Blade 1 Blade 2 Radius Pitch Pitch (in) Radius (mm) Station (degrees)

Transcription

1 #P Doroshenko Transparent red, fiberglass-epoxy, embedded paper label: Seryogin Obtained from: Viktor Yuvenko, July 2004 Viktor said these would be good for use with Cyclons. With Foras and Kozjols they need to be trimmed down to 150 mm or so. Pitch is quite high, might be OK for a torquey engine such as the AKM. Pitch Pitch Tip

2 Chornny Green Transparent green, fiberglass-epoxy Obtained from: George Cleveland, 2002 This is the prop commonly recommended for Fora engines. Turns 29,000 or so on my Foras. Pitch Pitch Tip

3 Cyclon(?) brown prop Transparent parts are a light brown, has visible dark brown fibers (aramid?) running through the prop. Quite stiff, have not run them yet. Lester says he trims them down some for use on Foras. Obtained from: Lester Haury, 2004 Got two of these when I bought two used Foras from Lester. He says they came from the people selling the Cyclon engine. Pitch Pitch Tip

4 Profi violet Transparent violet pink. Blades are somewhat flexible. Obtained from: Richard Ong, 2004 These are supplied with the new 2004 Profi engine. Apparently not from the same mold as the brown prop. Pitch Pitch Tip

5 Moscow #1 Glass/Carbon. High proportion of carbon. Obtained from: George Cleveland, 2002 Recommended prop for Kozjol. Very widely used when Kozjols were common. Pitch Pitch Tip

6 #P67 (Yuvenko) Transparent green, fiberglass-epoxy, darker than Chornny Green. Engraved "B" on blade cuff. Obtained from: Viktor Yuvenko, July 2004 I think this prop is essentially identical to the Chornny Green props George Cleveland was selling. Recommendation was to use these props in "hot, dry weather". Pitch Pitch (mm Tip #67 (left) and Chornyy Green (right). Note similarity of isoclines (on opposite blades).

7 #P1 (Yuvenko) Light orange, glass/epoxy, pronounced sweepback, four examples have "Seryogin" printed on a piece of paper embedded in the resin. Obtained from: Viktor Yuvenko, July 2004 Pitch Pitch Tip

8 Molteni Blue Transparent glass/epoxy, smaller hub than Chornyy green, more "droop". Engraved "GP and "NA" on blade cuffs. Obtained from: Adriano Molteni, Singapore, October 2005 Pitch Pitch Tip

9 #P4 (Yuvenko) Dull, dark green, milky opaque. Glass/epoxy. Obtained from: Viktor Yuvenko, July 2004 Viktor suggests this prop is good for "less hot" weather, as well as hot and damp conditions. Pitch Pitch Tip

10 Syeryegin Red Red-orange, transparent glass/epoxy. Has piece of paper with "Серегин" (Seryogin?) typed on it, embedded in epoxy. Obtained from: Nosfanisia, Bandung, November 2005 Obtained from someone in Lithuania Pitch Pitch Tip

11 Chornyy purple Transparent royal blue glass/epoxy. Obtained from: Benny Limanhadi, Bandung, November 2005 Obtained from Chornyy Pitch Pitch Tip

12 Moscow #5 Carbon/glass/epoxy, epoxy undyed, carbon limited to a few spanwise strands. Obtained from: Suranto, Bandung, November 2005 Obtained from Mezjlik Modellbau Pitch Pitch Tip ,

13 Faizov Carbon/glass/epoxy, epoxy undyed, large carbon content, including bidirectional cloth on underside. Obtained from: Nosfanisia, Bandung, November 2005 Obtained from someone in Lithuania. Very consistent between the two blades. Relatively high pitch. Pitch Pitch Tip

14 Yuvenko Light Blue Pale powder blue, opaque, presumably glass/epoxy. Obtained from: Suranto, Bandung, November 2005 Obtained from Yuvenko in the Ukraine. Very consistent between the two blades. Caution: Three examples of this prop have shed blades, resulting in shaft runs. Engines were Cyclon PC-6. Looks like #P4 but is quite different (more pitch). Might have been made using the same techniques, however. Pitch Pitch Tip