Re: Q2/200 Engine mounts
Yes, exactly! The inconsistencies are difficult to navigate!
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Re: Q2/200 Engine mounts
Michael Dunning
I also did a measurement of the difference between the thrust line of the Revmaster and the O200. They are not the same. Will see if I can find that also. I just posted it a couple of days ago: Revmaster and O-200 Thrust Lines. Still an open question on the inclusive vs. exclusive of fuselage thickness until I get out to the hangar, though. The Q-200 firewall Appendix sheet seems to include the fuselage thickness while the Q2 plans say to place the Q2 firewall template inside the fuselage shells; both firewall templates have the same OML dimensions... -- -MD #2827 (still thinking about planning on visualizing how to finish building)
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Re: Q2/200 Engine mounts
I computed the vertical position of my empty CG when I was doing my weigh and balance by changing the angle of the fuselage from zero and recording the difference in scales and FS’s, then computed the vertical CG from those. I will see if I can dig that up. I also did a measurement of the difference between the thrust line of the Revmaster and the O200. They are not the same. Will see if I can find that also.
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Cheers, Jay
On Feb 9, 2022, at 9:03 PM, Ian Ashdown <ian.ashdown@...> wrote:
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Re: Q2/200 Engine mounts
I don’t believe the design O-200 thrust line is WL 15” but the only dimensional reference I’ve found states that it is 7.6” (I think) from the top of the firewall. Don’t you love the use of consistent datum’s! My question is, is that the firewall panel (inside of the Fuse) or the outside of the fuse at the FS 14” (firewall)?
Very confusing/frustrating! Ian SoCal
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Re: Q2/200 Engine mounts
Michael Dunning
Thanks for the info, Jay. Nice to have additional data points.
Ian, I have a thread over on the Q-Performance list talking about some possible alternative engines. I have the same question, since oddly enough the Aeromomentum engines want to be an extra 1.5 inches down from the O-200 location in order to maintain the stock over-the-nose sightlines. I have not seen a vertical C.G. documented anywhere in the plans. However, the Q-200 plans specifically mention placing the thrust line on W.L. 15, which does not correspond to any other jigging or mold lines... I can only infer that W.L. 15 may in fact be the as-designed vertical CG, but we will likely never know. -- -MD #2827 (still thinking about planning on visualizing how to finish building)
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Re: Q2/200 Engine mounts
My feeling is that the vertical CG and by association the center of thrust are not critical in affecting the handling or stability. I say this because the Tri-Q adds a good 50 pounds well below the aircraft center and still handles much like the tail dragger. Also, from my experience, best to keep the flying CG closer to the front of the envelope than the rear. My 2 cents.
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Cheers, Jay Scheevel, Tri-Q2 N8WQ, 201 hours
On Feb 9, 2022, at 7:28 PM, Ian Ashdown <ian.ashdown@...> wrote:
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Re: Q2/200 Engine mounts
I bought that download too. I’m sure it’ll be useful at some point. What is slightly aggravating is that the parts were obviously modeled in SolidWorks, so why not offer a SolidWorks or .stp download. I’d have paid a little more for that, but now I just have to model the parts all over again . . . in SolidWorks!
In the end I think the design of engine mounts are going to be driven by the type of AV Mount I select ( does anyone have any recommendations) and the spacing off the firewall, driven by the balance of the lighter engine. I’m still not sure if the effect of moving CofG a few points rearward would be a positive or a negative. I think negative as pilot, passenger and ‘luggage’ are all aft of the CofG, it may limit the max load capacity. Then there is the question of the ‘thrust line’. I think I’d like to raise it (from the O-200 WL position) for better packaging, but I’m not certain yet. Would raising the thrust line 1”- 1.6” create handling issues? I don’t know what the aircraft vertical CofG height is, maybe it’s in some of the documentation . . . Lots to figure out! Ian SoCal
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Re: Q2/200 Engine mounts
I think the drawing that I sent you the link for should be sufficient to create a Cad model for fabrication. They are not complex or high tolerance parts.
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Cheers, Jay
On Feb 9, 2022, at 6:58 PM, Michael Dunning <dunningme@...> wrote:
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Re: Q2/200 Engine mounts
Michael Dunning
I checked the copy of the metal parts files I bought last week and can confirm the engine mounts are NOT contained in any of the drawings. Bummer.
-- -MD #2827 (still thinking about planning on visualizing how to finish building)
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Re: New Member Introduction
Robert Cringely
VNE in my Q1 is Mach 0.3. My Xavion screen can display it.
On Tue, Feb 8, 2022 at 7:26 PM Mike Dwyer <q200pilot@...> wrote:
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Re: First flight 2022
Kevin,
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I forgot to tell you Jon F flew in on his way to Phoenix area yesterday. We had a nice lunch an could not help discussing how nice the weather is in the area. Charlie
On Tuesday, February 8, 2022, 6:19 PM, Kevin Boddicker <trumanst@...> wrote:
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Re: First flight 2022
Kevin,
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It was good you could get your first flight in. I would have to go get my logbook to tell you how many flights I have gotten in 2022. We got some snow on the mountain peaks but it melted off pretty quick. It has been in the 50’s with the last storm pushing down but it is expected to be 70 by Friday. Dave and I are planning on going to Copperstate fly-in. We will be doing airport camping at Buckeye 73-45 temps. I have planned my route to 2022 FOD. Now to get the final details cleaned up and test fly. I have to wait until the white stuff goes away from Ogden before I can continue working on the Dragonfly. Stay warm up there,
On Tuesday, February 8, 2022, 6:19 PM, Kevin Boddicker <trumanst@...> wrote:
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Re: First flight 2022
Paul Fisher
Congratulations Kevin. Now get that tri-Q back in the air!! Paul
On Tue, Feb 8, 2022, 19:19 Kevin Boddicker <trumanst@...> wrote: WEEEELLLLL I made my first flight of the year this afternoon.
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Re: New Member Introduction
Mike Dwyer
This is the Q-list. Realize your sending this to 500 people who are here and are interested in Q aircraft. It's ok for an introduction but please stick to Q's. I didn't subscribe to the mach meter list. Mike Dwyer Q200
On Tue, Feb 8, 2022, 7:11 PM <smeshno1@...> wrote:
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First flight 2022
Kevin Boddicker
WEEEELLLLL I made my first flight of the year this afternoon.
Even it was a BFR in a C172, I got in the air. Was also out of biannual, so two birds one stone. I had'nt flown since mid Oct. Rust was removed quickly. I didn’t even think about flying with my left hand till I was on the way home. Old dog, same tricks. Press forward boldly!!! Kevin Boddicker TriQ 200 N7868B 570 hrs Luana, IA.
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Re: New Member Introduction
Well..of course the mach warning has to be tested. The 50 will also. :-)
One of the options on the forward cabin closet display was a mach indicator.
Some funny stories come from being in the delivery side of Biz Jets. I once had an acceptance flight on a Falcon 10 and the buyer was complaining he could stand up in it... and my response was he couldn't normally stand up in his Rolls Royce either. He accepted
the delivery!
I left the company in 1981 to return to my birth city of Wichita. Had an offer to work on a then secret program at Raytheon Beechcraft. It ended up being something called the Starship 1... and I was on the R&D crew that built the first three mockups and the
first three flight test aircraft. I flew NC2 on a rotation crew mostly over MCI. That is where I met Rutan and the crew also working on Voyager. Went to Boeing Wichita in 1985 when it was obvious the Starship was going to be a loosing program.
From: main@Q-List.groups.io <main@Q-List.groups.io> on behalf of Robert Cringely <bob@...>
Sent: Tuesday, February 8, 2022 5:44 PM To: main@q-list.groups.io <main@q-list.groups.io> Subject: Re: [Q-List] New Member Introduction I think that was Arkansas Aeromotive, which was owned by BaE. My parents lived in Arkansas and saw me more often when I lived in the UK than later when I moved to California.
My company is looking for one or more Falcon 10s right now. Neil and I used to fly those, too. Twice, while deadheading back from Paris, we took it supersonic over the Channel. You couldn't do that in a Hawker pointed straight at the ground.
On Mon, Feb 7, 2022 at 3:33 PM <smeshno1@...> wrote:
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Re: New Member Introduction
Robert Cringely
I think that was Arkansas Aeromotive, which was owned by BaE. My parents lived in Arkansas and saw me more often when I lived in the UK than later when I moved to California. My company is looking for one or more Falcon 10s right now. Neil and I used to fly those, too. Twice, while deadheading back from Paris, we took it supersonic over the Channel. You couldn't do that in a Hawker pointed straight at the ground.
On Mon, Feb 7, 2022 at 3:33 PM <smeshno1@...> wrote:
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Re: Q2/200 Engine mounts
That is great to know that it's been done before! Good to know there is at least one other person who thinks this might be a good idea . . .
I would love to make contact with him, I'm sure he could save me chasing all kinds of wrong-headed ideas! If anyone can but a name to this chap I'd definitely like to make contact. Ian
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Re: Q2/200 Engine mounts
Chris Walterson
Ian------------ I am pretty sure there is a fellow in Sweden, or some Nordic country that has already installed a 912 in a Q2. He may be a wealth of info. Can't remember his name , but he was there when we did the video about my airplane.
Easier to follow a path then break trail. Take care------------- Chris -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
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Re: Documentation prior to giving a ride
Paul Fisher
"I do not recall Senator."
On Tue, Feb 8, 2022, 08:27 Jerry Marstall <jerrylm1986@...> wrote:
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