http://www.scorpionsystem.com/catalo...0/HK_7050_340/

There you go, motor problems solved.


I would try and have a look at the motor though, see how fast it ends up going. Maybe could get it all put together and then try it to see if it runs, if the motor struggles then replace it I suppose. The mechanism you've got seems great for the job, and if the motor still turns it, you can always limit the speed if needs be. I'm not so sure though without knowing the specifics... Brushless is always an option too I guess if needs be!