Originally Posted by paul_in_toronto
Hmm interesting topics
Im curious about these OSLO bikes, what did they do to exactly Cavernmech? Did you actually have any of their frames?
- 4 sizes 51, 54, 57, 60. Probably with slightly extended seat tube.
- Flat top tubes, no sloping
-polly
What did they do to exactly Cavernmech? OSLO? What dialect of english is this anyways?

4 sizes but not sloping or compact? Sounds like a problem. You will exclude a fair amount of people who fall between these sizes. With the impetus these days on a proper fitting bike, you may want to consider 6 sizes...52-60 cm in 2 cm increments. 3 cm increments sounds a bit much to me.