Pardon me if this has been discussed before, but...

I've got an old Peugeot 27"er (early 70s) that needs some, um, "fixin." I'd like to buy a cheap fixed wheelset and give the whole thing a try, but most of the pre-made rims are 700c.

Since 700c frames seem to be a bit more popular-- and since I'm not especially attached to this bike (it's just the bike I have), I've been thinking about just slapping a set of 700c wheels on.

Apart from the rear brake not reaching, are there any issues that'd arise? How does a bike designed for 27 handle when given 700s? The difference in size seems fairly slight.

it will be fine. in fact, the brakes will probably have a long enough reach anyway.

Do it,

Ditch the brakes..

Difference is 4mm. The amount of air in you tires has more affect .

Since the wheelse is circa 70's, the rear wheel is threaded for a freewheel. Did you consider simply slapping a track cog on the current wheel? Cheap and easy. and cheap.

it's fine. i run 700c on a used-to-be 27". ditch the rear brake; front-brake might already have enough reach. if not, there are a few choices out there that will work. i'm running a sweet dia-comp centerpull.