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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: datacast.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM6PR18MB2393.namprd18.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 742bd78a-a5b1-4b84-2221-08d874274fdd X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Oct 2020 12:05:46.3275 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a07f70c7-0440-4b97-b25f-a93dca3f0980 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: uyR+ilB/NvCrvDh1VtMBmCryah+aKCP8p1ibnPK0dd1TI0um4k66khLqyjhOQEQrtycxE3S/GkkcR+Zd8cZZ+A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR18MB3146 Hi Matt, when you write 600 or 700 rpm - do you mean engine rpm or prop rpm= ?? My engine idles at 1700 rpm (engine), because that's where I set it: divide= d by 2.85 =3D 596 prop rpm - my engine and the gearbox get rough around 15= 50 ... so I keep it away from there. Don't know absolute AFR numbers but my engine usually idles richer than 14.= 7 (stoich) when cold but after it warms up I find it idles better (post-fli= ght taxi back to hangar) a bit on the lean side. Timing - set as per Tracy's manual (25 deg? BTDC) and have never moved it, = as EC2 advances timing with rpm ... Jeff What AFR and timing are people running for idle, taxi, takeoff, climb, crui= se, descent?=20 idle =3D 11afr, 20 timing I seem to have to be around 11afr for it to stay alive. Still trying to get= it to idle around 600rpm, maybe bump it up to 700rpm to be smoother withou= t dieing and shaking apart.=20 taxi / takeoff / climb =3D 13.2afr, 28 timing cruise - not sure aft, 28 timing decent - not sure aft, 32 timing Not sure what the plane likes. I tried 14afr, but the MAP really get's low = and engine shakes. Guessing it should be more rich? I attached the timing table and split rotary table (second email). Not sure= how to tune timing, I just want safe values for now. - Matt Boiteau