X-Virus-Scanned: clean according to Sophos on Logan.com From: "Neil Unger" Received: from mail-pg0-f53.google.com ([74.125.83.53] verified) by logan.com (CommuniGate Pro SMTP 6.2c3) with ESMTPS id 9919096 for flyrotary@lancaironline.net; Sun, 16 Jul 2017 04:37:07 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.83.53; envelope-from=12348ung@gmail.com Received: by mail-pg0-f53.google.com with SMTP id v190so6914252pgv.2 for ; Sun, 16 Jul 2017 01:37:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language; bh=NZLCOsmRO0F4gpGmAHqlSkL5dJwAA6pe9ibQHmBZKdo=; b=rTO4A7dSX5U03ZcrTNAxTFdt5gkcFLAGqkekxT2XT+bNpH6vO7z7/0HI+Z7t+6hg/t VUDz3ElB1v6zuuv448nz0WvfVefUrrb7cuybHGPhSg6HSeEuqkqh93qgyuF+VEPiCDUI nygO9GmlfcLqM7QsnHg2uC0S533PxOWGomFbourCbGnrwQ/COBoCLATx4HNiLKwySBFp 8HI68zQlz8qiplzXrnF1hIRF3CMdEMUbrzv3VfM1enCqIeP+YVarzTF3o9wzJZS6ewMJ LVfpxmKfCdwLlhRsVOH0GOkbl4Xw9yJODyHbD/mijH6l6RyPsdwYpBbaO1kLkMz/LEo1 IPtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=NZLCOsmRO0F4gpGmAHqlSkL5dJwAA6pe9ibQHmBZKdo=; b=FRx0fMpB5T00nElhQ5ttEL8O/ONf0VQ042D1o/8aFWAO208EOw6ZvdtJBK/t8i7CK1 xjIgU5FKNrUUcl4v8ummHqcwnlkpVZOwTpk/5WRKCLpIUh26nRHCzbG98zIk5aeIb+kz UoCI4i0C2hKfD0KuVGpl6nhyxIlufQYkEH7v7rbt4X71ZOgQ9so9MXjw7LoGqwMXikBi eheK0Iwx1CiXit5w74L4E6VNFsuZs+rX2Cb7Ezza7vSnBrO/VgzVOeqEwL0KgxA9x2Yz N4UGR+lmRnknOvxA1VvO/6R6crOWnyzj7z6UYZheNAm/EEZJ+c0Y0P4CqE49fIIgCQQA zU8A== X-Gm-Message-State: AIVw11022QgUY+EhEQtzNxuit+hAS/RXafVB69XNhKEujM5Mvcljr8t4 pRdHg045BLOohz2ySPs= X-Received: by 10.99.104.3 with SMTP id d3mr22944203pgc.278.1500194207787; Sun, 16 Jul 2017 01:36:47 -0700 (PDT) Return-Path: <12348ung@gmail.com> Received: from [192.168.0.100] ([103.198.24.78]) by smtp.gmail.com with ESMTPSA id b8sm31651237pfd.65.2017.07.16.01.36.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 16 Jul 2017 01:36:45 -0700 (PDT) Subject: Re: [FlyRotary] Re: Engine Mount design To: Rotary motors in aircraft References: Message-ID: <9eace846-3835-e23f-bf57-505508eda907@gmail.com> Date: Sun, 16 Jul 2017 18:36:12 +1000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------FA648E4C237DBBAA472D7CA3" Content-Language: en-US This is a multi-part message in MIME format. --------------FA648E4C237DBBAA472D7CA3 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Mark, sorry for the del;ay in reply but I have been on leave for a week, apologies. Yes these measurements are for my glasair sportsman, but most have similar offsets. If in doubt just get a look at a commanche 400 which looks like the engine is almost sideways. What I did was to generate a center point out 3 feet from the firewall (or thereabouts) with a fixed frame, then I made an extension from the psru and the mounting p[late which had a point on the other end that was fitted into the offsets drawn on the firewall. Then an easy job to make up the engine mounts. Took longer to make up the frame with level and plumb bob.,. Good luck. Neil. On 7/11/2017 8:01 AM, Mark McClure wrote: > Neil, > > Are these offsets for Glasair or other aircraft? I was told by > Factory Rep that the Glasair had minimal offsets. So I was not going > to build them in. The other issue I see is that degrees are based on > the exact same thrust point which I have never been able to get them > to give me and I do not have a cowling to generate. > > Mark > > >> On Jul 10, 2017, at 5:31 PM, Neil Unger > > wrote: >> >> Mark, Do not forget the "offsets" with the engine. The exact >> numbers can only be sourced from the factory, but from memory the >> engine has to face to the right 1.5 degrees and down 1.78 degrees. >> Check these figures with the factory. regards, Neil. >> >> >> On 7/11/2017 6:35 AM, Mark McClure wrote: >>> Well I think I have designed my mount for the Glasair. Overall I >>> think it will be a bit overkill but I am ok with that. >>> >>> Should put the CG close to the same spot as for the Lyco. Thrust >>> point in the same spot. Green bars were part of the Glasair mount >>> for a Lycoming. (There was also one between the two upper points but >>> I don’t think any of them are truly necessary with the stabilization >>> of the plate. Yellow bar I am calling optional at this point to >>> make it easier to work with intake/exhaust. Another idea we had was >>> to weld on a flange for both sides of the yellow bar and have it >>> bolt on during final install. >>> >>> Thoughts? >>> >>> Mark >>> >>> >>> >>> >> > --------------FA648E4C237DBBAA472D7CA3 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Mark, sorry for the del;ay in reply but I have been on leave for a week, apologies.  Yes these measurements are for my glasair sportsman, but most have similar offsets.  If in doubt just get a look at a commanche 400 which looks like the engine is almost sideways.  What I did was to generate a center point out 3 feet from the firewall (or thereabouts) with a fixed frame, then I made an extension from the psru and the mounting p[late which had a point on the other end that was fitted into the offsets drawn on the firewall.  Then an easy job to make up the engine mounts.  Took longer to make up the frame with level and plumb bob.,.   Good luck.  Neil.


On 7/11/2017 8:01 AM, Mark McClure wrote:
Neil,

Are these offsets for Glasair or other aircraft?  I was told by Factory Rep that the Glasair had minimal offsets.  So I was not going to build them in. The other issue I see is that degrees are based on the exact same thrust point which I have never been able to get them to give me and I do not have a cowling to generate.

Mark


On Jul 10, 2017, at 5:31 PM, Neil Unger <flyrotary@lancaironline.net> wrote:

Mark,  Do not forget the "offsets" with the engine.  The exact numbers can only be sourced from the factory, but from memory the engine has to face to the right 1.5 degrees and down 1.78 degrees.  Check these figures with the factory.  regards,  Neil.


On 7/11/2017 6:35 AM, Mark McClure wrote:
Well I think I have designed my mount for the Glasair.  Overall I think it will be a bit overkill but I am ok with that.

Should put the CG close to the same spot as for the Lyco.  Thrust point in the same spot.  Green bars were part of the Glasair mount for a Lycoming. (There was also one between the two upper points but I don’t think any of them are truly necessary with the stabilization of the plate.  Yellow bar I am calling optional at this point to make it easier to work with intake/exhaust.  Another idea we had was to weld on a flange for both sides of the yellow bar and have it bolt on during final install.

Thoughts?

Mark



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