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german mt prop translation
s_harren <s_harren@...>
The german word "senkrecht" does mean vertical. Only difference in the
german text is that it doesn't say "the most vertical position" it only says "the vertical position"... so long Sebastian --- In Q-LIST@yahoogroups.com, "David J. Gall" <David@...> wrote: original German text?
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Re: prop size?
David J. Gall
Anyone here read German? If so, is the word "vertical" in the English
translation below a correct interpretation of the meaning of the original German text? 5.3 Bei Propellern ohne Paßzapfen oder Indexsenkungen, Zündkerze des dem Propeller am nächsten liegenden Zylinders entfernen und Kurbelwelle drehen bis OT erreicht ist. 5.4 In dieser Stellung (gilt nur für 2-Blatt) Propeller mit den Blättern senkrecht auf das Triebwerk stecken und Flanschbolzen bzw. Stoppmuttern über Kreuz anziehen. U-Scheiben nicht vergessen. Bei 3-Blatt und 4-Blatt Propellern ist, falls nicht anderweitig vorgeschrieben, keine besondere Stellung der Blätter zur Kurbelwelle erforderlich. Paarweise mit 0,8 mm Draht sichern. 5.3 Propellers without index pins or drive bushing bores: remove the spark plug from the cylinder nearest to the propeller and turn the crankshaft until TDC is reached. 5.4 Install the propeller (applicable for 2-blade models, only) in this crankshaft position with the blades in the most vertical direction. Torque flange bolts or stop nuts crosswise two by two. Do not forget the washers. Safety wire in pairs with 0.032" stainless steel. The position of 3- or 4-blade propellers relative to the crankshaft is not as critical, unless specifically required. Thanks, David J. Gall _____ From: Q-LIST@yahoogroups.com [mailto:Q-LIST@yahoogroups.com] On Behalf Of MartinErni@aol.com Sent: Tuesday, June 06, 2006 11:54 AM To: Q-LIST@yahoogroups.com Subject: Re: [Q-LIST] Re: prop size? David, I have a 2 blade electric constant speed MT. Earnest [Non-text portions of this message have been removed]
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Re: prop size?
David J. Gall
Hey Ron,
toggle quoted messageShow quoted text
I thought you did NOT want a wood prop. The MT prop is wood.... David J. Gall
-----Original Message-----
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Re: Spring Fling 06
REBECCA SIMPSON
Keith,
I too want to say thanks for hosting the flyin. Between graduations Friday PM and the kids calling to say they were hit by a deer, our time there was limited. Seeing you Quickie up close made the whole effort worth it for me. I Borrowed that hi tech digital camera from work, just wish I could work it. I set it up to record Sam's presentation but it must have a built in timer as it shut off after 18 minutes. I did get about 70% of your inflight that I can send either DVD's or MP4 files if anyone is interested. There is a few good shots of your flight and the Q1 on the ground. Bits of Sam's pieces and things I found interesting on the DF, Pulsar etc as well as 311DM departing. If I can get the MP4 small enough, I will post it to the files section. If anyone wants a 31 minute DVD with about 6 minutes of Q1 and a lot of broken or shaky bits, email me your address direct and I will send them off snail mail. With Luck, I will be flying in next year and be able to hold the camera still Thanks again, Tad Simpson --- In Q-LIST@yahoogroups.com, "Keith Welsh" <kfly@...> wrote: one at first, glad everyone liked em. I received several compliments so I guess I'll fix them again. Oneperson asked about the local of the pig and it did come from the home farm. I just grabbed a few boxes, said adios, and headed for the airport. Thanks for mentioning the airport, was wondering how it wasreceived. And glad you liked the Q1 demo. I have very few in flight pix. If you have any could you send a few. knows what lays around the corner at these events. airports, felt welcomed by all. First time I saw a Q-1 perform, very cool! Nicelooking machine too.training Aviation maintenance schools Aviation maintenance schools Aviation Aviation art---------- YAHOO! GROUPS LINKSof Service. ----------
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Re: prop size?
Ron Weiss <ronweiss4@...>
---Hey Earnest,I've heard really scarry things about that MT Prop! You
toggle quoted messageShow quoted text
should send it to me, I'll check it out for you! Don't fret, I'll send you a Warp Drive to keep you going. Remember, it's only your health I'm concerned about! RonIn Q-LIST@yahoogroups.com, MartinErni@... wrote:
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Re: prop size?
David J. Gall
Leon,
Why do you always send me scrambling for the books??! :) David J. Gall David; With the offset thrust line (I assume a belt reduction with the 2/1 ratio rather than planetary) is is possable that whirl mode resonance might also be a problem and contribute to prop flutter even if properly "clocked"? I have seen visable resonance of this type with some ultralight aircraft. ============ Leon
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Re: Updated Q2 plans online....
Doug Humble <hawkidoug@...>
Nice job Dan!
toggle quoted messageShow quoted text
Doug "Hawkeye" Humble www.asignabove.net Omaha NE N25974
----- Original Message -----
From: olderprograms To: Q-LIST@yahoogroups.com Sent: Tuesday, June 06, 2006 11:52 AM Subject: [Q-LIST] Updated Q2 plans online.... I fixed the Q2 plans posted on my blog so that they were easier to navigate and search. The "Table of Contents" now has links to the start of each of the 20 chapters, and I added "next - previous - Return to Table of Contents" buttons at the top of each page. Hopefully this will make it easier look through them. Let me know if you have any ideas or suggestions. More to come soon! You can visit the Q2 plans directly by clicking here: http://www.quickheads.com/danyager/index.php?/categories/4-Q2-Plans Let me know what you think. Cheers, Dan Q2 kit # 2025
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Re: prop size?
David J. Gall
Earnest,
Could it be a bad translation from the German? I checked the installation instructions on the MT-props website and I could find no reference such as you describe for their fixed-pitch two-blade prop. http://www.mt-propeller.com/pdf/manuals/e-112.pdf. David J. Gall _____ From: Q-LIST@yahoogroups.com [mailto:Q-LIST@yahoogroups.com] On Behalf Of MartinErni@aol.com Sent: Tuesday, June 06, 2006 8:25 AM To: Q-LIST@yahoogroups.com Subject: Re: [Q-LIST] Re: prop size? David, I have always mounted my props as you describe until I got my MT. MT installation instructions specifically state that the prop is to be mounted vertically at TDC. Any idea why they do it differently? Earnest
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Re: prop size?
Ron Weiss <ronweiss4@...>
-Thanks Jon, Any info helps! Ron-- In Q-LIST@yahoogroups.com, "Jon
Finley" <jon@...> wrote: for help.prop setup on the Soob. It can be very frustrating but remember thatthe fun is typically in the journey and not just the destination.for high-rpm use by Gary Hunter - remember, I am direct-drive.Currently, the blades are set at 14 degrees. I do not think this prop is veryback it up. However; it is very adjustable and that is the reason that I'mless than 60".run woodonaSubaruEJ 22,165hp. at 5500rpm. 2 to 1 reduction. No pure propsplease....Ron
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Re: prop size?
Ron Weiss <ronweiss4@...>
-Thanks Jon, Any info helps! Ron-- In Q-LIST@yahoogroups.com, "Jon
Finley" <jon@...> wrote: for help.prop setup on the Soob. It can be very frustrating but remember thatthe fun is typically in the journey and not just the destination.for high-rpm use by Gary Hunter - remember, I am direct-drive.Currently, the blades are set at 14 degrees. I do not think this prop is veryback it up. However; it is very adjustable and that is the reason that I'mless than 60".run woodonaSubaruEJ 22,165hp. at 5500rpm. 2 to 1 reduction. No pure propsplease....Ron
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Re: Updated Q2 plans online....
Steve Ham <sham@...>
Dan,
toggle quoted messageShow quoted text
Nice job putting all of this together. Looks like a lot of time and work. Steve Ham
-----Original Message-----
From: Q-LIST@yahoogroups.com [mailto:Q-LIST@yahoogroups.com] On Behalf Of olderprograms Sent: Tuesday, June 06, 2006 12:52 PM To: Q-LIST@yahoogroups.com Subject: [Q-LIST] Updated Q2 plans online.... I fixed the Q2 plans posted on my blog so that they were easier to navigate and search. The "Table of Contents" now has links to the start of each of the 20 chapters, and I added "next - previous - Return to Table of Contents" buttons at the top of each page. Hopefully this will make it easier look through them. Let me know if you have any ideas or suggestions. More to come soon! You can visit the Q2 plans directly by clicking here: http://www.quickhea <http://www.quickheads.com/danyager/index.php?/categories/4-Q2-Plans> ds.com/danyager/index.php?/categories/4-Q2-Plans Let me know what you think. Cheers, Dan Q2 kit # 2025
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Updated Q2 plans online....
olderprograms <groups@...>
I fixed the Q2 plans posted on my blog so that they were easier to
navigate and search. The "Table of Contents" now has links to the start of each of the 20 chapters, and I added "next - previous - Return to Table of Contents" buttons at the top of each page. Hopefully this will make it easier look through them. Let me know if you have any ideas or suggestions. More to come soon! You can visit the Q2 plans directly by clicking here: http://www.quickheads.com/danyager/index.php?/categories/4-Q2-Plans Let me know what you think. Cheers, Dan Q2 kit # 2025
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Re: prop size?
Jay <scheevel@...>
Ron Weiss wrote:
"...because all the info I can get is that some reduction units don't like 2 bladed wood props(harmonic issues). One guy used a Prince and liked the performance, but, there was this vibration?...." It sounds like the problem may not be the prop by itself. I would look instead at the prop/reduction drive combination. The two components together may produce the harmonic vibration that is noted. Let me explain: If the reduction drive assembly is not stiff enough, then it also can contribute to the harmonics of the system. The prop itself is not designed to be completely stiff (nor should it be), but props are designed and balanced so as not to destructively resonate on their own. However, when a prop is bolted to another assembly that is not stiff enough, the elastic/inertial response of the combination could produce unanticipated harmonic oscillations. In the traditional aircraft installation, the prop is bolted to the crankshaft (prop-flange), which is VERY stiff and is also dampened by the engine mass. In this case, the harmonic modes of the prop/engine combination are outside the range of any prop oscillation modes, so significant harmonic oscillations are effectively damped. This may not be the case when the prop is connected to a reduction drive where the reduction drive is less stiff than the standard crankshaft. This is probably part of the reason the FAA certifies prop-engine combinations instead of just the prop. Something to consider.. Jay Scheevel - Tri-Q, still building
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Re: prop size?
Steve Ham <sham@...>
toggle quoted messageShow quoted text
-----Original Message-----
From: Q-LIST@yahoogroups.com [mailto:Q-LIST@yahoogroups.com] On Behalf Of Jon Finley Sent: Tuesday, June 06, 2006 9:10 AM To: Q-LIST@yahoogroups.com Subject: [Q-LIST] Re: prop size? Jon, What Did you do ??? give up The Great North for some sunshine and sand???__Are you keeping your Q? Steve Ham ._,_.___ Messages <http://us.lrd.yahoo.com/_ylc=X3oDMTM2anZoNXE3BF9TAzk3MzU5NzE0BGdycElkAzIxMj QxNTgEZ3Jwc3BJZAMxNjAwMDY1NjE4BG1zZ0lkAzI0NjIzBHNlYwNmdHIEc2xrA3Z0cGMEc3RpbW UDMTE0OTU5OTkxMwR0cGNJZAMyNDU2OQ--;_ylg=1/SIG=11n95e4od/**http%3a/groups.yah oo.com/group/Q-LIST/message/24569> in this topic (22) <http://us.lrd.yahoo.com/_ylc=X3oDMTJxOGR1dW9wBF9TAzk3MzU5NzE0BGdycElkAzIxMj QxNTgEZ3Jwc3BJZAMxNjAwMDY1NjE4BG1zZ0lkAzI0NjIzBHNlYwNmdHIEc2xrA3JwbHkEc3RpbW UDMTE0OTU5OTkxMw--;_ylg=1/SIG=12dgnm5om/**http%3a/groups.yahoo.com/group/Q-L IST/post%3fact=reply%26messageNum=24623> Reply (via web post) | Start <http://us.lrd.yahoo.com/_ylc=X3oDMTJlMTNnNWMyBF9TAzk3MzU5NzE0BGdycElkAzIxMj QxNTgEZ3Jwc3BJZAMxNjAwMDY1NjE4BHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTE0OTU5OTkxMw --;_ylg=1/SIG=11e031uv1/**http%3a/groups.yahoo.com/group/Q-LIST/post> a new topic Messages <http://us.lrd.yahoo.com/_ylc=X3oDMTJlNDA2ZmxuBF9TAzk3MzU5NzE0BGdycElkAzIxMj QxNTgEZ3Jwc3BJZAMxNjAwMDY1NjE4BHNlYwNmdHIEc2xrA21zZ3MEc3RpbWUDMTE0OTU5OTkxMw --;_ylg=1/SIG=11insn6js/**http%3a/groups.yahoo.com/group/Q-LIST/messages> | Files <http://us.lrd.yahoo.com/_ylc=X3oDMTJmYzFsMHV2BF9TAzk3MzU5NzE0BGdycElkAzIxMj QxNTgEZ3Jwc3BJZAMxNjAwMDY1NjE4BHNlYwNmdHIEc2xrA2ZpbGVzBHN0aW1lAzExNDk1OTk5MT M-;_ylg=1/SIG=11fpj243e/**http%3a/groups.yahoo.com/group/Q-LIST/files> | Photos <http://us.lrd.yahoo.com/_ylc=X3oDMTJlMHJqcjBnBF9TAzk3MzU5NzE0BGdycElkAzIxMj QxNTgEZ3Jwc3BJZAMxNjAwMDY1NjE4BHNlYwNmdHIEc2xrA3Bob3QEc3RpbWUDMTE0OTU5OTkxMw --;_ylg=1/SIG=11gm17cm7/**http%3a/groups.yahoo.com/group/Q-LIST/photos> | Members <http://us.lrd.yahoo.com/_ylc=X3oDMTJlMXJxZWMwBF9TAzk3MzU5NzE0BGdycElkAzIxMj QxNTgEZ3Jwc3BJZAMxNjAwMDY1NjE4BHNlYwNmdHIEc2xrA21icnMEc3RpbWUDMTE0OTU5OTkxMw --;_ylg=1/SIG=11h4b1m8g/**http%3a/groups.yahoo.com/group/Q-LIST/members> Quickie Builders Association WEB site http://www.quickiebuilders.org <http://us.lrd.yahoo.com/_ylc=X3oDMTJkcnNrNzAxBF9TAzk3MzU5NzE0BGdycElkAzIxMj QxNTgEZ3Jwc3BJZAMxNjAwMDY1NjE4BHNlYwNmdHIEc2xrA2dmcARzdGltZQMxMTQ5NTk5OTEz;_ ylg=1/SIG=10skg51ah/**http%3a/groups.yahoo.com> Yahoo! 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Re: prop size?
MartinErni@...
David,
I have a 2 blade electric constant speed MT. Earnest
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Re: prop size?
Doug Humble <hawkidoug@...>
Hey Jon Finley, nice to hear from you! I sent an email to you off list and it got bounced as I thought it might. Please email me off list at HawkiDoug@cox.net if you would please.
toggle quoted messageShow quoted text
Doug "Hawkeye" Humble www.asignabove.net Omaha NE N25974
----- Original Message -----
From: Jon Finley To: Q-LIST@yahoogroups.com Sent: Tuesday, June 06, 2006 8:09 AM Subject: [Q-LIST] Re: prop size? Hi Ron, Afraid I don't check messages here very often so missed your call for help. Yes, I am in the middle of moving to an airpark (Yippee!!!) near Albuquerque, NM so my site is down. As you have already found, you won't find much help out there for prop setup on the Soob. It can be very frustrating but remember that the fun is typically in the journey and not just the destination. I am running a 55" 3-blade Warp Drive that had the blades profiled for high-rpm use by Gary Hunter - remember, I am direct-drive. Currently, the blades are set at 14 degrees. I do not think this prop is very efficient but that is purely a gut feeling - I have no data to back it up. However; it is very adjustable and that is the reason that I'm using it. Do to my low thrust line, 55" was the maximum that I could get away with. Depending on your reduction, you might be able to use a slightly longer prop. In any case, you will likely be limited to less than 60". With my Soob, an in-flight adjustable prop would be the cat's meow. They are a bit too spendy for my checkbook though. Not terribly helpful... Sorry, wish I had a solid answer for you. Jon Finley > > > > > > > > ----- Original Message ----- > > > > > > > > From: Ron Weiss > > > > > > > > To: Q-LIST@yahoogroups.com > > > > > > > > Sent: Thursday, June 01, 2006 8:39 PM > > > > > > > > Subject: [Q-LIST] prop size? > > > > > > > > > > > > > > > > > > > > > > > > Does anyone have a suggested size prop I should run > on > > a > > > > > Subaru > > > > > > > EJ 22, > > > > > > > > 165hp. at 5500rpm. 2 to 1 reduction. No pure wood > > props > > > > > > > please....Ron
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Re: Spring Fling 06
Tri-Q1 <rryan@...>
Keith, Would you give us a complete description of your Q1's demo
flight ? Ryan --- In Q-LIST@yahoogroups.com, "Keith Welsh" <kfly@...> wrote: experience all they came for and no one left disappointed. And that is always the primary objective. Heck I even gave my best ever Q-1 flight demo. A few commented that they didn't know an Onan Quickie could do all that. In experienced hands it can be demoed impressively. The secret is knowing that gravity can be used as an amassing airspeed builder when needed. Of course with only 20hp it bleeds off quickly when the maneuver begins but starting at 140 mph at full throttle buys allot of time to demonstrate a Quickie.
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Re: prop size?
Leon - C <leon@...>
David;
With the offset thrust line (I assume a belt reduction with the 2/1 ratio rather than planetary) is is possable that whirl mode resonance might also be a problem and contribute to prop flutter even if properly "clocked"? I have seen visable resonance of this type with some ultralight aircraft. ============ Leon http://david.gall.com/files/Airplane/Prop-100.xls.The spreadsheet Leon tried to send you is located here: It is based on NACA Technical Memorandum 212. It should be sufficient to get you "into the ballpark" for your propeller selection. It can recommend pitch and diameter for either a two- or a three-bladed prop. Your reported propeller failures sound like resonance problems. With a 2:1 reduction, the propeller is in lock-step with the vibration of the engine from the power pulses. <<
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Re: prop size?
Jon Finley <jon@...>
Hi Ron,
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Afraid I don't check messages here very often so missed your call for help. Yes, I am in the middle of moving to an airpark (Yippee!!!) near Albuquerque, NM so my site is down. As you have already found, you won't find much help out there for prop setup on the Soob. It can be very frustrating but remember that the fun is typically in the journey and not just the destination. I am running a 55" 3-blade Warp Drive that had the blades profiled for high-rpm use by Gary Hunter - remember, I am direct-drive. Currently, the blades are set at 14 degrees. I do not think this prop is very efficient but that is purely a gut feeling - I have no data to back it up. However; it is very adjustable and that is the reason that I'm using it. Do to my low thrust line, 55" was the maximum that I could get away with. Depending on your reduction, you might be able to use a slightly longer prop. In any case, you will likely be limited to less than 60". With my Soob, an in-flight adjustable prop would be the cat's meow. They are a bit too spendy for my checkbook though. Not terribly helpful... Sorry, wish I had a solid answer for you. Jon Finley
on----- Original Message -----
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Re: prop size?
MartinErni@...
David,
I have always mounted my props as you describe until I got my MT. MT installation instructions specifically state that the prop is to be mounted vertically at TDC. Any idea why they do it differently? Earnest
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