3 ms·
Estes black powder motors are in fact end-burners: https://farm8.staticflickr.com/7457/12472921013_aa92200267_k.jpg https://farm8.staticflickr.com/7457/1247292
by dTal 6y ago
Estes black powder motors are in fact end-burners:
https://farm8.staticflickr.com/7457/12472921013_aa92200267_k.jpg https://farm8.staticflickr.com/7457/12472921013_aa92200267_k...