View Full Version : I'm going insane! OS 50 Hyper won't run!
thespin
03-12-2006, 04:01 PM
Alright, so it's been about 2 months of no flying, since my Raptor with a hyper hasn't been running. Whenever I try and start it, it'll sit happy until I remove the glow driver, when it just dies. It doesn't lean out or anything of the sort... This is the 2nd hyper I've had the problem with, first one was used, this one is brand new. I checked the fuel lines and clunk lines, no dents in the muffler (which is a standard thunder tiger muffler), it's not too rich (three seconds until it leans out with the pinch test), nothing. I'm using an OS #8 plug (which I've replaced SEVERAL times with new ones).
Thanks
DebianDog
03-12-2006, 05:02 PM
junk in the carb? No, that would not be a glow driver issue mmmm
tnreefguy
03-12-2006, 06:07 PM
Sounds like its too rich and its cooling the glow plug.
WayneBrown
03-12-2006, 06:28 PM
it's not too rich (three seconds until it leans out with the pinch test), nothing.
Whenever I try and start it, it'll sit happy until I remove the glow driver, when it just dies.
There's your answer, And your contradiction.
You cannot judge lean / rich with the glow driver on, period.
Begin by adjusting your idle setting leaner, and restart.
Set idle speed just high enough to keep running and remove the glow driver.
Adjust mixture until you can idle the motor without engaging the clutch, without the glow driver on, then you can begin working on high speed needle settings.
Main needle should be approximately 1 3/4 to 2 1/4 turns out, Check this with a spare length of fuel line from the carb to your mouth, adjust lean until you can neither A) no longer hear hissing, or B) sense no more air passing through the needle.
It is not advised to turn the needle hard onto the seat, You will distort the tip of the needle and cause later issues.
Begin with adjusting the main needle, then if needed the idle mixture/ idle speed until you get it running.
Sounds like its too rich and its cooling the glow plug.
DING DING DING!!! We have a winner!!
Thats exactly what it is.
Not to contradict the suggestions of the others, which I agree should be the fist check, but if that doesn't work, there is the possibility of the fuel being"wet". Alcohol and the synthetic oils they use in heli fule are extremely "hygroscopic" meaning they will pull water from the air, and thus make it not run well, if it is bad enough, it will act like an overly rich engine, won't take a load at all, and the like.
If the mixture doesn't get it, try a tank of fresh fuel.
DavidH
03-12-2006, 07:11 PM
Alright, so it's been about 2 months of no flying,
I agree with Ivan. Try some fresh fuel
David
thespin
03-12-2006, 07:17 PM
"Begin by adjusting your idle setting leaner, and restart.
Set idle speed just high enough to keep running and remove the glow driver."
The engine died the instant the glow driver is removed, I tried leaning it out so that the idle needle is around 1-2 o'clock, but it'll only run for a little over a second after I pull the glow driver if the engine is running at a fairly high idle (it dies almost instantainously if it's at a low idle), but not long enough to do the pinch test or anything like that.
Should I lean it out more? Sorry, please bare with me, I'm really new to this
thespin
03-12-2006, 07:22 PM
"won't take a load at all, and the like."
Oh wow! Well, that'd explain it. I'm using a slimline pump, and odds are air has made it's way up the fuel tubing and into the fuel. Also, with the other engine with the gurus at the field working on it, the engine would just start to spool the head up, but then it'd die right there on the field. So yeah, that's gotta be it. I've got a spare jug of coolpower, so I'm gonna give a shot as soon as my glowdriver finishes recharging. Thanks a ton guys!
WayneBrown
03-12-2006, 07:26 PM
Yes, lean it out a bit more.
Follow the directions above 1 3/4 to 2 1/4 turns out on the main needle, and try again.
If it still won't idle, lean the idle mixture some, and try again. If you simply cannot get it, try different fuel. I seal all my jugs the best I can, and I really didn't think of that. It is a distinct possibility!
What fuel are you using BTW?
thespin
03-12-2006, 09:29 PM
New fuel fixed it! Runs solid now.
DebianDog
03-12-2006, 09:51 PM
Ivan/Harky :noteworthy
tnreefguy
03-12-2006, 10:06 PM
I guess i was not right lambird.
Water logged fuel is one of the tougher things to figure out. Just remember that the fuel LOVES water.
The oil in teh heli fuel (magnum at least) smells suspiciously like PAG or POE A/C oil for R134a. When techs open the system up on R134a, they have to put the system on a deep vaccuum for 1 hour minimum to boil the water out of the oil, 8 hours is prefered. I can't remember the exact ratio of how much water that stuff will hold, but it is a lot and it doesn't take long to get in there. The alcohol in the fuel only aggrivates the situation.
Anyway, I glad you got it worked out.
Have fun.
WayneBrown
03-13-2006, 07:27 AM
I guess I learned something too, the obvious isn't always the answer..
Of course I don't keep fuel in the jug that long anyway..
Glad you got it worked out!
tnreefguy
03-13-2006, 09:51 PM
ya lamebird yours is usually spilled on the ground from a busted heli :lol: kinda reminds me of a murder victim. I am bringing some white chalk with me for bham. Sounds like there is going to be a massacar
PS my spelling sucks.