Gents,
I hesitate do disagree w Mark & others on 250 Maicos but I think yr being a bit unkind to 250 Maicos. I raced a 73 radial fin for about 2yrs in 74-5 (w LTR mods by then) & never found it slow. It sometimes gave the impression of being slow cos of the heavier flywheel effect compared to the jap 250s, & maybe was a bit slower out of corners as a result, but ridden accordingly it & other 250 maicos did very well in the class. Twas very reliable too. Only complaints I had was mediocre (well, pathetic really) front brake & it was a bit heavy for my jockey-sized frame back then.
Interestingly Motorclist Mag did a couple of 250MX comparos tests in late 73 & put them all on the dyno. The Maico had most powerful topend of all euro 250's (including CZ, pursang & VR) & was only just pipped by the elsinore among the jap bikes. Others did have better mid-range tho.
Still a decent race bike in pre75 250 class imho.