X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 02 Oct 2009 22:34:27 -0400 Message-ID: X-Original-Return-Path: Received: from [69.146.254.20] (HELO crmtest.arilabs.net) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3868949 for lml@lancaironline.net; Tue, 29 Sep 2009 08:11:02 -0400 Received-SPF: none receiver=logan.com; client-ip=69.146.254.20; envelope-from=kevin@arilabs.net Subject: RE: [LML] Re: Beringer wheels and brakes on a 235? MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CA40FD.E58FA882" X-Original-Date: Tue, 29 Sep 2009 06:10:00 -0600 Content-class: urn:content-classes:message X-Original-Message-ID: <3E1C96B95693C640B0AC2F59D2500F3B01A034@crmtest.arilabs.net> X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] Re: Beringer wheels and brakes on a 235? Thread-Index: AcpAoxwg4zw8UGNTR0GSAnQ6v8eYiAAVJ9bg From: "Kevin Stallard" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01CA40FD.E58FA882 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable They are very, VERY nice. =20 =20 Forgive me for looking at this from engineering point of view... =20 When I looked at them, I compared them to Grove's wheels in brakes in terms of stopping capability (claimed). Data sheets are dubious to me when a company is trying to sell something, but this is what I read: Grove shows around 4700 in-lbs, while Berigner is 4200 in-lbs. Grove says they are capable of dissipating 246,000 ft-lbs of kinetic energy while Beringer shows 198,000 ft-lbs (5 inch wheels and brakes Grove PN: 57-224, Berigner's part number: JA-31, Legacy installation). 198k ft-lbs is still respectable, but I wanted the extra margin. =20 Who knows what the real numbers are, but Grove appeared to be better in terms of stopping power. Is this true? I don't really know, because I don't have a dyno to hook them up to. =20 =20 I could be reading this wrong, but it also appears Grove is lighter as well. The data sheet isn't clear whether or not the 7.2 lbs is for both wheels or just one. I think it means 7.2 lbs for both compared to Beringer's 4.25lbs for one? It's not too clear if that is the case. =20 Anyway, bottom line, you have a mission for your plane, what ever you choose, know your limits. My personal (and uneducated) opinion is that either Grove or Beringer's brakes would probably be just fine. Ether brakes you pick, you need to know their limits in respect to your airplane's configuration (i.e. weight and touch down speed). =20 =20 Be careful out there... =20 Kevin =20 ________________________________ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Craig Gainza Sent: September 28, 2009 19:18 To: lml@lancaironline.net Subject: [LML] Re: Beringer wheels and brakes on a 235? =20 Steve, Pete had one of the wheels at Reno. Beautiful design and 15 lbs less weight. It is designed for a tubeless Michelin tire. Not available for the IV's yet but Beringer said they hope to have them available by 2010. Craig ________________________________ To: lml@lancaironline.net Date: Sun, 27 Sep 2009 20:40:55 -0400 From: mcmess1919@yahoo.com Subject: [LML] Beringer wheels and brakes on a 235? Here are some photos of Pete Z's Legacy installation. If they work as good as they look............. =20 Steve Colwell __________ NOD32 4452 (20090924) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com ------_=_NextPart_001_01CA40FD.E58FA882 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

They are very, VERY nice.

Forgive me for looking at this from engineering point of = view…

When I looked at them, I compared them to Grove’s wheels = in brakes in terms of stopping capability (claimed). Data sheets are = dubious to me when a company is trying to sell something, but this is what I = read: Grove shows around 4700 in-lbs, while Berigner is 4200 in-lbs. = Grove says they are capable of dissipating 246,000 ft-lbs of kinetic energy while = Beringer shows 198,000 ft-lbs (5 inch wheels and brakes Grove PN: 57-224, = Berigner’s part number: JA-31, Legacy installation). 198k ft-lbs is still = respectable, but I wanted the extra margin.

Who knows what the real numbers are, but Grove appeared to be = better in terms of stopping power. Is this true? I don’t really = know, because I don’t have a dyno to hook them up to. =

I could be reading this wrong, but it also appears Grove is = lighter as well. The data sheet isn’t clear whether or not the 7.2 lbs = is for both wheels or just one. I think it means 7.2 lbs for both = compared to Beringer’s 4.25lbs for one? It’s not too clear if that = is the case.

Anyway, bottom line, you have a mission for your plane, what = ever you choose, know your limits. My personal (and uneducated) opinion is = that either Grove or Beringer’s brakes would probably be just fine. = Ether brakes you pick, you need to know their limits in respect to your = airplane’s configuration (i.e. weight and touch down speed). =

Be careful out there…

Kevin

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Craig Gainza
Sent: September 28, 2009 = 19:18
To: = lml@lancaironline.net
Subject: [LML] Re: = Beringer wheels and brakes on a 235?

Steve,

Pete had one of the wheels at Reno. Beautiful design and 15 lbs less weight. It is designed for a = tubeless Michelin tire.

Not available for the IV's yet but Beringer said they hope to have them available by 2010.

Craig

To: = lml@lancaironline.net
Date: Sun, 27 Sep 2009 20:40:55 -0400
From: mcmess1919@yahoo.com
Subject: [LML] Beringer wheels and brakes on a = 235?

Here are some photos of Pete Z’s Legacy installation. If they = work as good as they look………….<= /p>

<= /p>

Steve Colwell

__________ NOD32 4452 (20090924) Information __________

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