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Precision Parts
and Tools

Products

Jumbo Alternator Pulley

Replacement pulley for 15mm shaft Denso-style alternators. Reduce alternator speed on your Lycoming by roughly 30% to extend bearing and component life.

Machined billet aluminum, clear anodized. Fits 3/8" or 7/16" belts. 3.7" diameter.

Cable Roll Tool (0.060–0.065")

Make perfect rolled cable ends in tight spaces. Truly the best way to attach solid wire controls. Set screws are fundametally flawed and easily come loose. Attach with single AN3 bolt and a 1/4" tube bushing.

Carbon fiber reinforced nylon 3D printed.

Cable Roll Tool (0.070–0.078")

Make perfect rolled cable ends in tight spaces. Truly the best way to attach solid wire controls. Set screws are fundametally flawed and easily come loose. Attach with single AN3 bolt and a 1/4" tube bushing.

Carbon fiber reinforced nylon 3D printed.

Lycoming Case Splitter

Gently press apart your case without touching the crankshaft or ruining your studs.

Steel welded fixture. Fits most engines with 7.125" bore spacing, O-290, O-320, O-360, etc.

Cylinder Head Stiffener

Add structure to your engine and balance heat between cylinders.

Machined billet aluminum, clear anodized. Fits Lycoming 4 cylinder parallel valve engines with 7.125" bore spacing, O-290, O-320, O-360, etc. Uses an o-ring seal.

Subject to tariff price increases.

Spring Gear Lift Fixture

Gently and quickly lift your plane with a floorjack.

Uses a simple rubber friction interface. Works with flat profile spring gear.

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    For inquiries or questions, please email: taz@zelwing.net

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