No, no...you got it all wrong my friend. We are not proposing use of 40% IMAC models in Pattern. Yes these are expensive toys, even more so than the typical average 2 meter thoroughbred Pattern model.

But I think that the rules for Pattern allow 2 meter sized IMAC planes (good points Timble and Drac1) powered with say a 33-50cc properly muffled engine (good point Bob) that meets weight requirements....And in our Sprtsman class, heavier is allowed for the most part.

In the lower classes, there is absolutely nothing wrong with that approach. Timble's point is why not? and I agree...... In the upper classes there is also nothing wrong with it except a thoroughbred pattern model flies Pattern schedules better, easier.....