On Monday, March 20, 2017 at 10:36:41 AM UTC-7, wrote:
How and why, was the PW-5 made for so cheap?

Nobody can answer this because it proves you are wrong!

Basic sailplanes do not cost a fortune to build. There is a market for entry level gliders with a handicap of 1.00 for a reasonable price. Few pilots want to own a 40-50 year old fiberglass sailplane.

How much did an ASW-19 cost brand new in 1975?

Material cost by the pound. Labor costs by the hour. Hours are somewhat proportional to wetted area which correlates to pounds - plus mostly fixed labor hours to make all the innards. Add some overhead and a little profit for the OEM and distributor and there's your retail price.

Modern material like carbon fiber cost more per pound than plain old GRP, but you can make gliders smaller and lighter with it so if you do it right the cost goes down. Build them in a lower labor cost country with some manufacturing skills and that's about as cheap as it's gonna get. For the most part you don't save money by using an old airfoil. Sure, you can use cheaper materials if you can make the thicker wing out of GRP instead of carbon, but the whole thing gets heavier and more expensive as a result so it's a losing game these days with modern materials, modern airfoils and CFD design tools.

Take advantage of all of that and you pretty much get the GP 11 out of Poland. 39:1 max L/D and a 260 lb empty weight. Ask Tim McAllister to price you one. They make bigger ones too, but more $$.

As someone posted, building a 1980s standard-class glider today will cost about what a modern 15-meter glider costs less the flaps, which add less than $10,000 - and part of the reason why no one is building standard class gliders anymore. The old days weren't cheaper by design, they were cheaper by compounded inflation. If I take the LS-4 I bought new in 1980 for $26,000 and apply the CPI for the intervening 37 years, I end up at more than $80,000.

The only way to get a new glider for much less is to build a time machine. You can skip 40 years of inflation. Hope you saved some D-Marks though.

Andy
9B