Originally Posted by
ScottRiqui
I see a lot of posts here where someone will post a picture of a bike or a frame without saying what size it is, and other people will say something like "Oh, I'd buy that if it were a little bigger/smaller," or they'll just somehow just know the size outright. How are you doing that - is it just experience?
If I'm browsing through pictures on Craigslist or eBay, I look at how much space there is between where the top and down tubes join the head tube, but other than that I have no clue how to estimate the size. Are there other tips/tricks?
...I once drove all the way to Merced and back to look at a 58cm Paramount that turned out to be a 21" frame, even after I asked the guy to measure it. So I always ask the current owner, and then I don't count on getting correct information. I want to measure the top tube length and the stem to saddle distance as currently configured anyway, so while I can sort of get a feeling from a photo, I don't count on my feeling being correct either.
The tip is to bring along a tape measure.