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27" vs. 700 rims

Old 01-11-12, 06:36 PM
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27" vs. 700 rims

Is there a down side to building a wheelset with 27 x 1 verses 700 x 26 rims?
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Old 01-11-12, 06:40 PM
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Just reduces your tire choices. Still a couple left, but 700c seems to be limitless.
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Old 01-11-12, 06:43 PM
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+1 about tire choices. Also, 700c will provide slightly better clearance for bigger tires and fenders. If you're actually building a rim I can't see a reason to use 27in unless it's for period correctness.
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Old 01-11-12, 06:45 PM
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If you have a 700c frame your 27" tires probably won't clear it.
If you plan on going the other way, your brake calipers may not reach.
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Old 01-11-12, 06:48 PM
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Is there a down side to building a wheelset with 27 x 1 verses 700 x 26 rims?
For my money, the intended use for the bicycle has a lot to do with the choice. For around town errand running, I prefer 27" x 1 1/4. This set-up can be easily made to be darn near bullet proof. I have never had a flat with 27 inchers set up the way I like.

But for any kind of performance considerations, not to mention the greater selection of tires, 700c is indeed the way to go. Will you feel the difference between 700c and 27" x 1? Not unless you are a pretty good rider, and that is, once again, my opinion based on my own experience.
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Old 01-11-12, 07:11 PM
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I prefer 700c, lots of tire choices. I also prefer hub brakes over rim brakes....go figure.

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Old 01-11-12, 07:40 PM
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I downsized my 27" wheels to 700c primarily to be able to fit wider tires. I was able to go from a 27 x 1 1/4 to a 700c x 35. My brakes barely reach, but I also have more fender clearance. I was changing hubs, otherwise I would have stuck with 27".

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Old 01-11-12, 07:51 PM
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The reason the answers are so varied is that it rarely makes much of a difference. The difference in diameter is only 8 mm.
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Old 01-11-12, 07:54 PM
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700c rims are lighter, have better tire options, and allow for a greater range of sizes. I don't see any reason to go with 27" by choice unless modifying the brakes isn't an option.
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Old 01-11-12, 08:10 PM
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One reason to prefer one size over another is that you already have rims, tires, whatever in that size.

I've heard a rumor that 27" rims are cheaper, for no particular reason.
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Old 01-11-12, 08:21 PM
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Well, 27" rims do fit perfectly inside a frame designed around 27" wheels... so there's that. And on a bigger frame, say 60cm and up, I think the extra diameter, small though it is, provides a little extra visual mass to help keep things in proportion.
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Old 01-11-12, 08:24 PM
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Originally Posted by noglider View Post
One reason to prefer one size over another is that you already have rims, tires, whatever in that size.

I've heard a rumor that 27" rims are cheaper, for no particular reason.
I would bet that the reason is there is less demand for new 27in rims. I would only want 27in if I was trying to keep an old bike "correct", which means I would want old rims. You are right that it doesn't make much of a difference. I do think that tire selection is the real deciding factor.
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Old 01-11-12, 08:46 PM
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Originally Posted by mkeller234 View Post
I would bet that the reason is there is less demand for new 27in rims. I would only want 27in if I was trying to keep an old bike "correct", which means I would want old rims. You are right that it doesn't make much of a difference. I do think that tire selection is the real deciding factor.
+1
-But I would advise anyone contemplating spending more money on 700's &/ brakes, to also select better tires than what you can buy for 27's.
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Old 01-11-12, 08:50 PM
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Ha! I suppose that would make sense! I for one never really bought fancy or exclusive tires, cheap vittoria and panaracers in both sizes. I did buy some fancy ones recently. In the future i'll probably continue with cheap tires because I do not have a large bicycle budget.
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Old 01-11-12, 10:27 PM
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Originally Posted by wahoonc View Post
I prefer 700c, lots of tire choices. I also prefer hub brakes over rim brakes....go figure.

Aaron
About moving from 27" to 700, I'm getting ready to convert my 1967 Carlton to 700 wheels and will see how the conversion works out. I'm not putting hub brakes on the Carlton.

Aaron, you need to quit reading my mail!! I, too, love hub brakes. Unfortunately, I've only got one bike with them at this point in time: my Peugeot PX-8.


P1010510 by Sallad Rialb, on Flickr
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Old 01-12-12, 06:32 AM
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I guess I should have included a little more information. My Paramount already has 700 x 26's with small flange Campy hubs. I want to build a nice set of wheels with a pair of Large flange Campagnolo Nuovo Record hubs I've had for some time. The Paramount spec's call for 27x1 or 700C rims. It may not have ever had a set of 27x1" rims on it but I'm not finding a very good selection of 700 rims to use for a new build. I don't know enough about what to look for in rims for my application. I understand there are newer clincher's that have a vintage look but I'm not finding them.

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Old 01-12-12, 07:08 AM
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Originally Posted by silvercreek View Post
newer clincher's that have a vintage look but I'm not finding them.
You should check these brands for a vintage appropriate looking modern rim.

Velo-Orange PBP rims


Grand Bois rims


H+Son TB14
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Old 01-12-12, 07:08 AM
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Try here at Velo Orange.



Too pricey at $78+ for my tastes, but I suppose they are more period correct than the Sun CR18s at about $24+.



For me, they work just fine on a Paramount. And they come in both 27" and 700c.

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Old 01-12-12, 07:44 AM
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Originally Posted by pastorbobnlnh View Post
Try here at Velo Orange.

Too pricey at $78+ for my tastes, but I suppose they are more period correct than the Sun CR18s at about $24+.

For me, they work just fine on a Paramount. And they come in both 27" and 700c.
Yeah, I'm a real CR-18 fan. Like you say, they are not exactly period correct, but at $25 each for a bomb-proof wheel that builds up easily and has a milled brake track, it has convinced me. I have them on my early 1970's Peugeot PX-8 (shown above) and on the rear of my Cannondale Quick CX Rigid. I have two more sets that I am getting ready to build, one set for my 1967 Carlton Super Race and another set for my 1949 Hercules Kestrel.

Of course you could just say never-mind to the bike having nice vintage looking rims and go for some Velocity Deep V rims like on the leader below.


Leader 51cm Complete by Providence Pista, on Flickr

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Old 01-12-12, 08:15 AM
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The SUN M13 II rims are very nice too, slightly narrower that 18's, and come in 27 or 700c. They have a nice look to them, suitable for a Paramount. I like the polished version.
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Old 01-12-12, 08:22 AM
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Originally Posted by silvercreek View Post
Is there a down side to building a wheelset with 27 x 1 verses 700 x 26 rims?
There are 726 threads addressing this very question and all have the same content.
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Old 01-12-12, 08:26 AM
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Originally Posted by ColonelJLloyd View Post
There are 726 threads addressing this very question and all have the same content.
So do we want him to resurrect a zombie thread or start a new one? Methinks I like new threads, plus things change as new products become available so it's not all that inappropriate a question. Also, he later clarified that he was looking for vintage looking rims which he hadn't stated at the outset.
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Old 01-12-12, 08:29 AM
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Originally Posted by rootboy View Post
The SUN M13 II rims are very nice too, slightly narrower that 18's, and come in 27 or 700c. They have a nice look to them, suitable for a Paramount. I like the polished version.
I've seen pictures of them and, yes, it appears they'd be appropriate for that bike, probably even better than the CR-18s.
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Old 01-12-12, 08:34 AM
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Originally Posted by rootboy View Post
The SUN M13 II rims are very nice too, slightly narrower that 18's, and come in 27 or 700c. They have a nice look to them, suitable for a Paramount. I like the polished version.
+1

I'm building a set right now, and for the bike in question, I think the narrower box section is far more appropriate.
I've built CR18's as well, and think they are more suited to bikes taking wider tires (e.g., touring bikes).
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Old 01-12-12, 08:35 AM
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Originally Posted by photogravity View Post
So do we want him to resurrect a zombie thread or start a new one? Methinks I like new threads, plus things change as new products become available so it's not all that inappropriate a question. Also, he later clarified that he was looking for vintage looking rims which he hadn't stated at the outset.
I don't see the issue with adding new content to an old thread. But, I was just suggesting a reading of the numberous threads already on the subject.

Silvercreek, what do you mean by "700 x 26 rim"? A rim to fit a 26-622 tire? A narrow rim will be fine, but I like a wider rim. The current trend is to use a wider rim to approximate the feeling of a tubular.

If you want to stick with 27", then I agree that the polished M13-II is a good bet.

I have built new wheels for classic looking bikes with polished CR-18s and Velo Orange PBP, Diagonale and Raid rims. They all look good, just let your budget and intended tire size determine which you build with.

Sun CR-18



Velo Orange Diagonale



Velo Orange PBP



Velo Orange Raid

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