ORIGINAL: chris923
Happy Fathers Day!I am going to put 2 DLE 20's on my TF B-25. I want to Replace the 14oz tanks with 12oz tanks. The engines will be running at 3/4 power most of the time.Question, will I get 7 mins of run time at 3/4 throttle on a 12oz tank?
Chris, this depends on the rpm you are planning to operate the engine at......3/4 throttle is one clue but if you are turning 9K (small prop), it takes fuel to turn that speed
I run 11 oz tanks on the 30cc sized engines I run (OS 33 and DLE35). I run these at 2/3rds throttle mostly which for my set-up is around 6500 rpm. I get around 15 minutes run time with about 2 ozs left in the tank.
Your 20 should work plenty long enough on 12 oz gas. I'd guess at least 10 minutes unless you are turning pretty high rpm