X-Virus-Scanned: clean according to Sophos on Logan.com From: "Mark Steitle" Received: from mail-wi0-f172.google.com ([209.85.212.172] verified) by logan.com (CommuniGate Pro SMTP 6.1.4) with ESMTPS id 7872143 for flyrotary@lancaironline.net; Tue, 28 Jul 2015 15:22:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.212.172; envelope-from=msdstx@gmail.com Received: by wicmv11 with SMTP id mv11so192026888wic.0 for ; Tue, 28 Jul 2015 12:21:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=hL5KNVvXhcb4AFdBcQOAVmiQEq+Wk3y1wBEuxCfYEEg=; b=Ofva5iTLqj0Z8k5MZ/9qymNXyins/QZWlXVa4K0IPBUVH0jo6W/Lib36XDUCsTv9WT jYuVeEzBpvGgXny91+OEPV+vrZtUV52QmdosZhHm4oCKiwjFo/QjIhuCNEuiCIM9yGhY 41eMgGbOXMAxWXfu546cdusUZeQMZchwhxeIMOCQ1YCASkw9CVW6Tzf0Vwlay7b8Vw41 mIck9pQzGXN3Te0S6lBlirZJezfhvsx/u4ja9S1zsfmOvr76bXxc0pg4kOx8qAHRbtnm b0XZL4XRos0iVlNrHeDACNVaJc+IBMqS63nHP72huXKl2XryaiNBbjY0EOfIgwt0D2dq K92g== MIME-Version: 1.0 X-Received: by 10.180.85.134 with SMTP id h6mr35694703wiz.66.1438111297938; Tue, 28 Jul 2015 12:21:37 -0700 (PDT) Received: by 10.194.125.202 with HTTP; Tue, 28 Jul 2015 12:21:37 -0700 (PDT) In-Reply-To: References: Date: Tue, 28 Jul 2015 14:21:37 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Alternative redrives To: Rotary motors in aircraft Content-Type: multipart/related; boundary=f46d0444e9d310974d051bf461a4 --f46d0444e9d310974d051bf461a4 Content-Type: multipart/alternative; boundary=f46d0444e9d310974b051bf461a3 --f46d0444e9d310974b051bf461a3 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Bill, The RD-2C uses the Ford 6-pinon planetary, so you would have all six planets in contact with the sun gear at all times. The planets are about 1" wide, so you have 6" tooth contact area. Another benefit of the planetary design is that the clearances remain constant. Another benefit is the output shaft is concentric with the eccentric, which helps in packaging. Mark On Tue, Jul 28, 2015 at 10:56 AM, Bill Bradburry < flyrotary@lancaironline.net> wrote: > I stand corrected. This drive would only have a couple of teeth > in contact at any one time. How many are in contact with the RD1-C? > > What was the problem with the Ross if you know? > > Bill > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > *Sent:* Tuesday, July 28, 2015 10:37 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Alternative redrives > > > > No, Tracy started off with a Ross Drive =E2=80=A6 > > The Marcotte drive is a different configuration than Tracy=E2=80=99s =E2= =80=9CFord-6=E2=80=9D > planetary gear set: read for yourself =E2=80=A6 http://www.sdsefi.com/a= ir14.html > > Jeff > > From: > > Bill Bradburry > > Subject: > > RE: [FlyRotary] Re: Alternative redrives > > Date: > > Tue, 28 Jul 2015 10:22:59 -0500 > > To: > > 'Rotary motors in aircraft' > > [image: Message Header] > > > [image: Undecoded Message] > > > Jeff, > > If I am not mistaken, Tracy started off using a Marcotte drive on his > RV-4. That drive I think is what inspired him to develop his own drive. > It would take a pretty bad experience to inspire me to that extent! :>) > > Bill > > > > > > *From:* Jeff Whaley > *Sent:* Tuesday, July 28, 2015 10:17 AM > *To:* 'Mark Steitle' > *Subject:* RE: [FlyRotary] Re: Alternative redrives > > > > I see the aircraft was equipped with an Aluminum Propellor =E2=80=93 whic= h may > have lead to the prop shaft fracturing? > > > > I can=E2=80=99t vouch for the =E2=80=9CMarcotte Drive=E2=80=9D but Ross P= arnham (referenced on > this list for P51 style radiator install) uses the Marcotte Drive on his > Subaru-powered RV6, mated to a composite prop. The website shows a pictu= re > of re-drive and bell housing mated to a 13B =E2=80=A6 > http://glasairproject.com/Marcotte/index.html > > Jeff > > > > *From:* Mark Steitle [mailto:flyrotary@lancaironline.net > ] > *Sent:* Monday, July 27, 2015 7:05 PM > *Subject:* Re: [FlyRotary] Re: Alternative redrives > > > > Search YouTube under "LS1 Glasair 111 at Paducah, Ky" for a video of this > a/c idling. You can hear him saying the PSRU builder is "belly up". > > Sent from my iPad > > > On Jul 27, 2015, at 2:38 PM, Tom Mann wrote= : > > That was during the Canard Fly-in at Rough River 2011 > > > > > http://www.ntsb.gov/_layouts/ntsb.aviation/GeneratePDF.aspx?id=3DERA11FA5= 12&rpt=3Dfi > > > > *From:* Mark Steitle > > *Sent:* Monday, July 27, 2015 2:02 PM > > *To:* Rotary motors in aircraft > > *Subject:* [FlyRotary] Re: Alternative redrives > > > > That looks a lot like the gearbox that failed, killing the pilot when the > engine disengaged from the prop and he dead-sticked it into a hotel > building. It was about a week after the alternative engine fly-in at Ed'= s > place in Paduka, KY. As I recall, it was a Glasair III with a > turbo-charged LS1. I have video of a ground run around here somewhere. > Real sad story. Can anyone confirm whether or not it was the same make > psru? I never read the final accident report. > > > > Mark > > > > On Mon, Jul 27, 2015 at 11:31 AM, Bill Schertz < > flyrotary@lancaironline.net> wrote: > > I went back to the exhibit buildings, and took some photos of the psru=E2= =80=99s > offered by www.autopsrus.com . I will forward these later today as every > thing gets transferred . They are spur gear drive, have there own oil > supply and pump, use pressure fed roller bearings, will provide oil for a > constant speed prop, and are available in many reduction ratios. They mak= e > a unit that can be straight through, suitable for the 13-B, the casing is > CNC machined. They use a flywheel for the torque damping, and it has a > centrifugal clutch that disengages the prop below ~900 engine rpm, so whe= n > starting there is no prop load. Will likely be heavier than Tracy=E2=80= =99s > > > > I have to reduce the size of the pictures before I can send them. > > > > *From:* Tom Gillespie > > *Sent:* Sunday, July 26, 2015 1:59 PM > > *To:* Rotary motors in aircraft > > *Subject:* [FlyRotary] Re: Anyone or everyone in Oshkosh? > > > > Tracy, > > That is very interesting! Could one be built specifically for my > combination of a high HP 20 B? I would have more peace of mind knowing ho= w > it was put together by me along with your knowledge and experience. The > thought of someone just starting out making them does not sit well with m= e > as they are an unknown. > > Let me know what you think and I will be in touch. > > Thanks for your time! > > ~~~tg~~~ > > > > > ------------------------------ > > *From:* Tracy > *To:* Rotary motors in aircraft > *Sent:* Sunday, July 26, 2015 10:04 AM > *Subject:* [FlyRotary] Re: Anyone or everyone in Oshkosh? > > > > The design is royalty free. Anyone who wants to build it is more than > welcome. I can help with info if you need it. > > > > Tracy > > Sent from my iPad > > > > This message, and the documents attached hereto, is intended only for the > addressee and may contain privileged or confidential information. Any > unauthorized disclosure is strictly prohibited. If you have received this > message in error, please notify us immediately so that we may correct our > internal records. Please then delete the original message. Thank you. > --f46d0444e9d310974b051bf461a3 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Bill,
=C2=A0
The RD-2C uses the F= ord 6-pinon planetary, so you would have all six planets in contact with th= e sun gear at all times.=C2=A0 The planets=C2=A0are about 1" wide, so = you=C2=A0have=C2=A06" tooth contact area.=C2=A0
=C2=A0
=
Another benefit of=C2=A0the planetary design=C2=A0is that the clearanc= es remain constant.
=C2=A0
Another benefit is the outp= ut shaft is concentric with the eccentric, which helps in packaging.
<= div>=C2=A0
Mark

On Tue, Jul 28, 2015 at 10:56 AM, Bill Bradburry <flyrotary@lancaironline.net> wrote:

I stand corrected.= =C2=A0 This drive would only have a couple of teeth in contact at any one time.=C2=A0 How many are in co= ntact with the RD1-C?

What was the problem= with the Ross if you know?

Bill <= /span>

From:<= font face=3D"Tahoma" size=3D"2"> Rotary motors in aircraft [mailto:fl= yrotary@lancaironline.net]
Sent: Tuesday, July 28, 2015= 10:37 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Alternative redrives

=C2=A0

= No,= Tracy started off with a Ross Dr= ive =E2=80=A6

= The= Marcotte drive is a different configuration than Tracy=E2=80= =99s =E2=80=9CFord-6=E2=80=9D planetary gear set: =C2=A0read for yourself =E2=80= =A6=C2=A0 ht= tp://www.sdsefi.com/air14.html

= Jef= f

From:

Bill Bradburry <= flyrotary@lancaironline.net>

Subject:

RE: [FlyRotary] Re: Alternative redrives<= u>

Date:

Tue, 28 Jul 2015 10:22:59 -0500

To:

'Rotary motors in aircraft' <flyrotary@lancaironline.net>

3D"Message

3D"Undecoded

Jeff,

If I am not mistak= en, Tracy started off using a Marcotte drive on his RV-4.=C2=A0 That drive I think = is what inspired him to develop his own drive.=C2=A0 It would take a pretty = bad experience to inspire me to that extent!=C2=A0 :>)

Bill

= = =C2=A0

= = =C2=A0

From:<= font face=3D"Tahoma" size=3D"2"> Jeff Whaley
Sent: Tuesday, July 28, 2015= 10:17 AM
To: 'Mark Steitle' Subject: RE: [FlyRotary] Re: Alternative redrives

=C2=A0

= I s= ee the aircraft was equipped with an Aluminum Propellor =E2=80=93 which may have lead to th= e prop shaft fracturing?

= = =C2=A0

= I c= an=E2=80=99t vouch for the =E2=80=9CMarcotte Drive=E2=80=9D but Ross Parnham (referenced on this list for P51 style radiator install) u= ses the Marcotte Drive on his Subaru-powered RV6, mated to a composite prop.=C2=A0 The website sho= ws a picture of re-drive and bell housing mated to a 13B =E2=80=A6=C2=A0 http:/= /glasairproject.com/Marcotte/index.html

= Jef= f

= = =C2=A0

From:<= font face=3D"Tahoma" size=3D"2"> Mark Steitle [mailto:flyrotary@lancaironline.net]
Sent: Monday, July 27, 2015 = 7:05 PM
Subject: Re: [FlyRotary] Re: Alternative redrives

=C2=A0

Search YouTube under "LS1 Glasair 111 at <= u>Paducah, Ky" for a video of this a/c idling.=C2=A0 You can hear him saying the PSRU buil= der is "belly up". =C2=A0

Sent from my iPad


On Jul 27, 2015, at 2:38 PM, Tom Mann <flyrotary@lancaironline.net> wrote:

That was durin= g the Canard Fly-in at Rough River 2011

=C2=A0<= u>

=C2=A0=

From: Mark Steitle

Sent: Monday, July 27, 2015 2:02 PM

Subject: [FlyRotary] Re: Alternative redrives

=C2=A0<= u>

That looks a l= ot like the gearbox that failed, killing the pilot when the engine disengaged from = the prop and he dead-sticked it into a hotel building.=C2=A0 It was about a wee= k after the alternative engine fly-in at Ed's place in Padu= ka, KY.=C2=A0 As I recall, it was a Glasair III with a turbo-charged LS1.=C2=A0 I have vi= deo of a ground run around here somewhere.=C2=A0 Real sad story.=C2=A0 Can anyo= ne confirm whether or not it was the same make psru?=C2=A0 I never read the fi= nal accident report.

=C2=A0<= u>

Mark

=C2=A0<= u>

On Mon, Jul 27= , 2015 at 11:31 AM, Bill Schertz <flyrotary@lancaironline.net> wrote:

I went back to= the exhibit buildings, and took some photos of the psru=E2=80=99s offered by www.autopsrus.com = . I will forward these later today as every thing gets transferred . They are spur g= ear drive, have there own oil supply and pump, use pressure fed roller bearings= , will provide oil for a constant speed prop, and are available in many reduction ratios. They make a unit that can be straight through, suitable for the 13-= B, the casing is CNC machined. They use a flywheel for the torque damping, and= it has a centrifugal clutch that disengages the prop below ~900 engine rpm, so when starting there is no prop load. Will likely be heavier than = Tracy=E2=80=99s

=C2=A0<= u>

I have to redu= ce the size of the pictures before I can send them.

Tracy,

=C2=A0=C2=A0=C2=A0 That is very interesting! Could one be built specifically for my combinatio= n of a high HP 20 B? I would have more peace of mind knowing how it was put toge= ther by me along with your knowledge and experience. The thought of someone just starting out making them does not sit well with me as they are an unknown.<= u>

=C2=A0=C2=A0 Let me know what you think and I will be in touch.

Thanks for your time!

~~~tg~~~

=C2=A0

=C2=A0

=C2=A0

The design is royalty free.=C2=A0 Anyone who wants to build it is more than welcome.=C2=A0=C2=A0 I can help with info if you need it.

=C2=A0

Tracy

Sent from my iPad

=C2=A0

This message, and the documents attached hereto, is in= tended only for the addressee and may contain privileged or confidential information. Any unauthorized disclosure is strictly prohibited. If you have received this message in error, please notify us immediately so that we may correct our internal records. Please then delete the original message. Thank you.


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