There at Daves Store is 61-85 the biggest. (61 mm diameter)
It has 1,39 pitch
You can find at Ianboats.co.uk bigger FSR props
I think just you could make a 3 blade prop from ABC 2314 Chopper...
Toys'Port P51 Mustang from our small size RC Gas Spark Plug
I have a lovely Gift for your workroom, office table or anywhere.
It's laser cut and laser-welded from 1,5 mm stainless plate. (the prop is from 1 mm hardened stainless plate)
This little project was inspired by this thread too...