I've been running 40VF in my new model. Prior to that model, I ran 40VF's in another ship and had an absolutely bulletproof run. Not with this one. The model tends to charge on outsides of a horizonal, vertical and overhead 8's. Strangely enough, I do not get any charging on outside loops and lap times are equal.

Here's what I've tried:

1) plastic tank with 2-into-1 clunk
2) plastic tank with single clunk and fixed uniflow
3) metal uniflow(using it now)
4) two different engines.
5) with and without engine cowl(suspected airflow problem)
6) different venturi shapes.
7) Twist NVA back and forth

Nothing seems to work!  HELP!!!!

I've been running 40VF in my new model. Prior to that model, I ran 40VF's in another ship and had an absolutely bulletproof run. Not with this one. The model tends to charge on outsides of a horizonal, vertical and overhead 8's. Strangely enough, I do not get any charging on outside loops and lap times are equal.

Here's what I've tried:

1) plastic tank with 2-into-1 clunk
2) plastic tank with single clunk and fixed uniflow
3) metal uniflow(using it now)
4) two different engines.
5) with and without engine cowl(suspected airflow problem)
6) different venturi shapes.
7) Twist NVA back and forth

Nothing seems to work!  HELP!!!!

Hi Steve
What size is the venturie, sounds like the  motor may want a slighlty smaller  venturie and you will need to get the tank set perfect  on that combo

Randy