RE: Skymaster Mig29 with P200
 

Ian,

I can't wait to see a vid of the Mig fly...it should really haul the mail with a 200 in it!

Beave :D

RE: Skymaster Mig29 with P200
 

Yeah, this thing should haul the mail. I htink the high temp stuff is a bit overkill since it will be behind the ceramic so I don't think the temps will get there, but we will see :D

I am starting to work on the equipment layout and have run into a little snag. Because the 200's starter pokes into the front section it has now occupied the space for the small forward fuel tank. So currently I am looking for an alternate place for the tank or possibly omitting it all together.

RE: Skymaster Mig29 with P200
 

Ian, I really want to keep the forward tank. Perhaps a lower profile tank will work? Can the forward tank be pushed more forward? Here's an example, albeit with a smaller turbine.

http://images.rcuniverse.com/forum/u...51/Ys50511.jpg

RE: Skymaster Mig29 with P200
 

I do not know the exact layout, sized ETC but if you want to keep the tank, why not just pop a hole in the tank large enough for the starter to poke into and then glass in a sealed tube to reseal the tank but still allows the starter to be inside the sealed tube protruding into the tank?

On my Lightning, Comp-ARF has the wing tube going right through the middle of the fuel tanks.

Just a thought...

Beave

RE: Skymaster Mig29 with P200
 

here is somebody with an 180 engine - just for comparing the flight performance.
<div><font size="2" face="Arial"><a href="http://www.youtube.com/watch?v=1LcShEH0H90">
http://www.youtube.com/watch?v=1LcShEH0H90</a></font></div>

Mav

RE: Skymaster Mig29 with P200
 

Thats a lot of work Beave, not sure I want to go that route.

Dantely, moving the tank forward doesn't seem to work due to the nose gear. When it retracts it pokes through and that tank is designed to go up into the little "hump" behind the hatch. With the starter probe obstructing that it moves the tank forward but once you clear the wheels then you start obstructing the steering servo.

If you lost the tank I dont think it would be the end of the world, its only about 30 oz at best. I will keep trying to find a place to squeeze it in somewhere.

RE: Skymaster Mig29 with P200
 

Do you know the capacity of the other tanks? Perhaps Levi has advice on getting the small tank to fit.

RE: Skymaster Mig29 with P200
 

The other tanks are frickin huge!!! They take up half of the intakes!! They have to be somewhere in the 75-90 oz. range.

I will try and fill them and measure tonight.

RE: Skymaster Mig29 with P200
 

Hey Dantley. I just kept sliding the front tank forward until the turbine would fit. There should still be plenty of room for the front gear to retract. I'll take some photos tomorrow and post them.
Kind Regards
Levi

RE: Skymaster Mig29 with P200
 

Ok, I measured the tanks and came out with this:

Small Tank: 24oz.
Large Tanks: 76oz. each

Total: 76+76+24= 176oz.

Without the small tank you have 152 oz. At full power the P-200 draws 24oz. per minute. With just the 2 main tanks you would have 6.3 minutes of flight time with a full UAT left. Add just another minute of flight time if you keep the small tank. Now you wont be flying at full power the whole time obviously so lets say you are averaging 18 oz. per minute, then you have 8.44 minutes of flight time on just the 2 main tanks.

Based on this I would go with just the 2 main tanks, I don't see the need for the third tank plus the fact that all that weight is forward of the CG and will be draining off so the CG will shift in flight. Up to you though Dantley.

RE: Skymaster Mig29 with P200
 

I'd like to keep the small tank if you can make it fit.

RE: Skymaster Mig29 with P200
 

Ok, I have an idea that I am looking into.

RE: Skymaster Mig29 with P200
 

Cool. 152oz is kinda low for a P-200 as I think it uses more fuel than advertised.

RE: Skymaster Mig29 with P200
 

...how about making and using the external fuel Mig tank!?

RE: Skymaster Mig29 with P200
 

Here is a few pics of my install.

RE: Skymaster Mig29 with P200
 

Couple more. Not much room but it works.

RE: Skymaster Mig29 with P200
 

Thanks Levi, that's where I am currently attempting the install. Man they left no room for anything in this plane.

RE: Skymaster Mig29 with P200
 

Ok, time for a quick update. I have been focusing on doing the equipment install lately. I am waiting on some shrink wrap currently but have gotten some things done. I drew up some mounts for the ECU and UAT in Vectric and cut them out on the CNC machine with a new roughing bit I got from McMaster. Man it cuts that G10 great!! I also drew up a fuel pump mount and glued it together and seems to fit just perfect.

The ECU mount is just a plate of G10 that has been shrunk wrapped to the ECU using some battery shrink wrap and it holds it solid. This will be bolted to one of the floors I put in the nose section. The UAT will be mounted the same way but with a little different way of securing it to the board and I will go into detail more on that when I am ready to mount it.

I also got the small fuel tank mounted with some industrial velcro which should hold it solid even when full. I had to add a little "floor" to hold it though, just epoxied some ply to the top of the turtldeck above the nose wheel when retracted.

RE: Skymaster Mig29 with P200
 

would you mind sending some picks on the tailcone side of the turbine? Is that a former right over the cone? Man that thing looks tight.

Andy

RE: Skymaster Mig29 with P200
 

Yeah, that's a former Andy, but a bad angle. There is enough room there to fit on a FOD guard if you can believe that.

RE: Skymaster Mig29 with P200
 

I'm talking about the opposite end. Yeah, the front is tight too. I've seen airflow problems with the FEJ version of this jet. Does Skymaster do anything different?

RE: Skymaster Mig29 with P200
 

The opposite end is actually pretty good. There is a good half inch between the tail cone and the former. Let me see if I can dig up a photo, I might have one.

Here you go, is that what you are looking for?

RE: Skymaster Mig29 with P200
 

More done, I got the shrink wrap in to secure the UAT to its mounting board and got that secured down in its place. I also was able to start gluing in the canopy glass while I was waiting for the shrink wrap. Here are some pics to show:

RE: Skymaster Mig29 with P200
 

The G10 work looks great! Did I give you a FOD screen for the 200?

RE: Skymaster Mig29 with P200
 

No FOD screen Dantely, you will definitely want one though. FOD could easily come through the wheel well from the front tires and find its way into the turbine.