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Anybody here have a CH701?



 
 
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  #1  
Old May 13th 04, 06:29 AM
Regnirps
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Default Anybody here have a CH701?

I keep looking at teh web site and owner's sites. I wish the cruise was a
little higher and when you check out the full deflection maneuvering speed you
have to wonder how stron it is.

There is also the pegasthol wing with pressure actuated slats. Higher cruise
but they have some kind of argument with Zenair and it is tough to get hard
facts.

-- Charlie Springer
  #2  
Old May 13th 04, 07:23 AM
Jari Kaija
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I keep looking at teh web site and owner's sites. I wish the cruise was a
little higher and when you check out the full deflection maneuvering speed

you
have to wonder how stron it is.



http://www.zenithair.com/bldr/7-bldrs.htm

-Jari
http://www.project-ch701.net


  #3  
Old May 13th 04, 11:21 AM
Kevin Horton
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On Thu, 13 May 2004 06:29:55 +0000, Regnirps wrote:

I keep looking at teh web site and owner's sites. I wish the cruise was a
little higher and when you check out the full deflection maneuvering speed
you have to wonder how stron it is.


Well, the manoeuvring speed (VA) is a function of:

wing loading (low wing loading leads to lower VA),
maximum coefficient of lift of the wing (high CL max leads to lower VA),
design load factor (low design load factor leads to lower VA).

The CH701 is designed to have short take-off and landing distances, so it
needs low wing loading and a high CLmax. It isn't designed for
aerobatics, so it can get away with a lower design load factor. A higher
design load factor would require a heavier structure, which would worsen
the performance.

The Zenair web site says it is designed for +6g ultimate load. It is a
bit unusual for the manufacturer to quote ultimate loads, as that
represents the ultimate strength of the airframe - i.e. the point at which
it may fail catastrophically. Normally a 1.5 factor of safety is applied,
and the limit load (4g in this case) is quoted, as that is the value that
the pilot should use as his load factor limit.

--
Kevin Horton RV-8 (finishing kit)
Ottawa, Canada
http://go.phpwebhosting.com/~khorton/rv8/
e-mail: khorton02(_at_)rogers(_dot_)com

  #4  
Old May 13th 04, 04:31 PM
JohnT.
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This doesn't really answer your question, but...

I too at one time wanted the 701. It could be plans built, easy to get
materials, easy fasteners, sport pilot eligible, etc. The downside was
the low cruise (real world was lower than factory claim, no surprise)
and lack of baggage space. I had a set of plans, materials, and tools,
but I later switched to a Bearhawk (4 place taildragger)

Plans built was one of the major factors in deciding what to build. The
problem is that a lot of these planes in this class (2 place, side by
side seating, SP eligible, etc) are offered as kits only. Kitfox, Avid
flyer, and so on. If someone could offer a plans built plane in this
same class but with decent cruise, I'd have considered it.

In the same vien, I like the ridgerunner type planes too. Two place
tandem, folding wings, decent cruise for their size (definitely a local
plane), and really fun looking plane. Too bad nobody offers these in
plans built either.

John

  #5  
Old May 14th 04, 12:56 AM
Dave Hyde
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Default

Regnirps wrote:

...when you check out the full deflection maneuvering speed you
have to wonder how stron it is.


A high-lift wing is going to have a lower Va than a cruise wing
for a given g-limit. That's just physics. Working the stall
(34-38 kt) and Va (75-78) numbers I get something like a 4g
operating limit, which is in keeping with the published 6g ultimate
limit. Seems strong enough to me, if real-life matches advertising.

Dave 'corner speed' Hyde

  #6  
Old May 14th 04, 01:04 AM
Dave Hyde
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Default

JohnT wrote:

In the same vien, I like the ridgerunner type planes too. Two place
tandem, folding wings, decent cruise for their size (definitely a local
plane), and really fun looking plane. Too bad nobody offers these in
plans built either.


I'm not sure what examples you're referring to here, but
a Thorpe T-18 with the folding wing mod would seem to meet all the
requirements. Plans-built, even. Are you talking about some
other type?

Dave 'beer cans down' Hyde

  #7  
Old May 14th 04, 03:19 AM
David
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Default

Check out the Savannah, Very similar and better cruise - They are bringing
out a new wing too... 40ish stall and 130 cruise..
"Regnirps" wrote in message
...
I keep looking at teh web site and owner's sites. I wish the cruise was a
little higher and when you check out the full deflection maneuvering speed

you
have to wonder how stron it is.

There is also the pegasthol wing with pressure actuated slats. Higher

cruise
but they have some kind of argument with Zenair and it is tough to get

hard
facts.

-- Charlie Springer





-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----
  #8  
Old May 14th 04, 03:36 AM
John Ammeter
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Default

Tell me more...

Where can I find data on the "Savannah"?

John

On Thu, 13 May 2004 22:19:17 -0400, "David"
wrote:

Check out the Savannah, Very similar and better cruise - They are bringing
out a new wing too... 40ish stall and 130 cruise..
"Regnirps" wrote in message
...
I keep looking at teh web site and owner's sites. I wish the cruise was a
little higher and when you check out the full deflection maneuvering speed

you
have to wonder how stron it is.

There is also the pegasthol wing with pressure actuated slats. Higher

cruise
but they have some kind of argument with Zenair and it is tough to get

hard
facts.

-- Charlie Springer





-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----


  #9  
Old May 14th 04, 03:42 AM
David
external usenet poster
 
Posts: n/a
Default

Try this link:
http://sky-rider.net/

I'm waiting for the testing of the new wing setup - And by the way - build
time is accurate - 250 hours +-, I know of one that was built by two guys in
a month - there is also a YAHOO newsgroup on the Savannah.

Dave

"John Ammeter" wrote in message
...
Tell me more...

Where can I find data on the "Savannah"?

John

On Thu, 13 May 2004 22:19:17 -0400, "David"
wrote:

Check out the Savannah, Very similar and better cruise - They are

bringing
out a new wing too... 40ish stall and 130 cruise..
"Regnirps" wrote in message
...
I keep looking at teh web site and owner's sites. I wish the cruise was

a
little higher and when you check out the full deflection maneuvering

speed
you
have to wonder how stron it is.

There is also the pegasthol wing with pressure actuated slats. Higher

cruise
but they have some kind of argument with Zenair and it is tough to get

hard
facts.

-- Charlie Springer





-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----






-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----
  #10  
Old May 14th 04, 04:38 AM
John Ammeter
external usenet poster
 
Posts: n/a
Default

I looked at the sky-rider sight and the airplane looks VERY
interesting to me.

However, when I tried to find the YAHOO newsgroup on the
Savannah.... I found Savannah groups for gays looking for a
BJ, Satanists, Savannahs for GWB, etc.... didn't go any
further...

Can you give me a hint as to where to find that newsgroup??

John



On Thu, 13 May 2004 22:42:15 -0400, "David"
wrote:

Try this link:
http://sky-rider.net/

I'm waiting for the testing of the new wing setup - And by the way - build
time is accurate - 250 hours +-, I know of one that was built by two guys in
a month - there is also a YAHOO newsgroup on the Savannah.

Dave

"John Ammeter" wrote in message
.. .
Tell me more...

Where can I find data on the "Savannah"?

John

On Thu, 13 May 2004 22:19:17 -0400, "David"
wrote:

Check out the Savannah, Very similar and better cruise - They are

bringing
out a new wing too... 40ish stall and 130 cruise..
"Regnirps" wrote in message
...
I keep looking at teh web site and owner's sites. I wish the cruise was

a
little higher and when you check out the full deflection maneuvering

speed
you
have to wonder how stron it is.

There is also the pegasthol wing with pressure actuated slats. Higher
cruise
but they have some kind of argument with Zenair and it is tough to get
hard
facts.

-- Charlie Springer




-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----






-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----


 




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