Spoke Calculator
11-22-09, 09:05 AM
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Spoke Calculator
Anyone know a good spoke calc that will work with older hubs and new rims? I have a NOS set of Chorus 8 sp hubs and an older D/A set of hubs I want to lace to modern rims.
11-22-09, 09:26 AM
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Hello Wylie? hhmmm not sure I have been through there. anyway.. tha only spoke calcu;lator I ever used was the "Wheelsmith" system back in the early '90s. I have seen losts of post on here directing others to different sites. you may have to measure own hubs though and plug in the values. we had to do that for a year or two when 'freehubs' first came out. try the search forum with things like spoke length or wheel buliding.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
11-22-09, 09:32 AM
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The Spocalc spreadsheet has Chorus and Dura-Ace hubs and recent rims. Plus there's the option to enter your own data.
11-22-09, 10:38 AM
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I've used spocalc with old 8s Record/Chorus hubs and 72xx/74xx DA, so I can add relevant experience here.
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11-22-09, 11:02 AM
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A +1 for Spocalc. However it has been my experience that you need to subtract 1-2mm from the length provided.
11-22-09, 12:17 PM
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All Campy and Shimano....and everything else with 39mm front hub flanges and 44/45mm rear flanges take essentialy the same length spoke.
03-14-24, 08:35 AM
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Hello Wylie? hhmmm not sure I have been through there. anyway.. tha only spoke calcu;lator I ever used was the "Wheelsmith" system back in the early '90s. I have seen losts of post on here directing others to different sites. you may have to measure own hubs though and plug in the values. we had to do that for a year or two when 'freehubs' first came out. try the search forum with things like spoke length or wheel buliding.
I wonder if such a thing still exists? It really wouldn't matter the age of components as long as you have all of the dimensions
03-14-24, 08:45 AM
#9
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I’ve had good luck with https://leonard.io/edd/ but I highly recommended seeking multiple sources and double checking all measurements yourself.
Data for current production rims should be easily obtained, a cheap caliper is very good for taking necessary hub measurements .
https://www.harborfreight.com/hand-t...per-63664.html
Data for current production rims should be easily obtained, a cheap caliper is very good for taking necessary hub measurements .
https://www.harborfreight.com/hand-t...per-63664.html
03-15-24, 05:08 AM
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If it's the system you are referencing, I used it as a mechanic back then too. It was a "calculator" and 2 rods to get rim diameter. I had to use calipers to measure all of the hub dimensions. Needed number of holes and cross pattern.
I wonder if such a thing still exists? It really wouldn't matter the age of components as long as you have all of the dimensions
I wonder if such a thing still exists? It really wouldn't matter the age of components as long as you have all of the dimensions
(my pencil used long ago to correct Jobst's maths):
Last edited by oneclick; 03-15-24 at 05:16 AM.
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03-15-24, 06:32 PM
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If it's the system you are referencing, I used it as a mechanic back then too. It was a "calculator" and 2 rods to get rim diameter. I had to use calipers to measure all of the hub dimensions. Needed number of holes and cross pattern.
I wonder if such a thing still exists? It really wouldn't matter the age of components as long as you have all of the dimensions
I wonder if such a thing still exists? It really wouldn't matter the age of components as long as you have all of the dimensions
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
03-16-24, 10:12 AM
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Spocalc 2022 works fine for me with no adjustments if component dimensions are selected from the program lists. Correct info in gets correct info out. Rounding up decimal length has also been best in my experience. I've done several sets of wheels with the 2022 version, all with different hubs and rims. Absolutely no complaint !
I did speak with a gentleman who had problems with it. He calculated for 2x and tried to lace 3x and the spokes were too short.
Have a nice day
Charlie
I did speak with a gentleman who had problems with it. He calculated for 2x and tried to lace 3x and the spokes were too short.
Have a nice day
Charlie
Last edited by Steel Charlie; 03-17-24 at 07:48 AM.
03-16-24, 11:54 AM
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I have had good luck with CD50 Spokcalc and it has an extensive database of rims and hubs.
always good to independently measure ERD
/markp
always good to independently measure ERD
/markp
03-17-24, 06:33 AM
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I think https://spokelengthcalculator.com/ uses the spocalc database but it's in an easier to use format. It has mostly older parts listed. That said, measuring your own hubs and rims is not only easy, but necessary as you can't take anything published for granted. Plus, two people can measure the same hub and rim and they'll get slightly different results. It's usually not enough to change your spoke length though, given your dealing with 1mm or 2mm increments and not cutting them to exact numbers.
I've found that the above calculator, DT and Musson's all give very similar results. Musson has done an about face in his latest update about rounding spokes up or down, so when in doubt I go with DT's recommendation.
I've found that the above calculator, DT and Musson's all give very similar results. Musson has done an about face in his latest update about rounding spokes up or down, so when in doubt I go with DT's recommendation.
03-17-24, 02:37 PM
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I remember a printed card thingy with (two) sliding scales in a kind of envelope with open ends - you used one scale for the rim, another for the hub, and there were some correction factors or notes or something printed on the outer envelope.
A Bike Warehouse item?
A Bike Warehouse item?
03-17-24, 06:07 PM
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It does illustrate one advantage of building a wheel 4x ... it doesn't really matter how big the hub flange is.
Steve in Peoria
03-18-24, 02:51 AM
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