4 blade cf props

[Greg Hart]

Who makes good 4 blade CF props?

[Mark Scarborough]

Greg,
why a 4 blade,, and what size,, I have a 4 blade CF prop I wont use,,

[Steve Helmick]

For CF props, I'd check with Randy Smith, Alan Resinger, Bob Whitney and Eliminator Props (see Vendor's forums) in no particular order. I know Randy had a few sizes of 4 blade CF props at one time...doubt about the others. Brian Eather might...ask Alan about that. Three blades are easier to source!  Steve

[Greg Hart]

Mark, going on a spitfire using a RO-jet 61 Not sure what size 4 blade would work best??

[Doug Moon]

Your max dia will probably be 12" but you may end up with a happier motor on 11.75" dia with 3.75-4-4.25 pitch range.  I used to run Eather 4 blades for a long time and 12x3.5 was an awesome prop.  I have another with 3.5 pitch and can't get anything else to fly on it.  Not much traction. 

[Paul Taylor]

Some Supermarine Spitfire's used 3 blades.

[bill rutherford]

The very first spitfires used two blade props Wood I think. Bill Rutherford

[Mike Keville]

The very first spitfires used two blade props Wood I think. Bill Rutherford

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True.  Spit' Mk. I - two-bladed wooden props.

[bob whitney]

it would take about $40 for mold material and the frame for a 12 in 4 blade prop plus  2 props to make the master

[Trostle]

Some Supermarine Spitfire's used 3 blades.

And some Spitfires used 5-blade props and there were some Seafires that had two three-blade counter rotating props.

KT

[Mark Scarborough]

Greg, Private message me, or email me

[MarcusCordeiro]

Kaz Minato has them...
Here's one on the nose of my friend Rafael's Trivial/PA 65

Marcus