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-   -   Help with inverted engine (https://www.rcuniverse.com/forum/3d-flying-82/3216231-help-inverted-engine.html)

DCpunk 07-30-2005 11:49 PM

Help with inverted engine
 
Hey guys im new to the forums. My names Brad, im 16 and this is the start of my second year of flying. I recently bought a showtime 4d 90 and the evolution 1.00. The engine is installed inverted and wont stop flooding because of the fuel line being connected lower than the fuel tank. Any solutions would be greatly appreciated. One thing i thought of is installing a "kwick fill fuel valve". One line runs into it from the fuel tank and another runs out to the carb. When u insert the fitting to fill it, it cuts fuel off to the carb and i was thinking if i inserted this when done flying to let all of the remaining fuel in the line to be burnt up and left this fitting in there for storage, it would solve this. Any other ideas? Thanks in advance.

3dman523 07-31-2005 06:18 AM

RE: Help with inverted engine
 
This happend on my harrier so I just mounted the engine side ways.I think they run better side ways to.

stomper 07-31-2005 06:33 AM

RE: Help with inverted engine
 
I'm not familiar with the showtime 4d 90. Is there room to lower the tank so it is inline with the carb?

You do not want to install a kwick fill fuel valve to fix this problem since it would leave your fuel open to the air/atmosphere which is not good!

goony 07-31-2005 06:55 AM

RE: Help with inverted engine
 
if you set your throttle trim down it should shut the throttle completly and stop any fuel going though the carb?

goony

EXTRA ADDICT 07-31-2005 07:08 AM

RE: Help with inverted engine
 
You could get yourself a Cline regulator. Then not only would your flooding problem be solved but you can move the fuel tank back to the CG. Then your CG will not change during flight as you burn fuel. The regulator is only about 50 bucks and very easy to install.

Zippi 07-31-2005 07:19 AM

RE: Help with inverted engine
 
DCpunk, I have a Magic Formula 3d with a Super Tigre G90 which has the same probem and I use an easy fueler. The fuel still wants to siphon back through the carb so I use a connector from another easy fueler and leave it plugged in until I'm ready to fill the tank for another flight. No extra money to spend, problem solved.

tripp3d 07-31-2005 05:36 PM

RE: Help with inverted engine
 
same thing with Harrier 3d and Evo 100, I called Evo tech and they suggested using an idle bar plug or a hotter plug to keep the droplets of fuel from landing directly on the plug element. Long story short this helped but did not run the way I wanted it to until I broke down and mounted it sideways with the tank lined up with the carburetor. ONLY WAY TO DO IT... without spending money on regulators, etc... Buy a different muffler if you need to but I wouldnt fight the inverted glow two stroke ever again:D Hope this helps

dtburton75 08-01-2005 11:59 PM

RE: Help with inverted engine
 
Does all of these problems apply with four stroke too? Just asking because I am building a harrier .46 with a saito .82 and I have already cut my cowl and drilled my mount.

3dman523 08-02-2005 07:40 AM

RE: Help with inverted engine
 


ORIGINAL: dtburton75

Does all of these problems apply with four stroke too? Just asking because I am building a harrier .46 with a saito .82 and I have already cut my cowl and drilled my mount.
I would have mounted it sideways. i have a harrier 90 with a saito 120 and it kept flooding so we mounted it on its sidde. also with a saito its hard to get a glow ignitor on it when the engines iverted.

gjeffers 08-02-2005 08:03 PM

RE: Help with inverted engine
 


ORIGINAL: EXTRA ADDICT

You could get yourself a Cline regulator. Then not only would your flooding problem be solved but you can move the fuel tank back to the CG. Then your CG will not change during flight as you burn fuel. The regulator is only about 50 bucks and very easy to install.
people have ignored me also extra when i have offered a real solution to this problem, i guess they either dont know what your talking about, cant afford it, or just really want to talk about a problem, not solve it:D


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