The time-tested HT Models continue to be a top seller in applications such as helicopter fleet ops needing additional ruggedness, performance and reliability. It has also been improved with both the /ec SuperDuty motor system as well as tougher, beefier mount castings for maximum performance in the toughest applications. The noseless design makes it a good fit for many tight cowling applications and its performance makes it the original starter of choice for large engine applications (Lycoming 720 series-powered aircraft). The HT's performance characteristics are nearly identical to those of the High-Torque Inline listed in the chart above.The Lycoming LS, PM & HT starters feature an integrated starter solenoid for homebuilt applications not wishing to install a separate firewall solenoid. Sky-Tec HT & NL starters feature Sky-Tec's exclusive KPS® (internal Kickback Protection System) that utilizes internal self-resetting torque clutch to minimize starter and ring gear damage in the event of a premature ignition misfire event (kickback).