I finally put a reliable timer on the track (approx 62ft.) this week. Went with a Carrera 71590 for now. Anyways I put Peter's printed mag chassis under a Dslot Porsche 962 and a Mazda 787, using all the original Kyosho running gear including the stock tires. The result was a fast lap of 5.05 sec. and 5.08sec. respectively, with with flawless predictable handling. Unfortunately I was unable to get a time on the cars before the change but my Dslot McLarens go 5.49/5.52 sec. Thank you Peter.
Randy