Ary wrote:Kalau dalam control line muffler bisa dicopot karena throttle nya kan full terus, tapi kalau uniflow tank diterapkan pada
control line, kita dapat pressurenya dari mana suhu 31 ??
Waduh ampoon pak Bli..., padahal aku dah bilang sama Eidri kalo nanya Uniflow aku lari deh....
Tapi ngikut2 kaum Control liner, itu saya kasi semacam vent keluar, masangnya kayak pitot tube pesawat beneran.
Cuma vent ini ujung yg didalem tanki di solder jadi satu sama clunk (main) yg ke carb.
Bukan kayak vent R/C yg di tekuk keatas tanki.
Jadi kayak ada 2 clunk di dalem tanki, satu ke carb, satunya lagi ke pitot tube diluar (atas), dan point to the airstream.
(Vent yg nyambung ke pitot itu ujung/clunk nya kecelup didalem Fuel)
Beberapa contoh yg beredar di Kaum C/L
:
Ini uniflow juga, pakai muffler, tapi ndak ada nipple alias gak pakai muffler pressure.
Ya bener saya juga nanya begitu (mana pressurenya??), dan Uniflow model gitulah solusinya kata para C/Liner tsb.
Dan memang banyak yg jual jadi tank2 uniflow gitu, misalnya merek Brodak dll.
Ini (versi C/L) kayaknya jadi untuk equalized pressure di dlm tank yg udah ada (ya atmospheric) aja.
Maka Stunter C/L yg ndak uniflow, biarpun throttle konstan kadang berubah sendiri.., bisa berantakan manuvernya !
Tapi kalo bicara pressure di Combat... (Gak pake muffler).
Naaah, ini malah bener2 pressure beneran kaya injection..., tekanan tinggi, super kenceng.
Lha wong.., Fuel tanknya kan pakai "Kondom"/ Karet Pipet yg ngisi fuelnya malah di teken/press dulu pake suntikan...
Maka kalo fuel line nya dilepas..., byaaarrrr
Saya denger2 ada yg pakai Uniflow di RC, apa model lain kah ???
Saya pernah liat skemanya buat OS 91 Heli, lebih complicated, Uniflow dengan Header Tank nya segala.
Dari Control Line Forum:
With the Uniflow system there are three lines. The feed line and the pressure line both have a clunk and got to within 1/4 to 3/8 of the back of the tank. The third line is the vent and goes to the top of the tank. As the pressure line is usually the most accessible it is used for filling the tank however either line can be used for filling. Some fuel will run up the feed or the pressure line but very little as the escaping air is easier to push out of the vent. when the tank is full fuel will come out of the vent. the vent will have to be plugged for flying. A check valve is not necessary.
In very basic terms, because both lines are submerged the only time that air can enter is when fuel exits, so there is a better balance of pressure/fuel in the tank. That is the very short answer. One of the disadvanteges is that the engine will quit at the end of the tank with no warning splutters.
