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wingster · 10-11-2009, 11:15 PM

I flew an Explorer a few years back. The Explorer was the predecessor to the Excelleron, but was essentially identical. I moved the tank back against the wing tube. It flew well but was a little nose heavy even with an ounce or two of lead in the tail. Unless you move the tank so it is above the CG, the CG will always be a compromise. If the tank is in front of the CG, once you add fuel it will be nose heavy.

You will have to add a pump to the fuel system if you want to move the tank back and get a consistent fuel draw.

There is plenty of info in the Pattern forum of RC Universe on the Explorer and Excelleron. From the posts I read, 7.25" back is about right for the CG.

Here's a thread that will help. If you do a search you will find others.

http://www.rcuniverse.com/forum/m_23..._1/key_/tm.htm

10-11-2009, 11:15 PM	#2
wingster Flyin' Around Join Date: May 2007 Location: springfield, ma Posts: 26	Re: Excelleron 90 CG problem! HELP! I flew an Explorer a few years back. The Explorer was the predecessor to the Excelleron, but was essentially identical. I moved the tank back against the wing tube. It flew well but was a little nose heavy even with an ounce or two of lead in the tail. Unless you move the tank so it is above the CG, the CG will always be a compromise. If the tank is in front of the CG, once you add fuel it will be nose heavy. You will have to add a pump to the fuel system if you want to move the tank back and get a consistent fuel draw. There is plenty of info in the Pattern forum of RC Universe on the Explorer and Excelleron. From the posts I read, 7.25" back is about right for the CG. Here's a thread that will help. If you do a search you will find others. http://www.rcuniverse.com/forum/m_23..._1/key_/tm.htm