Hello all,
Here is a quick run down of all of the Extra models, in order.
1) Extra 230
This was the first airplane that Walter Extra built for aerobatics. It is a single seat and has a steel tube fuselage and was covered in aluminum and fabric. It has a mid-wing design that is similar to the Laser 200, Edge 360, and Edge 540. The wing is all wood and it is powered by a 230 hp. engine (I think it is a modified Lycoming IO-360, but I'm not sure about that).
2) Extra 260
This was a modification/redesign of the Extra 230. It was beefed up and sported a new all composite wing and a Lycoming IO-540 of 260 hp., hence the name change to Extra 260. This also was a single seater. It also had a new cantilever tail (airfoiled and supported from the inside) as opposed to the welded steel tail that was on the 230.
3) Extra 300
This is a two seat, 300 hp. version of the Extra 260. It still had the mid-wing and it used the same construction methods as the 260.
4) Extra 300L
This was the first of the low wing models, and the L in the model number designates that this is a low wing Extra. This came out in the late 80's or early 90's and the wing position was changed for asethetic as well as performance reasons.
5) Extra 300S
This model came out after the L model did and was a single seat version. It too has 300 hp.
6)Extra 200
This is a smaller verison of the Extra 300L. It has a smaller fuselage and I think Extra 300S wings. It has a 200 hp Lycoming IO-360 and was designed to appeal to aerobatic schools, though alot of them are going into private ownership as well.
7) The Extra 330 series...
3DMike is right. The 330's are not a production aircraft. The first one was modified in house at Aerosport, the US distributor for all of Extras including the 400 and soon to be 500. The 330s have a bigger rudder and elevator (that is counterbalanced) and a Lycoming IO-580, a little bit bigger powerplant that cranks out 330 hp. If you ever talk to a person that has flown aerobatics in a full scale Extra, they will tell you that the rudder is not that strong and you really have to stomp on it during knife-egde flight. Extra never really made these airplanes in production, but a few exist in the hands of world class competitors. There are two S models that I know of, Gene Soucy's (which he bought from Phil Knight and is selling right now...) and Peter Bessenyi's. I think that Extra made 1 330L prototype, but it could have been a modified 300L.
Eli, you can find 3-views at
www.aerosport.com . After the redesigned their site, they took the 3-views off, but you can e-mail them, or if you are serious, it is better to call. They had some trouble finding the S model 3-views, but they found them. (I was in charge of getting some documentation for Warren Thomas and Quique Somenzini for their TOC paperwork), so they might have them close at hand now. Hope that this helps.