As you say 27 x 1/14" wheels are a bit bigger than 700C wheels.
It could be more complicated than that !
27" Tyres are hard to get now and 700C tyres won't fit on the rim properly ( at least that's my experience with Conti ultra gaitors)
If you are using a free wheel rather than a cassette type cluster of rear cogs there will be the issue of OLN ( over lock nut) rear wheel dimensions as there may be a 7 or 8mm difference there.
The other issue is if the brake calipers will allow enough adjustment to place the brake blocks properly on the rim braking surface.
Having tried this twice now and wishing I had not , my advice would be get a 700c wheel if you can. It could cost you around £20 to £25 and will save you a lot of grief.
However try it in the frame and see, it may just work !
As you say 27 x 1/14" wheels are a bit bigger than 700C wheels.
It could be more complicated than that !
27" Tyres are hard to get now and 700C tyres won't fit on the rim properly ( at least that's my experience with Conti ultra gaitors)
If you are using a free wheel rather than a cassette type cluster of rear cogs there will be the issue of OLN ( over lock nut) rear wheel dimensions as there may be a 7 or 8mm difference there.
The other issue is if the brake calipers will allow enough adjustment to place the brake blocks properly on the rim braking surface.
Having tried this twice now and wishing I had not , my advice would be get a 700c wheel if you can. It could cost you around £20 to £25 and will save you a lot of grief.
However try it in the frame and see, it may just work !
Regards Allister