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Bolly Optima Series Four.

The Bolly Optima Series 4 props are folding propellers to suit applications such as powered (foot launch) hand gliders and power assisted gliders. First introduced in 2001, the prop has been very popular and remains a best seller.

Airtime Products: The BOS4 54 x 24 N L prop was initially developed and sold in conjunction with Airtime Products of Airlie Beach, Queensland, Australia. Airtime manufactured the popular 'Explorer', Radne powered hang glider (featuring our propellers). The production of the Explorer is now under new management. See http://www.airtimeproducts.com.au for more details.

We continue to supply and service anyone who wishes to purchase these popular propellers, including the (new) Airtime and any of the "original" customers.  Please Note : We are not in a position to offer technical support re engine / gearbox / prop combinations (we are prop manufacturers who fly bigger machines).

Also see our BOS1 (one piece) propeller information sheet.

The Right Hand version of the folding propeller is now available.



Blade Information & Pricing.

The below prices are A$ retail only, including gst. For gst exempt export, deduct 1/11th.

Product Code Description A$ Retail
BOS4 54 x 22 N L 54 x 22 Narrow LH - (single) 'folding' blade $250.00
BOS4 54 x 22 N R NEW 54 x 22 Narrow RH - (single) 'folding' blade $250.00
BOS4 Hub Assembly For use of above blades on Explorer set up $300.00
BOS4 Complete Prop Hub assembly plus 2 @ above blades $800.00

Currently we are out of stock of the hubs. See Airtime Products.