This is a Vortech 2-1/4" Aluminum Two-Blade Spinner from Dave Brown.
FEATURES: Light-Weight Aluminum Construction
Polished Aluminum Color
Includes Four Plastic Backplate Bushings, So The Backplate Will Fit
Securely Around Any Ordinary Crankshaft
Designed for Two-Bladed Props
INCLUDES: One Two-Blade Aluminum Spinner and Backplate
One 5x12mm Cap Screw
Four Plastic Backplate Adapter Bushings
REQUIRES: Vortech Adapter Nut (see COMMENTS)
4mm Allen Wrench (for the cap screw)
SPECS: Width: 2-1/4"
Weight: 1.5 oz.
COMMENTS: To Match the Adapter to the Engine, the Modeler Must Use:
1/4-28 DAVQ8428: for OS .25-.60, Supertigre .25-.60, Fox .19-.50,
Enya .25-.53, K&B .19-.65, OPS .40-.60
5/16-24 DAVQ8524: for OS .61-.90, Supertigre .61-.90, Fox .60-1.2
7x1.0mm DAVQ8710: for Enya .35-.60, .60-1.2 Four Strokes
(Non R Engines)
8x1.0mm DAVQ8810: for YS .90-1.2 4-Stroke, Enya 1.2R 4-Stroke,
OPS Super .60 and .61 5-Port
8x1.25mm DAVQ8812: for All YS 2-Stroke
The Stock Numbers Above Are For the Short Adapters.
The Long Adapter is Only Required on Spinners Larger than 2-1/2".
It is best to use the Longest Adapter Nut that Will Fit.