Return-Path: Delivered-To: craig@dapaero.com Received: from gator4254.hostgator.com by gator4254.hostgator.com with LMTP id OLXGHrWH7GI3fQMAcizydQ (envelope-from ) for ; Thu, 04 Aug 2022 22:00:05 -0500 Return-path: Envelope-to: craig@dapaero.com Delivery-date: Thu, 04 Aug 2022 22:00:05 -0500 Received: from smtprelay0109.b.hostedemail.com ([64.98.42.109]:41710 helo=smtprelay.b.hostedemail.com) by gator4254.hostgator.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1oJnZE-0018yq-SJ for craig@dapaero.com; Thu, 04 Aug 2022 22:00:05 -0500 Received: from omf06.b.hostedemail.com (10.5.19.248.rfc1918.com [10.5.19.248]) by smtprelay06.b.hostedemail.com (Postfix) with ESMTP id 800BF1890C115 for ; Fri, 5 Aug 2022 02:59:53 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: andrewscc@nctv.com) by omf06.b.hostedemail.com (Postfix) with ESMTPA id ECB518A49C43 for ; Fri, 5 Aug 2022 02:59:52 +0000 (UTC) Message-ID: Date: Thu, 4 Aug 2022 19:59:51 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: arm offset Content-Language: en-US To: DAP AERO References: <797ea098-a00a-c0b8-2e5a-ed8f12dfacf4@nctv.com> <68258DD2-2F21-4534-A85E-5B8D6E011D13@dapaero.com> From: Curtis Andrews In-Reply-To: <68258DD2-2F21-4534-A85E-5B8D6E011D13@dapaero.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Stat-Signature: i3kpryede19wzuuw3r8q5njwsg5rao5j X-Rspamd-Server: rspamout03 X-Rspamd-Queue-Id: ECB518A49C43 X-Spam-Status: No, score=-0.10 X-Session-Marker: 616E64726577736363406E6374762E636F6D X-Session-ID: U2FsdGVkX1+CrHPdd5S6+828g1xi8VLVAzPeR/HOahs= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nctv.com; h=message-id:date:mime-version:subject:to:references:from:in-reply-to:content-type:content-transfer-encoding; s=mail; bh=Tjo5SL1X+XtbwslN+3RtEDPsfUHYKhWGOqLPabiOQ/s=; b=EhrFDx1Vy9WZ5dL+IQn0sr1ueO22O+lFznEPmasN2dX7X7qfMobLACvJE+m+hNUlgX1bALOu706HrZOj1Vg2UBvVa9rllXcpPEtXVMW0E9ahFOhsTw/KAd+9+6MzdyMl8OSP71vbhpp+cfZu5wiUOh14wyIzlRs15SihMJF61kg90KSYMJe9Gfiy0wuwERDBOjsz6B296x0hWQOxR1q3pRvmCkPz1a0+U+Dlcl5cz7JzQ0Dejx5Gh6u/Duardn6ZpEVi8ccSqOZuyeL44+eHVP4VEiG8cNw44Z/0z/mjcDqnosnxzjM3NneSilf8eVnq/hi7Jo3QCOdmGHYLHns0XQ== X-HE-Tag: 1659668392-267014 X-Spam-Status: No, score=0.2 X-Spam-Score: 2 X-Spam-Bar: / X-Spam-Flag: NO it appears from the model that the rocker arm is steeper at the bottom of the stroke, which is not right, as the stroke must match above and below center line. If you connect the rod to the rocker arm at the arm with no offset, is the movement equal?  IF not, then that must be the reason for the offset. if the crank was directly under the connection on the rocker arm, then it would be equal, since my crank is only half of the horizontal distance from the rocker pivot, one would think i would need less of the leg on the offset. On 8/3/22 8:35 pm, DAP AERO wrote: > Will draw tomorrow to try and catch up > >> On Aug 3, 2022, at 7:59 PM, Curtis Andrews wrote: >> >> Question, where is best location for connecting rod to connect to pump bar? >> >> attached are two original documents >> >> I have scaled 10" horizontal and 4" vertically >> >> found drawings of 9"Hor and 5 Vert and 8" Hor and 7 vert >> >> but using chain and sprocket and not gears, the relationship between crank and bar is not the same as the originals. >> >> people are 1.5" taller, but fatter, and we are not going miles so needs to be easier for short distances. 120 years ago, four men could produce .6 HP today, four men can produce .4 HP so needs to be 1/3 eaisier. >> >> >> building generally a Sheffield #2 car but 16" wheels. 12" stroke was standard, but i can shorten if better. >> >> -- >> Thank You >> >> Curtis Andrews >> 1336 E Oak St >> Othello WA. 99344 >> andrewscc@aol.com >> 509 346 8108 -- Thank You Curtis Andrews 1336 E Oak St Othello WA. 99344 andrewscc@aol.com 509 346 8108