MW 44 in ME262
 

Guy's

Can't get my photos up onto Vincents post, so I'll try here.

My Airworld ME 262 with two MW 44's.

Dave Wilshere

RE: MW 44 in ME262
 

Dave
Looks good mate, cant wait to see this baby go!

Paul

RE: MW 44 in ME262
 

Jet looks great, I am going to start mine in spring. I have a Tom Cook 262, Let me know how yours fly with the MW 44's. Good luck and keep them flying.

RE: MW 44 in ME262
 

Very neat dave, now get on with my king cat!!
M

RE: MW 44 in ME262
 

Paul

Ch Gr beginning of next month!

Dave

You and Joe as starter team!!

RE: MW 44 in ME262
 

No problem Dave, we will be there to light the fires!

RE: MW 44 in ME262
 

Never mind the MB place....will we be seeing it on 17th?

Cheers,

Dick

RE: MW 44 in ME262
 

Dick

As long as Ali's dream doesn't come true (involves engine out high G flick!)

Yup it should be there, also King Cat which I was going to start today, until wife pointed out something about a wedding anniversary today!

Dave

RE: MW 44 in ME262
 

Dave,
Nice work, are you running one 2L soda bottle tank and feeding one UAT for both motors?? There is lots of room in the wheel wells where you mounted the pumps and UAT. Uncle Joe had two 42oz custom tanks in the nose forward of the saddle and two uat`s, the let flew fine being very nose heavy. Do you have some pics of the nacelle layout??

V..

RE: MW 44 in ME262
 

Vincent

Yes The coke bottle is on the CofG 2 litres, This has a festo quick release on the feed. A Single Graupner Tank 250cc has two pick ups with sintered bronze clunks , one feeding each motor (if it runs dry both should stop!) I expect to throttle well back and get 8-9 minutes.
The hopper has a quick connect female, the idea being that the hopper can keep fuel in it stopping bubbles getting to the motor.
ECU packs are in the rear of the wheel wells, pumps in the front, ECU's on top of the wing. I made short extension leads to allow the ground unit to be plugged into the fuselage.
I'll post more shots in the morning.
I have my motors well forward, so no lead is needed.

Dave

RE: MW 44 in ME262
 

Dave,

I have some ideas about setting two 1L bottles side by side on formers in the same spot as your 2L feeding on UAT and splitting off to the motors. I would be concerned with the 2L getting mostly empty and then grabbing some air and getting into you small header.You can mount a 12oz DF tank along side the 2L to act as an air trap before your header. My rookie has this setup and works well. Today we had a hell of a time priming and getting all the air out of the lines, and purging the UAT`S. We decided to leave the jet assembled till the jet rally to keep all the lines full. A valve at the motor down stream of the fuel pupm is needed to prime her up after the jet is taken apart and the fuel lines capped.

Vin...

RE: MW 44 in ME262
 

Dave

CG is critial, Used 5.9 inches DRY (no fuel)on "Col. KLUGE"
Good luck on the maiden, may the wind be straight down the runway & tempature mild.
Semper Fi
Joe

ps. The weather is always GREAT in Phoenix ,Arizona this time of year, I drive cross country (6000 miles rt)every year to attend Arizona jets which IMO is ONE of the top Jet events in the "STATES"

RE: MW 44 in ME262
 

Vincent

More shots

Dave

RE: MW 44 in ME262
 

Vincent

A 2 Litre bottle with a JetCat clunk will not introduce air-we run this without any UAT or hopper and have 100% success. The fixed centre tubes in my hopper will allow a third air in the hopper and I doubt I'll see more than a 1/8th when I land.
I won't have a priming issue as the hopper stays full and when I disconect the 2 litre bottle the quick release seals on the hopper.
The reason a "Pop" bottle works so well is the clunk (and flexible clunk tubing) My Harpoon drains completely dry including flips and 3-D stuff. I run a BVM UAT for added capacity and it never has more than an 1/8" of air!

Dave Wilshere

RE: MW 44 in ME262
 

Dave,

I did not notice flaps added in your pics?? do you have them?? I felt the jet would be fine without them but i used them anyway.The drag felt good on final and made the landing nice. I did have flaps on my electric 262 and it was kind of a glider on final, i was worried about the turbine idle thrust but it was not an issue.One other thing about the 2L tank, it looks like the tank is roughly split on the cg?? when its about 1/2 full the fuel will be mostly aft of the cg at certain times. The 262 loves to fly nose heavy but will kick up and bite you if the cg is aft just a tiny bit. I learned that on my first elec one.
V..

RE: MW 44 in ME262
 

Vincent


No flaps, I decided I didn't need tham with the large wing area and low projected weight-Anyway they can be fitted without major issues.
I had noted the low idle thrust on the 44 and with the gear hanging down it's got drag!
I'm not concerned about the fuel movement, the tank is split just infront of the c of g position.

Dave

RE: MW 44 in ME262
 

Dave,

There is considerable drag with the gear down. I made a circut with the wheels down and was at full throttle the whole way. Only when i clicked them up did i come back to about 70% for cruise.

Vin...