RE: Tower hobbies .46 dies during flight? help!  
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    • All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> RE: Tower hobbies .46 dies during flight? help!
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    RE: Tower hobbies .46 dies during flight? help! - 5/4/2004 5:23:13 PM   
    Matt Kirsch



    Posts: 7087
    Joined: 7/5/2002
    From: Rochester, NY, USA
    Status: offline     		Send me your so-called "doorstop" Tower Hobbies .46 engines. I'd offer money, but then we'd have to take this discussion over to the marketplace

    (in reply to Blackie)
           Post #: 26

    RE: Tower hobbies .46 dies during flight? help! - 5/4/2004 7:50:48 PM   
    taildragger101



    Posts: 83
    Joined: 3/8/2002
    From: archbold, OH, USA
    Status: offline     		One other thing no one has said, I had the same prob with my 46 on my profile , nose high and it starved for fuel. Found out minimal muff preasure. Had a rubber extension on the outlet and took a tiestrap and put the sqeeze to it. Runs like a dream. Try this before you use it as a paper weight

    (in reply to Matt Kirsch)
           Post #: 27

    RE: Tower hobbies .46 dies during flight? help! - 5/4/2004 9:03:21 PM   
    JimRoss



    Posts: 1127
    Joined: 2/18/2003
    From: Humble, TX, USA
    Status: offline     		Naw, just box it up and send it to Jim Ross, he knows how to make 'em run.
    After all, a paperweight won't fly anything.


    _____________________________

    No matter where you go, there you are.
    Of All the people I know, you're one of them.

    (in reply to taildragger101)
           Post #: 28

    RE: Tower hobbies .46 dies during flight? help! - 5/4/2004 9:21:00 PM   
    William Robison



    Posts: 20269
    Joined: 11/10/2002
    From: Mary Esther, Florida, FL, USA
    Status: offline     		All right!

    We have one who will take the doorstops, another who wants the paperweights. Now all the rest of you can send me the trash bag fillers.

    Haw.

    Bill.

    _____________________________

    Real Airplanes have Two Engines
    AMA 25139 - More than 40 years.

    (in reply to JimRoss)
           Post #: 29

    RE: Tower hobbies .46 dies during flight? help! - 7/28/2004 4:57:02 PM   
    jsevey


     

    Posts: 55
    Joined: 7/13/2004
    From: Nacogddoches, TX, USA
    Status: offline     		This may be way over-simplified- but I recently deadsticked my Kadet MkII on 3 successive flights within 30 seconds of taking off. Out of frustration, I packed up and headed home. The fuel line was empty so I figured I had a major leak somewhere. I have limited storage at my house and hang my planes nose down for storage. I hung the plane for a week and the following weekend I brought the MKII out to the garage. I pulled the tank and saw that the klunk had bent the fuel line down and was leaning against the front of the tank and hung up on the top side of the supply line. When I go flying now, I always check the klunk before I even put on the wing or fill the tank. 25 flights later- no more flameouts. I did get some good experience turning the plane around deadstick right after takeoff and landing, but I'd rather not have to do that anymore.

    Just a thought.

    (in reply to dcamp)
           Post #: 30

    RE: Tower hobbies .46 dies during flight? help! - 12/10/2004 3:32:53 PM   
    Prop Nut



    Posts: 1561
    Joined: 5/4/2004
    From: Coral, MI, USA
    Status: offline     		Here is another thought, my only one for the day......so dont waste it. I read in the AMA mag about others having this trouble. Seems the screw holding the two halves of the muffler together (Dont know myself if the tower has a two piece muffler, I use OS, they always work......no..........no......dont flame me!!!) comes loose and in flight the higher rpm causes the back pressure loss to kill the engine. I believe the artical is in the December issue, not real sure as it is in the reading place and I am in the office. Its winter here and I am to lazy to walk to the bathroom and fetch it. But, if anyone wants more info on this I guess I could be talked into it. No telling when I would get back out of there though, have several new model magazines I havent yet purused.

    _____________________________

    Scope? Listerine? Or Prop Wash?

    (in reply to jsevey)
           Post #: 31

    RE: Tower hobbies .46 dies during flight? help! - 12/10/2004 4:46:10 PM   
    Alkaline


     

    Posts: 329
    Joined: 8/22/2004
    From: , LA, USA
    Status: offline     		my tower hobbies sucks as well, I even did warranty replacement on it... man I'm not paying another 7.99 to ship to tower just to get another retarded 46
    We should all get together and sue tower for making such horrible engines.

    (in reply to jsevey)
           Post #: 32

    RE: Tower hobbies .46 dies during flight? help! - 12/10/2004 7:00:26 PM   
    dwaynenancy


     

    Posts: 75
    Joined: 2/7/2002
    From: Amarillo, TX, USA
    Status: offline     		Send me your tired and poor. Dwayne in Amarillo

    _____________________________

    Dwayne

    (in reply to Alkaline)
           Post #: 33

    RE: Tower hobbies .46 dies during flight? help! - 2/10/2005 10:51:03 PM   
    Gravityisnotmyfriend



    Posts: 852
    Joined: 3/1/2004
    From: Greenville, WI, USA
    Status: offline     		I have two tower engines. One, that I bought new, runs like a champ - makes tons of power. After its warmed up, it will start with one or two flips of the prop. The other one, which was given to me, has never run right (that's why it was given to me). If I tune it for WOT it makes monster power, but won't idle. If I tune for idle, it dies in the mid-range. But, after reading Bax's post, I'm flabberghasted. I've been reading all I can about engine tuning. As someone else said, it does appear to be a black art. From what I understood, you always tune the low speed first, then the high speed. I thought that the low speed settiing affected the high speed, but not the other way around and that's why you adjusted the low speed first. I also thought that I was well informed that these engines leak around the front bearing. I presently have my poor running engine dismantled with the intention of replacing the front bearing. I did a search to find more info and came across this thread. I guess I'll put it back together and see what I can do. If I can get this one to run like my other one, I'll be a very happy guy.

    _____________________________

    The mathematician sees the glass as twice as big as it needs to be. The engineer sees it as full with a Safety Factor of 2.

    (in reply to dwaynenancy)
           Post #: 34

    RE: Tower hobbies .46 dies during flight? help! - 2/11/2005 12:03:41 AM   
    Gravityisnotmyfriend



    Posts: 852
    Joined: 3/1/2004
    From: Greenville, WI, USA
    Status: offline     		Just a quick update. I put the engine back together and I compared the gap between idle needle and fuel nozzzle to the engine that runs good. I guesstimate (I don't have a feeler gauge that will fit in the carb) that the good running engine has about a 1.5mm gap. Then I looked at the poor running engine. Guess what - no gap! I'm amazed that the thing ran at all. I'm looking forward to putting it on the test stand and see what it'll do. Bax, thanks for the info. I'll post how it turns out.

    _____________________________

    The mathematician sees the glass as twice as big as it needs to be. The engineer sees it as full with a Safety Factor of 2.

    (in reply to Gravityisnotmyfriend)
           Post #: 35

    RE: Tower hobbies .46 dies during flight? help! - 2/21/2005 2:59:51 AM   
    dasflugmodele


     

    Posts: 104
    Joined: 7/13/2002
    From: Kirksville, MO, USA
    Status: offline     		Perhaps I should have left the tower 46 I have at the yard sale. Its new never run but I need mfg. instructions for it. With all you folks throwing them out someone must have a copy of the instructions I could beg,borrow or comshaw. Hate to ruin a perfectly new 46 by not following the mfg. rules.
    das

    (in reply to Gravityisnotmyfriend)
           Post #: 36

    RE: Tower hobbies .46 dies during flight? help! - 2/21/2005 5:00:27 AM   
    Prop Nut



    Posts: 1561
    Joined: 5/4/2004
    From: Coral, MI, USA
    Status: offline     		They come with Instructions? What are these instructions things? Do you get them with everything? kidding

    _____________________________

    Scope? Listerine? Or Prop Wash?

    (in reply to dasflugmodele)
           Post #: 37

    RE: Tower hobbies .46 dies during flight? help! - 2/21/2005 3:19:46 PM   
    RC-Captain



    Posts: 2972
    Joined: 11/12/2002
    From: RCHill, NJ, USA
    Status: offline     		Although You didnt provide enough information this is what I came up with from the tower web site.

    Factory Settings:
    High speed: 1-1/2 turns out
    Low end: 2mm gap
    Idle speed: N/A- adjusted through throttle

    Once you set the needle , then do your up and down test with the airplane . be very careful people are just cutting themselves up now a days witht he prop.

    _____________________________

    I finally broke bread and bought a real charger , THE TRITON 2............

    (in reply to Prop Nut)
           Post #: 38

    RE: Tower hobbies .46 dies during flight? help! - 8/7/2005 2:18:20 AM   
    mrfx2001



    Posts: 48
    Joined: 11/12/2003
    From: Mechanicsville, VA, USA
    Status: offline     		What's with that..full moon lunar year...one of the guys had the nerve to chop off the end of his thumb and then bleed all over the interior of my car as I carried him to the hospital.

    (in reply to RC-Captain)
           Post #: 39

    RE: Tower hobbies .46 dies during flight? help! - 8/7/2005 2:27:44 AM   
    mrfx2001



    Posts: 48
    Joined: 11/12/2003
    From: Mechanicsville, VA, USA
    Status: offline     		Gentlemen,
    Here are some thoughts I had on the subject and thought I’d pass them on. Every field has an engine guy or two and I’m one.
    I am an old nitro boat racer from the 60’s, 70’, and 80’s. I have two of these tower 46’s and some MECOA’s and GMS’s and they all exhibit these symptoms. (Seems to be all of the Chinese \ American knockoffs of the OS 46). Oh yes, I run OS too. The problem has been hit on a bunch of times in this thread. Engine leaning, then thermal runaway. The engine goes lean for what ever the reason and then the hotter the engine gets the less the fuel draw. I went through my engines and found that if you have a machinist friend and get a carb adaptor for an OS carb made, then mount a OS carb the problem goes away. (I had some OS 4D carbs from the OS 46 marine engines lying around.) The OS carb seems to be superior to the original part. Yes, I know, this is not a practical solution to the delema. The problem is one of fuel draw, tank pr