X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 28 Jun 2011 13:11:48 -0400 Message-ID: X-Original-Return-Path: Received: from s5.cableone.net ([24.116.0.231] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5035478 for lml@lancaironline.net; Tue, 28 Jun 2011 10:48:38 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.116.0.231; envelope-from=bbreen@cableone.net Received: from [192.168.1.104] (unverified [96.19.144.204]) by s5.cableone.net (CableOne SMTP Service s5) with ESMTP id 43560818-1872270 for ; Tue, 28 Jun 2011 07:48:01 -0700 X-Original-Return-Path: Subject: Re: [LML] Re: Ventral Strakes, do they reduce performance? References: From: Berni Content-Type: multipart/alternative; boundary=Apple-Mail-4-252803499 X-Mailer: iPad Mail (8H7) In-Reply-To: X-Original-Message-Id: <59DAB3CB-70F9-463A-B0BC-5718430241F4@cableone.net> X-Original-Date: Tue, 28 Jun 2011 09:48:04 -0500 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (iPad Mail 8H7) X-Vpipe: Scanner said ok (av_avast) X-IP-stats: Incoming Last 1, First 45, in=16, out=0, spam=0 ip=96.19.144.204 X-Originating-IP: 96.19.144.204 X-Abuse-Info: Send abuse complaints to abuse@cableone.net --Apple-Mail-4-252803499 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 When I first responded to your (Ronald Stevens) message I assumed your airpl= ane was a turbine. Upon reading Bob's response I now realize you are not as= king a question about a ventral strake on a turbine...my bad. I agree with t= he response Bob has provided. No turbine...no need for a strake of any kind= . Sent from my iPad Berni Breen Bbreen@cableone.net On Jun 28, 2011, at 9:31 AM, Robert R Pastusek wrote: > Ron,=20 > In answer to your questions below, don=E2=80=99t waste your money on ventr= al strakes, etc, unless you have a turbine. The gear typically doesn=E2=80=99= t come up symmetrically in the Lancair IV, causing some yawing due to the as= ymmetrical drag during retraction. This doesn=E2=80=99t seem to be a problem= on extension, but I don=E2=80=99t believe the strakes, or yaw dampening, wi= ll make any significant difference if this is your issue. You and your passe= ngers will very quickly get used to it and consider it =E2=80=9Cpart of the r= ide.=E2=80=9D >=20 >=20 > Bob >=20 > N437RP at 680 hours and flying! >=20 > =20 >=20 > Hello guys >=20 > =20 >=20 > Me again, I just had my first lesson with the Lancair 4p (with JC) and whe= n I took off the plane was wiggling its tail like a happy dog LOL Nothing sc= ary, but this I can imagine could be annoying for passengers. >=20 > =20 >=20 > Now I was looking on the internet and found that Ventral Strakes were use= d to fight against those 'yaw' effects. >=20 > It suppose to help with turbulence, go-arrounds, full power take offs as w= ell. >=20 > =20 >=20 > My very near future plane (we are almost closing ;) is a newer one, so the= tail section was already updated to the latest.=20 >=20 > =20 >=20 > But looking at my passengers (I fly with my Son and Girlfriend a lot) this= could be disturbing for them and I was already thinking of installing the Y= aw damper (I have the tru-trak sorcerer) and perhaps also installing those V= entral strakes. >=20 > =20 >=20 > Does anybody have experience (before and after) with those? And would you r= ecommend those?=20 >=20 > =20 >=20 > Thanks =E2=80=94 Ronald Stevens (Cirrus 1100 hours, Velocity 250 hours, La= ncair 4p student now with 1 hour LOL) >=20 > =20 >=20 > =20 --Apple-Mail-4-252803499 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
When I first responded to your (Ronald S= tevens) message I assumed your airplane was a turbine.  Upon reading Bo= b's response I now realize you are not asking a question about a ventral str= ake on a turbine...my bad.  I agree with the response Bob has provided.=  No turbine...no need for a strake of any kind.

Sent from my iP= ad
Berni Breen

On Jun 28, 2011, at 9:31 AM, Robert R Pa= stusek <rpastusek@htii.com> w= rote:

Ron,
In answer to your q= uestions below, don=E2=80=99t waste your money on ventral strakes, etc, unle= ss you have a turbine. The gear typically doesn=E2=80=99t come up symmetrica= lly in the Lancair IV, causing some yawing due to the asymmetrical drag duri= ng retraction. This doesn=E2=80=99t seem to be a problem on extension, but I= don=E2=80=99t believe the strakes, or yaw dampening, will make any signific= ant difference if this is your issue. You and your passengers will very quic= kly get used to it and consider it =E2=80=9Cpart of the ride.=E2=80=9D<= /o:p>


Bob

N437RP at 680 hours and flying!

=

 

Hell= o guys

 

Me again, I just had my firs= t lesson with the Lancair 4p (with JC) and when I took off the plane was wig= gling its tail like a happy dog LOL Nothing scary, but this I can imagine co= uld be annoying for passengers.

 

Now= I was looking on the internet and found that Ventral Strakes  were used to fight against those 'yaw' effects.

It suppose to help with turbulenc= e, go-arrounds, full power take offs as well.

 

My very near future plane (we are almost closing ;) is a newer one= , so the tail section was already updated to the latest. 

 

=

But looking at my passengers (I fly with my Son a= nd Girlfriend a lot) this could be disturbing for them and I was already thi= nking of installing the Yaw damper (I have the tru-trak sorcerer) and perhap= s also installing those Ventral strakes.

 

Does anybody have experience (before and after) with those? And would y= ou recommend those? 

 

Thanks =E2= =80=94 Ronald Stevens (Cirrus 1100 hours, Velocity 250 hours, Lancair 4p stu= dent now with 1 hour LOL)

&nb= sp;

 

=
= --Apple-Mail-4-252803499--