Andrew Bird

I have around 10 hours with a 180RX and stock pipe with no problem The pipe seems pretty bullet proof.

tucson

My Feedback: (1)

That sounds better then I thought.

If I could get 9 minutes with my KT 140 with a conservative throttle I will be very happy.

Thanks,

Stan

txshan130

My Feedback: (114)

Doubt you will get that that with a 140 on 100oz. I fly pretty conservative. P120sx is 12oz at full throttle. K140 is 14oz average.

paulhat

Hi txshan130.

Not sure if you allready mentioned it but what tanks is that with?
Paul.

txshan130

My Feedback: (114)

Main tank and wing tank....

tucson

My Feedback: (1)

Is the main tank and wing tank 100 oz? I would have thought it would be more. I have not flown my ultra flash yet it is ready to go though.

I have another 140 in another airplane with a 100 oz tank. @ 14 oz minute that would be approx 7 minutes.

I wonder how many oz are in the main tank only. anyone know?

paulhat

9 minutes is very good.

BlueBus320

My Feedback: (57)

Main tank- 74oz, wing-47oz = 121oz
from my notes, don't remember where i got the figures.
Jay

tucson

My Feedback: (1)

Thanks Jay, and Txshan

121 oz's not to bad.

Stan

dubd

That is really pushing it. I had a 160sx, which gets better fuel consumption and I was nearly empty after 7 min of mild throttle usage.

Dave Wilshere

I can fly any 120-140 UF 9 minutes, without just doing circuits. I'm sure if you look the videos early on are all around that, plus I don't use taxi tanks!
I have always seem to get better economy than a lot of people, I'm very on-off the throttle, 1/4 stick to full is my flying range, any less and you will be on the power harder and longer to get it going again, I back off whenever I can from the top. Being a heli flyer I'd say the throttle is my most active control.
My timer was set for 9 minutes, so sometimes I'd land over that, If I have a harder flight (faster) I automatically cut it shorter, but still doing 8 minutes I guess.
I have seen friends empty the tanks in 7-7.30 minutes, and can see what they are doing with the throttle, leaving lots of power on when its not needed.

Using my preferred 2 felt clunk set up, I am left with 1/2" of fuel in the main tank (with the tank level, so nose fractionally off the ground) and almost no air in the MAP Bubble Trap

tucson

My Feedback: (1)

I recently bought a Jeti radio system. I am using it on my Tutor. I hooked up a MUI 30 which keeps track of MAH's used by the fuel pump and sends it to the transmitter. I made a few flights and when there was enough fuel for two go arounds left I set that number of used mah in the transmitter. It has voice so now when the fuel tank reaches that level a voice comes on and says reserve fuel 3 times..

It will also tell me if I have a flame out.

I plan on putting one in my UF also.

All the radio systems are changing rapidly and it won't be long before all radios will have this. I think I paid around 37 dollars for the MUI 30.

Guesswork on fuel consumption is on it's way out.

Stan

gixer47

Hey guy's i'm in the middle of the Ultra build and today was filling up the tanks to check for leaks.While there was no leaks I noticed the main doesn't fill totally with the baffle in the middle.
Is this just how it is or should there be passage holes at the top like there is on the bottom of the baffle?
Or maybe im doing something wrong.

Pete

Midas D.

That's not the way it should be. There should be leaks

Got my tanks out as we speak cause i'm in the middle of the nose repair.
On the top side of the baffle there is an hole in mine.

Cheers,

Ed

Ps. what's that green stuff in there?? lemonade??

gixer47

Ok so I'll just drill a hole or two. Maybe the glue has covered it..Thanks for checking.

The green stuff is kero past its used by date. Still good to flush out my tanks I think.

Cheers
Pete

Dave Wilshere

Should be holes at the top, but that's a really interesting thing to check! Installed you would think its full and miss a few ozs.
Will add that to my list of checks!

Thank you

Dave

scoeroo

My Feedback: (9)

What I dont get is that there is a QC sticker on the tank ........????
Looks like they didnt check everything ???

NICKELUP

My Feedback: (82)

Are you using the saddle tanks? And how many min flying time you getting ?

spike5150

Just checked mine and holes were missing also. Perhaps the Q stands for Quick on the sticker

Andrew Bird

Using the main and wing tanks only and my timer is set for 7 minutes 10 seconds.

Walo

I'm using a "Variable Timer" and get about 13 Minutes running time with main and saddle tanks. (JetCat P140 RX)

Regards, Walter

husafreak

My Feedback: (3)

Well my UF is ready to fly, ran the Cheetah today. The CG ended up at 225mm. I think that is fine for the first flights although I was trying for 230mm. I could only get 88mm of flaps without changing my servo arm geometry so I'll fly it like that too.
I have the main and saddle tanks, there were a few creaking noises during fueling but it is dry so I am good to go. Should get pretty long flights with all that fuel.
I have a gradual pressure loss that I am not too crazy about, about 10 psi per hour gear up or down. The first place I want to check is the festo valve on top of the tank. When the tank is stuck all the way up in the nose the 4mm tubing may be forced to an odd angle. I certainly can't hear it...
The Tamiya Smoke paint was a bit of a disaster. It goes on so thin initially you can't see well how it is laying down. I ended up with some sags and one run. I ended up putting the whole can on in about 4 coats and got it as dark as possible to hide the mess, it looks black now

Bravo77

Is it necessary to paint the inside of the flash I finished mine and did not paint it any problems

txshan130

My Feedback: (114)

No, why would not painting the inside cause any problems???

husafreak

My Feedback: (3)

I am wondering what grease to use on the Behotec air valve just in case that is where the leak is. I have various oils and greases. Parker O-Ring grease among them but it is kinda sticky stuff actually. Maybe better for o-rings that don't slide back and forth.