Kel57 said:... I have a hybrid but it is sure to not be strong enough for a 200km trek in 2 days plus all the time needed to work out on it. It is just a great workout bike.
So I am looking for a lighter/faster road bike but don't want to spend a thousand bucks on it.
My question is: Can I purchase a vintage 10 spd and build it up to the bike I would like? In other words, would I be able to change the gears in the back and the cranks in the front to make the bike a 21 spd or better?
Absolutely ...
You can update the components on EITHER a Vintage bicycle OR your Hybrid ...
In the latter case, if the bike has an unnecessary suspension fork, then you would want to replace it with a 'rigid' fork (you can get a removed-from-new-bike steel fork from some tandem-and-touring bikes where the owner immediately updated the fork with a carbon fibre fork). If your Hybrid has a rigid fork, then so much the better.
Does your Hybrid's rear wheel have a Cassette or Freewheel?
Starting with your Hybrid, you can change the handlebars & shifters, and perhaps the saddle ... possibly, the derailleurs & cassette (depending what is currently on the bike, if you are inclined) AND possibly the crankset & BB if you want a ROAD crankset. Change the tires to 700-28 (I'm presuming the Hybrid has 622-17 rims), and you'll be good to go.
I recommend Campagnolo 10-speed shifters + 9-speed SHIMANO cassette ... depending on the largest cog on the cassette, either a 10-speed SHIMANO rear derailleur or a 9-speed Shimano rear derailleur by using the hubbub.com alternate cable attachment at 3 o'clock.
If your Hybrid happens to have an 8-speed cassette, then just get the "drop" handlebars + 10-speed Campagnolo shifters (non-QS are better) ... connect, and you're good to go.
FWIW. Here's a slightly/(barely?) more extreme modification that I made to one of my Hardtail frames than what simply swapping the bars & shifters +/- the fork (if necessary) would be on your Hybrid:
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Some Vintage bikes are better than others, then-and-now. If you don't already have a frame, then it will require more effort than simply updating your Hybrid ... but, not much more effort.
While you can update almost any bike, a bike from the late 70s or early 80s is about as old a bike as you probably want to consider ... frames from before 1980 generally don't have such amenties as water bottle bosses.
IMO, a bike which has 700c wheels is a better choice than one which has 27" wheels unless you are over 6'0" tall.
Frames with British threaded Bottom Brackets are easier to upgrade than most French bikes; and, while most Italian bikes are generally nice, why deal with an Italian threaded BB if you don't have to?
Regardless of the frame you choose to update, the only limitation is your wallet AND your mechanical skills -- the level you will need is modest ... you know, can you change a light bulb into a lamp?
With a Vintage STEEL frame, it's better (IMO) to choose one which has an integrated derailleur hanger ...
You can easily respace a steel frame which has 126mm rear dropout spacing to 130mm ... doing so will allow you to use almost any contemporary wheelset. Respacing is done by using ONLY your upper body strength ... aligning the derailleur hanger does require some scrap wood + a pipe wrench AND some patience (i.e., tweaking with a minimal amount of force, checking, repeating).
BTW. The TREK 1000 which OldGoat has found on eBay probably dates from the mid-80s (possibly, the early-90s). Nice frame, but it undoubtedly has 126mm rear spacing (which cannot be changed since the frame is aluminum) ... and, some people hate downtube shifters ...
BTW2. Your Hybrid frame is probably more robust than most Road frames.