Replies to This Discussion

Permalink Reply by Doug Dugger on October 26, 2010 at 11:13am

Tom I am useing the whirlwind 2 blade ground adjustable prop it seems to work extremely well. took off my warp drive and increased the cruise to a easy 120-125 mph it wil go faster but takes more gas check it out at the whirlwind sight. This is on my 601xl with cont. 0200. Also have the same on my ch750 with jab. power

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Permalink Reply by Tom Wang on October 29, 2010 at 10:33am

Thanks Doug

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Permalink Reply by Tom Wang on March 12, 2012 at 3:14am

Dear Doug Dugger,

I am planning to mount my O200 to my ch750, but has no accessories parts, where did you buy all the accesories?

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Permalink Reply by Chris Aysen on October 26, 2010 at 11:20am

Tom - Money no object; Sensenich composite 2 or 3 blade ground adjustable large diameter..... Money tight; Warp Drive 3 blade ground adjustable minimum 70" diameter. Prop diameter (large) is key on a STOL aircraft. My opinion.

Chris

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Permalink Reply by Tom Wang on October 29, 2010 at 10:34am

My budget is under $1500, thanks for your suggestion.

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Permalink Reply by Jim Derickson on October 26, 2010 at 7:20pm

Tom, I am using the Whirlwind ground adjustable composite prop on my 750. I wanted to be able to change pitch and save weight. It weighs 12 lbs complete, good luck with it, Jim

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Permalink Reply by Tom Wang on October 29, 2010 at 10:36am

How much for it? 3 blades? I am interested in it, if we make a comparison is it better than warp drive?

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Permalink Reply by Ghazan Haider on October 28, 2010 at 12:42pm

Hi Tom,

I too have an O-200A for my CH750. I bought a W72CK44 which seemed like a good fit. Had a chat with Sensenich on this.. The CK wood props are for A65 type engines, not for the C90 or O200. However, it should still work and reliably so, just not the absolutely perfect prop for the O200. His suggestion was the W72GK44 for the middle-of-the-road prop (make it 46 or 42 for climb/cruise prop). He also suggested the adjustable composite for maybe $3000 (on sale for less than that elsewhere): 2EK-C72AE4. The person I talked to was Steve and we spent a good 20 min on the phone.

I bought my W72CK44 from a souped-up Citabria owner at $850. I'll put it on and fly for a while before forking out for maybe the composite. I think the understanding for STOL is to have longer blades without getting too close to the ground (vs 3 short blades).

Looking at your picture, you have a cover on the vacuum pump slot. Do you have a part number you can read off it? I need that part and can't find the part number, have checked the continental docs...

Keep us updated on the prop/engine developments...

-Ghazan

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Permalink Reply by Tom Wang on October 29, 2010 at 10:31am

Thanks a lot Ghazan, I have a composite 3 blades ground adjustable, but the prop hub does not fit o200 engine.
I was thinking a 2 blades aluminum alloy prop would be more stronger than the composite in some extend.
I have checked my o200, the cover printed 628018, the same as Roger replied.

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Permalink Reply by Ghazan Haider on October 29, 2010 at 6:11pm

In the above picture, what strikes me is that there is no vacuum pump adapter, the one that turns at an angle. I thought this part number is attached to the vacuum pump adapter, but the picture shows no vacuum pump adapter, this is a relatively rigid plate replacing it. I'm glad Tom confirms it, I'll make sure I order this part No.

I've heard the merits of both removing the vertical gear and not removing it. If the cover seals it well, I'll remove the gear (engine currently has been drained) else I'll leave it in there.

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Permalink Reply by Chris Aysen on October 29, 2010 at 11:38am

Tom - Just a note from my research and experimental study. Length of the cord on a prop plays a major role into what length(diameter) the prop would have to be to get it's maximum efficiency.

Chris

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