28 inches: 635 *and* 622
#1
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
28 inches: 635 *and* 622
I've got a (rod brake, single speed) roadster bike with 28 inch wheels. I wanted to put a 3 speed coaster hub on it, so yesterday I bought a replacement rear wheel. Unfortunately it's not the size I thought I was getting, as 28 inches can apparently mean either 635mm or 622mm. So now I'm wondering: should I set up my bike with the 622 wheel? Is it a problem having a 635 in front and a 622 in back? Also, would the bike ride worse with the smaller 622?
#2
www.theheadbadge.com
Join Date: Sep 2005
Location: Southern Florida
Posts: 28,513
Bikes: https://www.theheadbadge.com
Mentioned: 124 Post(s)
Tagged: 0 Thread(s)
Quoted: 2422 Post(s)
Liked 4,393 Times
in
2,092 Posts
#3
Palmer
Join Date: Mar 2007
Location: Parts Unknown
Posts: 8,621
Bikes: Mike Melton custom, Alex Moulton AM, Dahon Curl
Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 1666 Post(s)
Liked 1,818 Times
in
1,057 Posts
Tire size tutorial:
https://www.sheldonbrown.com/tire-sizing.html
17" wheels are larger than 18" wheels.
tcs
https://www.sheldonbrown.com/tire-sizing.html
17" wheels are larger than 18" wheels.
tcs
#4
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The problem with my old wheel is that it's a 40 spoke wheel. So I'd need to find a new 635mm rim with 36 holes, and finding anything 635mm is hard in the US.
Will it actually look ridiculous? I guess I'm just not sure how noticeable the 1.3cm difference in diameters (that's what 635 and 622 refer to, no?) is going to be (visually or in riding it).
Will it actually look ridiculous? I guess I'm just not sure how noticeable the 1.3cm difference in diameters (that's what 635 and 622 refer to, no?) is going to be (visually or in riding it).
#5
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
@Tcs: I found that exact page when trying to figure out how my old tire didn't fit the new rim. It is quite helpful; I see how we came to misunderstand eachother.
#6
Really Old Senior Member
The 635MM wheel is about 1/2" difference in diameter.
I wouldn't even notice that on another bike!
"FAT" 622 tires are called 29's!
Assuming your 28's are 635x 1-1/2", that would be a 37MM "thick" tire.
a 622x 41MM would theoretically be the same OD.
Does the bike have a rear brake that has to match rim diameter? If so, that would be a bigger issue to me.
I wouldn't even notice that on another bike!
"FAT" 622 tires are called 29's!
Assuming your 28's are 635x 1-1/2", that would be a 37MM "thick" tire.
a 622x 41MM would theoretically be the same OD.
Does the bike have a rear brake that has to match rim diameter? If so, that would be a bigger issue to me.
#7
Senior Member
Join Date: Dec 2005
Posts: 17,156
Mentioned: 481 Post(s)
Tagged: 0 Thread(s)
Quoted: 3810 Post(s)
Liked 6,690 Times
in
2,610 Posts
If you adjust the fender line (the way the fender hugs the radius of the wheel), it'll look fine. That'll mean putting in a 1cm or so spacer where your fender connects to the chainstay bridge. And, of course, you won't be able to use your rear rod brakes (and might have to remove the pads, too), but the coaster brake should render them moot. If you already have the wheel, it's certainly worth a try.
Neal
Neal
#8
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The rear brake is a stirrup type rod brake. I think I can get it to match by making part of the rod a little longer, but if I can't it's easy to remove and there's a coaster on the hub (and the rear brake has never been great anyways: steel rims, long mechanical linkage with a good amount of flex, no mechanical advantage, ...).
The current tires are 2 by 1 1/2. Getting a wider tire for the rear wheel to bring it up to closer to the same size would make sense.
The current tires are 2 by 1 1/2. Getting a wider tire for the rear wheel to bring it up to closer to the same size would make sense.
#9
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
If I do keep this new rear wheel, one upside would be that is it a much more common size.
#10
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Alright; off to the bike shop to get a new rear tire. Then home to put it on.
Thanks for the advice.
Thanks for the advice.
#11
Uber Goober
Sell the bike, buy one with a coaster brake. That's the easy way. I've been watching for a good rod-brake bike for cheap, and haven't seen any- would hate to see one get converted to something else.
(As far as I know, the rod brake won't work with newer rim profiles, so not only do you get the coaster brake, you ruin your rod brakes.)
(As far as I know, the rod brake won't work with newer rim profiles, so not only do you get the coaster brake, you ruin your rod brakes.)
__________________
"be careful this rando stuff is addictive and dan's the 'pusher'."
"be careful this rando stuff is addictive and dan's the 'pusher'."
#13
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I put the wheel on yesterday morning. A little work dealing with the chain guard, but aside from that everything was great. You can't really see the difference in wheel sizes and I was able to adjust the rear rod brake to fit the smaller rim. Nice thing about rod brakes -- they're so simple you can make them do what you want. (The new wheel has a westwood profile).
Three gears, 186% range, and a coaster brake.
Three gears, 186% range, and a coaster brake.
#14
www.theheadbadge.com
Join Date: Sep 2005
Location: Southern Florida
Posts: 28,513
Bikes: https://www.theheadbadge.com
Mentioned: 124 Post(s)
Tagged: 0 Thread(s)
Quoted: 2422 Post(s)
Liked 4,393 Times
in
2,092 Posts
#15
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Doesn't exist? I think I've got one. The people at the dutch bicycle company <https://www.dutchbikes.us> where I got it told me it was a stainless steel "german made regita" rim, and it really looks like a westwood profile. I'll double check tomorrow morning.
I've looked at pictures of westrik rims, and it doesn't look like that to me.
I've looked at pictures of westrik rims, and it doesn't look like that to me.
#16
www.theheadbadge.com
Join Date: Sep 2005
Location: Southern Florida
Posts: 28,513
Bikes: https://www.theheadbadge.com
Mentioned: 124 Post(s)
Tagged: 0 Thread(s)
Quoted: 2422 Post(s)
Liked 4,393 Times
in
2,092 Posts
They didn't happen to offer 28" rims not laced, by any chance?
-Kurt
#17
Bicycle Repair Man !!!
One of these things is not like the other...
The front wheel is an English 28 (635) while the rear is a Canadian 28 (622)... the original wheel is in the front.
The front wheel is an English 28 (635) while the rear is a Canadian 28 (622)... the original wheel is in the front.
#18
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Kurt: looking at my bike now, turns out you're right -- westrik after all.
#19
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
More details on the rim: it's a "regida", not a "regita". It's westrick pattern, stainless steel, 622mm, 36 hole.
Now to look for a 622/700c for the front so I can buy studded tires and not wipe out on ice.
Now to look for a 622/700c for the front so I can buy studded tires and not wipe out on ice.
#20
Member
Join Date: Sep 2008
Location: Lincoln Heights
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Thanks for posting the info above regarding ISO 635 rims.
I've been emailing a friend in Delhi to arrange for some Westwood and Westrick rims to be mailed to me!
I think ordering from Europe (or the Dutch Bicycle Company) might be a better choice, if they've got what I need.
Thanks again!
I've been emailing a friend in Delhi to arrange for some Westwood and Westrick rims to be mailed to me!
I think ordering from Europe (or the Dutch Bicycle Company) might be a better choice, if they've got what I need.
Thanks again!
Last edited by ubrayj02; 11-03-08 at 03:44 AM. Reason: First version was lame.
#21
Senior Member
Thread Starter
Join Date: Oct 2008
Location: medford ma
Posts: 250
Bikes: flying pigeon roadster
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
As for the dutch bicycle company, when I asked if they could get me an ISO 635 wheel (instead of ISO 622) they said something like "we can, but it will have to come from europe, take weeks, and cost twice as much".
I've been pretty happy with my 622 rims (I bought a ISO 622 westrick front wheel from them too, with a Sturmey Archer X-FDD hub) so far, though. They're almost as large, I can run standard 700c tires (which means I can get studs), and they're stainless steel instead of chromed. You might want to consider buying 622s.
I've been pretty happy with my 622 rims (I bought a ISO 622 westrick front wheel from them too, with a Sturmey Archer X-FDD hub) so far, though. They're almost as large, I can run standard 700c tires (which means I can get studs), and they're stainless steel instead of chromed. You might want to consider buying 622s.