X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from hub026-NJ-6.exch026.serverdata.net ([206.225.166.169] verified) by logan.com (CommuniGate Pro SMTP 6.0.6) with ESMTPS id 6460552 for flyrotary@lancaironline.net; Mon, 09 Sep 2013 12:47:23 -0400 Received-SPF: none receiver=logan.com; client-ip=206.225.166.169; envelope-from=jwhaley@datacast.com Received: from MBX026-E1-NJ-6.exch026.domain.local ([10.240.14.56]) by HUB026-NJ-6.exch026.domain.local ([10.240.14.230]) with mapi id 14.03.0123.003; Mon, 9 Sep 2013 09:46:46 -0700 From: Jeff Whaley To: Rotary motors in aircraft Subject: Re: [Fly Rotary] First Flight jitters Thread-Topic: Re: [Fly Rotary] First Flight jitters Thread-Index: Ac6tfCvknAsR2MNCSV6sTIBh5JX9CQ== Date: Mon, 9 Sep 2013 16:46:47 +0000 Message-ID: <234B758DE9A64449BEB6BB5D1345CA7A361182AA@mbx026-e1-nj-6.exch026.domain.local> Accept-Language: en-CA, en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-originating-ip: [209.87.232.162] Content-Type: multipart/related; boundary="_005_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_"; type="multipart/alternative" MIME-Version: 1.0 --_005_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_ Content-Type: multipart/alternative; boundary="_000_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_" --_000_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable As others have stated: report prop characteristics ... combined with that, = what is your WOT static rpm? Tie the tail to a tree or your truck and take the engine to WOT - you can o= nly do this for 5-6 seconds. You have to know this static condition as it i= s a base-line for your engine/prop configuration. You also need to go there= to ensure everything is working (fuel delivery, engine smoothness, fluid h= ose connections, etc.) under simulated take-off conditions. Bring the thro= ttle slowly but steady back to idle to ensure the engine doesn't quit - rep= eat as many times as necessary for confidence-building. Jeff From: shipchief@aol.com Subject: First Flight jitters Date: Mon, 9 Sep 2013 00:47:08 -0400 (EDT) To: flyrotary@lancaironline.net [Message Header] [Undecoded Message] I've been slowly building my RV-8 with 13BT engine for about 14 years...! On June 13th 2013 it received the coveted Airworthiness Certificate. That s= ame day I detonated my engine due to the trailing spark plug holes being ma= chined oversize in an attempt to improve the single spark plug power, shoul= d the leading plug ignition fail. This, and possibly advanced ignition, and= possibly over-boost detonated my engine on it's first high power taxi test= . That took about 2.5 seconds. Now I've rebuilt the engine with new unmodified rotor housings, and it runs= better than ever. I've re-marked the timing marks on the pulley, and reset= the timing, though not to 4000 RPM yet. today I checked it. At 3000 RPM my= hat and hearing protection blew off. 11 degrees BTDC, and 16" manifold pre= ssure. I've been taxiing around at modest RPM, it's great. I've consistently been = idling at about 1600 RPM, (730 prop RPM) and sometimes as low as 1490, (680= Prop RPM) smoothly. That is slow enough to keep the brakes from getting to= o hot. I've done run ups and brief bursts of power to 4200 Engine RPM, (1917 Prop = RPM) which is about 32" manifold pressure, and seen 37" manifold pressure b= riefly. I know this is not enough power to take off, although I have done a= Pre-take off to 50 MPH with this power before powering down with roll out = to the end of the runway. I suppose it would fly off and maybe clear the t= rees at this power. I've lifted the tail, and rocked the wings with the ail= erons. It steers well and the brakes work. The water level in the engine stays up between flights as does the oil, and= the water temp today was consistent 163 F oil about 173 with the highest = observed 183F. I did about 4 pre-take off passes with taxi back, with excel= lent temperature control and throttle response. A couple of oil fitting were tightened looking for an oil seep. 7.3 hours engine running time on the EM2, about 2 hours since the engine ov= erhaul. I don't think I'm at all ready to fly this thing. I'm missing something, so= offer up some advice, I'm all ears! This message, and the documents attached hereto, is intended only for the a= ddressee and may contain privileged or confidential information. Any unauth= orized disclosure is strictly prohibited. If you have received this message= in error, please notify us immediately so that we may correct our internal= records. Please then delete the original message. Thank you. --_000_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

As others have stated: report prop characteristics &= #8230; combined with that, what is your WOT static rpm?

Tie the tail to a tree or your truck and take the en= gine to WOT – you can only do this for 5-6 seconds. You have to know = this static condition as it is a base-line for your engine/prop configurati= on. You also need to go there to ensure everything is working (fuel delivery, engine smoothness, fluid hose connec= tions, etc.) under simulated take-off conditions.  Bring the throttle = slowly but steady back to idle to ensure the engine doesn’t quit R= 11; repeat as many times as necessary for confidence-building.

Jeff

 

From:

shipchief@aol.com

Subject:

First Flight jitters

Date:

Mon, 9 Sep 2013 00:47:08 -0400 (EDT)

To:

flyrotary@lancaironline.net

<= img border=3D"0" width=3D"10" height=3D"13" id=3D"_x0000_i1039" src=3D"cid:= image001.gif@01CEAD59.145C9730" alt=3D"Message Header">

3D"Undecoded<= /p>

I've been slowly building m= y RV-8 with 13BT engine for about 14 years...!

On June 13th 2013 it r= eceived the coveted Airworthiness Certificate. That same day I detonated my= engine due to the trailing spark plug holes being machined oversize in an attempt to improve the single spark plug power, should the leading p= lug ignition fail. This, and possibly advanced ignition, and possibly over-= boost detonated my engine on it's first high power taxi test. That took abo= ut 2.5 seconds.

Now I've rebuilt the engine= with new unmodified rotor housings, and it runs better than ever. I've re-= marked the timing marks on the pulley, and reset the timing, though not to 4000 RPM yet. today I checked it. At 3000 RPM my hat and hea= ring protection blew off. 11 degrees BTDC, and 16" manifold pressure.<= /span>

I've been taxiing around at= modest RPM, it's great. I've consistently been idling at about 1600 RPM, (= 730 prop RPM) and sometimes as low as 1490, (680 Prop RPM) smooth= ly. That is slow enough to keep the brakes from getting too hot.

I've done run ups and brief= bursts of power to 4200 Engine RPM, (1917 Prop RPM) which is about 32"= ; manifold pressure, and seen 37" manifold pressure briefly. I know this is not enough power to take off, although I have done a P= re-take off to 50 MPH with this power before powering down with r= oll out to the end of the runway.  I suppose it would fly off and= maybe clear the trees at this power. I've lifted the tail, and rocked the wings with the ailerons. It steers well and the brakes work= .

The water level in the engi= ne stays up between flights as does the oil, and the water temp today = was consistent 163 F oil  about 173 with the highest observed 183F. I did about 4 pre-take off passes with taxi back, with excellent tem= perature control and throttle response.

A couple of oil fitting wer= e tightened looking for an oil seep.

7.3 hours engine running ti= me on the EM2, about 2 hours since the engine overhaul.

I don't think I'm at all re= ady to fly this thing. I'm missing something, so offer up some advice, I'm = all ears!

 

This message, and the documents attached hereto, is intended only for the a= ddressee and may contain privileged or confidential information. Any unauth= orized disclosure is strictly prohibited. If you have received this message= in error, please notify us immediately so that we may correct our internal records. Please then delete the origin= al message. Thank you. --_000_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_-- --_005_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_ Content-Type: image/gif; name="image001.gif" Content-Description: image001.gif Content-Disposition: inline; filename="image001.gif"; size=849; creation-date="Mon, 09 Sep 2013 16:46:46 GMT"; modification-date="Mon, 09 Sep 2013 16:46:46 GMT" Content-ID: Content-Transfer-Encoding: base64 R0lGODdhCgANAPcAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwMDcwKbK8AAAAAAAKgAAVQAAfwAA qgAA1AAqAAAqKgAqVQAqfwAqqgAq1ABVAABVKgBVVQBVfwBVqgBV1AB/AAB/KgB/VQB/fwB/qgB/ 1ACqAACqKgCqVQCqfwCqqgCq1ADUAADUKgDUVQDUfwDUqgDU1CoAACoAKioAVSoAfyoAqioA1Coq ACoqKioqVSoqfyoqqioq1CpVACpVKipVVSpVfypVqipV1Cp/ACp/Kip/VSp/fyp/qip/1CqqACqq KiqqVSqqfyqqqiqq1CrUACrUKirUVSrUfyrUqirU1FUAAFUAKlUAVVUAf1UAqlUA1FUqAFUqKlUq VVUqf1UqqlUq1FVVAFVVKlVVVVVVf1VVqlVV1FV/AFV/KlV/VVV/f1V/qlV/1FWqAFWqKlWqVVWq f1WqqlWq1FXUAFXUKlXUVVXUf1XUqlXU1H8AAH8AKn8AVX8Af38Aqn8A1H8qAH8qKn8qVX8qf38q qn8q1H9VAH9VKn9VVX9Vf39Vqn9V1H9/AH9/Kn9/VX9/f39/qn9/1H+qAH+qKn+qVX+qf3+qqn+q 1H/UAH/UKn/UVX/Uf3/Uqn/U1KoAAKoAKqoAVaoAf6oAqqoA1KoqAKoqKqoqVaoqf6oqqqoq1KpV AKpVKqpVVapVf6pVqqpV1Kp/AKp/Kqp/Vap/f6p/qqp/1KqqAKqqKqqqVaqqf6qqqqqq1KrUAKrU KqrUVarUf6rUqqrU1NQAANQAKtQAVdQAf9QAqtQA1NQqANQqKtQqVdQqf9QqqtQq1NRVANRVKtRV VdRVf9RVqtRV1NR/ANR/KtR/VdR/f9R/qtR/1NSqANSqKtSqVdSqf9SqqtSq1NTUANTUKtTUVdTU f9TUqtTU1AAAAAwMDBkZGSYmJjMzMz8/P0xMTFlZWWZmZnJycn9/f4yMjJmZmaWlpbKysr+/v8zM zNjY2OXl5fLy8v/78KCgpICAgP8AAAD/AP//AAAA//8A/wD//////ywAAAAACgANAAAINgDxCRw4 EAC+fwgTIjT4DwCAAwIXHlSYkKHDhxEZUpTYEONEjRstOoR4ECRFkSQ5bux4saXDgAA7 --_005_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_ Content-Type: image/gif; name="image002.gif" Content-Description: image002.gif Content-Disposition: inline; filename="image002.gif"; size=857; creation-date="Mon, 09 Sep 2013 16:46:46 GMT"; modification-date="Mon, 09 Sep 2013 16:46:46 GMT" Content-ID: Content-Transfer-Encoding: base64 R0lGODdhCgANAPcAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwMDcwKbK8AAAAAAAKgAAVQAAfwAA qgAA1AAqAAAqKgAqVQAqfwAqqgAq1ABVAABVKgBVVQBVfwBVqgBV1AB/AAB/KgB/VQB/fwB/qgB/ 1ACqAACqKgCqVQCqfwCqqgCq1ADUAADUKgDUVQDUfwDUqgDU1CoAACoAKioAVSoAfyoAqioA1Coq ACoqKioqVSoqfyoqqioq1CpVACpVKipVVSpVfypVqipV1Cp/ACp/Kip/VSp/fyp/qip/1CqqACqq KiqqVSqqfyqqqiqq1CrUACrUKirUVSrUfyrUqirU1FUAAFUAKlUAVVUAf1UAqlUA1FUqAFUqKlUq VVUqf1UqqlUq1FVVAFVVKlVVVVVVf1VVqlVV1FV/AFV/KlV/VVV/f1V/qlV/1FWqAFWqKlWqVVWq f1WqqlWq1FXUAFXUKlXUVVXUf1XUqlXU1H8AAH8AKn8AVX8Af38Aqn8A1H8qAH8qKn8qVX8qf38q qn8q1H9VAH9VKn9VVX9Vf39Vqn9V1H9/AH9/Kn9/VX9/f39/qn9/1H+qAH+qKn+qVX+qf3+qqn+q 1H/UAH/UKn/UVX/Uf3/Uqn/U1KoAAKoAKqoAVaoAf6oAqqoA1KoqAKoqKqoqVaoqf6oqqqoq1KpV AKpVKqpVVapVf6pVqqpV1Kp/AKp/Kqp/Vap/f6p/qqp/1KqqAKqqKqqqVaqqf6qqqqqq1KrUAKrU KqrUVarUf6rUqqrU1NQAANQAKtQAVdQAf9QAqtQA1NQqANQqKtQqVdQqf9QqqtQq1NRVANRVKtRV VdRVf9RVqtRV1NR/ANR/KtR/VdR/f9R/qtR/1NSqANSqKtSqVdSqf9SqqtSq1NTUANTUKtTUVdTU f9TUqtTU1AAAAAwMDBkZGSYmJjMzMz8/P0xMTFlZWWZmZnJycn9/f4yMjJmZmaWlpbKysr+/v8zM zNjY2OXl5fLy8v/78KCgpICAgP8AAAD/AP//AAAA//8A/wD//////ywAAAAACgANAAAIPgDxCRw4 EAC+fwcQKjxgMCHDhAD+GUQYEcDDhhIzVjwIkSJDfA8zQjxYUWRDixVHmnSI0aHCiS5ZAphJs2ZA ADs= --_005_234B758DE9A64449BEB6BB5D1345CA7A361182AAmbx026e1nj6exch_--