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AMT in a Skymaster F-15?

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AMT in a Skymaster F-15?

Old 07-30-2013, 12:56 AM
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Justflying1
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Default AMT in a Skymaster F-15?

Hello everone,
Just wondering if anyone has fitted a Pegasus to the skymaster F-15.
Now before everone starts to go off on how power full this engine is on this airframe just stop and read first.
Yes this engine would be an overkill and NO its not so you can fly it flat out and rip the wings off it.
This would be purely for does vertical take offs

I would like to know if you did install one did you have issues with heat.
Difficulty in installing the engine.
Any modifications for fitment.
Was the pipe modified.

Your help would be much appreciated.

Ivan

Old 07-30-2013, 12:58 AM
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Justflying1
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Default RE: AMT in a Skymaster F-15?

If not a Pegasus anyone fitted an engine of similar thrust. 40 pounds.
Old 07-30-2013, 08:26 AM
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Default RE: AMT in a Skymaster F-15?

If not a Pegasus anyone fitted an engine of similar thrust. 40 pounds.
Your installed thrust with a Pegasus is going to be much closer to 30 than 40 pounds.
Old 07-30-2013, 08:38 AM
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Default RE: AMT in a Skymaster F-15?

I installed one in a JHH F15 many years ago. Similar size as SMF15, it's a tight squeeze with roughly 1/4" of clearance between top and bottom of fuse in engine compartment.

I used a combination of BVM heat shield, aluminum tape and ceramic blanket to mitigate heat. Fuse got warm but not excessive.

Versatile airplane capable of a wide range of motors.

Good luck
Old 07-30-2013, 12:53 PM
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Justflying1
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Default RE: AMT in a Skymaster F-15?

I will give it a go then. I thought that heat would be an issue but it can't be any worse than my Mig -29 with twin 140. Not that that was a big problem as after some heat protection it was all sorted. I must admit with the F-15 airlines running rite underneath the engine that was a little concern to me. I guess the heat blanket will come in handy


To Garry,
i was more talking 40 pounds as the size of engine going in. I guess the AMT is a little larger in size than other turbines of the same size but that is I guess the down side when you want a Rolls Royce. I also don't think you will loose 8-10 pounds out of a bifurcated pipe. I have a friend with an Avonds F-15 with a Pegasus and I don't think he can do the roll take off with an immediate vertical if the engine is only putting out 30 pounds out the end of the pipe.
Old 07-30-2013, 01:02 PM
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Default RE: AMT in a Skymaster F-15?

i had a jet legend f15 (small one) with a wren 160 in it it was fine needed more fuel on board though
Old 07-30-2013, 01:04 PM
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Default RE: AMT in a Skymaster F-15?

I was referring to the fact that a Pegasus only puts out 35# if it is a AMT NL Pegasus HP. If it is a normal Pegasus it is closer to 30#. That's not figuring in any thrust losses from a bifurcated pipe. The Avonds F-15 is probably lighter than the Skymaster F-15.

Not trying to discourage. Pegasus power should be plenty for that F-15. My YA F-15 weighs 25# dry and flies real well on a Jetcat Titan.

Have fun!

Old 07-30-2013, 01:21 PM
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Default RE: AMT in a Skymaster F-15?

Neglected to mention that whatever model Pegasus you have...will be putting out more thrust than my Titan []
Old 07-30-2013, 02:07 PM
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Justflying1
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Default RE: AMT in a Skymaster F-15?

Thanks for the info Gary.
Old 07-31-2013, 09:41 AM
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Default RE: AMT in a Skymaster F-15?

Add an external centerline drop tank with at least 20 oz of fuel and you'll be in good shape for fuel capacity / flight time.

By the time you start, taxi, and turn downwind you will be flying on your main internal tanks. Should have roughly 7:30 flight time with the custom jet tech tanks.

Enjoy, great airplane.
Old 07-31-2013, 10:51 AM
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Default RE: AMT in a Skymaster F-15?


ORIGINAL: yeahbaby

I installed one in a JHH F15 many years ago. Similar size as SMF15, it's a tight squeeze with roughly 1/4'' of clearance between top and bottom of fuse in engine compartment.

I used a combination of BVM heat shield, aluminum tape and ceramic blanket to mitigate heat. Fuse got warm but not excessive.

Versatile airplane capable of a wide range of motors.

Good luck

Dude,

Yours got hot cuz your pipes were sticking out the back by about 4" I totally remember seeing it fly that day. You had some Marine General at the field and he just kept saying, "Outstanding." I remember hearing your gear doors closing over the sound of the engine, too!

Git 'er done!
Old 07-31-2013, 11:09 AM
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yeahbaby
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Default RE: AMT in a Skymaster F-15?

Hahaa yup "Shadow" was there...fn great Marine

I need to get another Eagle!!!! Shoulda bought one of your birds when I had the chance.
Old 07-31-2013, 12:57 PM
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Justflying1
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Default RE: AMT in a Skymaster F-15?

Thank for the info. Is this a drop tank you bought or did you make it yourself?
Old 07-31-2013, 01:49 PM
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Randy M.
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Default RE: AMT in a Skymaster F-15?

I have an avonds 15 with amt280 air start. Tam pipe and jet tech tanks. Maybe 6 min flight times with a little room.
Old 07-31-2013, 03:17 PM
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yeahbaby
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Default RE: AMT in a Skymaster F-15?

It was a Yellow A/C drop tank and a homemade centerline pylon. very easy to accomplish.



ORIGINAL: Justflying1

Thank for the info. Is this a drop tank you bought or did you make it yourself?
Old 07-31-2013, 06:38 PM
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Justflying1
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Default RE: AMT in a Skymaster F-15?

Thank you



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