27in versus 700mm

Pedantus said:

( Dumb question # 99🙂

Will a 700mm wheelset fit an '80's touring frame designed for 27in wheels?

They will certainly fit the frame, because the wheels are smaller.
Whether the brakes will reach is the important question. You may have
to buy long-drop brake calipers or a "drop bolt" to fix it.

Incidentally, the size is called 700c, not 700mm. The 700mm part came
from an obscure French tyre measurement which bears no relation to the
tyres now used on 700c rims.

Pedantus said:

Will a 700mm wheelset fit an '80's touring frame designed for 27in

wheels?

That's a definite maybe. If you currently have 27" wheels installed,
and the brake pads are in the middle of their slots, you may be able to
move them down enough to reach the rim of a 700c wheel. Try it and see.
Odds are about 50/50.

Art Harris

Pedantus said:

Will a 700mm wheelset fit an '80's touring frame designed for 27in

wheels?

The other thing you have to consider is the rear dropout spacing of
your frame. If you have a 5 speed freewheel, your dropouts are 120 mm.
6 and 7 speed FWs/cassettes used 126 mm, and modern 8, 9, or 10 cog
cassettes use 130 mm spacing.

What exactly are you trying to do?

Art Harris

Brake pads will need lowering by 4 mm (if you can), that's all.

~PB

"Art Harris" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Pedantus said:

Will a 700mm wheelset fit an '80's touring frame designed for 27in

wheels?

That's a definite maybe. If you currently have 27" wheels installed,
and the brake pads are in the middle of their slots, you may be able to
move them down enough to reach the rim of a 700c wheel. Try it and see.
Odds are about 50/50.

Thanks, Art. The one's I'm looking are center-pull on bosses (Also, I
somehow thought 700 was bigger than 27...🙁
I am completely clueless about the availability of 27 wheels and
whether on not the 5sp 126mm arrangement can be upgraded to 7 or
better...stuff like that... : |
I just like the '80 something Bridgestone touring frame and wondered
what kind of future it had for replacement wheels and cogsets.

Quoted message said:

Art Harris

Thanks,
Rog

"Pete Biggs" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Brake pads will need lowering by 4 mm (if you can), that's all.

Wow, that's closer than I thought/imagined. And whatdaheck I can
*probably* change brakes a couple of different ways, being that the frame
has stay bosses and the caliper mount...🙂

Quoted message said:

~PB

Rog
<wringing hand unnecessarily, as usual)

"Art Harris" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Pedantus said:

Will a 700mm wheelset fit an '80's touring frame designed for 27in

wheels?

The other thing you have to consider is the rear dropout spacing of
your frame. If you have a 5 speed freewheel, your dropouts are 120 mm.
6 and 7 speed FWs/cassettes used 126 mm, and modern 8, 9, or 10 cog
cassettes use 130 mm spacing.

Oh..OK, IC.....

Quoted message said:

What exactly are you trying to do?

Just wondered if I would be stuck with the 5 speed freewheel, and would
like 7 I guess. I've actually only have worked with 7 speed
freehubs...which I've become fond of over the last 15 years. But I'm really
also drawn to '80 touring frames...moth to a flame, I guess...🙂

Quoted message said:

Art Harris

Rog

Pedantus said:

I am completely clueless about the availability of 27 wheels and
whether on not the 5sp 126mm arrangement can be upgraded to 7 or
better...stuff like that...

Well, you can still get 27" wheels and tires, but your choices are
limited. Check your LBS or see:

http://sheldonbrown.com/harris/wheels.html#630

As for upgrading an old bike (like I did) see:
http://www.sheldonbrown.com/upgrade.html

Art Harris

sheldon brown/harris cyclery has a short piece on adapting the brake
system to the smaller wheel diameter.
the 27" conti TT and pasela thru nashbar are tires enough for 27"
cr-18 rims are in 27"

"Art Harris" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Pedantus said:

I am completely clueless about the availability of 27 wheels and
whether on not the 5sp 126mm arrangement can be upgraded to 7 or
better...stuff like that...

Well, you can still get 27" wheels and tires, but your choices are
limited. Check your LBS or see:

http://sheldonbrown.com/harris/wheels.html#630

As for upgrading an old bike (like I did) see:
http://www.sheldonbrown.com/upgrade.html

Thanks, Art,
I hope you can see this page; it should work:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=7138266478&ssPageName=STRK:MEWA:IT

I was so taken with the photos that I'm afraid I might have paid too much,
dunno. But, the seller says the dropouts measure 126mm, which I'm guessing
should allow some kind of 6 or 7 speed cogs.

As to the availability of future wheel options, I'm glad that it's mostly a
matter of the brake pad position:
http://pedantus.free.fr/T700-Brakes_01.jpg

I bought this T700 because while looking for frames, I see the Surley
frame's cost $425 and they just don't move me for some inexplicable reason.
I'm looking to pick up the pace a little bit when touring, but at a price I
can afford. That and my faithful campcycle frame of 16 yrs. has become aged
from Winter use:
http://pedantus.free.fr/Bike_01.gif

Quoted message said:

Art Harris

Rog

Art Harris said:

"Pedantus" wrote:

Quoted message said:

Quoted message said:

I am completely clueless about the availability of 27 wheels and
whether on not the 5sp 126mm arrangement can be upgraded to 7 or
better...stuff like that...

Quoted message said:

Well, you can still get 27" wheels and tires, but your choices are
limited.

If you call "having a choice" - being able to purchase a gadzillion
different 700x23 tires in a rainbow of colors - all weighing 220 grams
- so long as they are colored/black/700x23/220 grams, then i suppose
your "choices are limited."

However, if you want a 27x1, 27x1 1/8, 27x1 1/4 tire, or a gumwall
tire, then your choices are probably better with 27" tires than with
700c rims !

- Don Gillies
San Diego, CA

Art Harris said:

"Pedantus" wrote:

Quoted message said:

Quoted message said:

I am completely clueless about the availability of 27 wheels and
whether on not the 5sp 126mm arrangement can be upgraded to 7 or
better...stuff like that...

Quoted message said:

Well, you can still get 27" wheels and tires, but your choices are
limited.

some choices :
harris cyclery - lots of nice vintage NOS tires
nashbar - IRC and Panaracer Pasela
performance - house "forte'" brand
kmart/target - generic gum 27x1 1/4 tires from asia

If you call "having a choice" - being able to purchase a gadzillion
different 700x23 tires in a rainbow of candy-cane colors - all
weighing 220 grams - so long as they are colored/black/700x23/220
grams, then i suppose your "choices are limited."

However, if you want a 27x1, 27x1 1/8, 27x1 1/4 tire, or a gumwall
tire, then your choices are probably better with 27" tires than with
700c tires !

- Don Gillies
San Diego, CA

Art Harris said:

"Pedantus" wrote:

Quoted message said:

Quoted message said:

I am completely clueless about the availability of 27 wheels and
whether on not the 5sp 126mm arrangement can be upgraded to 7 or
better...stuff like that...

Quoted message said:

Well, you can still get 27" wheels and tires, but your choices are
limited.

some choices :
harris cyclery - lots of nice vintage NOS tires
nashbar - IRC and Panaracer Pasela
performance - house "forte'" brand
kmart/target - generic gum 27x1 1/4 tires from asia

If you call "having a choice" - being able to purchase a gadzillion
different 700x23 tires in a rainbow of candy-cane colors - all
weighing 220 grams - so long as they are colored/black/700x23/220
grams, then i suppose your "choices are limited."

However, if you want a x25 (1"😉, x28(1 1/8"😉, x32(1 1/4"😉 tire, or a
gumwall tire, then your choices are probably better with 27" tires
than with 700c tires !

- Don Gillies
San Diego, CA

On Tue, 08 Mar 2005 18:47:33 GMT, "Pedantus" <[email hidden]>

may have said:

( Dumb question # 99🙂

Will a 700mm wheelset fit an '80's touring frame designed for 27in wheels?

Maybe.

Some of the older brake calipers have enough reach to work with a
700c. The other issue is whether the dropout spacing will match, but
with a steel frame, that's easily addressed.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

Pedantus said:

( Dumb question # 99🙂

Will a 700mm wheelset fit an '80's touring frame designed for 27in wheels?

Yes and no.
Modern wheels are largely 130mm wide, sometimes 135mm and
although new 700C rims are smaller than your 27-inch
originals, issues also arise regarding brake reach in some
cases. So you need to check both diameter and width.

That being said, it's often a fruitful pursuit, given the
better quality, larger selection and broad tire width
options of 700C equipment. I'd start at a competent LBS
where you might slip a set of wheels into your frame and get
an informed opinion, then advice on the details.

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

Pedantus said:

I was so taken with the photos that I'm afraid I might have paid
too much, dunno. But, the seller says the dropouts measure 126mm, >

which I'm guessing should allow some kind of 6 or 7 speed cogs.

Congratulations! Looks like a 6-speed (probably a freewheel) and a
"half-step plus granny" triple up front.

The frame looks to be in great shape. CrMo steel, nice long wheelbase,
etc. A classic touring geometry. It should be fine as is. Or you might
want to switch to bar end shifters. Good luck with it.

Art Harris

On Tue, 08 Mar 2005 19:26:26 GMT, "Pedantus" <[email hidden]>

Quoted message said:

"Art Harris" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Pedantus said:

Will a 700mm wheelset fit an '80's touring frame designed for 27in

wheels?

That's a definite maybe. If you currently have 27" wheels installed,
and the brake pads are in the middle of their slots, you may be able to
move them down enough to reach the rim of a 700c wheel. Try it and see.
Odds are about 50/50.

Thanks, Art. The one's I'm looking are center-pull on bosses (Also, I
somehow thought 700 was bigger than 27...🙁

The 700c is 8mm smaller in diameter; the wheels will fit, but the
brake pads need to move about 4mm down to fit the smaller wheels.
You said it had center-pulls; if the current ones do not fit then you
can get some long-reach versions.

Quoted message said:

I am completely clueless about the availability of 27 wheels and
whether on not the 5sp 126mm arrangement can be upgraded to 7 or
better...stuff like that... : |

If it is 126mm then a 6 or 7 sp freewheel should fit fine. Or if you
are changing wheels anyway you might consider going to a 7 sp
cassette. Or you could have the frame cold set to 130-135 and
increase your range of choices.

Quoted message said:

I just like the '80 something Bridgestone touring frame and wondered
what kind of future it had for replacement wheels and cogsets.

As long as the frame is in good shape you should be fine.

- rick

On Tue, 08 Mar 2005 22:32:54 -0600, A Muzi <[email hidden]> may

have said:

Pedantus said:

( Dumb question # 99🙂

Will a 700mm wheelset fit an '80's touring frame designed for 27in wheels?

Yes and no.
Modern wheels are largely 130mm wide, sometimes 135mm

I think you missed a decimal point or two there.

Quoted message said:

That being said, it's often a fruitful pursuit, given the
better quality, larger selection and broad tire width
options of 700C equipment. I'd start at a competent LBS
where you might slip a set of wheels into your frame and get
an informed opinion, then advice on the details.

Or, if you have a bike with 700c wheels on it yourself, do a quick
test-fit and see what the prospects look like. After trying this with
my old Bridgestone, I decided to stick with 27", but I rounded up a
used set of aluminum rims to do it with. (They cost me all of $10,
but I had to take the other 25 pounds of Schwinn that they were
attached to as part of the deal.)

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

Werehatrack said:

On Tue, 08 Mar 2005 22:32:54 -0600, A Muzi <[email hidden]> may
have said:

Quoted message said:

Quoted message said:

Modern wheels are largely 130mm wide, sometimes 135mm

I think you missed a decimal point or two there.

Er...I think Andrew was referring to the hub over locknut distance!