X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: "Dennis Haverlah clouduster@austin.rr.com" Received: from [47.43.26.137] (HELO p-impout006.msg.pkvw.co.charter.net) by logan.com (CommuniGate Pro SMTP 6.4.0) with ESMTPS id 2652399 for flyrotary@lancaironline.net; Mon, 27 Nov 2023 22:09:17 -0500 Received-SPF: pass receiver=logan.com; client-ip=47.43.26.137; envelope-from=clouduster@austin.rr.com Received: from [IPv6:::ffff:192.168.1.206] ([70.113.125.95]) by cmsmtp with ESMTPA id 7oSwr7EqTvHkw7oSyrdyLw; Tue, 28 Nov 2023 03:09:01 +0000 X-Authority-Analysis: v=2.4 cv=BN2gEXcG c=1 sm=1 tr=0 ts=656559cd a=Cw/xZXpcEDeGatJv+UpiEQ==:117 a=Cw/xZXpcEDeGatJv+UpiEQ==:17 a=xqWC_Br6kY4A:10 a=HpEJnUlJZJkA:10 a=r5MxXpUMunB100FN80QA:9 a=QEXdDO2ut3YA:10 a=yMhMjlubAAAA:8 a=SSmOFEACAAAA:8 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: RD-C input shaft failure Date: Mon, 27 Nov 2023 21:08:53 -0600 Importance: normal X-Priority: 3 In-Reply-To: References: Content-Type: multipart/alternative; boundary="_CC16EF87-2BE7-4A57-8B37-ED869FD41031_" X-CMAE-Envelope: MS4xfN8JpsrpFKsYfNcWJTCCg1axn6YUk1TtblIClS0ZNJxbjXQka2ALQJcs+NxX0h9pHuEd3P2CVy2SGmTLc7qq0AdA3xi76qNuX+9/304MGZ8LEIYkDi8T t8MuDUw0Or3D3aFDqJWv7bEPIXlPMRgZT8y6ZJ33XireMCnQ2WEN7hfoha6VW3fwQcrXKtANBZyUGeSjSpsrZCZPBsehww88c+MaTdF7vdkFBe4+6m+rNJPQ Message-ID: --_CC16EF87-2BE7-4A57-8B37-ED869FD41031_ Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The shaft between the RX-8 engine and the reduction drive unit has a gear s= ecured to the shaft with a steel pin. (The gear drives the planetary gear = set). The steel pin sheared off allowing the gear to rotate on the shaft. = I understand this has happened to others in the past. I=E2=80=99ve hear= d that several fixes were proposed or tried =E2=80=93 welding the pin to th= e gear, doing more deforming of the pin at the gear surface or installing = a tighter or larger pin. I have another new shaft/gear assembly I plan to= install after I incorporate improvements. =20 When the pin sheared the gear only rotated about 3/32 inch on the shaft. Th= e two pieces of the pin outside the shaft were thrown out of the gear and a= pparently were chewed into very small particles by the planetary gear asse= mbly. =20 =20 Any info. You may have will be highly appreciated! I have about 920 hours on my RX-8 engine in my RV-7A Dennis Haverlah=20 512-921-0636 Sent from Mail for Windows --_CC16EF87-2BE7-4A57-8B37-ED869FD41031_ Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"

The s= haft between the RX-8 engine and the reduction drive unit has a gear secure= d to the shaft with a steel pin. =C2=A0(The gear drives the planetary gear = set). The steel pin sheared off allowing the gear to rotate on the=C2=A0 sh= aft.=C2=A0=C2=A0 I understand this has happened to others in the past.=C2= =A0=C2=A0 I=E2=80=99ve heard that several fixes were proposed or tried =E2= =80=93 welding the pin to the gear, doing more deforming of =C2=A0the pin a= t the gear surface or installing a tighter or larger pin.=C2=A0 =C2=A0I hav= e another new shaft/gear assembly I plan to install=C2=A0 after I incorpora= te =C2=A0improvements.=C2=A0

When the pin s= heared the gear only rotated about 3/32 inch on the shaft. The two pieces o= f the pin outside the shaft were thrown out of the gear and apparently were= chewed into very small particles by the =C2=A0planetary gear assembly.=C2= =A0

=C2=A0

Any info. You m= ay have will be highly appreciated!

I ha= ve about 920 hours on my RX-8 engine in my RV-7A

Dennis Haverlah

512-921-0636

Sent from Mail for Windows

= --_CC16EF87-2BE7-4A57-8B37-ED869FD41031_--