Originally Posted by
djedgar
for comfort and off-roadability, I highly recommend a Ventana suspension tandem. I was amazed at the places we could go and things we could ride up and down with our Ventana ECDM. So much more than with our hardtail Cannondale mtn tandem.
I highly recommend contacting Alex at
MTB Tandems | Website for some advice on equipment.
Although I agree that the Ventana ECDM is likely the best tandem mountain bike made (we've owned two), it MIGHT not be the right tool for this job (i.e. GDMT). I only say this based on what I've read. I have no first hand experience riding GDMT.
That said, if you are buying a new bike, there is not a better place to start than mtbtandems.com.
We have bought more than a few bikes/frames via Alex and cannot say enough about his customer service!!