I have written a pamphlet on how to build a High Performance RV4. my RV4 N112TT weighed 915 lbs with a stock O360 with a top speed of 217mph. 2450 rpm at 8000 190 mph and 7.5 gph
It sells for $6.00 which covers little over cost of mailing.
I built a Witman tailwind 1972
i built a RV4 1991
I bought a RV4 2012
Yes! An RV4 is or can be lightened up if you just eliminate all the hip and gatta have goodies. But then you would have to look out the canapy and watch this country slip by at 165 knots at 7.5per hour or 23 mpg with a WAC chart on your lap. Yaw String
I built a Witman tailwind 1972
i built a RV4 1991
I bought a RV4 2012