First time wheel building and need some clarification
07-30-17, 04:18 PM
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First time wheel building and need some clarification
I need some help since I haven't built a wheel before.
So, I used kstoerz.com and calculated for:
rear hub(32H) 3 lace: 267.8mm spoke length
front hub(32H) 3 lace: 268mm spoke length
Should I round up the rear 267.8mm to 268mm? Do I need to get the spokes with a customized cut or will it fit within the tolerance.
Also,
Should I go with 2 lace pattern for front wheel to reduce weight? It's for a road bike.
hubs are formula th-50/51 and velocity b43
So, I used kstoerz.com and calculated for:
rear hub(32H) 3 lace: 267.8mm spoke length
front hub(32H) 3 lace: 268mm spoke length
Should I round up the rear 267.8mm to 268mm? Do I need to get the spokes with a customized cut or will it fit within the tolerance.
Also,
Should I go with 2 lace pattern for front wheel to reduce weight? It's for a road bike.
hubs are formula th-50/51 and velocity b43
07-30-17, 04:25 PM
#2
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.2mm! Of course round up. That's .008".
You have a "multi" wall rim, so you don't have to worry about popping tubes wirh spoke ends.
In addition, you have a couple more turns when the spoke end is at the bottom of the nipple slot.
Weight saving is something like 1/2 spoke.
Although, when I build MY next front, I plan on doing 2X just because I haven't before. (and 1/2 spoke weigh reduction)
I assume it's a rim brake application?
You have a "multi" wall rim, so you don't have to worry about popping tubes wirh spoke ends.
In addition, you have a couple more turns when the spoke end is at the bottom of the nipple slot.
Weight saving is something like 1/2 spoke.
Although, when I build MY next front, I plan on doing 2X just because I haven't before. (and 1/2 spoke weigh reduction)
I assume it's a rim brake application?
Last edited by Bill Kapaun; 07-30-17 at 04:36 PM.
07-31-17, 11:57 AM
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.2mm! Of course round up. That's .008".
You have a "multi" wall rim, so you don't have to worry about popping tubes wirh spoke ends.
In addition, you have a couple more turns when the spoke end is at the bottom of the nipple slot.
Weight saving is something like 1/2 spoke.
Although, when I build MY next front, I plan on doing 2X just because I haven't before. (and 1/2 spoke weigh reduction)
I assume it's a rim brake application?
You have a "multi" wall rim, so you don't have to worry about popping tubes wirh spoke ends.
In addition, you have a couple more turns when the spoke end is at the bottom of the nipple slot.
Weight saving is something like 1/2 spoke.
Although, when I build MY next front, I plan on doing 2X just because I haven't before. (and 1/2 spoke weigh reduction)
I assume it's a rim brake application?
custom cuts at a bike shop looked pretty expensive but I only checked one shop
I would love to mount brakes of course so I'll mount some rim brakes but guess it will scrape off some paint
07-31-17, 12:11 PM
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Just get 268mm and build them all 3x.
That will make your life much easier and it is very normal for fixed wheels with large flange hubs to be 3x front and rear.
07-31-17, 12:34 PM
#6
Calamari Marionette Ph.D
Custom cuts********************??
For .2mm ********************??
LOL
For .2mm ********************??
LOL
07-31-17, 04:33 PM
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07-31-17, 04:41 PM
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07-31-17, 07:23 PM
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IKR? That's like less than an eighth of a turn on the nipple.
I would wager if you actually did order custom cut 167.8mm spokes, you wouldn't be able to tell them apart from the stock 168mm spokes.
07-31-17, 07:51 PM
#11
Really Old Senior Member
Worrying about .2mm is like worrying about how many kernals of pop corn are in your bucket.
08-01-17, 04:10 AM
#12
Senior Member
The OP states that this is their first wheel build. The difference of .2mm in spoke length, in their mind may be a do or die situation. They don't know, that's why they asked. None of us were born with this knowledge, we ALL have to learn. Snarky comments are not helping them.
Last edited by migrantwing; 08-01-17 at 04:13 AM.
08-01-17, 07:57 AM
#13
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The OP states that this is their first wheel build. The difference of .2mm in spoke length, in their mind may be a do or die situation. They don't know, that's why they asked. None of us were born with this knowledge, we ALL have to learn. Snarky comments are not helping them.
08-01-17, 09:54 AM
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The OP states that this is their first wheel build. The difference of .2mm in spoke length, in their mind may be a do or die situation. They don't know, that's why they asked. None of us were born with this knowledge, we ALL have to learn. Snarky comments are not helping them.
Those spoke calculator programs should recommend which way to round so people don't think that last digit is so critical.
08-02-17, 08:25 AM
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Spoke calculator programs should automatically round because spokes come in whole number lengths. Frankly, they aren't justified in measuring out to 4 significant figures (different from decimal places) in the first place. It's not that accurate a measurement in the first place.
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08-03-17, 11:42 AM
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Hello,
very good and thank you
I am from Nepal
My name is apanee maan ek veshya hai
it is very hot so I wonder if expanding metal and space-time curve can affect my rolling resistance
god bless
08-03-17, 01:35 PM
#17
Really Old Senior Member
I have the Park spoke gauge-
SBC-1 Spoke, Bearing, and Cotter Gauge | Park Tool
I'd have a hard time reading .5 increments consistently on the SAME spoke. Less than that would be lost in the "noise".
Spoke ends aren't always cut "square". That alone could easily account for .2mm.
IF your spoke ends up slightly too long, you can grind/file off a bit. I've done that a few times on cheap wheels when I didn't have the correct length.
SBC-1 Spoke, Bearing, and Cotter Gauge | Park Tool
I'd have a hard time reading .5 increments consistently on the SAME spoke. Less than that would be lost in the "noise".
Spoke ends aren't always cut "square". That alone could easily account for .2mm.
IF your spoke ends up slightly too long, you can grind/file off a bit. I've done that a few times on cheap wheels when I didn't have the correct length.
08-03-17, 07:51 PM
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08-04-17, 04:19 PM
#19
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Those spoke calculator programs should recommend which way to round so people don't think that last digit is so critical.
08-04-17, 04:21 PM
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08-04-17, 04:25 PM
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08-06-17, 11:59 AM
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Unless you have a single wall rim (rare, low end, and/or very old) you can round up without any issue.
2x should be plenty for most road bike applications. A lot depends on the strength of the rim too.
2x should be plenty for most road bike applications. A lot depends on the strength of the rim too.
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