HK Spitfire balsa 1234mm CG?

[Bobmic]

My guess is that servo cover is the plastic packaging from a spinner.

Thanks Ed - I have a cover and it fits perfect.

[sihinch]

I've just found out that the steel rule that I use to do CG measurements with is not scribed with mm markings! I got it from Gillette, when I worked there and the scale is "number of blades." I never saw that before tonight, and I left Gillette 7 years ago! I thought it was mm.

100 blades looked like approx 1cm. But guess what, it's not!  100 blades is about 1.2cm. So all my CG measurements are approx 20% further back than planned!

So my 75mm CG on my Spit could be about 90mm!!

Something to check before 2013 flying!