---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Thu 06/02/16: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:08 AM - Official TeamGrumman-List Usage Guidelines (Matt Dralle) 2. 09:25 AM - Engine ground runs (Dennis Cheever) 3. 12:26 PM - Re: Engine ground runs (Gary L Vogt) 4. 12:49 PM - Re: Engine ground runs (Linn Walters) 5. 01:58 PM - Re: Engine ground runs (Gary L Vogt) ________________________________ Message 1 _____________________________________ Time: 12:08:32 AM PST US From: Matt Dralle Subject: TeamGrumman-List: Official TeamGrumman-List Usage Guidelines Dear Listers, Please read over the TeamGrumman-List Usage Guidelines below. The complete TeamGrumman-List FAQ including these Usage Guidelines can be found at the following URL: http://www.matronics.com/FAQs/TeamGrumman-List.FAQ.html Thank you, Matt Dralle Matronics Email List Administrator ****************************************************************************** TeamGrumman-List Usage Guidelines ****************************************************************************** The following details the official Usage Guidelines for the TeamGrumman-List. You are encouraged to read it carefully, and to abide by the rules therein. Failure to use the TeamGrumman-List in the manner described below may result in the removal of the subscribers from the List. TeamGrumman-List Policy Statement The purpose of the TeamGrumman-List is to provide a forum of discussion for things related to this particular discussion group. The List's goals are to serve as an information resource to its members; to deliver high-quality content; to provide moral support; to foster camaraderie among its members; and to support safe operation. Reaching these goals requires the participation and cooperation of each and every member of the List. To this end, the following guidelines have been established: - Please keep all posts related to the List at some level. Do not submit posts concerning computer viruses, urban legends, random humor, long lost buddies' phone numbers, etc. etc. - THINK carefully before you write. Ask yourself if your post will be relevant to everyone. If you have to wonder about that, DON'T send it. - Remember that your post will be included for posterity in an archive that is growing in size at an extraordinary rate. Try to be concise and terse in your posts. Avoid overly wordy and lengthy posts and responses. - Keep your signature brief. Please include your name, email address, aircraft type/tail number, and geographic location. A short line about where you are in the building process is also nice. Avoid bulky signatures with character graphics; they consume unnecessary space in the archive. - DON'T post requests to the List for information when that info is easily obtainable from other widely available sources. Consult the web page or FAQ first. - If you want to respond to a post, DO keep the "Subject:" line of your response the same as that of the original post. This makes it easy to find threads in the archive. - When responding, NEVER quote the *entire* original post in your response. DO use lines from the original post to help "tune in" the reader to the topic at hand, but be selective. The impact that quoting the entire original post has on the size of the archive can not be overstated! - When the poster asks you to respond to him/her personally, DO NOT then go ahead and reply to the List. Be aware that clicking the "reply" button on your mail package does not necessarily send your response to the original poster. You might have to actively address your response with the original poster's email address. - DO NOT use the List to respond to a post unless you have something to add that is relevant and has a broad appeal. "Way to go!", "I agree", and "Congratulations" are all responses that are better sent to the original poster directly, rather than to the List at large. - When responding to others' posts, avoid the feeling that you need to comment on every last point in their posts, unless you can truly contribute something valuable. - Feel free to disagree with other viewpoints, BUT keep your tone polite and respectful. Don't make snide comments, personally attack other listers, or take the moral high ground on an obviously controversial issue. This will only cause a pointless debate that will hurt feelings, waste bandwidth and resolve nothing. - Occasional posts by vendors or individuals who are regularly subscribed to a given List are considered acceptable. Posts by List members promoting their respective products or items for sale should be of a friendly, informal nature, and should not resemble a typical SPAM message. The List isn't about commercialism, but is about sharing information and knowledge. This applies to everyone, including those who provide products to the entire community. Informal presentation and moderation should be the operatives with respect to advertising on the Lists. ------- [This is an automated posting.] do not archive ________________________________ Message 2 _____________________________________ Time: 09:25:22 AM PST US From: "Dennis Cheever" Subject: TeamGrumman-List: Engine ground runs Hi all, I posted over on GG about dynamic propeller balancing and got overwhelming positive comments, particularly from Jim Shafer at Power Flow. Obviously all of us with Jaguar cowlings do have the Power Flow exhaust. There is a YouTube video of a Tiger getting balanced and I noticed that with the original cowling they are running it with the top removed but the bottom still in place. My question to other Jaguar cowl owners (and more specifically to Gary) is, would it be safe to do this with the Jag cowl? I would think completely removing it prior to an engine run would be better, but thought I would ask. Dennis Cheever N3752W @ L45 ________________________________ Message 3 _____________________________________ Time: 12:26:53 PM PST US From: Gary L Vogt Subject: Re: TeamGrumman-List: Engine ground runs You can=99t get any engine cooling with the cowling off. I really don=99t know why the cowling needs to come off. Unless it=99s for an accelerometer. I had a prop balance and they didn=99t take the cowling off. Keep in mind that any post balancing nicks, or filing of the nicks in your prop, negates the prop balance. Gary > On Jun 2, 2016, at 9:13 AM, Dennis Cheever wrote: > > Hi all, > > I posted over on GG about dynamic propeller balancing and got overwhelming positive comments, particularly from Jim Shafer at Power Flow. Obviously all of us with Jaguar cowlings do have the Power Flow exhaust. There is a YouTube video of a Tiger getting balanced and I noticed that with the original cowling they are running it with the top removed but the bottom still in place. My question to other Jaguar cowl owners (and more specifically to Gary) is, would it be safe to do this with the Jag cowl? I would think completely removing it prior to an engine run would be better, but thought I would ask. > > > Dennis Cheever > N3752W @ L45 ________________________________ Message 4 _____________________________________ Time: 12:49:17 PM PST US Subject: Re: TeamGrumman-List: Engine ground runs From: Linn Walters Actually, the final run(s) should be done with the airplane ready for flight. I've taken the test set on a flight when we couldn't get static RPM close to cruise RPM. I've always attached the accelerometer to the engine. The accelerometer is sensitive enough that it will pick up motion of the airframe from winds making the final run(s) tough to nail down. I don't agree that filing knicks negates the balance ..... but it will change it a little ...... and not enough to tell on a re-balance. Any nick/filing large enough to negate the balance job would probably render the prop unairworthy .... unless at the very tip. No, I don't do dynamic balances any more. :-( Linn On 6/2/2016 3:26 PM, Gary L Vogt wrote: > You cant get any engine cooling with the cowling off. > > I really dont know why the cowling needs to come off. Unless its > for an accelerometer. I had a prop balance and they didnt take the > cowling off. > > Keep in mind that any post balancing nicks, or filing of the nicks in > your prop, negates the prop balance. > > Gary > > >> On Jun 2, 2016, at 9:13 AM, Dennis Cheever > > wrote: >> >> Hi all, >> I posted over on GG about dynamic propeller balancing and got >> overwhelming positive comments, particularly from Jim Shafer at Power >> Flow. Obviously all of us with Jaguar cowlings do have the Power >> Flow exhaust. There is a YouTube video of a Tiger getting balanced >> and I noticed that with the original cowling they are running it >> with the top removed but the bottom still in place. My question to >> other Jaguar cowl owners (and more specifically to Gary) is, would it >> be safe to do this with the Jag cowl? I would think completely >> removing it prior to an engine run would be better, but thought I >> would ask. >> Dennis Cheever >> N3752W @ L45 > ________________________________ Message 5 _____________________________________ Time: 01:58:04 PM PST US From: Gary L Vogt Subject: Re: TeamGrumman-List: Engine ground runs I stopped doing prop balancing 20 years ago. > On Jun 2, 2016, at 12:48 PM, Linn Walters wrote: > > Actually, the final run(s) should be done with the airplane ready for flight. I've taken the test set on a flight when we couldn't get static RPM close to cruise RPM. I've always attached the accelerometer to the engine. The accelerometer is sensitive enough that it will pick up motion of the airframe from winds making the final run(s) tough to nail down. > I don't agree that filing knicks negates the balance ..... but it will change it a little ...... and not enough to tell on a re-balance. Any nick/filing large enough to negate the balance job would probably render the prop unairworthy .... unless at the very tip. > No, I don't do dynamic balances any more. :-( > Linn > > On 6/2/2016 3:26 PM, Gary L Vogt wrote: >> You can=99t get any engine cooling with the cowling off. >> >> I really don=99t know why the cowling needs to come off. Unless it=99s for an accelerometer. I had a prop balance and they didn=99t take the cowling off. >> >> Keep in mind that any post balancing nicks, or filing of the nicks in your prop, negates the prop balance. >> >> Gary >> >> >>> On Jun 2, 2016, at 9:13 AM, Dennis Cheever > wrote: >>> >>> Hi all, >>> >>> I posted over on GG about dynamic propeller balancing and got overwhelming positive comments, particularly from Jim Shafer at Power Flow. Obviously all of us with Jaguar cowlings do have the Power Flow exhaust. There is a YouTube video of a Tiger getting balanced and I noticed that with the original cowling they are running it with the top removed but the bottom still in place. My question to other Jaguar cowl owners (and more specifically to Gary) is, would it be safe to do this with the Jag cowl? I would think completely removing it prior to an engine run would be better, but thought I would ask. >>> >>> >>> Dennis Cheever >>> N3752W @ L45 >> > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message teamgrumman-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/TeamGrumman-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/teamgrumman-list Browse Digests http://www.matronics.com/digest/teamgrumman-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.