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SKY-TEC ST5 SERIES STARTERS

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12 Volt (C12ST5)24 Volt (C24ST5)
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Overview

Sky-Tec Flyweight™ Starters for Continental aircraft engines feature superior design features over old, heavy, stock OEM starters including:
• Durable, reliable design
• All-in-one bolt-off/bolt-on installation
• Eliminates continuous duty clutch on smaller series engines
•Positive disengagement eliminates wear while your engine is running
•Significant torque increase/multiple gear reduction
•Decreased current draw

Safe for ALL TCM starter adapters!
ST5 series starters offer the following features:
• Powerful 2.2 kW high-torque, permanent magnet motor
• Faster cranking RPM - typically 10-25% faster than heavyweight starters.
• Light weight (9.1 lbs!);
• Proven gear reduction drive train tempers current draw;
• TCM starter adapter friendly electromechanically engaged/disengaged drive system provides instantaneous release of the starter adaptor wrap spring virtually eliminating starter-induced adapter wear.
• Approved and recommended for ALL starter adaptors ("classic style", "improved style", "permold", "sand cast", etc.)
• A simple, easy-to-install, bolt-off/bolt-on, maintenance-free starter that fits the entire "large" series Continental engines (with right-angle starter adapters) from O-300-D through TSIO-550 engines
• Attractively designed and affordably produced making it the first and only choice in lightweight large Teledyne Continental engine starters.

How is the ST5 starter different?
The ST5 starter couples a high power 2.2 kW motor with an innovative solenoid-engaged (and disengaged) drive system completely disengages the powerful permanent magnet motor while the starter is unpowered eliminating possible TCM starter adapter wear while providing authoritative, high-torque starting. Positive solenoid enabled engagement and disengagement allows the TCM starter adapter to fully unwrap under all normal operating conditions thus greatly prolonging starter adapter life.

How do I know which one to buy?
If your TCM engine has a right-angle starter adapter at the rear of the engine and a clean source of nearly located battery voltage, chances are this starter is the right one for your application. Consult their extensive aircraft fit guide just to be sure.
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Reviews

Works great!

Gary H
September 2, 2019

Wow. Turns an Io520 like it’s no big deal.

Tim S
November 9, 2018

Wow! What a difference.

Dave S
June 1, 2018

So far so good. I installed this starter on my IO-520 and promptly got called away from the heated hangar. I was expecting a real hard start at 24f and had good turnover and a prompt start twice when I really needed it. A lot better than the older type that couldnt pull the engine through the first prop without bouncing it.

David K
January 19, 2018

Rocket A
January 12, 2018

Be sure to check the allen head bolts that secure the flange head. Mine were loose. Its a good thing the solenoid was not in the right place. When turning the head of the starter I discovered this! Otherwise it has worked flawlessly so far.

Warren
March 2, 2017

Q&A

Q: What is the warranty for this starter part # c24st5? Does the warranty / replacement get filed with aircraft spruce or the manufacturer?

Hartzell has a 2 year warranty that covers manufacture defects and covers the whole unit if defective. The manufacturer handles the warranty claim.

Q: Do the ST5 starters turn clockwise or counter clockwise?

Clockwise when looking from the cockpit.

Q: Is the gasket included with these Sky tec ST5 series starters?

No, there is not a gasket as there is already an o-ring installed on the starter itself.

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