operator

Unfortunately you now lose a point for not reading post #1.

Sixty Fiver

Or he gets a point for showing folks (that don't know) what the Paselas look like...

operator

Which is exactly what the OP asked for, right?

dabac

Well, but it's one of those things when you just don't know. I have a bike that'll happily take either too, but there's been a couple of threads here featuring bikes and riders that haven't been that lucky.

dabac

That wouldn't be too hard. It just might work if you get a narrow single-walled 27" rim, cut it open, and snap it into a wider 700C rim.
Wouldn't do squat for widening the selection of available 27" road tires though.

But what I'd really like to see is the adaptor kit that'd let you mount a 700C tire on a 27" rim.

Maybe it'd be possible to stretch a 700C tubular on to a 27" rim? Has anybody tried?

I'd be rather interested to hear the results of such a test, I've got a set of composite 27" wheels with unhooked rims, and I'd really like to be able to fit some high-pressure tires on them.

FlatTop

This is an interesting idea, but 4mm(?) difference is rather a lot. Maybe with all the spoke tension removed, a slathering of soapy water on the tire bead and the thumbs of Mighty Joe Young, a 700c tire might be squeezed onto a 27" wheel. I'll probably try it, now that it's been mentioned.

DannoXYZ 

While the bead-seat diameter may be only 4mm difference, the height of the sidewalls on a clincher rim prevents you from stretching a tubular tyre enough to install. You'd have to stretch it enough to increase diameter by like 10mm, not gonna happen without damaging the tyre.

moleman76

1) - fixed with an edit, thanks (where is that spell checker when you need it?)

2) - Racers, who are paid to win (or to help their team leader win) are stronger, faster, and more pain tolerant than the rest of us. We buy bikes with skinny tires hoping to become like them, and might be able to go a bit faster on smooth pavement as a result.

The rando folks might have 10 pounds in their handlebar bags, but few will ride with 50 pounds in panniers. For the epic randoneur event, Paris-Brest-Paris, 1200 km in 90 hours or less, the fastest American finisher in 2007 rode on 700x30's and finished in less than 50 hours.

If you want to research the optimization of speed and comfort, as related to tire sizing, do some googling and see what Jan Heine has to share about the topic.

BUT, back to the original poster's question -- nope, there aren't many 27x1" tires or tyres out there. Not even very many 27 x 1-1/4" tires or tyres either.

DannoXYZ 

There is an aero and weight-penalty with larger tyres despite their superior flat and rolling-resistance. However, if you're not averaging 20mph+ and doing hillclimb-TTs, you won't notice the advantages of the smaller tyres.

I noticed K-mart sells a couple of 27x1-1/4" tyres.

mechBgon

In my case, I simply plunked two 700C wheels onto the bike as a reality check. Another easy option would be to use a metric tape measure to see if the brakes have the required 4-5mm of additional brake-pad reach.

dabac

Please do!

I've asked around, and all I've been getting is "no, it cant' be done, and no, I haven't tried it".
And w/o the bits available it's not that easy to predict how things will match up.
I'm assuming that the brake surface of a 700c tubular rim would match up to where the brake surface of a 700c clincher is.
But as the concave portion of a tubular rim is much shallower than the corresponding feature on a clincher rim maybe it won't be that much of a stretch to get a 700c tubular onto a 27" wheel...

operator

This is like every single club ride out there. The only people who toodle slower are possibly people out on weekend excursions who dont' care to go fast and utility cyclists with really ****acular bikes. Don't tell me people never ride around at 30kph besides racers.

planyourfate

Performance Bike has some Forte' GT2 Kevlar Road Tires 27/1. Probably some others but I haven't checked it all.