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Kiev prop

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Dick Maddux

Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl

Posted: Wed Dec 16, 2009 5:42 am Post subject: Kiev prop

Has anyone got an opinion on the Kiev prop on a 912UL in a Kitfox 4 ? I have seen several Highlanders that use this prop and they all seem happy with them. It is a beautifully made piece of art, that's for sure. I talked to the importer yesterday and he said I would gain a few mph in cruise and be able to slow the idle rpm down to around 1400 rpm on approach thus reducing my ground roll (kind of acts like a speed brake) The later would certainly be useful as I have had some problems getting the rpm low enough on approach with my Warp.

  I am just tossing this around in my head and would appreciate any opinions. 

                                                                 Dick Maddux

                                                                 Fox 4-1200

                                                                 912UL

                                                                 Milton,Fl 

  [quote][b]

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napierm(at)cisco.com
Guest

Posted: Wed Dec 16, 2009 3:00 pm Post subject: Kiev prop

Hey Dick,



I've got a Kiev 183 and spinner for my HKS but it hasn't flown yet.  As

you say, they are beautifully made.



I got this prop because it met the inertia requirements of the gearbox

and it has good performance in a Skyranger with the same engine/gearbox.

Also:

http://www.hks-power.co.jp/hks_aviation/Pilots/2009/09217/index.htm



Add speed in cruise?  Not sure about that.  The Highlander and Skyranger

aren't as fast as a Kitfox.  The prop is very light so maybe you can

slow down the idle.



If you really want speed brakes: doesn't a slipper clutch disengage when

the engine gets below some rpm?  If so, wouldn't the prop free-wheel to

some rpm based on the airspeed?  If true that will create tremendous

drag.  That is what happens in a Rotax C gearbox with a clutch

installed.  That's why I never wanted one.  What would happen to the

engine-out glide ratio?



BTW, what is the lead time now on Kiev props and blades?



Cheers,



Mark Napier



------------------------------------------------------------------------

----

Dick Maddux



Posted: Wed Dec 16, 2009 5:42 am    Post subject: Kiev prop   



------------------------------------------------------------------------

--------

 

Has anyone got an opinion on the Kiev prop on a 912UL in a Kitfox 4 ? I

have seen several Highlanders that use this prop and they all seem happy

with them. It is a beautifully made piece of art, that's for sure. I

talked to the importer yesterday and he said I would gain a few mph in

cruise and be able to slow the idle rpm down to around 1400 rpm on

approach thus reducing my ground roll (kind of acts like a speed brake)

The later would certainly be useful as I have had some problems getting

the rpm low enough on approach with my Warp. 

I am just tossing this around in my head and would appreciate any

opinions. 

? ? ? ? ? Dick Maddux 

? ? ? ? ? Fox 4-1200 

? ? ? ? ? 912UL 

? ? ? ? ? Milton,Fl

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Dick Maddux

Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl

Posted: Thu Dec 17, 2009 4:57 am Post subject: Kiev prop

Mark,

  I should have restated my question a little better. The real reason I am considering the Kiev is, I guess, is that it is beautiful. It looks like a prop should look sleek,smooth,polished,semi scimitar  The first time I saw one I said "wooohh,I like this....alot! 

  If course looks aren't everything but usually if it looks good it should fly good. Anyway my first three landings in my Kitfox after I bought the airplane were deadstick. The former owner had the idle set too low. I assure you the prop stops RIGHT NOW and won't freewheel. It's too light with little to no inertia.

  I now have the flight idle set about right .(1600-1800) It took a lot of fiddling to get it there and I really wouldn't bring it back to 1400 as that is too low.

  I don't know how backed up Kiev is on delivery as I am still in the thought stage. As stated earlier, my Warp is fine but that Kiev sure makes me salivate!

                                                     Dick Maddux

                                                     Fox 4

                                                     912UL

                                                     Milton,Fl

               Do not Archive

  [quote][b]

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