Fuel Tank Problem

[Garf]

I am having a problem with the tanks on my Tutor 2 ARF. The original plastic clunk tank was so bad, it destroyed an engine with a 10 lap dead lean run at the end of the flight. My own Garf steel clunk tank gives me about 2 laps of a sagging run at the end. What does it take to give a clean cutoff? would muffler pressure help?

      "SAVE ALL THE PIECES"-Phil Brown

[fred krueger]

Phil,

Try a low profile chicken hopper tank.  Email me or Crist Rigotti for plans.

Here's a previous thread:

http://stunthanger.com/smf/index.php?topic=2565.0

Fred

[Bob Reeves]

Cock the rear of the tank out about 1/8 inch. I started doing this on all my airplanes and have a couple profiles with scary clean cutoffs. No warning at all they just quit like someone turned off the switch.

[Wynn Robins]

what motor?

[Garf]

what motor?

ST G21 .46, TF Tutor 2 ARF

[Ron King]

Cock the rear of the tank out about 1/8 inch. I started doing this on all my airplanes and have a couple profiles with scary clean cutoffs. No warning at all they just quit like someone turned off the switch.

Agreed. I was also having cut out problems in the clover and a friend mentioned this trick. Two popsicle sticks tucked under the back edge of the tank worked wonders. 

I now build in a "ramp" for my tanks on profile fuselages. The front is recessed 1/4" and my engines fly fine.

I use GRW uniflow tanks, with no pressure - and I do get a lap or two warning, but no stutters.

Ron