RunRyder - thunder tiger 39 dies in flight

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Speed - Performance - Drag Race > thunder tiger 39 dies in flight

dirtbag
Heliman
Location: eastbay area , california

I`ve got a raptor 30 with the o.s 39 motor.after about two-thirds of the tank used she dies.And it`s a real bummer (havnt learned to auto down yet)how many turns should the screw be out?Thanks in advance .

a little duct tape-crazy glue good to go

09-18-2004 Over year old.

shykmaster
Senior Heliman
Location: New York

REPLACE ALL OF YOUR FUEL LINES...AND MAKE SURE THE TANK IS HOLDING PRESSURE.

10-29-2004 Over year old.

Dragonfryer
Senior Heliman
Location: Singapore

Nick on your clunk line

Cut your clunk line with a very sharp hobby knife. Make sure the tubing does not crack when pushed onto the nipper.
I had the same problem sometime ago when the clunk line popped off.

12-08-2004 Over year old.

airdodger
Key Veteran
Location: Johnston USA

The needle should be out enough that you get a steady stream of smoke. You can test for heat with your finger on backplate should be able to touch for a few seconds . More info might be helpful like fuel ,blade pitch and time on motor. I did not know OS made a .39 . Chris

12-08-2004 Over year old.

wolfdad
Key Veteran
Location: Southern Maryland

Also, be sure your clunk line is NOT too long. Contrary to popular opinion, the clunk line does NOT have to reach from one end of any tank to the other. The length of the clunk line needs to be so as to reach the bottom and top of the tank (upright or inverted) with a little extra to hit the high and low spots. If the clunk line is too long and the clunk comes off...or even if it doesn't, the possibility of the line jamming at one extreme or the other is very good and, once out of fuel in the main...stand-by because you will be getting your auto practice in.

wolfdad sends....

"There are those who have...and, those who will" IRCHA #2117, AMA #70068, Turbine Waiver #105

12-08-2004 Over year old.

HOMEPAGE

Obsessive
Key Veteran
Location: 41.73N 71.41W

I know this engine pretty well. I killed 1 of them where the bearing cage disintegrated at 8 gallons....JK helped kill the second by leaning the top end too far in pursuit of raw power (at 4 gallons) - It was running neck and neck with a 50 for a short while there.....Heh heh. The stock bearings are junk, and increase the heat substantially in the engine. Get a quality bearing replacement set soon.

Stock, the high speed needle should be out 3 turns, the low speed needle out 3 to 3.5 turns. Don't turn the high end in any closer than 3, and don't turn the low in closer than 3. They do not tune like an os.

12-10-2004 Over year old.

HOMEPAGE

dirtbag
Heliman
Location: eastbay area , california

Thanks all raptor flys great

Thanks for the info about my o.s.39 in my raptor.She now flys great.I do appreciate it.

a little duct tape-crazy glue good to go

12-26-2004 Over year old.

Heli PIC
Senior Heliman
Location: Petaluma, CA USA

I hope it's TT39 instead of OS37 you guys have been talking about.

07-26-2005 Over year old.

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