X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 10 [X] Return-Path: Sender: To: lml Date: Sun, 07 Jan 2007 11:59:43 -0500 Message-ID: X-Original-Return-Path: Received: from vms046pub.verizon.net ([206.46.252.46] verified) by logan.com (CommuniGate Pro SMTP 5.1.4) with ESMTP id 1741558 for lml@lancaironline.net; Sun, 07 Jan 2007 02:30:28 -0500 Received: from jacky0da39824a ([71.97.249.124]) by vms046.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JBH00KCDM6GNDV7@vms046.mailsrvcs.net> for lml@lancaironline.net; Sun, 07 Jan 2007 01:30:20 -0600 (CST) X-Original-Date: Sat, 06 Jan 2007 23:30:12 -0800 From: "Tom Gourley" Subject: Re: AHRS X-Original-To: "Lancair Mailing List" Reply-to: "Tom Gourley" X-Original-Message-id: <003401c7322d$ab704fd0$640610ac@jacky0da39824a> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Mailer: Microsoft Outlook Express 6.00.2900.3028 Content-type: multipart/alternative; boundary="----=_NextPart_000_0031_01C731EA.9CA62170" X-Priority: 3 X-MSMail-priority: Normal References: This is a multi-part message in MIME format. ------=_NextPart_000_0031_01C731EA.9CA62170 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Douglas Brunner wrote: "Chelton is willing to sell their Pinpoint AHRS for $4,000 to D2 = customers Crossbow is willing to sell their NAV425EX-100 for $2,800 to D2 = customers What are peoples thoughts on the comparison between these two: a.. Have the problems that Crossbow had previously been fixed?=20 b.. Is this an apples to apples comparison - i.e. do both include the = same elements or is there a need to buy additional components for one or = the other?=20 c.. Is there a sense that one or the other is a superior product?" So far I've seen four reports from Pinpoint users and all of them seem = to be satisfied. I know of one Crossbow Nav420 installation in a Legacy = with an Op Technologies EFIS and it's working fine. I've corresponded = with a Crossbow representative who said "we have already upgraded about = =BD of the NAV425s that were ever sold to D2A, and we have no reports of = any problems by customers who use an external, aviation grade GPS = antenna." The Nav42x series is a GPS augmented AHRS (unlike the more = expensive Crossbow 500 which is purely inertial). I can't tell from = Pinpoint's single page web site if their unit is GPS augmented or = entirely inertial. There are some differences in configuration. The Nav42x series has an = integrated WAAS compatible GPS. It's not clear to me if the GPS in the = Pinpoint is standard or an option but I do know several customers opted = for the external Freeflight GPS (WAAS compatible) instead of using = Pinpoint's internal GPS. Pinpoint uses a remote mounted magnetometer, = the Nav42x has in internal magnetometer. Probably the most significant = configuration difference is Pinpoint has an integrated ADC, the Nav42x = does not so you'd have to add the ADC function to a Crossbow = installation. =20 Tom Gourley ------=_NextPart_000_0031_01C731EA.9CA62170 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Douglas Brunner wrote:

"Chelton is willing to sell their = Pinpoint AHRS for=20 $4,000 to D2 customers

Crossbow is willing to sell their=20 NAV425EX-100 for $2,800 to D2 customers

What are peoples thoughts on the = comparison=20 between these two:

Have the problems that Crossbow had = previously=20 been fixed?=20
Is this an apples to apples comparison = - i.e. do=20 both include the same elements or is there a need to buy additional = components=20 for one or the other?=20
Is there a sense that one or the other = is a=20 superior product?"

So far I've seen four reports = from Pinpoint=20 users and all of them seem to be satisfied. I know of one Crossbow = Nav420=20 installation in a Legacy with an Op Technologies EFIS and it's working=20 fine. I've corresponded with a Crossbow representative who said = "we have=20 already upgraded about =BD of the NAV425s that were ever sold to D2A, = and we have=20 no reports of any problems by customers who use an external, aviation = grade GPS=20 antenna." The Nav42x series is a GPS augmented AHRS (unlike the = more=20 expensive Crossbow 500 which is purely inertial). I can't tell = from=20 Pinpoint's single page web site if their unit is GPS augmented or = entirely=20 inertial.

There are some differences in = configuration. =20 The Nav42x series has an integrated WAAS compatible GPS. It's not = clear to=20 me if the GPS in the Pinpoint is standard or an option but I do know = several=20 customers opted for the external Freeflight GPS (WAAS compatible) = instead of=20 using Pinpoint's internal GPS. Pinpoint uses a remote mounted=20 magnetometer, the Nav42x has in internal magnetometer. Probably=20 the most significant configuration difference is Pinpoint has = an=20 integrated ADC, the Nav42x does not so you'd have to add the ADC=20 function to a Crossbow installation.

Tom Gourley

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