[QUOTE=WavshrdrAlso your weight is incorrect for the 8R25 aka redlabel (high efficiency according to Shimano). It is actually 1550grams.
.[/QUOTE]

Wavshrdr - I pulled the weight off of the Shimano site. They do say it's "about" this weight...I don't exactly understand what that means, but that might explain the difference in your weight, as opposed to what I found at their site.

randya - I AM being a weight weenie, and happily. I haven't ruled out an internal hub nor do I think they are a bad idea, for all the reasons listed in this thread and others. However, rolling weight is a big deal and losing 2 or more lbs from the rotating mass is a huge difference. I currently am running a dual drive on my Twenty. While I'm not planning any changes in the immediate future, I have been thinking of converting my Twenty to a 105 drivetrain. While I know I can't get the weight down anywhere near 20lbs, it currently weighs 32-33 lbs. If I change the drivetrain over to 105 componants and build a lighter set of wheels (I'm also running a 42 spoke front wheel, which is way overbuilt for my style of riding), I can definitely get it south of 30lbs - maybe even 27-28lbs. While this isn't light, It's a whole heck of alot better than 32+lbs. I haven't made up my mind yet.

I have a crescent folder that I currently have set up as a single speed, but would like to change to a multi speed. I will probably go with an internal 7 or 8 speed. It's currently around 24lbs with an all steel front wheel. I figure if I build up a lighter weight front wheel and go with an internal 7 speed shimano hub, I should only pick up an extra 1.5-1.75lbs.

Juan