---------------------------------------------------------- RV7-List Digest Archive --- Total Messages Posted Tue 04/24/07: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:25 AM - Re: RV-7 engine/prop options () 2. 03:17 AM - Re: Re: RV-7 engine/prop options (Greg Blakey) 3. 06:10 AM - Re: Torque Values for Sensors and other not nuts and bolts stuff ?Torque Values for Sensors and other not nuts and (Jim Percy) 4. 06:50 AM - Re: Re: RV-7 engine/prop options (Hinde, Frank George (Corvallis)) 5. 06:51 AM - Re: Re: RV-7 engine/prop options (J. Brunke) 6. 06:55 AM - Re: Re: RV-7 engine/prop options (Hinde, Frank George (Corvallis)) 7. 08:50 AM - Re: RV-7 engine/prop optionsRV-7 engine/prop options (Robert) 8. 09:46 AM - Re: RV-7 engine/prop optionsRV-7 engine/prop options (Hinde, Frank George (Corvallis)) 9. 06:12 PM - Re: RV-7 engine/prop optionsRV-7 engine/prop options (Charlie England) ________________________________ Message 1 _____________________________________ Time: 02:25:00 AM PST US From: Subject: RV7-List: Re: RV-7 engine/prop options Hartzells or the BA new ones do not have RPM limits. James Cowls come in short lengths, so extended hubs are not needed. MT props are way slower with their fat wood / fiberglass blades. MT props are also more money, cost more than twice as much to overhaul and may take many many weeks and shipping to Germany or who knows to have work done. Hartzells can be locally overhauled, often in a few days. Also nicks and delaminations on a MT means removal from plane and disassembly. A nick in a hartrzell can be filed out on the plane. As far as other "experimental props" you are taking more chance flying them than a extended hub hartzell doing 3.0 g aerobatics. Ask them if they have done flight test and vibration survey with the Lyc on a RV or with electronic ignition or high compression pistons. The new Hartzells have been tested and optimized for RV's as has the Sensenich. Guess who makes the fastest props for RV's? (5-9 mph) Hartzell and Sensenich and they are both the best value and the least expensive of constant speed and fixed props respectively. Plus they are backed up by a large company. George >From: "J. Brunke" >Subject: Re: RV7-List: RV-7 engine/prop options > >Charlie, > >About a year ago I was talking to a women in Hartzell's engineering >department about the hub extension. > >Like you I am leaning towards the James cowl so the extension is >definitely needed. > >They also don't have any RPM typerestrictions on their props like Hartzell >does. > >MT's are an excellent prop, but he said it was quite a hassle getting the >correct length hub from them. --------------------------------- Ahhh...imagining that irresistible "new car" smell? Check outnew cars at Yahoo! Autos. ________________________________ Message 2 _____________________________________ Time: 03:17:59 AM PST US From: "Greg Blakey" Subject: Re: RV7-List: Re: RV-7 engine/prop options Interesting George....though clearly WhirlWind may be worth a look! Faster and significantly lighter than the Hartzell, specifically developed for RV's and with no RPM limitations. Take a look at the review carried out in the RVaitor in 2005. Cheers, Greg Blakey (FADEC IOF360-M1B and WhirlWind 200RV) ----- Original Message ----- From: gmcjetpilot@yahoo.com To: rv7-list@matronics.com Sent: Tuesday, April 24, 2007 7:23 PM Subject: RV7-List: Re: RV-7 engine/prop options Hartzells or the BA new ones do not have RPM limits. James Cowls come in short lengths, so extended hubs are not needed. MT props are way slower with their fat wood / fiberglass blades. MT props are also more money, cost more than twice as much to overhaul and may take many many weeks and shipping to Germany or who knows to have work done. Hartzells can be locally overhauled, often in a few days. Also nicks and delaminations on a MT means removal from plane and disassembly. A nick in a hartrzell can be filed out on the plane. As far as other "experimental props" you are taking more chance flying them than a extended hub hartzell doing 3.0 g aerobatics. Ask them if they have done flight test and vibration survey with the Lyc on a RV or with electronic ignition or high compression pistons. The new Hartzells have been tested and optimized for RV's as has the Sensenich. Guess who makes the fastest props for RV's? (5-9 mph) Hartzell and Sensenich and they are both the best value and the least expensive of constant speed and fixed props respectively. Plus they are backed up by a large company. George >From: "J. Brunke" >Subject: Re: RV7-List: RV-7 engine/prop options > >Charlie, > >About a year ago I was talking to a women in Hartzell's engineering >department about the hub extension. > >Like you I am leaning towards the James cowl so the extension is >definitely needed. > >They also don't have any RPM typerestrictions on their props like Hartzell >does. > >MT's are an excellent prop, but he said it was quite a hassle getting the >correct length hub from them. ------------------------------------------------------------------------- ----- Ahhh...imagining that irresistible "new car" smell? Check out new cars at Yahoo! Autos. ________________________________ Message 3 _____________________________________ Time: 06:10:22 AM PST US From: "Jim Percy" Subject: Re: RV7-List: Torque Values for Sensors and other not nuts and bolts stuff ?Torque Values for Sensors and other not nuts and Those values can be found in a Lycoming overhaul manual, except maybe the oil filler spout. The crush type gaskets are not torqued. They are tightened until there is contact (finger tight) then further tightened a specified number of degrees. I don't have my manual handy so I don't know the actual values. The seam on the gasket goes on the engine side. For the non-specified hardware like carb nuts, etc, there is a chart of torque values based on diameter and thread pitch of the fastener. Again, I don't have the numbers available right now. That overhaul manual is probably a good investment if you don't have it. Jim Percy ________________________________ Message 4 _____________________________________ Time: 06:50:30 AM PST US Subject: RE: RV7-List: Re: RV-7 engine/prop options From: "Hinde, Frank George (Corvallis)" Correct george I had forgotten that James now make short cowls. However, with an Airflow performace throttle body there is no way it would all fit on a forward facing sump..I am sceptical if a bendix would fit either but I don't know for sure...This is assuming ou want the James alternate air source...I could not get mine to fit (FF sump, AFP with an extended cowl). Frank ________________________________ From: owner-rv7-list-server@matronics.com [mailto:owner-rv7-list-server@matronics.com] On Behalf Of gmcjetpilot@yahoo.com Sent: Tuesday, April 24, 2007 2:24 AM Subject: RV7-List: Re: RV-7 engine/prop options Hartzells or the BA new ones do not have RPM limits. James Cowls come in short lengths, so extended hubs are not needed. MT props are way slower with their fat wood / fiberglass blades. MT props are also more money, cost more than twice as much to overhaul and may take many many weeks and shipping to Germany or who knows to have work done. Hartzells can be locally overhauled, often in a few days. Also nicks and delaminations on a MT means removal from plane and disassembly. A nick in a hartrzell can be filed out on the plane. As far as other "experimental props" you are taking more chance flying them than a extended hub hartzell doing 3.0 g aerobatics. Ask them if they have done flight test and vibration survey with the Lyc on a RV or with electronic ignition or high compression pistons. The new Hartzells have been tested and optimized for RV's as has the Sensenich. Guess who makes the fastest props for RV's? (5-9 mph) Hartzell and Sensenich and they are both the best value and the least expensive of constant speed and fixed props respectively. Plus they are backed up by a large company. George >From: "J. Brunke" >Subject: Re: RV7-List: RV-7 engine/prop options > >Charlie, > >About a year ago I was talking to a women in Hartzell's engineering >department about the hub extension. > >Like you I am leaning towards the James cowl so the extension is >definitely needed. > >They also don't have any RPM typerestrictions on their props like Hartzell >does. > >MT's are an excellent prop, but he said it was quite a hassle getting the >correct length hub from them. ________________________________ Ahhh...imagining that irresistible "new car" smell? Check out new cars at Yahoo! Autos. ________________________________ Message 5 _____________________________________ Time: 06:51:50 AM PST US From: "J. Brunke" Subject: Re: RV7-List: Re: RV-7 engine/prop options George, I was just looking at Van's website store. If you click on the Hartzell props, just below the list of props is a link to click on that takes you to Hartzell. They proceed to list RPM restrictions there for the various models. Do you have a different prop than what is on this list? I agree that the maintenance issue is a good selling point and the price. However I know for a fact that the AeroComposite props do not carry any RPM limits. In fact they have tested them at over 3000 RPM's. Being composite they do not have the resonance problem that can occur with a metal prop at the mid RPM's listed on Hartzell's site. By the way I am getting good info from this thread. Please put some differing opinions in here. That's what makes this list worth reading. John Brunke ----- Original Message ----- From: gmcjetpilot@yahoo.com To: rv7-list@matronics.com Sent: Tuesday, April 24, 2007 3:23 AM Subject: RV7-List: Re: RV-7 engine/prop options Hartzells or the BA new ones do not have RPM limits. James Cowls come in short lengths, so extended hubs are not needed. MT props are way slower with their fat wood / fiberglass blades. MT props are also more money, cost more than twice as much to overhaul and may take many many weeks and shipping to Germany or who knows to have work done. Hartzells can be locally overhauled, often in a few days. Also nicks and delaminations on a MT means removal from plane and disassembly. A nick in a hartrzell can be filed out on the plane. As far as other "experimental props" you are taking more chance flying them than a extended hub hartzell doing 3.0 g aerobatics. Ask them if they have done flight test and vibration survey with the Lyc on a RV or with electronic ignition or high compression pistons. The new Hartzells have been tested and optimized for RV's as has the Sensenich. Guess who makes the fastest props for RV's? (5-9 mph) Hartzell and Sensenich and they are both the best value and the least expensive of constant speed and fixed props respectively. Plus they are backed up by a large company. George >From: "J. Brunke" >Subject: Re: RV7-List: RV-7 engine/prop options > >Charlie, > >About a year ago I was talking to a women in Hartzell's engineering >department about the hub extension. > >Like you I am leaning towards the James cowl so the extension is >definitely needed. > >They also don't have any RPM typerestrictions on their props like Hartzell >does. > >MT's are an excellent prop, but he said it was quite a hassle getting the >correct length hub from them. ------------------------------------------------------------------------- ----- Ahhh...imagining that irresistible "new car" smell? Check out new cars at Yahoo! Autos. ________________________________ Message 6 _____________________________________ Time: 06:55:51 AM PST US Subject: RE: RV7-List: Re: RV-7 engine/prop options From: "Hinde, Frank George (Corvallis)" Significantly faster????...First I've heard of that..Are you sure?? Frank ________________________________ From: owner-rv7-list-server@matronics.com [mailto:owner-rv7-list-server@matronics.com] On Behalf Of Greg Blakey Sent: Tuesday, April 24, 2007 3:20 AM Subject: Re: RV7-List: Re: RV-7 engine/prop options Interesting George....though clearly WhirlWind may be worth a look! Faster and significantly lighter than the Hartzell, specifically developed for RV's and with no RPM limitations. Take a look at the review carried out in the RVaitor in 2005. Cheers, Greg Blakey (FADEC IOF360-M1B and WhirlWind 200RV) ________________________________ Message 7 _____________________________________ Time: 08:50:27 AM PST US From: "Robert" Subject: Re: RV7-List: RV-7 engine/prop optionsRV-7 engine/prop options I have a question regarding engine mounts. Is there a requirement for a different engine mount when using prop extensions? Van's has (had) two different mounts available and my impression was that the one was for a longer engine prop combination. Robert Seccombe Future -7 builder. ________________________________ Message 8 _____________________________________ Time: 09:46:57 AM PST US Subject: RE: RV7-List: RV-7 engine/prop optionsRV-7 engine/prop options From: "Hinde, Frank George (Corvallis)" Nope!...I have a feeling the mount for the o320 might be longer than for the 0360...i.e lighter engine is moved further forward for correct balance. I vaguely remember reading this somewhere...But no an o360 with a prop extension would use the same mount as an o360 without an extension Frank 7a ________________________________ From: owner-rv7-list-server@matronics.com [mailto:owner-rv7-list-server@matronics.com] On Behalf Of Robert Sent: Tuesday, April 24, 2007 8:48 AM Subject: Re: RV7-List: RV-7 engine/prop optionsRV-7 engine/prop options I have a question regarding engine mounts. Is there a requirement for a different engine mount when using prop extensions? Van's has (had) two different mounts available and my impression was that the one was for a longer engine prop combination. Robert Seccombe Future -7 builder. ________________________________ Message 9 _____________________________________ Time: 06:12:17 PM PST US From: Charlie England Subject: Re: RV7-List: RV-7 engine/prop optionsRV-7 engine/prop options That's the answer Van's gave me when I called a few weeks ago: the 320 mount moves the engine forward for cg reasons. Charlie Hinde, Frank George (Corvallis) wrote: > Nope!...I have a feeling the mount for the o320 might be longer than for > the 0360...i.e lighter engine is moved further forward for correct balance. > > I vaguely remember reading this somewhere...But no an o360 with a prop > extension would use the same mount as an o360 without an extension > > Frank 7a > > ------------------------------------------------------------------------ > *From:* owner-rv7-list-server@matronics.com > [mailto:owner-rv7-list-server@matronics.com] *On Behalf Of *Robert > *Sent:* Tuesday, April 24, 2007 8:48 AM > *To:* rv7-list@matronics.com > *Subject:* Re: RV7-List: RV-7 engine/prop optionsRV-7 engine/prop options > > I have a question regarding engine mounts. Is there a requirement for a > different engine mount when using prop extensions? Vans has (had) two > different mounts available and my impression was that the one was for a > longer engine prop combination. > > > > Robert Seccombe > > Future -7 builder. > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv7-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV7-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/rv7-list Browse Digests http://www.matronics.com/digest/rv7-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.