I pulled some numbers from Scott Casler's Hummel Engines site and thought others would be interested as well. Note that the half VW options are substantially more expensive per horsepower than full VW conversions. The best bang for the buck appears to be the 1915cc 65 hp full VW with the lowest price per horspower of any of them and right in the middle of the pack in terms of weight per horsepower. Maybe the "21st century Volksplane" ought to be a basic two-seat motorglider along the lines of the Scheibe SF-25A Motor Falke but simplified even further?
| CYLINDERS | HORSEPOWER | WEIGHT (LB) | LB/HP | PRICE (US$) | $/HP |
|---|---|---|---|---|---|
| 2 | 32 | 85 | 2.66 | 3700 | 115.63 |
| 2 | 37 | 85 | 2.30 | 4200 | 113.51 |
| 2 | 42 | 84 | 2.00 | 5100 | 121.43 |
| 2 | 45 | 84 | 1.87 | 5200 | 115.56 |
| 4 | 50 | 140 | 2.80 | 4400 | 88.00 |
| 4 | 60 | 145 | 2.42 | 4600 | 76.67 |
| 4 | 65 | 145 | 2.23 | 4625 | 71.15 |
| 4 | 76 | 147 | 1.93 | 6200 | 81.58 |
| 4 | 85 | 147 | 1.73 | 6600 | 77.65 |
