If a dumb question im sorry....
 

what exactly does this mean;
Tange Double-butted chrome moly forged vertical dropouts w/double eyelets

Tange: a well-respected Japanese tubing manufacturer

double-butted: the downtube and top tube are thicker at both ends than in the middle; the seat tube is thicker at the bottom end than elsewhere

chrome moly: a popular steel alloy with chromium, molybdenum, and other minerals

vertical dropouts: the rear wheel slides downward and out of the frame, instead of forward; the wheelbase is therefore not adjustable, but the chance of the rear wheel skewing in the frame is eliminated

double eyelets: mounting points for mudguards and rear rack

what he said.

Hello Voyageur. that is the Brand and type of tubing used to build your bike (or the one you are looking at. and the type of dropouts. Tange ( you pronounce it with a long A, soft G and silent E) is the name of the tubing manufacture. "double-butted" means that the wall of the tubing is thinker within a few inches of the ends than it is in the middle. this allows them to make the tube and thus the frame both strong and light. 'Chrome Moly' is the materiel the tubing is made of. and alloy of Chromium steel, except for the cheapest older "HiTen or "carbon steel" bikes almost all steel bikes are made with a type of ChromeMoly materiel. the "forged droupouts" means the dropouts were made out of a solid peice of metal that was forged in some mannerbasically a huge press with two molds and they 'hammer' the raw metal stock into shape rather then being cut. " double eyelets" simply means there is two threaded anchor points on each dropout for attaching a rack and or fenders.

does this help?

WOW! that was great thanks!

Taynj? I don't think so. The architect Kenzo Tange was definitely "TAHN-gay" and that's how I've always pronounced it, with no raised eyebrows that I've noticed.

truth. "Tange" most definitely does not rhyme with "flange."

I've heard debate over whether it's TAHN-gey or tahn-gey (seems to be a regional thing from what I've been told) but either one seems to work.

Forged drop outs -- forged castings rather than stamped steel. Generally considered to be superior to stamped steel.