One of THE most vital tools in your toolbox if you are serious about big gas motors - no Prop on any plane 100cc and larger should be tightened by hand. Torquing the prop bolts ensures even pressure is applied across the prop hub holding the prop firmly in place. Uneven torque when done by hand can place enormous stress on individual bolts and cause them to fail with severe consequences when in flight.

We have been Torqueing our props for years now and have never had any failure in the time we have been doing so. wood props will compress over time so check these regularly.

5mm bolts - wood props 50 inlbs ( check bolts periodically)

5mm bolts - Carbon props 90 inlbs

6mm bolts - wood props 60 inlbs

6mm bolts - carbon props 100-120 inlbs

FEATURES

Accuracy: +/-3% of reading exceeds all international standards for torque wrenches. Each wrench is supplied with a traceable calibration certificate.
Micrometer Scale for simple and error free setting. (On dual scale wrenches, the micrometer increment applies to the N·m scale.)
Quick and Light Adjustment: adjustment over the entire scale can quickly be achieved and with minimal effort in approximately ten complete turns (exact number varies by model).
Comfortable, Durable Handle: the handle is constructed using two materials; a base material for strength overlaid with a soft feel grip for comfort and slip resistance.
The handle material and lens resist chemicals in common usage in the automotive, aviation and industrial environments.

TECHNICAL SPECIFICATION