Return-Path: Delivered-To: craig.andrews@tessol-inc.com Received: from gator4254.hostgator.com by gator4254.hostgator.com with LMTP id SK+6AqhN9GJWzAQAcizydQ (envelope-from ) for ; Wed, 10 Aug 2022 19:30:32 -0500 Return-path: Envelope-to: craig.andrews@tessol-inc.com Delivery-date: Wed, 10 Aug 2022 19:30:32 -0500 Received: from [24.20.173.51] (port=53173 helo=smtpclient.apple) by gator4254.hostgator.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1oLw5n-001K9v-MW; Wed, 10 Aug 2022 19:30:31 -0500 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: Craig Andrews Mime-Version: 1.0 (1.0) Subject: Re: off set Message-Id: <58C37311-E9E9-4E30-801F-67F0913CF1CA@tessol-inc.com> References: <556EAE7E-8E7E-43EC-ACB3-CBB9DB2D4A71@tessol-inc.com> In-Reply-To: <556EAE7E-8E7E-43EC-ACB3-CBB9DB2D4A71@tessol-inc.com> To: Curt Andrews Date: Wed, 10 Aug 2022 17:30:30 -0700 X-Mailer: iPhone Mail (19G71) Email 4 videos, 6 screen captures > On Aug 10, 2022, at 11:20 AM, craig Andrews = wrote: >=20 > =EF=BB=BFI will look at this >=20 > I had thought for a while that the stub arm was there to even out the work= done by each person. But then I noticed the difference in endpoint reversa= l and abandoned the equal work theory. It could be there for both. >=20 > I started to thing about actually making force & motion equations and calc= ulating them. To do that, I needed to convince myself that the connecting r= od could theoretically be a cable for half the drive gear revolution so the r= od cannot not apply any force other that along its axis. I still think that i= s correct. >=20 >> On Aug 10, 2022, at 7:54 AM, Curt Andrews wrote: >>=20 >> =EF=BB=BF This is my midnight theory, i need to check this weekend. >>=20 >> to make the stroke equal on both the up and down, and left and right of t= he rocking beam, the top dead center and bottom dead center needs to be 180 d= egrees apart. projecting a line from the center of the sprocket, through th= e connecting rod to a projected point of practical connection in the centerl= ine of the rocker arm; In the bottom of stroke, they all line up, but in th= e top of the up stroke, the rocking beam swinging up, shifts the practical p= oint of connection towards the sprocket such that the top dead center is off= say 40 degrees, causing the down stroke to be shorter. Moving the actual p= oint of connection onto an offset arm that shifts the connecting rod angle r= educes the difference in the stroke.=20 >>=20 >> --=20 >> Curt Andrews >> 1336 E Oak >> Othello WA 99344 >> 509 346 8108