X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 24 May 2010 13:09:42 -0400 Message-ID: X-Original-Return-Path: Received: from web36905.mail.mud.yahoo.com ([209.191.85.73] verified) by logan.com (CommuniGate Pro SMTP 5.3.7) with SMTP id 4324059 for lml@lancaironline.net; Mon, 24 May 2010 08:44:23 -0400 Received-SPF: none receiver=logan.com; client-ip=209.191.85.73; envelope-from=chris_zavatson@yahoo.com Received: (qmail 45387 invoked by uid 60001); 24 May 2010 12:43:46 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=XuDZFPsaRJIa9TZu6r3OPeBcAr++mwUCHDK69jmBGIlvmYrAP3PgIaue3z42pYycew5Y+yF+MOydBVwjrRK1BASUu7zlruw7RkL9xnK7qlQLSjn4Z4ufpQVI7eyQv9Gvu+2FGjFXM9VKBYHPqt3d4/cSa6b7FhMX4O+HpJo6chY=; X-Original-Message-ID: <362344.45376.qm@web36905.mail.mud.yahoo.com> X-YMail-OSG: 99Ezi4AVM1lAm4MmBZAZs3BvBZFFS2Onmt9ypTLVissE9LU jKhPaQDIPB_a0p0oGAsiwDbfOnfudxZfNe_WmWfUQ.zcXj5WWp7B5qbvYkoZ 3pp.1cO1sH5mDq79.sfKDWZ4dKh4e31frhB4u9ihBzA.hiFYPM2Y9CHUyYXV 9XmKksoCmrRrLOuDLUPvn9vMV_7XFpbZLeeJ443jfwPKULRLL7VgbD9WqT5w tTO2MGzwCRvpRi9uR8VYOKVW4_9AYuYJn.P2.LaY8FGFDqproqt2YiyIpHM0 OKw3sak3jFFUHX8pgl8VV1S3gqYnpMf1wIZzRfs4ctw5fTeD9IOrXwSwiZbK DJ.mhrTL.qS8U_hfobW_9AceSdcrlQIDGQE.poQ-- Received: from [99.133.180.243] by web36905.mail.mud.yahoo.com via HTTP; Mon, 24 May 2010 05:43:46 PDT X-Mailer: YahooMailRC/374.4 YahooMailWebService/0.8.103.269680 References: X-Original-Date: Mon, 24 May 2010 05:43:46 -0700 (PDT) From: Chris Zavatson Subject: Re: [LML] Legacy Trim Tab Servo Speed Control X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-657964395-1274705026=:45376" --0-657964395-1274705026=:45376 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Valin,=0AThe 360 MKII tail is the same as the Legacy so this may be useful.= =C2=A0 =0AI regulate trim servo speed by switching between bus voltage and = a 5V regulator for=C2=A0low vs high air speed trim.=C2=A0 I found 5V to the= best compromise between low speed and having enough torque to operate the = trim.=C2=A0 High rate is used in the pattern, low rate everywhere else. Thi= s set-up has woked great for the last 12 years.=0Ahttp://n91cz.com/VideoCli= ps/TrimTabDualRate_0001.wmv=C2=A0=C2=A0=0AI would avoid anything that simpl= y puts another resistance in line with the trim circuit for speed control a= s the voltage across the servo will vary with load.=C2=A0 A variable voltag= e regulator is another option and is in fact what I used originally.=C2=A0 = I found that dual rates were plenty for this system.=0AChris=0A=0A=0AChris = Zavatson=0AN91CZ=0A360std=0Awww.N91CZ.com=0A=0A=0A=0A=0A___________________= _____________=0AFrom: Valin & Allyson Thorn =0ATo: l= ml@lancaironline.net=0ASent: Sun, May 23, 2010 8:52:58 PM=0ASubject: [LML] = Legacy Trim Tab Servo Speed Control=0A=0A=0AHey Legacy gang,=0A=C2=A0=0ACou= ld I get recommendations on the best way to set up the Ray Allen trim tab s= ervos in the Legacy so that they have the right sensitivity throughout the = range of flight speeds?=C2=A0 I know from 99L that at cruise speeds without= a speed control rheostat to slow the tabs down that they=E2=80=99re too se= nsitive =E2=80=93 slightest tap on the switch causes a =E2=80=9Cbump=E2=80= =9D.=0A=C2=A0=0ATtcwtech.com has a $49 speed switch that they sell that can= be used to set a speed where the sensitivity changes =E2=80=93 up to 145 k= ts.=C2=A0 Is it good enough to have a speed control rheostat cut in to slow= the tabs down once the gear and flaps are up?=C2=A0 Or, has anyone found a= rheostat that=E2=80=99s directly driven by the airspeed so that the sensit= ivity is always in proportion to flight speed?=C2=A0 Other ideas?=0A=C2=A0= =0AThanks,=0A=C2=A0=0AValin Thorn=0AEternal Legacy project=0AHouston, Texas= USA=0A=0A=0A --0-657964395-1274705026=:45376 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Valin,
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The 360 MKII tail is the same as the Legacy s= o this may be useful. 
=0A
I regulate trim servo speed by sw= itching between bus voltage and a 5V regulator for low vs high air spe= ed trim.  I found 5V to the best compromise between low speed and havi= ng enough torque to operate the trim.  High rate is used in the patter= n, low rate everywhere else. This set-up has woked great for the last 12 ye= ars.
=0A=0AI would avoid anything that simply puts another resistance in line with th= e trim circuit for speed control as the voltage across the servo will vary = with load.  A variable voltage regulator is another option and is in f= act what I used originally.  I found that dual rates were plenty for t= his system.
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Chris
=0A
 
=0A
 =0A
Chris Zavatson
=0A
N91CZ
=0A
360std
=0Awww.N91CZ.com
=0A

=0A=0A
=0AFrom: Valin & Allyson Thorn <thorn@starfl= ight.aero>
To: lml@la= ncaironline.net
Sent: Su= n, May 23, 2010 8:52:58 PM
Subject:= [LML] Legacy Trim Tab Servo Speed Control

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Hey Legacy gang,

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Could I get recomm= endations on the best way to set up the Ray Allen trim tab servos in the Le= gacy so that they have the right sensitivity throughout the range of flight= speeds?  I know from 99L that at cruise speeds without a speed contro= l rheostat to slow the tabs down that they=E2=80=99re too sensitive =E2=80= =93 slightest tap on the switch causes a =E2=80=9Cbump=E2=80=9D.

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T= tcwtech.com has a $49 speed switch that they sell that can be used to s= et a speed where the sensitivity changes =E2=80=93 up to 145 kts.  Is = it good enough to have a speed control rheostat cut in to slow the tabs dow= n once the gear and flaps are up?  Or, has anyone found a rheostat tha= t=E2=80=99s directly driven by the airspeed so that the sensitivity is alwa= ys in proportion to flight speed?  Other ideas?

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 <= /SPAN>

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Thanks,

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Valin Thorn=

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Eternal Legacy project

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Houston, Texas USA

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