4 bladed 20" x 10" prop anywhere?

[DavidHarrison]

I'm looking for a 4 bladed 20" x 10" prop, very quiet, preferrably carbon fibre. Does anyone know where these can be obtained? I've searched all the usual model plane prop vendors with no luck. The nearest I've come is a 3 blade prop. from Air Models (Desert Aircraft).

Thanks.

[thunder1]

Zinger and Solo make large four bladed prop hubs. The blades are wooden, though.

http://www.zingerpropeller.com/4_bladed_propeller.htm

http://www.soloprops.com/catalogue/catalogue_hubs.htm