Are these props similar?

[vvviivvv]

Propshop CRC/4518/3/RH/SS i am only guessing here but 45mm diameter 18 pitch 3 blades right hand rotation stainless steel... are they the same as ABC 1816/3 in size?

They also do GP/4714/2/RH/SS which is 47mm diameter 14 pitch 2 blade... are these the same as octura x447's?

CRC = (i think) Cleaver & R/C Hydro

GP = General Purpose will both of these be ok on a cat? the 3 blades for saw?

[sailr]

14mm pitch wouldn't move anything!
I suspect that the 14 in 4714 means 1.4. The formula is to multiply the diameter (47mm) by the pitch factor (1.4) yielding a pitch of 65.8mm. This would be the same as an Octura 447/3

I don't know anything about ABC's numbering system. Sorry.

Propshop CRC/4518/3/RH/SS i am only guessing here but 45mm diameter 18 pitch 3 blades right hand rotation stainless steel... are they the same as ABC 1816/3 in size?

They also do GP/4714/2/RH/SS which is 47mm diameter 14 pitch 2 blade... are these the same as octura x447's?

CRC = (i think) Cleaver & R/C Hydro

GP = General Purpose will both of these be ok on a cat? the 3 blades for saw?

[vvviivvv]

OK, ill order them and if there no good - they can be for when the boat is on display lovely shinny stainless steel

[vvviivvv]

I've been told the 4714/2 are a different blade shape than the octura x447 what does this mean?

[sailr]

Here's an explanation of the different Octura props. I don't know squat about the other brands.

Different types of Octura props

12 are low lift ideal for submerged drive
X4 are medium lift general purpose props
M4 are like X4 but with the tongues removed to unload the prop
Y are like X series but have 10% more pitch
X5 are general all purpose med lift prop
X6 are higher lift than X4 and suitable for surface/semi surface use
14 are moderatley high lift for hydros and deep V's
16 are high lift props for riggers and hydro's
17 are the highest lift prop for riggers and outboards
P7 are similar to 17 series but more rake and less lifti
19 are high lift for riggers and hydro's
V9 are moderate lift suitable for riggers, hydros and SAW racing
20 are moderatley high lift suitable for riggers
21 are high lift for riggers and hydro's 22 are high lift surface drive only good straight line speed

[Darin Jordan]

ABC Numbering on that prop series (1816) works like this:

XXYY

XX = Diameter in Inches
YY = Pitch Ratio

An 1816 would be 1.8" in Diameter with a 1.6 Pitch Ratio... and a pitch of 1.8" x 1.6 = 2.88"

Pretty straight forward...