Date   

Re: Fibreglassing ply

Martin Skiby
 

I would flox a couple of nut plates into the foam then install a screw in them with a long shank and put some vaseline on it.  Glass around the screw with your layups.  # layers should do it.  Unscrew them and grind flat. You now have a mounting pad with nut plates. As for the Pitot.  Say with the aluminum if you like, but install some foam behind it and around the tube and form to look like a modern Pitot from a bonanza.  It will povide strength without much weight, but also will provide less drag than the tube itself.



Re: New flight

Martin Skiby
 

We are in Bakersfield CA and actually just moved to MIT in Shafter with a new hanger.  The home of Strega and some really nice airport folks.  You are all invited out whenever you want to come.


Re: New flight

Martin Skiby
 

Will do.  We did some modifications to the gear when we got it as I was not happy with the design on the top.  We added some gussets and it has worked fine thus far.  However when I got it back I notice it has been bent at the nose wheel so someone has landed it hard.  Went on a bit crooked, but we decided to leave for now.  I would like the source for the new gear as well as a source for the Belevue washers for the existing one.


Re: New flight

Martin Skiby
 

Shafter California (MIT)  Yes we built in the 80's as a conventional gear and took third place in the CAFE 400 back then. Converted to TriQ in the early 90's and sold to a fell ow in FL.  Hangar door fell on it in a hurricane.  Found several years later and purchased the wreckage back form a guy in Boston.  5 years later and it is back flying.  Thank you to Rick Hole with Velocity that provided the main wing.  He had the jigs and provided me a super deal on building the wing with the Wadlow layup.  


Re: New flight

Martin Skiby
 

Yes Jay that is correct and sorry for the delayed response.  Been at the airport!!


New file uploaded to Q-LIST

Q-LIST@...
 

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the Q-LIST
group.


File : /Weight and Balance Calculator.xls
Uploaded by : mls6220 <mskiby@...>
Description : TRIQ200 WEIGT AND BALANCE CALCULATOR


You can access this file at the URL:
https://groups.yahoo.com/neo/groups/Q-LIST/files/Weight%20and%20Balance%20Calculator.xls


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


mls6220 <mskiby@...>


Re: Tri-Q finish weight and balance estimate

Martin Skiby
 

Jay,

Nice job on getting close.  I don't know if you remember me but you loaned me your incidence tool for the main wing and I bought your extra nose gear.  Anyway we completed (finally) the project and it flew a few weeks ago.  The CG ended up at 39.6 inches and with all in our weight was 725lbs for the TriQ200.  The CG worked out with my son at 190 to just be at the forward end of the range when he flew it and it went very well.  I will attach a spreadsheet that I did for the TriQ200 that may assist in some calculations.

My son did the standard taxi tests at increasing speeds and after about 4 of them pulled it off and flew like a champ.  Only needed some additional trim on the ailerons so it would quit turning left with him in the seat.

Also the incidence we set seems to be nearly perfect but I wish I would have raised the back of the wing just a bit more for a little less incidence in the main wing.  We are running the reflexer jsut about 1/8 inch up to trim the elevators to perfect.  She is doing passes at 205 indicated with no wheel pants.  I will post some photos also.

Please let me know if I can help in any way to get you in the air.

Martin Skiby


Re: Tri-Q finish weight and balance estimate [1 Attachment]

Jay Scheevel
 

Aha Lynn!

I might have suspected that you would be the one to zero in on my secret X-factor. The weight of the engine is probably the single factor most responsible for my savings on weight. The Jabiru 3300 is quite a bit lighter than the O-200. All up weight for the engine is approx 180 pounds, including all accessories, cooling and exhaust, so I cheated a little bit relative to you and others who have more standard engine installations. Also, my prop and spinner together are less than 8 pounds and I don't have that heavy prop extension (Well, I guess I do still have it, but it is in a box in my basement, not on the airplane).

As far as the paint cg goes, the computation is fairly rigorous numerically, so I doubt any errors there, but the tail has a lot of area, so does contribute significantly more than one might think. The forward face of the main wing is mounted at FS 78.5", so FS 70' would be hanging from the tip of the pilot's nose in level flight. Now that you mention it, though it may be fairly simple for me to break down the weight and CG of the paint on each subset of the airframe then report back.

On second thought, I do not want to cause Jim Masal any more stress than necessary, so I maybe I should just use the time to glue on another piece of hardware ;-)  Tick-tock, right Jim?

Cheers,
Jay


Re: Tri-Q finish weight and balance estimate [1 Attachment]

Lynn French
 

Jay,

None of us should be surprised that you are engineering this bird to the exactness that requires consideration of the uniformity of the paint. I admire your persistence and patience and hope to see this at fly-ins soon.

I don’t know why it seems to me that FS70 is too far back for the CG of the paint. Isn’t that about the center of the rear wing? Total surface area of the shell, top and bottom of wing, canard, etc. would seem greater in front of that point.

If your empty weight projections are true you are to be commended for an extremely light Tri Q. Remind me again of what your engine weight is.

 

Regards,

L. French

 

From: Q-LIST@... [mailto:Q-LIST@...]
Sent: Monday, December 28, 2015 10:24 AM
To: Q-LIST@...
Subject: [Q-LIST] Tri-Q finish weight and balance estimate [1 Attachment]

 



Hi All,

I have been noodling out some final weight and balance estimates for my Tri-Q. The biggest unknown remaining for me is the finish/paint and just where the cg of this is located. I am still a bit up in the air on what will be the total weight of the finish, but I am estimating about 30 pounds for the time being. I built a 3D virtual computer model of the outer skin of my plane (actually only the right half, since both halves are symmetrical), then fitted it with uniformly thick layer of small cubes covering the skin (these cubes are called voxels is the modeling lingo--picture below). This allowed me to compute the cg for a uniformly thick layer of finish. That computation works out to be located at FS 69.7, for what that is worth. I am sure uniform thickness is not a perfect assumption, but at least I have a starting point for adding paint to my overall cg computation. Comments welcome.

Hope you all have a great 2016. I know it will be memorable for me if I get my bird in the air this year.

Jay Scheevel, Tri-Q, still building



Fibreglassing ply

Paul Poulsen
 

Hi Guys,
I hope that you all had a good Christmas and that the new year is full of clear skies and tailwinds.

I am currently incorporating the La Rue brake mod with dual master cylinders. I am intending to mount the master cylinders on the die of the fuselage near the NACA vent with some 1/4 5 ply. I have read the builders instructions but apart from a reference before glassing the foam there is nothing. What my question is. Is the glassing technique the same for ply wood as it is for foam (Presumably this is the case) And do I drill the mount holes for the master cylinders Before I glass the mounts in place or after?
Thanks in advance for your help
PS I checked the Aluminium Pitito head  as it was coated heavily with micro. once I cleaned it down I found that it had not traveled well on the trip over see attached. I think that I may need a new one...Stainless steel this time maybe?



Re: Tri-Q finish weight and balance estimate

Kevin Boddicker
 

THAT is a matter of opinion!!! 



On Dec 28, 2015, at 1:42 PM, 'jcrain2@...' jcrain2@... [Q-LIST] wrote:

 

Nope!  No lead in the tail.  650 lbs is great for a TriQ!  You're the wizard Jay!
Bruce

---------- Original Message ----------
From: "jay@... [Q-LIST]" <Q-LIST@...>
To: <Q-LIST@...>
Subject: Re: [Q-LIST] Tri-Q finish weight and balance estimate
Date: 28 Dec 2015 09:09:04 -0800


 

Thanks Paul,

Good point about the canopy :-) My canopy has two doors and an overhead support beam, so will take some paint in that general vicinity. I intentionally let the rest of the calculation slide since it came out to be that the overall paint cg was quite near the canopy anyway.  I will clip out the glass area in the model and see if it makes a difference (easy to do).  I am being careful about the cg in advance rather than adjusting via battery placement, since I will not be using heavy lead-acid batteries. I will use the Aerovolt Fe-Li batteries which only weigh a few pounds. I would like to keep all that high-current stuff near to or on the firewall, and it looks like I will be able to do that. If not, Bruce knows how to install lead in the tail and I will ask him for advice :-) Got my fingers crossed that I will come in near 650 pounds empty weight and close to where I want to be on empty cg. Looks doable right now.

Cheers,
Jay

 


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Re: Tri-Q finish weight and balance estimate

Bruce Crain
 


Re: Tri-Q finish weight and balance estimate [1 Attachment]

Jay Scheevel
 

Ok Paul,

Corrections made. New paint cg with glass area exculed is FS 70.1" (picture below).

Cheers,
Jay


Re: Tri-Q finish weight and balance estimate [1 Attachment]

Jay Scheevel
 

Thanks Paul,

Good point about the canopy :-) My canopy has two doors and an overhead support beam, so will take some paint in that general vicinity. I intentionally let the rest of the calculation slide since it came out to be that the overall paint cg was quite near the canopy anyway.  I will clip out the glass area in the model and see if it makes a difference (easy to do).  I am being careful about the cg in advance rather than adjusting via battery placement, since I will not be using heavy lead-acid batteries. I will use the Aerovolt Fe-Li batteries which only weigh a few pounds. I would like to keep all that high-current stuff near to or on the firewall, and it looks like I will be able to do that. If not, Bruce knows how to install lead in the tail and I will ask him for advice :-) Got my fingers crossed that I will come in near 650 pounds empty weight and close to where I want to be on empty cg. Looks doable right now.

Cheers,
Jay


Re: Tri-Q finish weight and balance estimate [1 Attachment]

Paul Fisher
 

Very impressive Jay!  I assume you are not planning to put any paint on the canopy, not that you might not get some accidentally!!  I did the final battery install after mine was painted.  That let me fine tune the CG.  I look forward to seeing your plane flying in 2016!!

Good luck!

Paul

On Dec 28, 2015 10:23 AM, "jay@... [Q-LIST]" <Q-LIST@...> wrote:
 

Hi All,

I have been noodling out some final weight and balance estimates for my Tri-Q. The biggest unknown remaining for me is the finish/paint and just where the cg of this is located. I am still a bit up in the air on what will be the total weight of the finish, but I am estimating about 30 pounds for the time being. I built a 3D virtual computer model of the outer skin of my plane (actually only the right half, since both halves are symmetrical), then fitted it with uniformly thick layer of small cubes covering the skin (these cubes are called voxels is the modeling lingo--picture below). This allowed me to compute the cg for a uniformly thick layer of finish. That computation works out to be located at FS 69.7, for what that is worth. I am sure uniform thickness is not a perfect assumption, but at least I have a starting point for adding paint to my overall cg computation. Comments welcome.

Hope you all have a great 2016. I know it will be memorable for me if I get my bird in the air this year.

Jay Scheevel, Tri-Q, still building


Tri-Q finish weight and balance estimate

Jay Scheevel
 

Hi All,

I have been noodling out some final weight and balance estimates for my Tri-Q. The biggest unknown remaining for me is the finish/paint and just where the cg of this is located. I am still a bit up in the air on what will be the total weight of the finish, but I am estimating about 30 pounds for the time being. I built a 3D virtual computer model of the outer skin of my plane (actually only the right half, since both halves are symmetrical), then fitted it with uniformly thick layer of small cubes covering the skin (these cubes are called voxels is the modeling lingo--picture below). This allowed me to compute the cg for a uniformly thick layer of finish. That computation works out to be located at FS 69.7, for what that is worth. I am sure uniform thickness is not a perfect assumption, but at least I have a starting point for adding paint to my overall cg computation. Comments welcome.

Hope you all have a great 2016. I know it will be memorable for me if I get my bird in the air this year.

Jay Scheevel, Tri-Q, still building


Re: Pitot /Static System

Paul Spackman
 

Look for water collected in a low point in the static system.


Re: Pitot /Static System

Bruce Crain
 


Pitot /Static System

Jim Patillo
 

Good evening,

I was flying back to the Bay Area today and noticed my A/S, Altimeter and V/S indicator needles start moving up and down in sync. Didn't seem to change with airspeed or altitude.The modulus stayed the same. What would have caused that?

The plane had ice on it this morning. I looked at the static vents and they were clear.

Regards,
Jim Patillo
N46JP - Q200


Re: nylaflow question [2 Attachments]

John Loram <johnl@...>
 

Do shield the Nylaflow from sun light (UV).

-john-

 

From: Q-LIST@... [mailto:Q-LIST@...]
Sent: Sunday, December 20, 2015 5:09 AM
To: Q-LIST@...
Subject: [Q-LIST] Re: nylaflow question [2 Attachments]

 

 

Hi Guys,

Here is a couple of shots of the Teflon hose trial installation on my Triq200.Looks like it will work quite well with the angled unions, and will keep the Nylaflow away from the worst of the heat. Will fit some temperature strips when ready to test, to check whats happening. Intend to fair the bracket and nylaflow to keep out of feets way as part of finishing.

Richard T
England.
TriQ200. 

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