Plenty of the Kyosho JJ anniversary Ultimas have been sold and the majority will spend their life on a shelf on display of course if you want a true tribute Ultima you will need the correct electronics so I am offering this Tekin MOSPOWER electronic speed controller and Trinity Monster Horsepower motor combo. This is an early ESC-190 Pro (P) – competition version from around late 1986-7 as earlier versions used Yokomo silicon wires before Tekin switched to their own wires. Of course, this ESC is using MOSFET transistors as the name suggests. At the Offroad World Championships 1987 at Romsey, Great Britain Kyosho team driver Joel Johnson used a Mospower Controller like this to win the 2WD class with his Ultima.

Tekin was founded by Kevin Orton, a 1/12th scale driver working for Delta as a motorbuilder and electronic designer before. After leaving Delta in 1985 he started Tekin Electronics, famous for their ESC and chargers. So this Tekin Mospower actually is the successor of the Delta Autodrive II ESC what was the first American FET type ESC.

The Mospower Controller series was available in three versions but no marking was used for differing. But some details will tell the true version.

ESC-100 Standard (S) – low budget version – black sticker, red letters, 6 + 2 FET

ESC-130 Racer (R) – budget version – black sticker, golden letters, 3 + 2 FET

ESC-190 Pro (P) – competition version – black sticker, golden letters, 6 + 2 FET