There are different oh translations, which different speeds make possible, it gives the variant with the short translation to approx.. 65 km/h, the Variaten with the middle translation approx.. 80 km/h and the long translation with 90 km/h.
In order to increase the speed, one can install larger wheels, then I made it. Do you have a photo of your IFA? If, it adjusts nevertheless please times here.
By the way, you find technical data of the W50 here on the homepage (vehicle warrant of apprehension W50 under - http://www.ifa-tours.de/fahrzeug/fahrzeugsteckbrief.htm
