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KTans
Joined: 09 Nov 2008
Posts: 6
Location: Arlington Heights, IL
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 Posted: Mon Jan 26, 2009 2:46 pm Post subject: Warp Drive Prop - Taper? |
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I'm planning to use 68" 3-Blade Warp Drive prop for my 601XL, powered by the Stratus Subaru EA-81. I'm considering to pay a little extra for the tapered tips as I understand they will have better cruise efficiency. But I wonder what adverse effect to expect during take-off thrust etc. Does it makes sense to taper then?
If anybody has experience with this, and also suggestions for best blade pitch for my configuration, please let me know. I'm sure this has been discussed many times but I'm still learning how to search posts accurately (sorry).
Thanks in advance!! Kevin T.
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_________________
Kevin J. Tansor
601XL, Subaru EA81/Stratus...
Target for completion: Spring 2009
Private Pilot, ASEL.
Gyrocopter Pilot/in training |
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bryanmmartin
Joined: 10 Jan 2006
Posts: 1018
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| Posted: Mon Jan 26, 2009 3:13 pm Post subject: Warp Drive Prop - Taper? |
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I have the same setup as you, the prop is pitched to get just shy of
red line in straight and level flight. I don't recall what the pitch
is in degrees. At a take off weight of around 1200 pounds on a
standard day at 700 feet MSL, I get close to 1000 feet per minute
initial climb at about 65 mph. Top speed with wheel pants is around
125 mph CAS.
| Quote: |
I'm planning to use 68" 3-Blade Warp Drive prop for my 601XL,
powered by the Stratus Subaru EA-81. I'm considering to pay a little
extra for the tapered tips as I understand they will have better
cruise efficiency. But I wonder what adverse effect to expect during
take-off thrust etc. Does it makes sense to taper then?
If anybody has experience with this, and also suggestions for best
blade pitch for my configuration, please let me know. I'm sure this
has been discussed many times but I'm still learning how to search
posts accurately (sorry).
Thanks in advance!! Kevin T.
--------
Kevin J. Tansor
601XL, Subaru EA81/Stratus...
Target for completion: Spring 2009
Private Pilot, ASEL.
Gyrocopter Pilot/in training
|
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
| | - The Matronics Zenith601-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith601-List |
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_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive. |
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KTans
Joined: 09 Nov 2008
Posts: 6
Location: Arlington Heights, IL
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| Posted: Mon Jan 26, 2009 3:52 pm Post subject: Re: Warp Drive Prop - Taper? |
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Hey Bryan,
That's very helpful, Thanks!
Are you using the tapered prop tips?
Kevin T.
| | - The Matronics Zenith601-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith601-List |
|
_________________
Kevin J. Tansor
601XL, Subaru EA81/Stratus...
Target for completion: Spring 2009
Private Pilot, ASEL.
Gyrocopter Pilot/in training |
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| Back to top |
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bryanmmartin
Joined: 10 Jan 2006
Posts: 1018
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| Posted: Mon Jan 26, 2009 3:58 pm Post subject: Warp Drive Prop - Taper? |
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Yes
| Quote: |
Are you using the tapered prop tips?
|
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
| | - The Matronics Zenith601-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith601-List |
|
_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive. |
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KTans
Joined: 09 Nov 2008
Posts: 6
Location: Arlington Heights, IL
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| Posted: Mon Jan 26, 2009 4:11 pm Post subject: Re: Warp Drive Prop - Taper? |
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Thanks Bryan!
PS: I just found the pic's of your plane at www.alexisparkinn.com ... well done, nice job on the panel!!
| | - The Matronics Zenith601-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith601-List |
|
_________________
Kevin J. Tansor
601XL, Subaru EA81/Stratus...
Target for completion: Spring 2009
Private Pilot, ASEL.
Gyrocopter Pilot/in training |
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larry(at)macsmachine.com
Guest
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| Posted: Mon Jan 26, 2009 7:18 pm Post subject: Warp Drive Prop - Taper? |
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Hi Kevin,
I've a 70-inch Warp Drive and a Stratus Subaru EA 81 and now use a
17-degree pitch. In the beginning, I flew with a 15-inch pitch and
worked it up to the best
cruise efficiency in three changes. Probably best to begin with a
15-1/2-degree which will give you a huge climb and modest but adequate
cruise to begin with.
I'm really keen on the Stratus and the Warp Drive with tapered blades.
Really smooth!
My site journal has a good deal of information on the Stratus, jetting,
EGTs and test flying the aircraft. Do check out the engine page and the
electrical page
as they also convey things you might find interesting.
Best regards,
Larry McFarland 601HDS at www.macsmachine.com
KTans wrote:
| Quote: |
I'm planning to use 68" 3-Blade Warp Drive prop for my 601XL, powered by the Stratus Subaru EA-81. I'm considering to pay a little extra for the tapered tips as I understand they will have better cruise efficiency. But I wonder what adverse effect to expect during take-off thrust etc. Does it makes sense to taper then?
If anybody has experience with this, and also suggestions for best blade pitch for my configuration, please let me know. I'm sure this has been discussed many times but I'm still learning how to search posts accurately (sorry).
Thanks in advance!! Kevin T.
--------
Kevin J. Tansor
601XL, Subaru EA81/Stratus...
Target for completion: Spring 2009
Private Pilot, ASEL.
Gyrocopter Pilot/in training
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 26939#226939
|
| | - The Matronics Zenith601-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith601-List |
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KTans
Joined: 09 Nov 2008
Posts: 6
Location: Arlington Heights, IL
|
| Posted: Mon Jan 26, 2009 7:47 pm Post subject: Re: Warp Drive Prop - Taper? |
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Hi Larry!
How's the flyin? I purchased one of your radiator intakes and louver sets etc a while back (Thanks again!). Spring '09 I'll be wrapping things up and out on the runway (OK ... taxiway).
Thanks a bunch for the info on the prop angles, sound like a very logical sequence to try out.
-Kevin
| larry(at)macsmachine.com wrote: | Hi Kevin,
I've a 70-inch Warp Drive and a Stratus Subaru EA 81 and now use a
17-degree pitch. In the beginning, I flew with a 15-inch pitch and
worked it up to the best
cruise efficiency in three changes. Probably best to begin with a
15-1/2-degree which will give you a huge climb and modest but adequate
cruise to begin with.
I'm really keen on the Stratus and the Warp Drive with tapered blades.
Really smooth!
My site journal has a good deal of information on the Stratus, jetting,
EGTs and test flying the aircraft. Do check out the engine page and the
electrical page
as they also convey things you might find interesting.
Best regards,
Larry McFarland 601HDS at www.macsmachine.com
KTans wrote:
| Quote: |
I'm planning to use 68" 3-Blade Warp Drive prop for my 601XL, powered by the Stratus Subaru EA-81. I'm considering to pay a little extra for the tapered tips as I understand they will have better cruise efficiency. But I wonder what adverse effect to expect during take-off thrust etc. Does it makes sense to taper then?
If anybody has experience with this, and also suggestions for best blade pitch for my configuration, please let me know. I'm sure this has been discussed many times but I'm still learning how to search posts accurately (sorry).
Thanks in advance!! Kevin T.
--------
Kevin J. Tansor
601XL, Subaru EA81/Stratus...
Target for completion: Spring 2009
Private Pilot, ASEL.
Gyrocopter Pilot/in training
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 26939#226939
|
|
| | - The Matronics Zenith601-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith601-List |
|
_________________
Kevin J. Tansor
601XL, Subaru EA81/Stratus...
Target for completion: Spring 2009
Private Pilot, ASEL.
Gyrocopter Pilot/in training |
|
| Back to top |
|
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