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701 Cruise performance (was FWF kit for Jabiru)

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dougsnash(at)yahoo.com
Guest

Posted: Thu Oct 05, 2006 4:34 am Post subject: 701 Cruise performance (was FWF kit for Jabiru)

I cannot coment on the cruise performance of the 701

with expirience only with what I've been told.  That

being said...



The VNE of the CH-701 is 115 MPH.  With some basic

cleanup (ie strut fairings)and a 100 HP Rotax, the 701

will do the advertised 105MPH.  The problem is, the

plane will reach 115 VNE if you aren't paying close

attention to the airspeed and let the nose down a

little.  I don't know what power setting the 912s is

running at to deliver those numbers though.  



This information came from a very good friend of mine

that did the initial flight tests in a scratch built

100hp 701 for another builder.  He has no reason to

inflate the numbers.



Take my statements for what they are worth(not much).



Doug MacDonald

CH-701 scratch builder

NW Ontario, Canada

Working on seat back and baggage floor



do not archive

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jetboy

Joined: 22 Jul 2006
Posts: 233

Posted: Thu Oct 05, 2006 9:14 pm Post subject: Re: 701 Cruise performance (was FWF kit for Jabiru)

VNE is 110 mph.

A point to note about the 701 indicated airspeed is going to be about 15% higher than it should read. This is because the plans do not specify an external static vent. Its a cheap and easy way to get good performance figures, and done by many kitplanes. If someone comments that my 701 is slow, I can just reach down and pull the static hose off and dial in another 10 knots.  I tried this in a Cessna 150 and its the same.

    The new cowl and engine mounting is probably worthwhile - particularly for the 912S which tends to shake the tail.

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_________________
Ralph - CH701 / 2200a

nyterminat(at)aol.com
Guest

Posted: Fri Oct 06, 2006 5:06 pm Post subject: 701 Cruise performance (was FWF kit for Jabiru)

Ralph,

    

   You may very well be correct, I have an exterior static port and maybe that is why mine is reading lower.

    

   Bob Spudis 

    

  

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billmileski

Joined: 07 Aug 2006
Posts: 68
Location: Ledyard, CT

Posted: Sat Oct 07, 2006 6:51 am Post subject: Re: 701 Cruise performance (was FWF kit for Jabiru)

Yes, I was aware of the error in the simpler setup of static venting to cabin, and I have an external static port as well.  But it seems good to also try and validate an ASI with a GPS if possible.



Bill Mileski

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