For the love of English 3 speeds...
Abuse Magnet
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I'm going off on a bit of a tangent here, but in the case of old rims like @agmetal has where there's no published data, could the ERD be calculated from a formula that uses the distance between spoke holes (which yes, would need to be a very accurate measurement) and the number of spokes? I'm sure it could be done, but I don't remember enough trigonometry to figure out the formula.
@Scooper posted this awhile back and it's foolproof.
https://www.bikeforums.net/bicycle-me...ml#post6364862
Well maybe you could mess it up but you always have to take a few samples, rims are often out of round. This has worked for me several times.
Last edited by clubman; 05-10-16 at 07:34 PM.
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That's similar to a suggestion I saw on the Spocalc website. Not hard to do (once I have the parts in hand), but I'll admit to being lazy and hoping someone had the numbers worked out already
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The 28 inch Westwood rim was a common design. If you're sure that you are getting another set, you may want to buy the rims first, and then see if you can get the original spokes to work by first comparing the rims, then (if they are very close) trying to build the wheel. Replace the elliptical nipple washers if they are rusted (they often rust).
Absolutely common: the two most broken parts on those 1970s-era shifters are (1) the plastic window and (2) the flat spring that holds the gear lever in place. I've seen plenty of shifters break one or both of those parts. Neal is a real gentleman. He's helped me find a couple odds and ends for bikes over the years.
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Classic American and British Roadsters, Utility Bikes, and Sporting Bikes (1935-1979):
https://bikeshedva.blogspot.com/
Classic American and British Roadsters, Utility Bikes, and Sporting Bikes (1935-1979):
https://bikeshedva.blogspot.com/
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That chart is awesome, any idea what year it's from?
I'm planning to scratch-build a front wheel around a Dynohub. For the rear, I'll be building a new wheel around the original K hub...anyone know if that's the same dimensions as the AW?
I'm planning to scratch-build a front wheel around a Dynohub. For the rear, I'll be building a new wheel around the original K hub...anyone know if that's the same dimensions as the AW?
Abuse Magnet
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@agmetal
@Scooper posted this awhile back and it's foolproof.
https://www.bikeforums.net/bicycle-me...ml#post6364862
Well maybe you could mess it up but you always have to take a few samples, rims are often out of round. This has worked for me several times.
@Scooper posted this awhile back and it's foolproof.
https://www.bikeforums.net/bicycle-me...ml#post6364862
Well maybe you could mess it up but you always have to take a few samples, rims are often out of round. This has worked for me several times.
base=distance between adjacent spoke holes in mm
n=number of spokes
erd=(2*base)/(2*cos(180/n))
I tested the equation on a couple different wheels (20"x36h and 26"x32h) and the results were close, but not exact. Like I said, the measurement between the spoke holes would have to be extremely accurate, because any error is going to get amplified coming out the other end.
So, in theory, this equation works, but in reality it's probably not practical to use.
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My idea was mostly just an exercise...I'm not sure how practical it is. This is what I came up with:
base=distance between adjacent spoke holes in mm
n=number of spokes
erd=(2*base)/(2*cos(180/n))
I tested the equation on a couple different wheels (20"x36h and 26"x32h) and the results were close, but not exact. Like I said, the measurement between the spoke holes would have to be extremely accurate, because any error is going to get amplified coming out the other end.
So, in theory, this equation works, but in reality it's probably not practical to use.
base=distance between adjacent spoke holes in mm
n=number of spokes
erd=(2*base)/(2*cos(180/n))
I tested the equation on a couple different wheels (20"x36h and 26"x32h) and the results were close, but not exact. Like I said, the measurement between the spoke holes would have to be extremely accurate, because any error is going to get amplified coming out the other end.
So, in theory, this equation works, but in reality it's probably not practical to use.
Hey, I got 91 in Functions and Equations but can't remember a bloody thing. Even if I see a published ERD on a well known rim, I measure. It really doesn't take any time to do once you customize a couple of spokes.
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Not a 3 Speed but Worth a Look
This Raleigh built Eatons Glider 5 speed showed up on Kijiji last week and sold within minutes.
It's actually a re branded Carlton Corsa.
The distinctive "C" nuts and chromed forks give it away. Originally equipped with those mini-fenders.
This Raleigh built Eatons Glider 5 speed showed up on Kijiji last week and sold within minutes.
It's actually a re branded Carlton Corsa.
The distinctive "C" nuts and chromed forks give it away. Originally equipped with those mini-fenders.
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@arex, you can download the spocalc.xls spreadsheet. I think the formula for spoke length is in one cell, and you can read it. It's bigger than your formula.
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FWIW, its arguable that the original design from which the DL-1 derives was the world's first mountain bike. Much of the 3rd world's mail was delivered on such machines, on single-track in the middle of nowhere (or at least so close, you could see it from there).
Take a close look at the images in the background on the home page of the Tour Divide site. They are 3-speed rod brake machines, apparently doing a bit of bikepacking.
Take a close look at the images in the background on the home page of the Tour Divide site. They are 3-speed rod brake machines, apparently doing a bit of bikepacking.
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I use cream Schwelbes myself. Delta Cruiser, 40-635, Creme, Wired | Schwalbe North America
Abuse Magnet
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@arex, you can download the spocalc.xls spreadsheet. I think the formula for spoke length is in one cell, and you can read it. It's bigger than your formula.
Like I said, it was just an exercise to see if it was feasible or even possible to calculate the ERD from the spacing between spokes.
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I use cream Schwelbes myself. Delta Cruiser, 40-635, Creme, Wired | Schwalbe North America
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Otherwise, no worries.
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Oops. I was hasty and therefore misunderstood you. Sorry about that.
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Tom Reingold, tom@noglider.com
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“When man invented the bicycle he reached the peak of his attainments.” — Elizabeth West, US author
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I've never had to wash them, after about 2 weeks of riding they got a bit of a patina that matched the age of the bike nicely, and they really have not gotten any worse.
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I need a little help putting lipstick on this pig. I bought this Sports for cheap a while back simply for the rear hub. I stripped it and hung it in the rafters until medical issues had me so bored that I decided to work on it.
I cleaned it up a bit and then had more issues, so it sat in this state for a while.
Finally, I am back to normal (or the new normal) and want to finish this project. The problem is that it came with no fenders or chain guard. I am not too concerned with the chain guard, but would like to have fenders (unless I go totally path racer with it). Here are my options:
Silver SKS that will fit. They look pretty good.
Rusty silver Raleigh fenders. They will fit perfectly, but the bad paint on the bike is root beer. BTW, there is also a rusty silver chain guard to match.
A pair of dark red/maroon fenders that will fit with a bit of work, and sorta work with the crusty, rusty, dusty paint remnants.
Here it is without fenders.
I'll change the handlebar and stem back to the original when they are cleaned up. I have had my eye on a Velo Orange chain guard though...
And yes, there is no rear brake cable right now
I cleaned it up a bit and then had more issues, so it sat in this state for a while.
Finally, I am back to normal (or the new normal) and want to finish this project. The problem is that it came with no fenders or chain guard. I am not too concerned with the chain guard, but would like to have fenders (unless I go totally path racer with it). Here are my options:
Silver SKS that will fit. They look pretty good.
Rusty silver Raleigh fenders. They will fit perfectly, but the bad paint on the bike is root beer. BTW, there is also a rusty silver chain guard to match.
A pair of dark red/maroon fenders that will fit with a bit of work, and sorta work with the crusty, rusty, dusty paint remnants.
Here it is without fenders.
I'll change the handlebar and stem back to the original when they are cleaned up. I have had my eye on a Velo Orange chain guard though...
And yes, there is no rear brake cable right now
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Rusty silver fenders will look better and will clean up better then expected.
Glad to hear you are improving.
Glad to hear you are improving.
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^^^ +1
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If you have steel rims, light colored tires will gain a patina/be self cleaning like others have said. HOWEVER, if you have aluminum rims and ride in wet weather, the tires WILL pick up some of that nasty black "brake dust" you get from rim wear.
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Yes, the mid 80s Schwinn Collegiate was a decent Taiwanese machine and NOT a K-Mart/Walmart offering. Schwinn was still a decent quality (if a little behind) bike shop brand in the 80s. I had one of these Collegiates and they were solid bikes.
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Hello,
i have a problem or several regarding my Raleigh supposed to be a DL1, from appx. 1979/80 (mark on the SA hubs is 79). It has a "Tourist-S" lettering on the all-enclosing chain gearcase. Someone here said it could be an export model. It has SA brake drums 90 mm front and aft.
Despite its good looks all bearing shells were pitted, so i ordered a lot of parts and began to unmount the hubs, which is when i began to suspect the former owner had mounted some parts in the wrong way, and order.
1. is there an exploded view of how the order of assembly of shims and nuts is on the front and rear axle. I know it should be self-describing and easy, but frankly i am not used to this kind of assembly. There are lots of shims and thicker rings, along with thinner and wider nuts.
It seems every of the four hub/axle ends is somehow different.
2. The rear gear hub does only work in gears 2 and 3, not 1. Cannot shift down properly, and i suspect it has to do something with the length of the axle stub, on the right (rear, of course) side. Which brings me to question 1.
Thanks,
Kai
i have a problem or several regarding my Raleigh supposed to be a DL1, from appx. 1979/80 (mark on the SA hubs is 79). It has a "Tourist-S" lettering on the all-enclosing chain gearcase. Someone here said it could be an export model. It has SA brake drums 90 mm front and aft.
Despite its good looks all bearing shells were pitted, so i ordered a lot of parts and began to unmount the hubs, which is when i began to suspect the former owner had mounted some parts in the wrong way, and order.
1. is there an exploded view of how the order of assembly of shims and nuts is on the front and rear axle. I know it should be self-describing and easy, but frankly i am not used to this kind of assembly. There are lots of shims and thicker rings, along with thinner and wider nuts.
It seems every of the four hub/axle ends is somehow different.
2. The rear gear hub does only work in gears 2 and 3, not 1. Cannot shift down properly, and i suspect it has to do something with the length of the axle stub, on the right (rear, of course) side. Which brings me to question 1.
Thanks,
Kai
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Hello,
i have a problem or several regarding my Raleigh supposed to be a DL1, from appx. 1979/80 (mark on the SA hubs is 79). It has a "Tourist-S" lettering on the all-enclosing chain gearcase. Someone here said it could be an export model. It has SA brake drums 90 mm front and aft.
Despite its good looks all bearing shells were pitted, so i ordered a lot of parts and began to unmount the hubs, which is when i began to suspect the former owner had mounted some parts in the wrong way, and order.
1. is there an exploded view of how the order of assembly of shims and nuts is on the front and rear axle. I know it should be self-describing and easy, but frankly i am not used to this kind of assembly. There are lots of shims and thicker rings, along with thinner and wider nuts.
It seems every of the four hub/axle ends is somehow different.
2. The rear gear hub does only work in gears 2 and 3, not 1. Cannot shift down properly, and i suspect it has to do something with the length of the axle stub, on the right (rear, of course) side. Which brings me to question 1.
Thanks,
Kai
i have a problem or several regarding my Raleigh supposed to be a DL1, from appx. 1979/80 (mark on the SA hubs is 79). It has a "Tourist-S" lettering on the all-enclosing chain gearcase. Someone here said it could be an export model. It has SA brake drums 90 mm front and aft.
Despite its good looks all bearing shells were pitted, so i ordered a lot of parts and began to unmount the hubs, which is when i began to suspect the former owner had mounted some parts in the wrong way, and order.
1. is there an exploded view of how the order of assembly of shims and nuts is on the front and rear axle. I know it should be self-describing and easy, but frankly i am not used to this kind of assembly. There are lots of shims and thicker rings, along with thinner and wider nuts.
It seems every of the four hub/axle ends is somehow different.
2. The rear gear hub does only work in gears 2 and 3, not 1. Cannot shift down properly, and i suspect it has to do something with the length of the axle stub, on the right (rear, of course) side. Which brings me to question 1.
Thanks,
Kai
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Hello BigChief,
thanks, i get lots of pictures but none exactly corresponds with my kind of hub, also the Hub interior and end nuts of the hub itself are shown, but not how it is built into the frame/dropouts. Will make some potos when i'm home..
Kai
thanks, i get lots of pictures but none exactly corresponds with my kind of hub, also the Hub interior and end nuts of the hub itself are shown, but not how it is built into the frame/dropouts. Will make some potos when i'm home..
Kai