warbird51

My Feedback: (12)

I'm looking on building a JMP Phantom for a turbine. Since this model was origionally built for 2 Turbax fans and .45's, I was thinking that if the weight was carefully watched, you could use 1 Jet cat P80. I do not need the fastest one out there. Just a good flying model.

Any feedback would be welcome.

Wayne

LGM Graphix

My Feedback: (22)

You sure you're talking about the JMP phantom? It was designed for 2 Dynamax fans with 91's (or 77's, not sure what size at the time) it's a pretty big jet. Are you maybe thinking of the George Miller phantom? I thinik it was smaller.

John Redman

My Feedback: (8)

Hey Jeremy, actually Wayne is correct. It was designed around the Turbax 1's with .45's, but I never heard of one working that way. They seemed to work with teh Dynamax fans and .65's and up.

I would think a P-80 would be marginal at best. I am guessing it would end up being a 25 pound bird dry in the slimest of versions. I would look for more power.

grbaker

My Feedback: (29)

I believe Tom actually started competing in Scale competitions with the twin Turbax/.45 Phantom, but if I remember right, he told me that the weight was somewhere around 14 to 16 pounds on that plane. I built several of the Miller F-4s and none of mine weighed less that 14.5 lbs with a single Dynamax/OS.91. I don't know how he got his Phantom that light.

I have a JMP Phantom kit that I will build for turbine power, one of these days. My plan is to build light and power it with a P120 sized turbine. I will also limit the speed on the airframe to less than 140 MPH.

LGM Graphix

My Feedback: (22)

Odd, I could have sworn Tom told me he designed it around the dynamax, but either way, it's a big jet, (I think it's a little bigger than the BVM isn't it?) I would do a 120 for sure in it.

Ron Stahl

My Feedback: (12)

I have one of the second 50 that Tom made; it came with dynamax's and OS 77's. I saw it first at Toledo late seventies, early eighties with turbax fans and K&B 6.5's I decieded that I had to have one right then and there. I still have it and it is a bit larger than my
BVM F-4. I too am thinking about a P-120 for power and limiting the top speed as to not rip it apart. The big issue is the gear has no shock system in it and it is not easy to change once built. I got a set of impact struts for mine while they were around and have yet to finish the plane sow mine will be turbine from start to finish. Now all I have to do is get time to build my projects.

DEVILDOG

My Feedback: (12)

I have converted one to turbine. It was a simple task. I used a BVM pipe and had absolutely no heat on the tail surfaces of fuse.

A p-120 would be ideal. But a p-80 would fly it just fine. It comes out actually lighter than putting two fans and engines in. Of course with fuel that's another story.

Gary mueller Made the tanks for me. My landing gear were about 700 or so but were very nice.

these were built by RC specialties or something like that.
It's the guy that builds Larry Wolfs landing gear for some of his kits. EXCELLENT WORK!!!!

here are some pics

The stabs were in primer due to a very wet start. Just wrinkled the paint underneath is all.

Also this was sold to a guy in Cali. I heard from friends that it was lost on take off.
Notice that I never cut the canopy frame out. I built the cockpit like a ship in a bottle.
YES PAIN IN THE *****

warbird51

My Feedback: (12)

That's what I was thinking about the weight. I think if you really watch the weight you can come up with a nice flying jet. Thanks for all the advice and info. A top speed of 140 - 150 would be just fine with me.

Wayne

peter1b1

Anyone finished a turbine JMP Phantom yet? What turbine have you used. I have one about 60% complete and have decided to go to either a single turbine or 2 small wren turbine...dont know if there is any benefit for the twin turbines but a lot of cost.

What areas of the airframe have to be modified and anyone with photos would be appreciated.

I have the original JMP retracts, can you get brakes for these ?(a must in Australia) or what would you recommend.

Thanks for your assistance.

rccrafters

The scale landing gears were from Rccrafters.
Ed

Johnny Isaiah Woods

My Feedback: (81)

Peter,
I have finished the JMP F4 but have not flown it yet. I have a
Simjet 3000 in it with Tam's pipe. I used the original gear
and installed Trim wheels and brake with the 1/4 axel. You
have to grind some material off for the proper fit. The tanks
are Gary Muller (2 - 44 oz) plus 2 twelve oz sullivan (one as
a header tank). I have 40 oz of smoke using 4 -10 oz tanks.
The plane is about 27 lbs dry.
I will try to attach a picture. You can email me and I will
send them to you.

Johnny
email: [email protected]

Johnny Isaiah Woods

My Feedback: (81)

The first picture is a mistake, it is a Yellow F16 with
a Ram 500.


Johnny

Aero65

My Feedback: (2)

Here is Bills JMP F-4

Converted from a DF bird. It has twin Artes Super Bee engines. Great performance for a big airplane Bill did a great job and the dry weight came out to 27 lbs! The F-4 is very maneuverable and will fly very slow and is able to make some great high speed passes. I will ask if we can get the video posted later.

Congrats Bill!

peter1b1

They are fantastic looking F 4s, Johnny hope the maiden flight goes well, love to see some pics.

Aero65 any chance of some inside photos of the twin installation?? any problems (space etc) what about fuel tanks? In West Australia most jets are using medical "bags" for fuel tanks, what is Bill using?


Thanks for the feed back.

I will have to take some photos of my project this week end.

Peter