Festo fittings for UAT
 

Hello guys,

i would like to re-visit a topic that has probably been discussed before.
i have a great UAT by Intairco, and i have never used anything but barb fittings (with safety wire on tube) in fear of Festo Quick fittings leaking air into the fuel when used on the suction side.

In my latest installaion (Ultra Lightning with ATJ 220SV) the use of Festo 90 degree Quick Connect elbows would make the installation much neater.

So - pros and cons of these festos?
share your experience please.

thanks.

Ask yourself why AMT use Festo fittings on the Nike engines which are used on the personal jump jet which is currently under test ! (two Nikes, one person to 10,000 feet at upto 100 mph for 10 minutes !!!!)

If AMT are happy to use these fittings on life dependant systems then they MUST think them suitable !!!

Just why do you guys keep on doubting doubt the suitability of these couplings ??

Ask yourself why AMT use Festo fittings on the Nike engines which are used on the personal jump jet which is currently under test ! (two Nikes, one person to 10,000 feet at upto 100 mph for 10 minutes !!!!)

If AMT are happy to use these fittings on life dependant systems then they MUST think them suitable !!!

Just why do you guys keep on doubting the suitability of these couplings for fuel system applications ??

David, where are they used in that system?
Are they used on suction side?

The push-in fittings we use are for pressure... not suction. It may be fine, (some people get lucky) but you may get flame outs when you suck an air-bubble.

That's my story, and I'm sticking to it. AND, if it was my jet... they wouldn't be there.

This is my Diamond with Intairco Supertrap/Festo couplings. ATJ 220 SV
Works great

http://www.rcuniverse.com/forum/atta...mentid=2185589

This has recently been picked over so do not expect a big response. You will either get a firm no it is not ok from some and yes ok from others. Why not set your engine system up on a test bench and run it up to full power with Festo fittings to prove it one way or the other, this would be a real benefit to others. The Intairco trap is clear so you can really see what is happening.

John

do you have a link to recent discussion?
to answer your question, i could do that, even in the jet itself. yet the test you offer does not take one important factor in consideration - and that is time.
as the system gets older and more "run-in", there could be different results. thats the reason i was asking for expirience.

You will find something here:
http://www.rcuniverse.com/forum/rc-j...-air-trap.html

Everyone has their opinion and that's fair. What I don't think is fair is people coming on here and telling experienced modellers that what they've had success doing for the last 15 years doesn't work. Then while they're at it they post a link to their website so they can try to gain financially from the statements they throw around.
i3dm do what works for you. Intairco have been world class for well over a decade and won't sell a product or configuration that doesn't work.
From a personal point of view, I have over 30 festo fittings in my CARF Mig 29 alone on suction and pressure made up by two Independant fuel systems (one for each turbine) and hydraulic system. In the Mig I've got festo elbows, Tees, Ys, straights, reducers and some pilot check valves. All with no problems. Pictured is my 1/5 SM F16 with fuel and smoke traps, also with the new Intairco super filter for large turbines.
WARNING--- FESTO HATERS MAY FIND IMAGE DISTURBING
Levi
http://www.rcuniverse.com/forum/atta...mentid=2185590

http://www.amtjets.com/Nike.php
NO, they are NOT. They use more appropriate type of Festo as you can see in the picture. Push in fittings are only used on pressure side. But what do they know....
Also years ago BVM had a directive out warning users to check the tubing regularly and cutting it back when the tube starts to collapse under the barb spring pressure.
No need to panic though because it work 99% of the time.
Andre
http://amtjets.bentech-taiwan.com/fuelpump.jpg

no...........not again....... ;-)

I use them wherever convenient, and I'm happy with it...... they will need some more care than barbed fittings, but are easier in maintenance...

Opinions are like asses.... everybody's got one.... :D