what is it about 27" wheeled bikes !

Page may contain affiliate links. Please see terms for details.

tyred

Legendary Member
Location
Ireland
[QUOTE 1862880, member: 45"]I don't understand the difference between 700c, 27" and 28". Some say they're all the same size.[/quote]

27" is 4mm larger radius than 700c. 622mm v 630mm in ERTO

700c can be labelled 28", especially in Germany or Holland but real 28" wheels are what you find on large framed vintage roadsters and are 635mm in ERTO. 635s are the king of tyre sizes and roll majestically on all road surfaces. You haven't lived until you've rode a rod braked roadster.
 

CCMbiker

Member
Location
Canada
[QUOTE 1862880, member: 45"]I don't understand the difference between 700c, 27" and 28". Some say they're all the same size.[/quote]

700c, 27", 28", are not the same size !... some models of 700" are the same size than 28" ... Exemple : 700x35c and 28" are the same size. and the air chamber of a 700 x 35c fits in a 28" tire....
 
I picked up a pair of Mavic GP4s with tubs fitted a couple of years back, but haven't got the nerve to commute on them before getting at least one spare to carry. I've got them fitted to a 1987 Raleigh Road Ace at the moment, and they're so smooth and free rolling I'm looking forward to commuting on them - despite all the scare mongers who say punctures are a nightmare!

I went to work on sprints and tubs for 15 years. Never had a major drama, but it's a trade between less likely to puncture on tubs versus easier to fix a wired-on.
 
I have 27inch tubs that need replacing. Anyone know where I can get some?
 

Paul J

Guest
lol only 9,999 to go reminds me of the old Green Shield stamps.

220px-Green_Shield_stamp.jpg
 
ETRTO/ISO COMMON SIZE DESIGNATION
47-203 - 12 1/2 x 1.75 x 2 1/4 (also 12.5 x 1.75)
54-203 - 12 1/2 x 2.10
57-203 - 12 1/2 x 2 1/4
62-203 - 12 1/2 x 2 1/4 x 1 1/2 (also 12 1/2 x 2 1/4)
47-222 - 11 x 1 3/4
47-254 - 14 x 1.75
37-288 - 350A
44-288 - 14 x 1 3/8 x 1 5/8 (350A)
37-298 - 14 x 1 3/8
47-305 - 16 x 1.75
50-305 - 16 x 1.90
54-305 - 16 x 2.00
57-305 - 16 x 2.125
62-305 - 16 x 2.125
37-340 - 400A
44-340 - 16 x 1 5/8
37-349 - 16 x 1 3/8
40-355 - 18 x 1.50
47-355 - 18 x 1.75 or (18 x 1.75 x 2)
32-357 - 17 x 1 1/4
32-369 - 17 x 1 1/4 (Moulton)
37-387 - 18 x 1 3/8
28-390 - 450 x 28A
37-390 - 450A
37-400 - 18 x 1 3/8
54-400 - 20 x 2 x 1 3/4
28-406 - 20 x 1 1/8
32-406 - 20 x 1.25
35-406 - 20 x 1.30
37-406 - 20 x 1 3/8
40-406 - 20 x 1 .50
47-406 - 20 x 1.75 or (20 x 1.75 x 2)
50-406 - 20 x 1.90
54-406 - 20 x 2.10
57-406 - 20 x 2.125
37-438 - 20 x 1 3/8
28-440 - 500 x 28A
37-440 - 500A (also known as 20 x 1 3/8)
37-451 - 20 x 1 3/8
47-457 - 22 x 1.75
37-490 - 550A (22 x 1 3/8)
28-490 - 550 x 28A
37-501 - 22 x 1 3/8
19-507 - 24 x 3/4
25-507 - 24 x 1.00
47-507 - 24 x 1.75
50-507 - 24 x 1.90
51-507 - 24 x 1.95
75-507 - 24 x 3.00
28-540 - 600 x 28A
37-540 - 24 x 1 3/8
25-559 - 26 x 1.00
32-559 - 26 x 1.30
35-559 - 26 x 1.30
37-559 - 26 x 1.40
40-559 - 26 x 1.50
44-559 - 26 x 1.60
47-559 - 26 x 1.75 (or 26 x 1.75 x 2) (sometimes labelled 26 x 1.85 or 26 x 1.90)
50-559 - 26 x 1.90 (sometimes labelled 26 x 1.95)
51-559 - 26 x 1.95
54-559 - 26 x 2.10 (sometimes labelled 26 x 2.00 or 26 x 2.125)
57-559 - 26 x 2.125 (sometime s labelled 26 x 2.10 or 26 x 2.25 or 26 x 2.30)
60-559 - 26 x 2.35
62-559 - 26 x 2.50
75-559 - 26 x 3.00
19-571 - 26 x 3/4
20-571 - 650 x 20C (26 x 3/4)
22-571 - 26 x 1.00
23-571 - 650 x 23C (26 x 1.00)
47-571 - 26 x 1 3/4
32-584 - 26 x 1 1/2
35-584 - 26 x 1 1/2
37-584 - 26 x 1 1/2 x 1 3/8 (650 x 35B)
40-584 - 26 x 1 1/2 (650B standard)
28-590 - 650 x 28A
35-590 - 26 x 1 3/8 (650 x 35A) or (26 x 1 x 1 3/8)
37-590 - 26 x 1 3/8
40-590 - 650 x 38A
42-590 - 650 x 40A
32-597 - 26 x 1 1/4
37-609 - 27 x 1 3/8 x 1 1/2
18-622 - 700 x 18C
19-622 - 700 x 19C
20-622 - 700 x 20C
22-622 - 700 x 22C
23-622 - 700 x 23C
25-622 - 700 x 25C
28-622 - 700 x 28C (28 x 1 1/8) or (28 x 1 1/8 x 1 5/8)
32-622 - 700 x 32C (28 x 1 1/4) or (28 x 1 1/4 x 1 5/8)
34-622 - 700 x 34C
35-622 - 700 x 35C (28 x 1 3/8 x 1 5/8)
37-622 - 700 x 37C (28 x 1 3/8) or (28 x 1 3/8 x 1 5/8) (sometimes labelled 700 x 35C)
38-622 - 700 x 38C
40-622 - 700 x 40C (28 x 1.50) or (28 x 1 1/2 x 1 5/8) (sometimes labelled 700 x 38C)
42-622 - 700 x 42C (28 x 1.60) (sometimes labelled 700 x 40C)
47-622 - 700 x 47C (28 x 1.75) or (28 x 1 3/4 x 1 /4) (sometimes labelled 700 x 45C)
50-622 - 700 x 50C (28 x 1.90)
25-630 - 27 x 1
28-630 - 27 x 1 1/8
32-630 - 27 x 1 1/4
40-635 - 28 x 1 1/2 (700B Std.)
37-642 - 28 x 1 3/8 (700A)
 
Top Bottom