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RE: The New F86D Dog Sabre - 7/2/2012 11:02 PM   
Mike06659



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From: Mercersburg, PA, USA
Status: offline 		If anyone is interest I have gear for sale.
Thanks,
Mike

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RE: The New F86D Dog Sabre - 7/3/2012 2:53 AM   
flymanjg


 

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From: Pembroke Pines, FL, USA
Status: offline 		Just flew mine the other day, flew great. 12 oz of epoxyed bb's in the nose and a Rabbt 100 in the rear end. Had to tune it down to 16 lbs. Here are some pics.

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RE: The New F86D Dog Sabre - 7/3/2012 3:26 AM   
essyou35


 

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Status: offline 		why on earth would you tune it down!!!!

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RE: The New F86D Dog Sabre - 7/3/2012 3:38 AM   
jetbro


 

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From: , MI, USA
Status: offline 		 This has me puzzled, why do the engine mount rails angle result in the thrust center-line so low at the aft fuse?
checking with plywood plate and cf rod
if I align the pipe to the turbine as it is , there will be a 2" gap above the pipe at the tail and will have to scallop 10" or 12" along the bottom of the fuse..

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RE: The New F86D Dog Sabre - 7/3/2012 3:49 AM   
essyou35


 

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Status: offline 		not sure, but it works. Mess with the thrust angle and you will need trim.

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RE: The New F86D Dog Sabre - 7/3/2012 6:23 AM   
Jonboy2


 

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Status: offline 		I am selling my NIB Dog Sabre if anybody is interested. It does come with the retracts. $575 shipped via Greyhound. Pm or email me if interested. Thanks Jon

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RE: The New F86D Dog Sabre - 7/3/2012 6:25 AM   
InboundLZ



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quote:

This has me puzzled, why do the engine mount rails angle result in the thrust center-line so low at the aft fuse?
checking with plywood plate and cf rod
if I align the pipe to the turbine as it is , there will be a 2" gap above the pipe at the tail and will have to scallop 10" or 12" along the bottom of the fuse..



I have their MB339 and my thrust angle was so bad I had to rip eveything out and start over. As matter of fact, the mounting rails were not parallel to eachother and the poorly glued in place. I was able to remove them in about 4 seconds. I have rebuilt this area and I would bet money you would have to destroy the fuse to egt them out now. I used a laser to align everything and get the thrust angle correct.

All I know is I will never buy a MB kit again, too much work to get them up to my standards....

Good luck with yours....

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evoJet Factory Pilot
Smart-Fly

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RE: The New F86D Dog Sabre - 7/3/2012 6:59 AM   
essyou35


 

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Status: offline 		I love the dog but man it had me cussin putting it together!

9 flights on it seems to be holding up, but it does not seem to be very popular for some reason. I wonder why.

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RE: The New F86D Dog Sabre - 7/3/2012 10:32 AM   
kimhey


 

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From: T�nsberg, NORWAY
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quote:

ORIGINAL: jetbro

 This has me puzzled, why do the engine mount rails angle result in the thrust center-line so low at the aft fuse?
checking with plywood plate and cf rod
if I align the pipe to the turbine as it is , there will be a 2'' gap above the pipe at the tail and will have to scallop 10'' or 12'' along the bottom of the fuse..



Sorry to say, but you need to have a sharp eye when "building" the Dog. As you obviously have that knowledge, no need to worry My Dog required lots of modification to be finished like I wanted. That

ment ripping some formers out and glue them back strait, or rebuilding turbine mounts and nose wheel mounts/formers...

But when you have delt with all the issues, this model is a blast to fly and operate, just don't take short cuts during assembly


I personally love my F86d



Kim

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RE: The New F86D Dog Sabre - 7/3/2012 6:07 PM   
essyou35


 

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Status: offline 		Kim how does the speed of your dog compare to your other jets? I've heard (never seen) the tornado is faster. I did see several falcon 120s flyh and they were slower than my dog.

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RE: The New F86D Dog Sabre - 7/4/2012 9:41 AM   
kimhey


 

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quote:

ORIGINAL: essyou35

Kim how does the speed of your dog compare to your other jets? I've heard (never seen) the tornado is faster. I did see several falcon 120s flyh and they were slower than my dog.


My dog has the drop tanks installed, which isn´t helping increasing the topspeed To be honest I would have to admit that the Dog is not very fast, but I will say it is fast enough to get the smile on my face! Lots of people ask "how fast is it?" My answer is mostly "too fast". Personally I am more interested in how well models fly, than how fast they go.

But to answer you Q based on the models I now own:

Elan/P80se is marginally faster than/same as the F86d
C-arf Mig-15/P80se is -//-
Habu32/P20sx is a tad faster
C-arf Eurosport/Behotec 180 Gold, never tried topspeed and never will

A had a Boomerang Sprint (sold it)/P80se, and I would say that model is comparable to my Dog regarding topspeed.

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RE: The New F86D Dog Sabre - 7/5/2012 12:43 AM   
jetbro


 

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From: , MI, USA
Status: offline 		 Guess what? If you go by the center of the circle cutout in the former between the turbine and the tanks...the datum is on the topside of the mounts(opposite teh hatch)
everything lines up nice this way without changing vertical engine thrust angle
no wonder so many pipes were low on other pics...

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RE: The New F86D Dog Sabre - 7/5/2012 12:59 AM   
essyou35


 

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Status: offline 		Looks like you are doing some great work there. I looked into doing what you did but being my first turbine I opted to use the status quo. I over analyzed mine and in the end it all works out of the box.

These dogs have small reynolds numbers so it is not going to matter if it is exactly on the datum or not, a few mm wont count. The only thing that will is the thrust angle and I got mine right on thank god. Get that wrong, which you can do with the dog,, and you'll have a trim issue that is speed dependent.


Make sure you plan carefully how you will get the wings off and on so you can ensure that will not become a huge chore. I use just steel flange bolts and a socket wrench.

Looking forward to another dog flyer!

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RE: The New F86D Dog Sabre - 7/5/2012 1:19 AM   
jetbro


 

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From: , MI, USA
Status: offline 		 I'm just happy I can mount the turbine and pipe without rebuilding the woodwork or butchering the tail of the dog...
I plan on using a single shc screw for each wing at this time ... and quick-connects on the air lines , molex connector for the two servos..
should make for fast and error free connections..
ps.. i just lay the turbine on the mount, i will have the glow plug between 10 and2 on final install.

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RE: The New F86D Dog Sabre - 7/5/2012 7:57 PM   
essyou35


 

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Status: offline 		shc shc screw?

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RE: The New F86D Dog Sabre - 7/5/2012 8:20 PM   
Meesh



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From: Dracut, MA, USA
Status: offline 		SHC = Socket Head Capscrew In other words an Allen Head screw

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RE: The New F86D Dog Sabre - 7/6/2012 4:53 AM   
essyou35


 

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Status: offline 		My tanks as I feared, ar leaking again. They are leaking even more during refueling, then leak some while sitting. I had to fix some leaks but it seems like the tanks cannot stand any type of expansion, anyone else have tank issues?

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RE: The New F86D Dog Sabre - 7/6/2012 11:36 AM   
Modellbau USA



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From: Ft. Lauderdale, FL, USA
Status: offline 		 I apologies if you are having tanks issues. Please contact Derrick Martin at (337) 693-3090 he makes all of our tanks and they are warrentied for the life of the tank. 


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RE: The New F86D Dog Sabre - 7/6/2012 2:20 PM   
essyou35


 

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Status: offline 		Thanks henry I will do that. The tanks start "sweating" fuel, so I get a nice puddle below them if I let them sit full.

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RE: The New F86D Dog Sabre - 7/8/2012 3:43 PM   
kimhey


 

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From: T�nsberg, NORWAY
Status: offline 		I have measured the tank volume now, and they are 1 liter each, so we have 2 liter of fuel onboard. How much each of us have of useable fuel, is depending on how we do the plumbing

I guess I have 1,7liter, which on full throttle gives me 8 minutes flight time with my Jet-Munt (Merlin) VT80. I do not fly WOT all the time of course, so with the timer set on 7 minutes, I think I have 2-3 minutes of reserve.

Here is my F86d from yesterday`s flying.


Kim








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RE: The New F86D Dog Sabre - 7/12/2012 3:39 PM   
essyou35


 

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Status: offline 		Is anyone flying without a gyro? I am wondering if it is doing anything at all. I still get dutch roll even during fast flight. I thoguht about disconnecting it for a flight but thought I would ask if that would be a bad idea..

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RE: The New F86D Dog Sabre - 7/12/2012 4:36 PM   
Bob_B



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quote:

ORIGINAL: essyou35

Is anyone flying without a gyro? I am wondering if it is doing anything at all. I still get dutch roll even during fast flight. I thoguht about disconnecting it for a flight but thought I would ask if that would be a bad idea..



Since you are required by the AMA to have a rudder on a turbine jet that would be a bad Idea.
You did read the AMA Turbine Waiver document and understand the requirements, right?

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RE: The New F86D Dog Sabre - 7/12/2012 5:02 PM   
Flilek


 

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From: Dudelange, LUXEMBOURG
Status: offline 		Hello,

Rudder is required, but no gyro.

I think, your gyro has to much gain. That gives an effect comparable to dutch roll at high speed. My gyro is relatively well set up. No movement, beside small shaking in tight turns. If you want good reaction of the gyro, you need a very fast servo on the rudder. (Ask heli pilots)

Flilek

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RE: The New F86D Dog Sabre - 7/12/2012 6:43 PM   
essyou35


 

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Status: offline 		Robert, I am so sorry your opinion of me is not very high. Unhooking the rudder would be stupid as hell. I would have to tape it to hold it in place and pray it holds. If the tape gives, I risk getting flutter and destroying the vert stabalizer. I realize you misunderstood me but to imply that is what I was going to do is a really big stretch and shows you have some sort of personal issue with me.

Attached is a copy of my DD214. Please have a look at the training I have. I am no stranger to jets or jet engines. I certainly dont know everything, I am not and expert, my training is not at the PHd level, and I dont work for NASA but I surely know how these things fly and this evident in my sucess I have had in building the dog and my 16 flights. I was one of the best Jet Mechs the AF has ever had. I understand the math behind jet engines, the principles, and I was called for troubleshooting help long after my discharge date.


I have no idea what I've done to not have your respect but I assure you that I do deserve it.

Joey

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RE: The New F86D Dog Sabre - 7/12/2012 7:13 PM   
Bob_B



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Status: offline 		Sorry, I misread your post. I do apologize.
Great to know you have prior credentials and were able to post those.
Good luck with your Sabre.

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