X-Virus-Scanned: clean according to Sophos on Logan.com From: "Neil Unger" Received: from nschwmtas02p.mx.bigpond.com ([61.9.189.140] verified) by logan.com (CommuniGate Pro SMTP 6.1.5) with ESMTPS id 8023854 for flyrotary@lancaironline.net; Mon, 28 Sep 2015 18:54:22 -0400 Received-SPF: pass receiver=logan.com; client-ip=61.9.189.140; envelope-from=neil.unger@bigpond.com Received: from nschwcmgw07p ([61.9.190.167]) by nschwmtas02p.mx.bigpond.com with ESMTP id <20150928225345.CMLD26469.nschwmtas02p.mx.bigpond.com@nschwcmgw07p> for ; Mon, 28 Sep 2015 22:53:45 +0000 Received: from UserPC ([121.218.39.123]) by nschwcmgw07p with BigPond Outbound id Nmtg1r00K2fRn3M01mtgoD; Mon, 28 Sep 2015 22:53:45 +0000 X-Authority-Analysis: v=2.0 cv=CsQ9gwED c=1 sm=1 a=7DxmD7lZIPuu7zppW1Pvpg==:17 a=1IlZJK9HAAAA:8 a=Ia-xEzejAAAA:8 a=zJxhrPpMHAXCE27rxKUA:9 a=QEXdDO2ut3YA:10 a=p0zSbnvKovUIYobV:21 a=pWL1S54J0xGjQfME:21 a=SSmOFEACAAAA:8 a=yMhMjlubAAAA:8 a=GbiOIn-v1yR5_mVvzWYA:9 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 a=7DxmD7lZIPuu7zppW1Pvpg==:117 Message-ID: To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: New psru Date: Tue, 29 Sep 2015 08:53:37 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01D0FA94.549159A0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 This is a multi-part message in MIME format. ------=_NextPart_000_001D_01D0FA94.549159A0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Bobby, running the microtech coils, nothing spectacular, but only = intend to run at 8000 rpm max. Still to test, so be wary yet. Neil. From: Bobby J. Hughes=20 Sent: Tuesday, September 29, 2015 6:38 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: New psru Looks great Neil. What type coils are you running and do they have = enough time to fully charge at 8500 rpm? =20 Bobby Hughes RV10 Renesis=20 =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]=20 Sent: Wednesday, September 16, 2015 11:28 PM To: Rotary motors in aircraft Subject: [FlyRotary] New psru =20 Gents, Finally the first PSRU with a reduction of 3.12 to 1. = Pictured is the basic box which is heavily based on Tracy=E2=80=99s PSRU = but with the larger reduction and 2 oil lubricated thrust bearings on = the prop shaft instead of a single sealed roller bearing in = Tracy=E2=80=99s. This psru will mount directly in place of Tracy's 2.85 = reduction PSRU with no modification. Now to put to test to see if the practice matches the theory. = Already found one fault. The =E2=80=9CO=E2=80=9D ring seal that seals = the main body of the PSRU to the base that attaches to the mounting = plate is outside all the attachment bolts, which means that the oil can = wick down the bolts and make a lovely mess of your pride and joy. Now = looking for more faults as this is easily fixed. Unlike Tracy's , this = PSRU is totally sealed with O rings to ease dismantling with no clean up = of whatever gasket sealer you have had to use. Now the terrible part and still undecided as I am yet to cost a = damper on the drive. Sadly it also is not cheap and may yet cost near = $500 for a =E2=80=9Dbit of rubber=E2=80=9D. Then comes a mounting plate = as made by Geoff Doddridge which he sells for around $400 USD. There is = no point in me trying to compete with Geoff as he does a magnificent job = at a cheap price. Freight is always a horrible price so he makes the = plate and there is no freight from Aust to be added. The total cost in Aust dollars (including Geoff=E2=80=99s plate) = will be around the $5000 which equates to $3500 USD. Then freight of = possibly $200. Currently looking at further reduction in price if you = source the gear set locally saving on freight both ways to Aust and = back. I will have to alter the way it is constructed so that all the = mods can be done by you the builder. Still looking! So far the progress. Neil. ------=_NextPart_000_001D_01D0FA94.549159A0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Bobby,  running the microtech coils,  nothing = spectacular, but=20 only intend to run at 8000 rpm max.  Still to test, so be wary = yet. =20 Neil.
 
Sent: Tuesday, September 29, 2015 6:38 AM
Subject: [FlyRotary] Re: New psru
 

Looks=20 great Neil. What type coils are you running and do they have enough time = to=20 fully charge at 8500 rpm?

 

Bobby=20 Hughes

RV10=20 Renesis

 

From: Rotary = motors in=20 aircraft [mailto:flyrotary@lancaironline.net]
Sent: = Wednesday,=20 September 16, 2015 11:28 PM
To: Rotary motors in=20 aircraft
Subject: [FlyRotary] New=20 psru

 

Gents,

           =   =20 Finally the first PSRU with a reduction of 3.12  to 1.  = Pictured is=20 the basic box which is heavily based on Tracy=E2=80=99s PSRU but with = the larger=20 reduction and 2 oil lubricated thrust   bearings on the prop = shaft=20 instead of a single sealed roller bearing in Tracy=E2=80=99s.  This = psru will mount=20 directly in place of Tracy's 2.85 reduction PSRU with no=20 modification.

    Now=20 to put to test to see if the practice matches the theory.  Already = found=20 one fault. The =E2=80=9CO=E2=80=9D ring seal that seals the main body of = the PSRU to the base=20 that attaches to the mounting plate is outside all the attachment bolts, = which=20 means that the oil can wick down the bolts and make a lovely mess of = your pride=20 and joy.  Now looking for more faults as this is easily = fixed.  Unlike=20 Tracy's , this PSRU is totally sealed with O rings to ease dismantling = with no=20 clean up of whatever gasket sealer you have had to=20 use.

    Now=20 the terrible part and still undecided as I am yet to cost a damper on = the=20 drive.  Sadly it also is not cheap and may yet cost near $500 for a = =E2=80=9Dbit of=20 rubber=E2=80=9D.  Then comes a mounting plate as made by Geoff = Doddridge which he=20 sells for around $400 USD.  There is no point in me trying to = compete with=20 Geoff as he does a magnificent job at a cheap price.  Freight is = always a=20 horrible price so he makes the plate and there is  no freight from = Aust to=20 be added.

    The=20 total cost in Aust dollars (including Geoff=E2=80=99s plate) will be = around the $5000=20 which equates to $3500 USD.  Then freight of possibly $200.  = Currently=20 looking at further reduction in price if you source the gear set locally = saving=20 on freight both ways to Aust and back.  I will have to alter the = way it is=20 constructed so that all the mods can be done by you the builder.  = Still=20 looking!

    So=20 far the progress. =20 Neil.

------=_NextPart_000_001D_01D0FA94.549159A0--