Horton

[ACE-OF-ACES]

Originally Posted by tools4fools

The Jumo is a much larger engine, stretching out further behind the wing.

Agreed as my drawing showed

Originally Posted by tools4fools

If you look at your own drawing there is only a small part of the BMW after the center wing, almost entire weight is in front.

Agreed as my drawing showed

Most of the weight (mass) of the BMW engine is FORWARD of the cg..

Which is explains why the OUTER wing was swept BACKWARDS

As in to put some weight (mass) behind the cg to counter the weight (mass) of BMW engine sticking out ahead of the cg..

Originally Posted by tools4fools

Not so with the Jumo, where approx 40% is in the back of wing center.

Agreed as my drawing showed

And is the essance of my point

As for 40%, I don't know if I would go as far as to say 40% of the weight (mass)..

In that assumes a uniform distribution of weight of the engine, framing, skin, etc.

But I think we can all agree that there is more weight (mass) behind the cg due to the replacement of the BMW with the Jumo..

With that said, we know..

The cg was 'set' for the BMW configuration
The cg will 'change' with the replacement of the BMW with the Jumo

The additional weight (mass) behind the cg has to be offset with weight (mass) added ahead of the cg.

Which is explains why the INNER wing was swept FORWARD

As in to put some weight (mass) ahead of the cg to counter the weight (mass) of Jumo engine sticking out behind the cg..

Hope that helps! S!