Sturmey-Archer and Schwinn Cruiser Questions
#1
Senior Member
Thread Starter
Join Date: Jun 2013
Location: San Diego
Posts: 142
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Likes: 0
Liked 9 Times
in
4 Posts
Sturmey-Archer and Schwinn Cruiser Questions
So, I'm not sure if this should go here, but I've been thinking about making some mods to my Schwinn/Ward hybrid. It started out as a '47 Montgomery Ward girls crusier (New Departure Model D skip-link) with full fenders. I found it in a trash pile during spring move-out back in college 20 years ago. I got it back together, but treated it like crap and broke the frame.
Shortly after that, my friend destroyed the rear hub on his Schwinn cruiser, so I swapped parts over. It was an 80s cruiser, with the BMX-style forks, so the fender only just fit on the front. I rode it like that for most of college, and then held on to it. It's pretty beat at this point.
Since I have another Schwinn that's all original, except for tires and grips, I figured I could mod my other cruiser without worrying about originality.
My brother offered to trade me his blade forks form my BMX-style forks, and I wanted to put on Sturmey-Archer hubs, 5-speed with 90-mm brake in back (XL-RD5(W)) and Dynamo/90-mm brake in front (XL-FDD). From what I've read, the 70mm will be totally adequate, but it's only another $10 for the big brake, and I'm obviously not worried about weight, so I figured I'd have a bit of an indulgence. So here are my questions:
1) Anyone know about rear cog interchangeability? I'd like to keep the skiplink drive, and the current gearing is about right for my direct drive ratio.
2) Will the forks hold up to a drum brake?
3) I'd like a bit more pressure than the balloon tires hold. Are there any other options for tires in the 50-60psi range that have the same width and outside diameter?
4) I'm totally new to LED lights, but I'm pretty sure I want to run them front and rear. Any suggestions?
Thanks!
Shortly after that, my friend destroyed the rear hub on his Schwinn cruiser, so I swapped parts over. It was an 80s cruiser, with the BMX-style forks, so the fender only just fit on the front. I rode it like that for most of college, and then held on to it. It's pretty beat at this point.
Since I have another Schwinn that's all original, except for tires and grips, I figured I could mod my other cruiser without worrying about originality.
My brother offered to trade me his blade forks form my BMX-style forks, and I wanted to put on Sturmey-Archer hubs, 5-speed with 90-mm brake in back (XL-RD5(W)) and Dynamo/90-mm brake in front (XL-FDD). From what I've read, the 70mm will be totally adequate, but it's only another $10 for the big brake, and I'm obviously not worried about weight, so I figured I'd have a bit of an indulgence. So here are my questions:
1) Anyone know about rear cog interchangeability? I'd like to keep the skiplink drive, and the current gearing is about right for my direct drive ratio.
2) Will the forks hold up to a drum brake?
3) I'd like a bit more pressure than the balloon tires hold. Are there any other options for tires in the 50-60psi range that have the same width and outside diameter?
4) I'm totally new to LED lights, but I'm pretty sure I want to run them front and rear. Any suggestions?
Thanks!
#2
Junior Member
Join Date: Jul 2013
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
1. The SA hub use the same three tabbed cog as pretty much every brake hub, so if you still have the cog, it will probably fit.
2. Forks really only become an issue if you were using something from a lightweight road bike. Although the brake is on only one side of the hub, it doesn't apply the twisting torque of a disc brake.
3. Off-hand, I know CST's standard round and square section cruiser tires max out at 65 psi.
2. Forks really only become an issue if you were using something from a lightweight road bike. Although the brake is on only one side of the hub, it doesn't apply the twisting torque of a disc brake.
3. Off-hand, I know CST's standard round and square section cruiser tires max out at 65 psi.
#3
Senior Member
Join Date: Mar 2002
Location: NJ
Posts: 3,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 5 Times
in
4 Posts
Issues I see:
1- the XL-RD5 is spaced at 130. The 70mm, 3speed X-RD3 is spaced at 116mm. That would be an easier fit for your frame.
2- the bladed forks will likely require that you modify the front brake clip,or possibly have to fabricate your own. FWIW, SA does make a few sizes of front clips, but none are flat, for those old-school Schwinns.
3- My experience is that skip-tooth cogs are a bit different from the modern. Some folks have modified the old cogs to fit, but I've never tried this and cannot recommend it. Some folks have also taken modern cogs w/ an even number of teeth and grinded every other tooth off;I personally wouldn't try this, but maybe it's something to look into? If it were my bike, I'd sell the skip-tooth stuff while it's still worth something, and run modern stuff. Have you priced a skip-tooth chain lately?
4- If you do decide to stick with the XL versions, you'll likely want to lace at 2x; with those massive flanges, the spoke angles would be pretty dramatic at 3x.
hth
1- the XL-RD5 is spaced at 130. The 70mm, 3speed X-RD3 is spaced at 116mm. That would be an easier fit for your frame.
2- the bladed forks will likely require that you modify the front brake clip,or possibly have to fabricate your own. FWIW, SA does make a few sizes of front clips, but none are flat, for those old-school Schwinns.
3- My experience is that skip-tooth cogs are a bit different from the modern. Some folks have modified the old cogs to fit, but I've never tried this and cannot recommend it. Some folks have also taken modern cogs w/ an even number of teeth and grinded every other tooth off;I personally wouldn't try this, but maybe it's something to look into? If it were my bike, I'd sell the skip-tooth stuff while it's still worth something, and run modern stuff. Have you priced a skip-tooth chain lately?
4- If you do decide to stick with the XL versions, you'll likely want to lace at 2x; with those massive flanges, the spoke angles would be pretty dramatic at 3x.
hth
#4
Senior Member
Thread Starter
Join Date: Jun 2013
Location: San Diego
Posts: 142
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Likes: 0
Liked 9 Times
in
4 Posts
3- My experience is that skip-tooth cogs are a bit different from the modern. Some folks have modified the old cogs to fit, but I've never tried this and cannot recommend it. Some folks have also taken modern cogs w/ an even number of teeth and grinded every other tooth off;I personally wouldn't try this, but maybe it's something to look into? If it were my bike, I'd sell the skip-tooth stuff while it's still worth something, and run modern stuff. Have you priced a skip-tooth chain lately?
I like the idea of selling stuff. That's kind of novel for me. More likely, it will just get hung from the ceiling of the garage, and in 50 years my grandkids will be rifling through it all asking why Grandpa kept these crappy old bicycle wheels.
I'm guessing you're right, and I'll end up moving to modern chain and sprockets. But for now, the dream is alive!
Now to swap forks first, and then start saving my toy allowance for the hubs!
#5
Senior Member
Join Date: Mar 2002
Location: NJ
Posts: 3,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 5 Times
in
4 Posts
Something else I'd forgot: your bladed forks may well be spaced at 91mm; the SA drum hubs are spaced at 100mm. Again, something you can work around, but it's best to be prepared.
Lucky brake with the frame being spaced at 120mm; likely your frame was a 5speed derailer model...
Lucky brake with the frame being spaced at 120mm; likely your frame was a 5speed derailer model...
#6
Senior Member
Thread Starter
Join Date: Jun 2013
Location: San Diego
Posts: 142
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Likes: 0
Liked 9 Times
in
4 Posts
Yes, I thought they were 110mm.
Some time in the 80s they must have standardized on the wider dropouts, because this bike was originally a coaster brake bike. I still remember when my friend got it new for his birthday.
Some time in the 80s they must have standardized on the wider dropouts, because this bike was originally a coaster brake bike. I still remember when my friend got it new for his birthday.
#7
Senior Member
Thread Starter
Join Date: Jun 2013
Location: San Diego
Posts: 142
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Likes: 0
Liked 9 Times
in
4 Posts
Interesting. I see they come in 26x2.15 and 26X2.35 sizes. Do you know how close each tracks to the classic cruiser tire in size? They seem to be discontinued, so I might have to buy some on closeout.
#8
Senior Member
Join Date: Mar 2002
Location: NJ
Posts: 3,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 5 Times
in
4 Posts
The classic balloon tire is nominally a 2.125"; CSTs in general run a bit small compared to their nominal size, but I do not have any specific measurements for the model in question. A lot of cruiser guys run Fat Franks, which take a lot of pressure, run a true-to-size 2.35", and roll very quickly for their size.
As for the 120mm spcing: that's cool. I've got a new-model Schwinn Heavy Duti with 116mm rear spacing, and most of the older schwinns were 110 with CB or 120mm with derailer, but you're probably right. They possibly needed to streamline porduction methods as the Chicago days drew to a close. Making one frame spec that could support either set-up would make the most sense....
As for the 120mm spcing: that's cool. I've got a new-model Schwinn Heavy Duti with 116mm rear spacing, and most of the older schwinns were 110 with CB or 120mm with derailer, but you're probably right. They possibly needed to streamline porduction methods as the Chicago days drew to a close. Making one frame spec that could support either set-up would make the most sense....
#9
Senior Member
Thread Starter
Join Date: Jun 2013
Location: San Diego
Posts: 142
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Likes: 0
Liked 9 Times
in
4 Posts
<snip>
CSTs in general run a bit small compared to their nominal size, but I do not have any specific measurements for the model in question. A lot of cruiser guys run Fat Franks, which take a lot of pressure, run a true-to-size 2.35", and roll very quickly for their size.
<snip>
CSTs in general run a bit small compared to their nominal size, but I do not have any specific measurements for the model in question. A lot of cruiser guys run Fat Franks, which take a lot of pressure, run a true-to-size 2.35", and roll very quickly for their size.
<snip>
#11
Banned
I'd like to keep the skiplink drive
need a Time machine for Skip link stuff in 2013.. thats long gone into Museum Nostalgia stuff..
Thread
Thread Starter
Forum
Replies
Last Post
Rob Williams
Clydesdales/Athenas (200+ lb / 91+ kg)
5
08-06-11 04:00 PM