912 Prop Help

[Johnny C!]

Hey gang!

I've been researching props. Kiev's website
brags at how it will make it feel like you added
a turbo, But Warp Drives have rep for being
tough.

I want a ground adjustable.

Any thoughts & input will be appreciated.

John

[scubarider2]

As far as Warp goes for easy adjustable,,,,it is not.  Though I believe it to be the toughest on the market.  I have a 3 blade Warp and had one on my ultralight as well.  Have not regretted it.
Dennis

[stede52]

I've got the Kiev 3 blade and its a very well made hollow carbon fiber prop. Personally I really the visual of the curved blade and I have had no issues with the props performance. You can also order the brass leading edge which protects it from small rocks and rain.  Kiev also makes the nicest carbon fiber spinner I've seen in the market, the unfortunate thing is they only make it for the kiev props. The finish on the spinner is beautiful and the carbon fiber backplate is extremely stiff and has the spinner cone nut plates nicely glassed into the backplate. I've seen some really shotty jobs when it comes to the glass work and twice the cost. Adjusting the blades are probably no easier then the Warp Drive in fact I adjusted mine tonite and it took about 30-35 minutes. this is after I've done it a number of times previously.  I've gone to using a smart level when adjusting the blades to get the tolerance tighter between the blades which means a smoother running prop.  I will have to agree that the Warp Drive prop is probably the most bullet proof prop on the market but it is considerably heavier. As far as the easiest to adjust on the ground, that would be the Ivo. All seem to work pretty well on the Rotax.

Steve

[taildrgfun]

I have a Kiev and an IVO and I have hundreds of hrs on both. I prefer the IVO because it gives a wider range of speed for any given setting. The Kiev is much prettier and if you are not into short field stuff and just want a nice cruising prop then the Kiev is real nice. Or if you are really into short field stuff and you don't care about losing a bunch of cruise speed then it is also real nice, but it won,t do both nearly as well as the IVO.
Steve

[stede52]

Steve,
I agree the in flight adjustable is the best of both worlds but if you have a sport pilot license like lots of us we have to compromise by using a ground adjustable . lI really don't understand the reasoning behind some of these sport pilot rules.

Steve

[Roger]

Tail dragger fun Steve:

What did your Ivo cost you?

Roger

[taildrgfun]

A ground adj IVO will still give you a wider range of speed than the Kiev because of the way they flex.
I don't remember the price but I think they are the least expensive.

[Uwe Jens]

Hi Roger,

The Ivo prop in flight adjust ,at Aircraft Spruce (p/n 05-33210) costs $1060 on any diameter.

Regards Uwe/.

[Johnny C!]

Hey Guys!

I really appreciate the input.

I was really looking for a ground adjustable
just to eliminate another system.

I don't intend to be flying like you do Steve,
so the short field capabilities are not a priority.
I really am after the best cruise I can get.
I intend this plane to be an affordable commuter.
I can tell it hurts to Troy when I remind him of
that, and that makes me laugh, for some reason!

I typically assume that AS will not be the
cheapest, so I seldom look there.

I was leaning toward the WD for durability, but
the stinking aluminum spinner is $355!

Uwe,  The inflight that you mention for $1060
in AS is the ultralight prop. Are you suggesting
that it will work for the 912/Highlander?

The Kiev website, and the rest of them for
that matter, is a little cyptic. Which Kiev ground
adjust would you recommend?

Also, it was my undersatnding that the Warp
Drive props flex, and act somewhat like a
constant speed. So the Kiev does the same thing?

I have tried to get some input from Warp Drive's
sales department, but they won't respond, unless
I take the time to fill out their lengthy  questionaire,
which I have not done yet.

Also, I just confirmed my 912 is  2.27:1 ratio.

I wouldn't think it would be too difficult to choose
between  just three companies, but I would like to
this right the first time. I like Ivo medium for it's
simplicity, but I also like Steve's comment about
the Kiev being a little better for cruise.

Sorry to ramble & please make additional comments
as you can.

Thanks again!

John

[Uwe Jens]

Hi John,
Yes, the Ivo I mentioned before is the standard or for UL, this prop you can use on engines until 100 HP (ROTAX 912S).  From what I understand you own a Rotax 912 (80 HP), you could use it without a problem.  Many people here, use this prop since you can start with a ground adjustable pitch (cheapest) and as time goes thru you can buy the upgrade to convert the inflight adjustable.  As an example I´m attaching some pics on aircrafts with this prop,  some of this aircrafts are STOL (Colombian made ( 105 miles cruise speed)) and faster modellers like Magic GS 700 (125 cruise speed).  They all use the Ivo prop (70 inches diameter).  The reason is that this prop gives you more performance according to the cost.
Regards,
Uwe/.

[Uwe Jens]

John,
I´ve almost forgot! If your engine is Rotax 912 (80 HP) and you want to place a Warp Drive Prop, you need to put the slipper clutch in your engine, the reason is that the innertial mass from the WD prop is very high for your engine, this is the only inconvenience that WD props have, from the rest it is an excellent propeller, has a long durability and a high performance.  I personally use a Powerfin prop since is a very light prop and the innertial mass is very low and has wider blades which helps me at high altitude.  What you´ll need to find is a prop which will avoid problems on your gear box in the future.
Uwe/.

[stede52]

For the 100hp Rotax, Just Aircraft buys the Model #293, three blade 75".  I would call Just to make sure, I can't find my paperwork on my prop.

Steve
Carnation, WA

[Johnny C!]

Guys,
 I just sent the info request to warp drive, but from your
comments above, I'm leaning more toward the Kiev,
based on Steve's comments about it's cruise perfomance,
but the ground adjustable Ivo for $600 with a $40 spinner
sounds good, too, coupled with the ability to go in-flight,
later if I choose. I will concentrate my research efforts
on those two, for now.

Uwe, I had Lockwood add the clutch, just for giggles.

Steve,  Please elaborate on the Kiev being better for
cruise, if you don't mind.

Any additional comments are welcome.

Thanks again!

John

[stede52]

I'm still learning about my Kiev. With the new adjustments I've made I'm now cruising between 90-95mph at 5100rpms and 95-105mph at 53-5400rpm which for my kind of flying is just fine with me. The max rpms I can now get at climb out is 51-5200rpm where previously I would red line at climb out and when I told Troy that he suggested I needed more pitch. With that increased pitch I was concerned what it would do to my short field performance but that really hasn't changed much, other then the fact I can here the engine isn't reving as high, it still climbs out great.  I can take off and land in a 200-250' strip with no problems. I can't say it's the best cruise prop out there because I have only had the Kiev however, it has performed to my expectations and that is what counts.  I think you'd be happy with any of the three props, the decision on which one to buy is what's difficult  :lol:

Steve
Carnation, WA

[scubarider2]

I would suggest contacting Warp to discuss the custom "bend" they can put in the prop for you.  They will do this with the engine and airframe in mind.  That is what they did for me.  Along with a lifetime service from the factory you get, it is a good deal.
Just some thoughts,
Dennis