SOLO G.A.P Propellor Specifications

Construction:

• Machined from aircraft grade aluminum and brass bar stock on CNC lathe and machining centers. Will accommodate any Solo G.A.P. propeller blades.

Material:

• Aluminum Components - 2011-T3
• Plastic Components - Flange Bushings
• Stainless Steel - Hex Head Cap Screws
• Plated Steel - Washers and Extension Nuts

Tolerances:

• All dimensions +/- 0.001" (0.025 mm)

Pitch Range:
Blade Retention:

• Maximum fine to maximum coarse settings = 28 degrees by rotating a calibrated dial.
  integral aluminum retaining ring (internal). Two 6 - 32 x 3/8" S.S. Cap screws per blade (external).

Prop Mount:

• Single extension nut: 3/4" (19 mm) head with 13mm shank, internal thread to match engine crankshaft thread OR adapter for mult-bolt pattern mounting system.
  Extension Stud to replace single bolt propeller mounting system.

Torque Requirement:

• 2 Blade Prop - 10 ft/Ibs
• 3 Blade prop - 12 ft/Ibs
• 4 Blade prop - 13 ft/Ibs

Weight:

• 2 Blade Synchronized - 134g (4.75 oz.)
• 3 Blade Synchronized - 212g (7.5 oz.)
• 4 Blade Synchronized - 252g (9.0 oz.)
• 6 Bolt mounting pattern adapter - N/A

Test Data:

• no sign of stress or fatigue at point of blade destruction; 5300 Ibs (2400K's) centripetal load

Blade Components:

Construction:

• Blade section - machined on an electronically controlled carving machine and then hand finished.
• Root section - turned on a precision modified wood lathe
• Clear coat - High grade polyurethane
• Actuator Pin - press fit laminated into root end for pitch adjustment
• Prop blades - will fit any Solo G.A.P. propeller hub.

Material:

• Propeller blades are machined from clear premium grade eastern maple (sugar maple or rock maple) kiln and air dried to specifications.

Tolerances:

• Root: +/- .002" all dimensions
• Balance: +/- .05g at the tips
• Tracking: +/- .09" tip to tip
• Angle: +/- 1/4° blade to blade

Weight:

• weight (per blade): 16" = 43 grams ( 1.5 oz.) (for longer blades add 7 grams or 0.25 oz. per inch)

Test Data:

• Blade loading (centripitel force)
• Yield; 4850 Ibs (2,200Kg) Failure 5,070 Ibs (2,300Kg)
• Test Results demonstrate a consistant Safety Factor of 3.5 @ Maximum

• Prop RPM:

Design Parameters:

• Solo G.A.P. Prop Assemblies are designed for use on Model Airplane Engines from 1.0 cubic inch (16.4c.c.) and up