X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) From: "Le Roux Breytenbach breytenbachleroux@gmail.com" Received: from mail-ej1-f46.google.com ([209.85.218.46] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1054145 for flyrotary@lancaironline.net; Sun, 20 Dec 2020 00:04:54 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.218.46; envelope-from=breytenbachleroux@gmail.com Received: by mail-ej1-f46.google.com with SMTP id 6so8992452ejz.5 for ; Sat, 19 Dec 2020 21:04:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=content-transfer-encoding:from:mime-version:subject:date:message-id :references:in-reply-to:to; bh=gnhLFHurCvCjmEegIPavNBt07NKuWP8MNgIrtaSZLIw=; b=WyRlE2aqfThh64xjo9HcwaXIEUmnTzvdmfNaSj+eJ5zx0i5k3+P0jPQyfxVsGkzQnQ 45a3q5ZVTSGOAGjegx3WgHp0XHrkZP5d4wV8JmpragJEnmKc1nCNzsKSmKIa99HcEau0 WtiH2SD23bGpbXADN2Y7OZxEGOVazd7cNFakSJu8TCqq8CWXGw+0DCTGDffqL6n7cOCM 4g7+/diG7M915tHi/rfaGXbo6UVnX3PuwxWxLKgjU35TOhVm2Qt/KyMgz6zQ+fkF+Sg/ mab9k5UaLBOW9lWZkckRNtkWfohlIr1Tdt7q1Zi4sHOECgBLgRXUDTPbkBaH2F3v9wVL 99iQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:date:message-id:references:in-reply-to:to; bh=gnhLFHurCvCjmEegIPavNBt07NKuWP8MNgIrtaSZLIw=; b=NDmOoP0y18hLqv15bNPPjv0lDlhuBSxVuZAx6iiJAaE3bGkgOpycSaoQ2axHlT0o97 jExN8erktZBuDvCBR9F0gzdq67+C6PGqI4SpMbf+i748+qBDopijEVo6EBuplmmTZcLj CUAaCWNny8LqFS8V79NRaaeWLkwzsJd9/9u64QJ5T2VeDVag3moC9F9OUppS2zLrny3n ZN4DYa4ZOk0NeuBwhkJOQhGrAw2H29XHseVJm82i+u8wtQ7xpoafcPkUcGyq5wPt1i2q 8UisL2cQpcPGWNlbn9jVSq4ltZPS/Szks9HkSdgfEx2wPC8OMgoOHrGvQq+Dz/bp/+Wn 7zFg== X-Gm-Message-State: AOAM532esXokwWU9AZ6hcelPclqqbPWiL9qbusrND8YAX2r0eRXhVoT9 kYQEInQTrdGGKIxEwVLmexOm1IEAyiU= X-Google-Smtp-Source: ABdhPJzDUXxxXBzH00zmIFMew/FLvO6d/5ucC9g27CyuBxw7N7pcyC+0O2Ix9z3iHsnWW9xqP45PWw== X-Received: by 2002:a17:906:1102:: with SMTP id h2mr10445529eja.296.1608440677707; Sat, 19 Dec 2020 21:04:37 -0800 (PST) Return-Path: Received: from [192.168.1.122] ([160.226.128.22]) by smtp.gmail.com with ESMTPSA id i8sm26581000eds.72.2020.12.19.21.04.36 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 19 Dec 2020 21:04:37 -0800 (PST) Content-Type: multipart/alternative; boundary=Apple-Mail-D4833A85-2953-49D3-80D6-D793BF73F511 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Subject: Re: [FlyRotary] Re: eliminate cushion drive Date: Sun, 20 Dec 2020 07:04:34 +0200 Message-Id: References: In-Reply-To: To: Rotary motors in aircraft X-Mailer: iPhone Mail (17H35) --Apple-Mail-D4833A85-2953-49D3-80D6-D793BF73F511 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable For interest : Come across this flex-coupling interesting that it is design to connect a fl= ywheel to a output shaft. High speed up to 3500 - 7500 rpm =20 210 nm - 3240 nm https://pdf.directindustry.com/pdf/sgf-gmbh-co-kg/sgf-sgflex-3f-flex-couplin= g-assembly-us/34796-787217.html#open Sent from my iPhone Le Roux Breytenbach=20 > On 19 Dec 2020, at 08:05, Stephen Izett stephen.izett@gmail.com wrote: >=20 > =EF=BB=BFThanks very much Neil.=20 > A plan could be, should the RD1C spines parts strength be questionable, le= ave it riveted to the 0.2inch thick aluminium damper plate. Cut/machine that= plate down to the same circumference as the spined part, approx 5 inch, and= Drill the 6 x 10mm holes and attach direct to the EShaft through the spacer= machined to correct size. > Steve Izett >=20 > Sent from my iPhone >=20 >>> On 19 Dec 2020, at 6:42 am, flyrotary@lancaironline.net wrote: >>>=20 >> =EF=BB=BF >> Steve, >> Further to your measurements. The centre to centre of th= e holes in the counterweight (E shaft) is 98mm. Bolt size is 10mm which ma= kes the outer edge of the bolts 108mm or 4.25 inches. The OD measurement o= f my spacer is approx. 5 inches, so it would appear possible to mount tracy,= s splined drive shaft plate direct to the E shaft with the 6 x 10mm bolts an= d spaced out with my spacer which may have to be adjusted for height =E2=80=93= a simple lathe job. This as well known eliminates any =E2=80=98damping=E2=80= =9D in the drive line. >> I do not have the measurements of just how high the splin= ed plate has to be to clear the end of the E Shaft. Again everything is pos= sible with time and money!! >> A question to the group --- What is the Splined drive plate made from? I= thought it was simply a machined cast, but it has been suggested it is a =E2= =80=9Csintered=E2=80=9D casting. (weaker than normal casting) Does anyone k= now? >> Neil. --Apple-Mail-D4833A85-2953-49D3-80D6-D793BF73F511 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
For interest :

Come across this flex-coupling interesting that it is design to connect a f= lywheel to a output shaft.

High speed up to 3500 - 7= 500 rpm  
210 nm - 3240 nm

https://pdf.di= rectindustry.com/pdf/sgf-gmbh-co-kg/sgf-sgflex-3f-flex-coupling-assembly-us/= 34796-787217.html#open


Sent from my iPhone
= Le Roux Breytenbach 

On 19 Dec 2020, at 08:05, Stephen Izett stephen.izett@gmail.com <f= lyrotary@lancaironline.net> wrote:

=EF=BB=BFThanks very much Neil. 
A plan c= ould be, should the RD1C spines parts strength be questionable, leave it riv= eted to the 0.2inch thick aluminium damper plate. Cut/machine that plate dow= n to the same circumference as the spined part, approx 5 inch, and Drill the= 6 x 10mm holes and attach direct to the EShaft through the spacer machined t= o correct size.
Steve Izett

Sent from my iPhone<= /div>

On 19 Dec 2020, at 6:42 a= m, flyrotary@lancaironline.net wrote:

=EF=BB=BF

Steve,

        &n= bsp;       Further to your measurements. = The centre to centre of the holes in the counterweight (E shaft)  is 9= 8mm.  Bolt size is 10mm which makes the outer edge of the bolts 108mm o= r 4.25 inches.    The OD measurement of my spacer is approx. 5= inches, so it would appear possible to mount tracy,s splined drive shaft pl= ate direct to the E shaft with the 6 x 10mm bolts and spaced out with my spa= cer which may have to be adjusted for height =E2=80=93 a simple lathe job.&n= bsp; This as well known eliminates any =E2=80=98damping=E2=80=9D in the driv= e line.

&nb= sp;            &= nbsp;  I do not have the measurements of just how high the splined plat= e has to be to clear the end of the E Shaft.  Again everything is possi= ble with time and money!!

A  question to the group --- What is the Splined drive pl= ate made from?  I thought it was simply a machined cast, but it has bee= n suggested it is a =E2=80=9Csintered=E2=80=9D casting. (weaker than normal c= asting)  Does anyone know?

= Neil.

= --Apple-Mail-D4833A85-2953-49D3-80D6-D793BF73F511--