ddennison

My Feedback: (15)

Finished installing my JMP accumulator for the 200SX in the UB after leaking UAT (air and fuel leak not responsive ot PTFE wrapping etc..)

Was wonderinf if those WHO USE THIS have tips for getting this thing running perfectly? Tom told me to place the "in" from the tanks at the highest point and I have done this -it is mounted 45degrees which he states is fine.

I was going to do my usual fill, maybe "drain" a few second off the fill line and then cap. Then start and observe

Should be that simple right? I have never had one where I couldnt see inside. The rest of my install to the tanks is solid, safety wired and not leaking with pressure tests.

Thanks for any thoughts,

Dave

David Searles

My Feedback: (49)

Dave,

That little part about draining "a few seconds off the fill line" is the key! The Accumulator needs to be purged of all air and that is exactly how it is done. Make sure that the Accumulator actually gets the "final fill" from the onboard tank backflow and it'll work great.

David S

ddennison

My Feedback: (15)

Thanks for the reply!

Dave

CraigG

My Feedback: (40)

I just fueled up all the tanks through the Accumulator the first time, making sure not to get any air in through the fill line when I capped it off, checked for leaks and eventually flew it. No problems ever since. Mine is mounted vertically.

Craig

Ragz

Mine is mounted vertically in a skygate hawk.  Yesterday I noticed bubbles going into the pump when I throttled UP.  There was not a single bubble coming INTO the ACCU from the on board fuel tanks, but several bubbles going up into the pump from the center feed line of the ACCU.  

ddennison

My Feedback: (15)

I pinch the line afte reversing flow (draining to purge) to cap it without air going back in the line.

Ragz

OK i understand this.  Do you do this "pinch" with other bubble traps as well?  Is this a must with all air traps?  Or only the accu.

ddennison

My Feedback: (15)

I do. I just bend the tubing and place the stopper in.

ww2birds

My Feedback: (14)

I installed a little jetcat valve inline with the drain line between the accumulator and the plug, originally as a "belt and suspenders" strategy in case the plug on the fill line leaks (which is a fatal issue...since the bubble trap .. anyone's .. will empty first), but find it very useful to make sure NO air ever gets into the line .. just shut off the fuel can pump when tanks full, then shut the jetcat valve, then plug the fill line at your leisure :-)

Did it on one of my more expensive planes, and have been replicating across the others since it works so nicely.

Agree 100% that the JMP accumulators are nice and 100% trouble free. BV states correctly that you don't get the diagnostic value of seeing a UAT collapse to show fuel plumbing impedance issues, and you don't see air over the fuel at the end of the flight .. but you CAN watch how long it takes for the line from the JMP to the last main tank to flow liquid after starting the fuel fill .. which tells you how much air was in there, if any.

Dave

jerito888

Some JMP Accumulator for sale .. thank you very much

ravill

My Feedback: (11)

mongo

My Feedback: (15)

not as old as it could have been...

sirrom

My Feedback: (4)

....but a relevant one. I just received a plane with one of these and was kind of wondering some of the same info.

Patrick

jerito888

Hello dear Patrick,

Would you be willing to sell me JMP Accumulator UAT?

Jerónimo

sirrom

My Feedback: (4)

I plan to hold on to it. It's a nice device that I am starting to understand...and this thread really helped out.

Patrick

jerito888

[CITA = sirrom; 12598535] Planeo aferrarme a ella. Es un buen dispositivo que estoy empezando a entender ... y este hilo realmente ayudó.

Patrick [/ CITA]
Can you show me a photo? Please

sirrom

My Feedback: (4)

Its the same as in post 4. The metal one.

Patrick

ravill

My Feedback: (11)

Jeronimo, I may have an old one laying around somewhere. Back from the future!