Date   

Re: Tri-Q finish weight and balance estimate

Martin Skiby
 

Exactly.  My wife won the Copperstate Dash three years in a row and took the Sun 100 in her Vari Eze.  No BS.  We we know a few things about making things go as fast as possible.  :)


Re: Tri-Q finish weight and balance estimate

Sam Hoskins
 

Sure - Just organize one and they will come.  Richard K and I are two Q-listers who have organized races. You can make it three.

I think there is one in Washington state.

On Thu, Dec 31, 2015 at 2:10 PM, mskiby@... [Q-LIST] <Q-LIST@...> wrote:
 

Sam I notice every one of those races are back East.  Texas is the closest.  Any change of holding them in the West Coast some time?



Re: Tri-Q finish weight and balance estimate

Martin Skiby
 

Sam I notice every one of those races are back East.  Texas is the closest.  Any change of holding them in the West Coast some time?


Re: Tri-Q finish weight and balance estimate

Sam Hoskins
 

Speed is best verified in a SARL race. When the flag drops, the B.S. stops.




On Thu, Dec 31, 2015 at 1:54 PM, mskiby@... [Q-LIST] <Q-LIST@...> wrote:
 

it is faster than you will expect.  Will verify soon. :)



Re: Tri-Q finish weight and balance estimate

Martin Skiby
 

it is faster than you will expect.  Will verify soon. :)


Re: Tri-Q finish weight and balance estimate

Martin Skiby
 

Mike, just going by the pilot claim on the pass. We will do some additional testing fur sure however this has always been a quick plane and we did do a few more improvements in the rebuild. Let's hope we are accurate and can prove it. Wouldn't that be great!

Martin


Re: Tri-Q finish weight and balance estimate

Mike Dwyer
 

I call BS on a tri Q going 205.   He didn't put the units in so maybe it's in a dive or maybe he's using kilometers per hour!  Maybe an AS calibration is in need?
Happy new year.
Mike Q200

On Dec 30, 2015 10:55 AM, "mskiby@... [Q-LIST]" <Q-LIST@...> wrote:
 

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

Jay Scheevel
 

Hi Martin,

Yes, I remember you using the tool, and also you may remember that I made a quick stop to see it after you had installed the new wing when I was in Bakersfield for work. You bought me a nice lunch at the diner near the field. Thanks for that.

I have the spreadsheet from your wing/canard measurements and it shows that you are flying at about minus 0.5 degrees decalage, which is just shy of the minus 1 decalage in the original Q-200 (N81QA). The majority of the Tri-Q's have a more negative decalage (meaning any combination of MW trailing edge higher or Canard leading edge higher). That is apparently where you would have preferred based on your comment that you would like to lose the need for reflexor.  I think you are in a nice place for flight if you are seeing airspeeds that high with no wheel pants. The plane looks really fast, so I am sure that helps :-) I hope to be joining you in the air in 2016. Congratulations to you and your son for a job well done.

Cheers,
Jay


Re: Pitot /Static System

Martin Skiby
 

Jim,  Come on down to MIT some time and see us.  

Martin


Re: nylaflow question

Martin Skiby
 

Nice job.

I took my nylaflow all the way to the brake, but installed a sleeve of larger nylaflow in the gear leg so I can easily change the tube at any time.  Has not been changed since 1995 at this point and is doing fine.  I use Fiber Frax and aluminum tape for a heat barrier.  Works great.  Your install looks mush heartier however and a great idea.

Make sure to still use Frax and tape on the gear leg to protect from heat.  Just on the gear next to the brake disc.  I have seen a Long Eze gear fail in taxi from super heating the gear leg on a long taxi.  Not pretty.


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?


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