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Choose me an Engine!! - 12/11/2006 11:37:47 PM   
Zephirus79


 

Posts: 57
Joined: 11/9/2006
From: , GA, USA
Status: offline 		Well I have almost determined that my tower hobbies engine is damaged after crashing it. IT runs but I get deadsticks and such all the time now. Ive tightened and checked for air leaks and everything with no luck...

SO....


For a trainer and perhaps a 2nd plane such as a four star. WHat engine would you suggest and why? I want it to be semi easy to setup. I dont mind taking the time to set up an engine but I dont want to spend 1/2 the day at the field with the engine....




       Post #: 1

RE: Choose me an Engine!! - 12/11/2006 11:46:27 PM   
w8ye



Posts: 17464
Joined: 12/11/2001
From: Taylortown, OH, USA
Status: offline 		The Four stars are not fussy about which engine is on them.

A Four Star 60 is rather large in the house but OK at the field.

A four Star 40 will fly fine with any engine from a OS LA40 on up. I like the Saito 56 but if your budget will not stretch that far, go for a OS 46 AX or maybe a Tower 46?

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(in reply to Zephirus79)
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RE: Choose me an Engine!! - 12/11/2006 11:47:13 PM   
MinnFlyer



Posts: 19610
Joined: 4/22/2002
From: Willmar, MN, USA
Status: offline 		Give a little more details of the engine. Is it in the plane that crashed? It could be that the clunk got stuck in the front of the tank and that is why the engine is quitting.

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AMA# 42400 www.gettingairborne.com

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(in reply to Zephirus79)
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RE: Choose me an Engine!! - 12/12/2006 12:00:19 AM   
Zephirus79


 

Posts: 57
Joined: 11/9/2006
From: , GA, USA
Status: offline 		No No, I demolished my first plane so I bought another one and used the same engine / servos in the new one.

Since the first crash, I haven't been able to get it to run right. I wish I could explain what it is doing but there are so many things it does. Sometimes it dies going from idle to full throttle. Sometimes it dies on full thorttle. Sometimes it dies going from full throttle to idle. And then sometimes it dies in mid air with no change in speed.

The fuel tank and all that stuff is new and I know I got that part right...


Im taking the big parts off the engine now to see if I can find anything wrong and attempt to seal up any air leaks.

(in reply to MinnFlyer)
       Post #: 4

RE: Choose me an Engine!! - 12/12/2006 12:06:41 AM   
w8ye



Posts: 17464
Joined: 12/11/2001
From: Taylortown, OH, USA
Status: offline 		Sounds like you are running it too lean?

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Original AMA #31261

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RE: Choose me an Engine!! - 12/12/2006 12:20:15 AM   
Cambo



Posts: 1516
Joined: 6/20/2005
From: Phoenix, AZ, USA
Status: offline 		Agreed
Definatly symtoms of a lean engine

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RE: Choose me an Engine!! - 12/12/2006 1:10:50 AM   
Zephirus79


 

Posts: 57
Joined: 11/9/2006
From: , GA, USA
Status: offline 		Hmmm well tomorrow Im gonna try to redo everything from scratch. Just to make sure it is not a lean engine. Im gonna start from square one. I rebuilt the engine tonight and found my airleak possibly (carb was up a bit).

(in reply to Cambo)
       Post #: 7

RE: Choose me an Engine!! - 12/12/2006 2:09:29 PM   
MinnFlyer



Posts: 19610
Joined: 4/22/2002
From: Willmar, MN, USA
Status: offline 		Well, that would cause a lean run. Keep us updated

_____________________________

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AMA# 42400 www.gettingairborne.com

"Those are my principles. If you don't like them, I have others." - Groucho Marx

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RE: Choose me an Engine!! - 12/13/2006 3:09:33 PM   
Jezmo



Posts: 821
Joined: 6/26/2006
From: Spring, TX, USA
Status: offline 		Also, look for tiny holes in the fuel lines both before and after the remote needle (They can be very hard to find) as well as the location of the fuel tank in the new plane. If it is too low it can cause problems. Good luck

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Raptor 50 V2 OS 50 Hyper, T-Rex 450XL CDE, Spektrum DX7, SuperTigre OS FOX Saito Enya Jett TT

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RE: Choose me an Engine!! - 12/13/2006 4:52:22 PM   
SRimer


 

Posts: 29
Joined: 9/3/2006
From: Skokie, IL, USA
Status: offline 		Go ST cheap and good.

(in reply to Jezmo)
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RE: Choose me an Engine!! - 12/13/2006 6:47:26 PM   
bob27s



Posts: 4821
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		Ive seen two different Tower .46 engines end up with hairline crankcase cracks after crashes. Both ran weird after a crash. Subsequent troubleshooting and careful inspection found the cracks (cracks resulting in tiny air leaks, which varied with engine operating temperature).

Just something to consider if all else is ok with the engine and fuel system.

The ST engines are a good alternative. I am also fond of the TT46 Pro. Both good power plants, not exensive.


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Jett Engineering - Engine Mfg Support Forum Host

(in reply to Zephirus79)
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RE: Choose me an Engine!! - 12/13/2006 9:21:06 PM   
Sport_Pilot



Posts: 7718
Joined: 1/21/2002
From: Acworth, GA, USA
Status: offline 		Check for dirt in the airbleed hole on the front of the carb. Dirt often plugs the air bleed during a crash. Use a thin wire to clean it out.

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RE: Choose me an Engine!! - 12/14/2006 3:16:41 PM   
wcmorrison



Posts: 774
Joined: 10/2/2002
From: Weatherford, TX, USA
Status: offline 		I too would check for crap in the fuel train, disassemble the carb barrel and blow it out. Aside for the lean run, it also sounds like an intermitten fuel clog/stoppage.

Good luck,

Chip

(in reply to Sport_Pilot)
       Post #: 13

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