---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Mon 03/03/08: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:48 AM - Prop indexing (Wheeler North) 2. 08:00 AM - Re: RV Crash (Bob) 3. 08:39 AM - Re: RV Crash (Ron Lee) 4. 08:57 AM - Re: RV Crash (Sam Buchanan) 5. 09:42 AM - Re: Prop indexing (Bill Boyd) 6. 02:07 PM - Re: RV Crash (linn Walters) 7. 02:38 PM - Re: Prop indexing (Louis Willig) 8. 03:05 PM - Re: Prop indexing (Charlie England) 9. 08:06 PM - trade mag synchronizer (jblake43@bellsouth.net) 10. 09:00 PM - Re: trade mag synchronizer (Vanremog@aol.com) 11. 11:49 PM - Re: Prop indexing (Michael W Stewart) ________________________________ Message 1 _____________________________________ Time: 06:48:39 AM PST US Subject: RV-List: Prop indexing From: "Wheeler North" Load on the propeller is not symetrical as the blades travel around the circumfrence, and the crankshaft is subjected to accelerating and decelerating loads as it spins around. The phase of these is tested for certified prop/engine combinations at the design indexing, but it likely is not tested at other indexing combinations. Just because it is smoother to your butt does not mean it is smooother to your engine, or to engine parts within. You takes your chances when using alternate indexing. ________________________________ Message 2 _____________________________________ Time: 08:00:19 AM PST US From: Bob Subject: Re: RV-List: RV Crash I learned about this from the IAC Arco list. Any more news from the RV fliers in the area? Bob RV6 "Wicked Witch of the West" "I was informed that Phil Schadt ( sp ?) was Killed today in an RV inFL... FOXNEWS.com has more info. He was taxiing in to a pancake breakfast and another a/c landed on his machine...Both in his a/c were killed." ________________________________ Message 3 _____________________________________ Time: 08:39:29 AM PST US From: "Ron Lee" Subject: Re: RV-List: RV Crash > > I learned about this from the IAC Arco list. Any more news from the > RV fliers in the area? > > Bob > RV6 "Wicked Witch of the West" > > Go to vanairforce and there is a thread there with an eyewitness account. The RV guys apparently had no chance to escape their fate. Ron Lee ________________________________ Message 4 _____________________________________ Time: 08:57:54 AM PST US From: Sam Buchanan Subject: Re: RV-List: RV Crash Bob wrote: > > I learned about this from the IAC Arco list. Any more news from the RV > fliers in the area? Quite a bit of info with links to local news video on the VAF forum. Three confirmed fatalities at this point. Very sad. Sam Buchanan ________________________________ Message 5 _____________________________________ Time: 09:42:42 AM PST US From: "Bill Boyd" Subject: Re: RV-List: Prop indexing Lycoming factory told me to have at it with indexing if I wanted to; they had no concerns with it. -Bill / Stormy On Mon, Mar 3, 2008 at 9:44 AM, Wheeler North wrote: > > Load on the propeller is not symetrical as the blades travel around the > circumfrence, and the crankshaft is subjected to accelerating and > decelerating loads as it spins around. The phase of these is tested for > certified prop/engine combinations at the design indexing, but it likely > is > not tested at other indexing combinations. > > Just because it is smoother to your butt does not mean it is smooother to > your engine, or to engine parts within. > > You takes your chances when using alternate indexing. > > ________________________________ Message 6 _____________________________________ Time: 02:07:31 PM PST US From: linn Walters Subject: Re: RV-List: RV Crash Bob wrote: > > I learned about this from the IAC Arco list. Any more news from the > RV fliers in the area? > > Bob > RV6 "Wicked Witch of the West" > > > "I was informed that Phil Schadt ( sp ?) was Killed today in an RV > inFL... FOXNEWS.com has more info. He was taxiing in to a pancake > breakfast and another a/c landed on his machine...Both in his a/c were > killed." Our flight to Arthur Dunn was diverted because the airport was closed. Chuck Durbeck from X59 took the attached pictures. I didn't read the VAF account, so some may be wrong info. The Velocity was landing behind other aircraft and was overrunning aircraft on the runway. The velocity initiated a go-around, but was unsuccessful, left the runway on the right side and clipped the RV-8 that was on the exit taxiway. the wing from the Velocity sliced through the cockpit of the RV8, which is where the occuppants died. The Velocity continued in the grass between the runway and parallel taxiway, coming to rest inverted, and on fire. Both occupants of the Velocity were severely burned, and the passenger succomed in the hospital. the last word I have is that the pilot (from Sebastian, FL) is still alive in critical condition. Truly a sad day, indeed. Linn ________________________________ Message 7 _____________________________________ Time: 02:38:07 PM PST US From: Louis Willig Subject: Re: RV-List: Prop indexing At 09:44 AM 3/3/2008, you wrote: > ><<your engine, or to engine parts within.>>> > >You takes your chances when using alternate indexing. Wheeler, I have heard this several times before over the past 12 years on the list. Several knowledgeable pros have said the same thing. Propeller engineering is a science of its own, and usually should be left to pros. I can give many of you a good example. My RV-4, with it's IO-360, Hartzell C/S prop happens to run smoothest (to my butt) at 20-21" manifold pressure and 2100-2300 RPM !! Those of you with my prop know that this RPM range is prohibited/ restricted because it produces a vibration mode that causes permanent and additive damage to the prop. You can't see it, and common sense and "butt feel" would never lead you to suspect this damage is occurring. I would love to reduce the vibration of my IO-360, but I would only go with proven methods such as dynamic balancing and improved engine mounts, or any other proven-to-be-safe method. I lost my first RV-4 from a broken prop due to a bird strike. That's scarry. Don't mean to preach. Just passing along precautions to the list. Louis ________________________________ Message 8 _____________________________________ Time: 03:05:52 PM PST US From: Charlie England Subject: Re: RV-List: Prop indexing I thought I sent this to the list, but it seems I just clicked 'reply' to an off-list email from Bill. Anyway, here's the word from Lycoming, for those who are understandably worried about deviating from the norm with props: copied message: If you get motivated to spend the extra time & money, the Lyc 'Service Instruction' is on this page of the Lycoming web site (I got lucky): > http://www.lycoming.com/support/publications/service-instructions/index.jsp > The document subject is 'Propeller Flange Bushing location': > http://www.lycoming.com/support/publications/service-instructions/pdfs/SI1098G.pdf > Charlie ________________________________ Message 9 _____________________________________ Time: 08:06:40 PM PST US From: jblake43@bellsouth.net Subject: RV-List: trade mag synchronizer I have , used in good condition, an Eastern magneto synchronizer and a US Tools differential cylinder pressure tester. I need a ratcheting crimper with BNC dies (rg-58 and rg-400) and a 4 way indent crimper for d-sub machine pins ( similar to those sold by Stein air). If you would like to trade, Pease email me directly. Jim Blake jblake43@bellsouth.net
I have , used in good condition, an Eastern magneto synchronizer and a US Tools differential cylinder pressure tester.
I need a ratcheting crimper with BNC dies (rg-58 and rg-400) and a 4 way indent crimper for d-sub machine pins ( similar to those sold by Stein air). If you would like to trade, Pease email me directly.
Jim Blake
 
________________________________ Message 10 ____________________________________ Time: 09:00:38 PM PST US From: Vanremog@aol.com Subject: Re: RV-List: trade mag synchronizer In a message dated 3/3/2008 8:09:03 P.M. Pacific Standard Time, jblake43@bellsouth.net writes: I need a ratcheting crimper with BNC dies (rg-58 and rg-400) and a 4 way indent crimper for d-sub machine pins ( similar to those sold by Stein air). If you would like to trade, Pease email me directly. ==================================================== Jim- I have several M22520/2-01 hand crimpers that I would consider selling, but no positioners. I do have the Daniels catalog at work to determine which positioner you need for the dsubs. N1GV (RV-6A, Flying 887hrs, O-360-A1A, C/S, Silicon Valley) **************It's Tax Time! Get tips, forms, and advice on AOL Money & Finance. (http://money.aol.com/tax?NCID=aolprf00030000000001) ________________________________ Message 11 ____________________________________ Time: 11:49:56 PM PST US Subject: Re: RV-List: Prop indexing From: Michael W Stewart Some information you might find useful with regards to indexing. This was my experience with real data. In fact lots of data. Enjoy, Mike http://mstewart.net/super8/propclock/index.htm "Wheeler North" To Sent by: owner-rv-list-ser cc ver@matronics.com Subj ect RV-List: Prop indexing 03/03/2008 09:44 AM Please respond to rv-list@matronics .com Load on the propeller is not symetrical as the blades travel around the circumfrence, and the crankshaft is subjected to accelerating and decelerating loads as it spins around. The phase of these is tested for certified prop/engine combinations at the design indexing, but it likel y is not tested at other indexing combinations. Just because it is smoother to your butt does not mean it is smooother to your engine, or to engine parts within. You takes your chances when using alternate indexing. ======================== ============ ======================== ============ ======================== ============ ======================== ============ ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-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/rv-list Browse Digests http://www.matronics.com/digest/rv-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.