Zippy Sport Q&A
1. What is the airfoil section? 4412 (Same as a Luscombe)
I've actually never flown a Luscombe, but I often say it must be a great flyer because it has a Zippy Sport airfoil
2. What is the chord length? 47.625 inches
3 What is the thickness of the main spar? 5.5 inches
4 Where is the center of the main spar located in% of chord? 22.3%
5. What is the thickness of the rear spar? 2 inches
6. Where is the center of the rear spar located? In % of chord? 85.3%
7. I am very interested in buying building plans of the one-place airplane Zippy Sport. Please send me your offer with more information about the plane, for example:
dimensions of the cockpit.
  • Cabin width at Seatback 22 inches
  • Cabin width at Instrument Panel Station 22 inches
  • Height from lower longeron to rear carry through 36 inches
  • Height from lower longeron to front carry through 36 3/4
  • Lower longeron to cabin ceiling 40 inches ± 1 inch
  • Door opening 28 3/4 wide x 33 inches
  • Seatback to Firewall 63 inches
8. What is the wing construction?
  • Spruce Spars
  • Formed aluminum ribs
  • Aluminum Leading Edge
  • Fabric covered
  • Blind Rivet attachment vs. Rib Stitch
  • Alternatively, ribs can be constructed from plywood (stacked and band sawed)
9. What is the fuselage construction?
Welded 4130 Chrome Molly tube
10. What Engines have been used?
  • HKS-700e 4 stroke
  • Rotax 503 w 3.0, 2.58, 2.238, and 2.0 reductions
  • Rotax 508 4 stroke w 3.0
  • Rotax 532 with 2.58 
  • Rotax 582 with 3.0 and 2.238 reductions
  • Cuyuna 430 R with 2.0 reduction
  • VW 1200
11.  I need to know if I'd fit in it. I am 6'2" and 195 lbs. The fit should not be a problem for most frames. There is an abundance of room in the forward part of the cabin which can accommodate very long legs. See No. 7, above for dimensions. If a builder has a long torso, the cabin height can be altered marginally during construction. The width sounds narrow just to look at the numbers, But at 5' 10" or so, with weight varying from 160 to 220lb, I seem to fit in just fine, even with winter clothes and such.
12. Is 650 hours pretty reasonable
  build time for someone who has experience building or is that figured as a first time builder.
That is very difficult to predict because variables like weather, tools, and facilities also have an impact. The Zippy requires very little in the way of specialty tools. Time spent covering, painting, ...detailing, can vary wildly. Having said all this, the 650 hours is a pretty fair estimate for an experienced builder, or a resourceful, mechanically inclined individual. 
13.   I think I saw some where that the 
wings can be folded.  Correct?
The Zippy Sport was an entry in the Dupont/Western Flyer design contest, judged in 1983. One of the requirements of the contest was a means of wing folding.  The Zippy has such a feature that basically involves:
Remove the wing root attach bolts
Remove wing strut lower bolt to fold strut against the bottom of wing, or remove 3 bolts each, and thus, the entire strut.
Wing pulls out, away from root on telescoping tube attachment at the rear spar. 
The aileron connection automatically disconnects (tapered pin at aileron root engages or disengages corresponding hole in aileron horn)
The wing is then rotated, leading edge down, and swung back to a separate cradle bolted forward of the tail. 
In folded position, the tip of the wing slopes up to the rear of the aircraft, above the horizontal stab.
From a practical standpoint, the best value of the wing fold mechanism would be in compacting the aircraft for storage, to save hangar space. 
For transport, wing removal is the popular course of action.
14. How many flying?  Any used ones available?  A quick search in landings.com under model shows eight. There are likely a few others registered with something else listed under model. Occasionally one pops up for sale. There was one on barnstomrers just before Oshkosh (July 05)
15. Where do you carry the fuel, and how much? A standard 6 1/2 gallon tank mounts in the fuselage forward of the instrument panel. There is  room for a 4 1/2 gallon auxiliary tank behind the seat above the top longerons. 
16. Experimental, of course, don't have ADs, but still I wonder if you have sent advisories to owners/builders? Before we purchased the design, there were some early revisions to plans that were sent out by the designer. These have been included with subsequent serial numbers. Other than the use of various powerplant packages, there has been no known, or official design change for over twenty years.
17.  What is the highest-time ZS flying? Once upon a time, our 83ZS probably was, if we actually caught up to a builder in Texas. At that time, we were coming up on 400 hours. That was years ago, and flight frequency has varied over the years. 83 ZS now has approximately 700 hours. It would not be surprising if there are a couple 1000 + hour examples out there.
18.  Is it a kit or just plans?  Just plans. Presently, there are no prefab Zippy Sport components offered by Green Sky Adventures, Inc. Though a kit is not out of the realm of possibility, promotion of our Micro Mong kit is presently a higher priory. Advances in technology in the last couple decades particularly in affordable CNC part production, and availability of a light weight dependable 4 stroke,  may effect future decisions
19. Room for some baggage in this plane?  Is it very CG sensitive--this can make baggage pretty problematic There are a couple cubic ft available  that may be used for baggage ahead of the rudder pedals. Or, the auxiliary fuel tank could be replaced with baggage area. Small areas may be built in as desired.  Our Zippy Sport has flown with forward or aft fuel only, with pilot weights from 160 to 220 lb. ...easily from 15 to 30 percent of MAC. The Zippy is neutrally stable at best (if stable is good) in roll, pitch, and yaw, declining in that order. Elevator stick force is very light and seldom annoying in any situation for local flights. A bungee trim can be used for extended flight. We often selectively burn off fuel for pitch trim. Baggage? Keep in mind, utility category at 680 lb does not allow for massive amounts of baggage. Dropping back to Normal category helps in that regard, but then rough air penetration speed and maneuvers must be more carefully taken into consideration.