. I think that really fits my mission probably better, but there are things I just can't get past with that design.