UAT Position
05-05-2009, 10:36 AM
#2
RE: UAT Position
ORIGINAL: hmarmaizmd
I've seen a lot of UAT positioning. Which is the best position and where??
Hector
I've seen a lot of UAT positioning. Which is the best position and where??
Hector
05-05-2009, 10:41 AM
#4
05-05-2009, 10:51 AM
#5
RE: UAT Position
ORIGINAL: hmarmaizmd
Hi! Andy. Then why I've seen a lot of guys placing it completely upright if the pickup
tube doesn't extend all the way to the back??
Hector
Hi! Andy. Then why I've seen a lot of guys placing it completely upright if the pickup
tube doesn't extend all the way to the back??
Hector
You defininetly want to be able to see the lines to check on them for air bubble leaks while running if possible. I always use clear lines on fuel for this reason.
05-05-2009, 10:51 AM
#6
RE: UAT Position
Hector,
If you orient the UAT as Andy indicated, then when you refuel the model thru the UAT, you will displace the air bubble (with fuel) out of the UAT and thru the tank system. If the UAT is vertical and you refuel thru the UAT, you'll be starting with a bubble in the UAT already as you've noticed (under the screw-on cap). I don't think it is necessary to have all the air out of the UAT, but I'd say that less is better.
I orient mine as Andy states, whether it is a UAT, or a similar tank with a centered fuel filter...
If you orient the UAT as Andy indicated, then when you refuel the model thru the UAT, you will displace the air bubble (with fuel) out of the UAT and thru the tank system. If the UAT is vertical and you refuel thru the UAT, you'll be starting with a bubble in the UAT already as you've noticed (under the screw-on cap). I don't think it is necessary to have all the air out of the UAT, but I'd say that less is better.
I orient mine as Andy states, whether it is a UAT, or a similar tank with a centered fuel filter...
05-05-2009, 02:11 PM
#7
My Feedback: (1)
Join Date: Nov 2004
Location: BarranquillaAtlantico, COLOMBIA
Posts: 977
Likes: 0
Received 0 Likes
on
0 Posts
RE: UAT Position
ORIGINAL: Ron S
Hector,
If you orient the UAT as Andy indicated, then when you refuel the model thru the UAT, you will displace the air bubble (with fuel) out of the UAT and thru the tank system. If the UAT is vertical and you refuel thru the UAT, you'll be starting with a bubble in the UAT already as you've noticed (under the screw-on cap). I don't think it is necessary to have all the air out of the UAT, but I'd say that less is better.
I orient mine as Andy states, whether it is a UAT, or a similar tank with a centered fuel filter...
Hector,
If you orient the UAT as Andy indicated, then when you refuel the model thru the UAT, you will displace the air bubble (with fuel) out of the UAT and thru the tank system. If the UAT is vertical and you refuel thru the UAT, you'll be starting with a bubble in the UAT already as you've noticed (under the screw-on cap). I don't think it is necessary to have all the air out of the UAT, but I'd say that less is better.
I orient mine as Andy states, whether it is a UAT, or a similar tank with a centered fuel filter...
I wonder to know, why the UAT is not as similar as a fuel tank, with a flexible hose with clunk that pick up fuel from its bottom?
If all the tanks and the one that works as UAT are filled full without air, why is needed an ultimate air trap? While this tank is full, being feeded by the other tanks, where is going the air come from?
Guillermo
05-05-2009, 02:46 PM
#9
My Feedback: (1)
Join Date: Nov 2004
Location: BarranquillaAtlantico, COLOMBIA
Posts: 977
Likes: 0
Received 0 Likes
on
0 Posts
RE: UAT Position
ORIGINAL: AndyAndrews
It would if your clunk had the same type of bubble removal medium or similar as a UAT. Some people do this and it seems to work fine.
It would if your clunk had the same type of bubble removal medium or similar as a UAT. Some people do this and it seems to work fine.
With UAT you can use only 3/4 of the fuel-..... I really don´t know if with a 4 Oz UAT, for a P-80, 1 Oz (1/4 of its capacity) of remaining fuel will give you 30 seconds of flight before a flame out.....?
Guillermo
05-05-2009, 03:01 PM
#10
RE: UAT Position
ORIGINAL: Guillermo Ibanez
The big difference with UAT then is that with a clunk, you can use all the fuel in the tank just in case.... of course you are going to flame out but in case you need 30 or more seconds of power......
With UAT you can use only 3/4 of the fuel-..... I really don´t know if with a 4 Oz UAT, for a P-80, 1 Oz (1/4 of its capacity) of remaining fuel will give you 30 seconds of flight before a flame out.....?
Guillermo
ORIGINAL: AndyAndrews
It would if your clunk had the same type of bubble removal medium or similar as a UAT. Some people do this and it seems to work fine.
It would if your clunk had the same type of bubble removal medium or similar as a UAT. Some people do this and it seems to work fine.
With UAT you can use only 3/4 of the fuel-..... I really don´t know if with a 4 Oz UAT, for a P-80, 1 Oz (1/4 of its capacity) of remaining fuel will give you 30 seconds of flight before a flame out.....?
Guillermo
05-05-2009, 03:05 PM
#11
RE: UAT Position
There is no way a clunk will follow the fuel in a 4oz header. It would be best to mount a fixed pick up in the 3 dimentional center of the tank, even this way i believe you can get air if the tank goes 1/2 empty. With a UAT the perforated bladder type pick up it would work even if 1/2 the fuel is gone and still not draw air.
V..
V..
05-05-2009, 03:57 PM
#12
My Feedback: (1)
Join Date: Nov 2004
Location: BarranquillaAtlantico, COLOMBIA
Posts: 977
Likes: 0
Received 0 Likes
on
0 Posts
RE: UAT Position
ORIGINAL: Vincent
There is no way a clunk will follow the fuel in a 4oz header. It would be best to mount a fixed pick up in the 3 dimentional center of the tank, even this way i believe you can get air if the tank goes 1/2 empty. With a UAT the perforated bladder type pick up it would work even if 1/2 the fuel is gone and still not draw air.
V..
There is no way a clunk will follow the fuel in a 4oz header. It would be best to mount a fixed pick up in the 3 dimentional center of the tank, even this way i believe you can get air if the tank goes 1/2 empty. With a UAT the perforated bladder type pick up it would work even if 1/2 the fuel is gone and still not draw air.
V..
No more questions about UAT, at least from my point o f view.
Mine is installed exactly as Andy said in post No. 2
Guillermo
05-06-2009, 09:52 AM
#14
Thread Starter
My Feedback: (1)
Join Date: Jan 2005
Location: San Juan, , PUERTO RICO (USA)
Posts: 1,205
Likes: 0
Received 8 Likes
on
7 Posts
RE: UAT Position
I've always placed mine slightly upwards as per instructions.
Just wanted to get some input as to other positioning and,
reasoning behind it.
Hector
Just wanted to get some input as to other positioning and,
reasoning behind it.
Hector
