You say the motors have 26 Ncm of holding torque. It means that at a distance of 1 cm from the motor axis It can hold a counter force of 26 Newtons (2.5 kilograms aprox). The torque is halved as the distance is doubled, so a 2 cm it will be 1,25 Kg and at 4cm 0.625 kg.
You should read through it. It contains a lot of helpful information for new forum members like yourself.
That post describes why cross posting is bad. This is the text from that sticky post:
Don't cross-post!
We know you are anxious to get an answer to your problem, but re-posting the same question to multiple parts of the forum causes duplicate effort, and divides the focus on your problem. You'll get a better answer if everyone can discuss it in one place. Cross-posting is very annoying; the moderators will delete your extra posts, and you will get a warning. Save all the hassle, and just post the question once. It will be noticed.
If you aren't sure what section to post in (Programming Questions, Electronics, etc.) make a guess. Don't cross post "just in case".
I see that the threads have been merged. I look forward to seeing how your project progresses.
Oh, pics. I like to see pics of the projects. So I am putting in my request now.