If you are still looking at this web site you might want to check out the link below.http://www.keithwalkingfloor.com/docume ... er_SAE.pdf
On the second page of the flyer, it shows the unloading speed for our RFII unloading system. It takes about three minutes to unload a 45 ft (13.5 meter) trailer. In most cases, that is more than faster enough. And certainly faster than you are unloading.
Our RFII system has been capable of high performance/high speed unload for over 20 years. It a matter of oil flow and frame structure. Make sure you buy the right system.
I hope this helps.