Tandem Cycling - Tandem riding little and large

I'm looking to get a second hand tandem to use for me and my son commuting to work via school. My son is 10 and 4 ft 9in, I'm 6ft 7in. What should I ask for? Are some makes better than others for larger riders? Any advice on a comfortable ride for both of us would be much appreciated.

Thanks

DB

I'm 6',1" and my eight year old is 4',6" and we ride a Trek T900 I picked up used on CraigsList. I did make a several upgrades however, we use it for bike paths and singletrack. He loves the singletrack. It fits us both well and was reasonably priced. It seems very solid, I have no complaints. I don't know where your located but I saw a used T900 on MA CraigsList for $700.00. Good Luck.

Geez. Forget about the 4'9" son, where can you find a stock bike to fit just you?

I'm 5'11" and my wife is 4'11", this is what we ride:

Co-Motion Periscope comes to mind. Very adaptable size-wise, but at 6'7" it will still be a bit of a compromise fit for you,

Thanks for the suggestions,
Sounds like I might be the difficult one to fit on a tandem not my son!
The Co motion periscope looks very adjustable. Maybe a longer seat post is all that's needed on that frame. 37inch legs can be a pain sometimes..
Any more ideas welcome

DB

If you consider the Periscope, do not cut steering tube and use an adjustable pilot stem (available from Co-Mo). Have actually fit a couple, he at 6'3" and she at 5'3" who wanted to be able to swap pilot/stoker positions + also be able for either parent to ride with one of the kids.