X or Y prop?

[HEADRIPS]

Can someone tell me the diff between x and y props? I have one of each, but they look the same to me.

[Ron Olson]

Maybe this wil explain it all to you:
The Octura Propeller Definition Table SERIES USES CHARACTERISTICS NOTES 0900 Scale boats. Submerged drive Low pitch prop. Blade area loaded toward the tip of the blade 0937/3 has 1/8" shaft. Electric scale - e.g. 40" Dumas ChrisCraft w/700bb & 0937/3 1200 Submerged, electric, heavy hull 1300 3.5cc mono. Submerged drive Low lift. Blade area loaded toward the tip of the blade Nitro 1400 Surface drive Medium levels of lift. Blade area weighted toward the tip of the blade. Nitro Suits heavier hulls. X400 General purpose prop mono tunnel hydro Low lift Light loading at the tip of the blade .125" shaft for DD 05’s. To 47mm in geared/large electrics. The mono/tunnel prop. Also on hydros X600 General purpose mono tunnel hydro Tip squared to increase loading across the outer blade As for X400’s M-Series General purpose lighter running hulls The x series with a trimmed tongue 47mm popular with Aveox 1412 & 12 cells Y series As for x series, monos, tunnels The x-series with 10% extra pitch through the blade 35mm on neodymium motors 6 cells 1500 A do-it-yourself prop Low lift/high rake prop. Large blade area. Limited diameters. Designed to be customised A rarity in electrics 1600/1800 Riggers, hydros A medium-high lift prop. 1800 has higher pitch ratio Mainly nitro 1700, 1.25 1.6, 1.8, 2.0, 2.4 Outboard riggers, hydros, 4 cell hydros Highest levels of lift in Octura range No rake on trailing edge 1/8" shaft for direct drive electrics, Larger sizes on geared 8 cell plus hydros. Popular for Saw’s P-series Riggers hydros A 1700 with less lift due to increased rake in trailing edge P747 popular for 12 cells 1900./2200 Riggers Hydros Medium lift. Offset blades. Gear driven - high torque motors - rare V900 Outrigger/hydro - SAW Medium lift Very low loading at the tip of the blade Suited to light boats and high revving motors. 3 blades provide adequate area for thrust Popular at saw particularly with geared or neodymium magnet motors 2000/2100 Outrigger/hydro High lift props Originally designed for geared electrics 1/8" shafts on 2132 and 2135 for direct drive car motors. Used successfully in 4 cell SAW

[HEADRIPS]

:confused: whoa! information overload! Thanks, Ron, but now I'm even more confused....

[Ron Olson]

Yeah, me too! I asked on another site about the props that normally aren't used or seen from Octura and this was e-mailed to me. You have to read it carefully as lot of stuff is crammed together. I don't now when this was written because so much has changed with new electric motors and higher HP and RPM Gas and Nitro engines. Octura has a lot more props coming out soon, I'm trying to get an updated list.
I think what it says is that the "Y" series has a little less tongue area and medium lift characteristics where an "X" series has a low lift.

[Hydro Junkie]

Just did a web search on Octura props. The only thing I could find was a statement that the X series was a general use prop. I could find nothing on the Y or the Z series. I found a site that is a homemade catalog and went to the prop recommendations. I found NO MENTION of the Y or the Z series anywhere :eek: Guess we'll have to keep looking :(