SOLO G.A.P Propellor Specifications

Hub Components:

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
Max. Prop RPM = 576000
3.14 X Diameter of Propeller in Inches
Max. Prop Diameter in Inches = 576000
3.14 X Max. Operating RPM