G'day

Most planes I have built have had to have some lead up front to get the CG right. I start by putting everything as far forward as I can, I use a heavier engine if one is available and then I add some lead as far forward as I can get it.

There are also available heavy spinner nuts which are useful. As they are right at the very front of the plane, they are very effective and don't need to be as heavy as lead added at the firewall.

I usually add the lead either to the sides of the engine mount ( nut and bolts to hold) or I epoxy sheet lead inside the front cheeks of the model. The trick here is to fix slightly too little so you can easily trim it with a bit extra if you need to.

One model I have, Hanger 9 Sopwith Camel, has a box provided to put lead in. I don't know how much I added but it was quite a lot.

Cheers - oh and remember "Nose heavy planes fly badly, tail heavy planes fly once".

Mike in Oz