The wheelbuilding thread

Wheels, Tires, Tubes, Tubeless, Tubs, Spokes, Hookless, Hubs, and more!

Moderator: robbosmans

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The spirit of this board is to compile and organize wheels and tires related discussions.

If a new wheel tech is released, (say for example, TPU tubes, a brand new tire, or a new rim standard), feel free to start the discussion in the popular "Road". Your topic will eventually be moved here!
apolloFER
Posts: 27
Joined: Thu Nov 03, 2022 12:39 pm
Location: Croatia

by apolloFER

jever98 wrote:
Sun Jan 07, 2024 10:53 pm
I've built with cx sprint on the brake side on the front wheel, cx ray right side. Worked well. 24 spokes, 90kg rider, cx use, light bicycle wr35 rim. On the rear I used cx sprint on the DS and CX Ray on NDS.

Cheers
Thanks for the insight!

by Weenie


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ppg677
Posts: 16
Joined: Wed Oct 04, 2023 3:33 am

by ppg677

Hi, are the stated ERDs on Light Bicycle rims pretty accurate? I just got some AR56 rims and I don't have any extra spokes short enough to measure using the technique i've read elsewhere.

Light Bicycle quoted me suggested spoke lengths to use for my Shimano hubs. Not sure about the "261mm" one-off measurement below.

AR56 ERD from lightbicycle.com: 527mm (not including nipple head dimension)

Suggested 3-cross spoke lengths from Light Bicycle sales rep:
front wheel drive side: 261mm
front non drive side: 260mm
rear wheel drive side: 260mm
front non drive side: 262mm


Front hub: Shimano HB-RS770, 28 holes
Left Flange Diameter: 44mm
Right Flange Diameter: 44mm
Left Center-to-Flange: 22mm
Right Center-to-Flange: 34mm

Rear hub: Shimano FH-RS770, 28 holes
Left Flange Diameter: 44mm
Right Flange Diameter: 45mm
Left Center-to-Flange: 33.8mm
Right Center-to-Flange: 18.9mm

TidyDinosaur
Posts: 85
Joined: Thu Sep 29, 2022 6:48 pm
Location: Central EU

by TidyDinosaur

ppg677 wrote:
Mon Jan 29, 2024 11:17 pm
Hi, are the stated ERDs on Light Bicycle rims pretty accurate? I just got some AR56 rims and I don't have any extra spokes short enough to measure using the technique i've read elsewhere.
Just put some tape on each of the spokes at a defined distance from the top (250mm or so) and measure between the tape...

speedylumberjack
Posts: 15
Joined: Sun Oct 13, 2019 5:54 pm

by speedylumberjack

Newbie question, any reason why I can't reuse spokes if I'm rebuilding an wheel/hubset with a new rim? Have a White Industries CLD hubset laced with CX-Rays to some pretty beat and old open mold carbon rims that I'm thinking of having rebuilt with some new Lightbicycle rims.

robertbb
Posts: 2180
Joined: Thu Jul 23, 2009 3:35 am

by robertbb

speedylumberjack wrote:
Wed Feb 07, 2024 6:14 pm
Newbie question, any reason why I can't reuse spokes if I'm rebuilding an wheel/hubset with a new rim? Have a White Industries CLD hubset laced with CX-Rays to some pretty beat and old open mold carbon rims that I'm thinking of having rebuilt with some new Lightbicycle rims.
The ERD of the new rim would need to be identical, for starters. Even if that were the case, I wouldn't re-use them.

bsbs273
Posts: 9
Joined: Tue Oct 10, 2023 4:27 pm

by bsbs273

Newbie question here. I have a 40 mm deep rear wheel on my Parlee Z5 (tight wheel clearance at the rear). I get constant chainstay rub when pushing big power. 81kg rider. The rear wheel has a novatec straight pull 24h with cx ray spokes. I am looking to make this rear wheel as stiff as possible as I like to get out of the saddle and push hard. What spokes would you recommend, or would a spoke and new hub combo be a better option?

jever98
Posts: 1197
Joined: Wed Feb 18, 2009 12:02 pm
Location: Seattle

by jever98

Thicker or more spokes should help. Eg cx sprint instead of cx ray. Not sure how big the difference will be, though.
----
No longer in the industry

dsveddy
Posts: 99
Joined: Tue Jan 17, 2023 8:56 pm

by dsveddy

[deleted]: accidentally double-posted, can't figure out how to delete the post itself.
Last edited by dsveddy on Fri Feb 16, 2024 6:05 pm, edited 1 time in total.

dsveddy
Posts: 99
Joined: Tue Jan 17, 2023 8:56 pm

by dsveddy

Does anyone here have experience with “campy WTO style” 2:1/21-spoke layouts? I found some Goldix “R240” 2:1 hubs that are super light; build would be as follows:

Goldix R240 21 spoke hubs: 264g/$120

Pilar Wing spokes+nipples: 180.6g + 16.8g / $55.17 for 60

50mm Deerobust hooked tubeless rims: 800g / $428.64

So total weight would be approx 1261.4g and cost would be $602.81.

This seems almost too good to be true. I know there is going to be some error in weights. I know my spoke weights will change depending on length. But I also know campy’s WTO 60mm wheels are under 1400g and are a very similar spec in all regards—so this quoted weight is not completely unfathomable.

But still, what are some pitfalls I should expect here? Do the experienced wheel builders here think these wheels will be noodles or ride like crap?

bobones
Posts: 1334
Joined: Mon Aug 12, 2013 11:19 am

by bobones

...

purplecu22
Posts: 12
Joined: Sun Dec 05, 2021 12:01 pm

by purplecu22

I have an enve wheel with straight pull spokes. They are cx-ray. The wheel flexes to much. I want to rebuild the wheel with normal staight pull DB. 2.0-1.8 spokes.
Can i order the exact same length or should i add, maybe 1mm. Ive never build a wheel with cx-ray and dont know if they stretch a lttle or not.
Last edited by purplecu22 on Mon Apr 08, 2024 4:06 am, edited 1 time in total.

bobones
Posts: 1334
Joined: Mon Aug 12, 2013 11:19 am

by bobones

I would just use same size. They're basically flattened Lasers, so they stretch enough that I would round down to the nearest available length buying spokes, but not otherwise. You could also just recalculate the spoke lengths yourself.

purplecu22
Posts: 12
Joined: Sun Dec 05, 2021 12:01 pm

by purplecu22

I know carbon rim makers say no straight gauge spokes with their rims. But?
Double butted on the drive side and straight gauge on the non-drive side work. I have a reusable spoke locking compound i can put on the non-drive side.

Has anyone built a wheel like this. Im looking for maxium lateral stuffnes and being able to use with a heavier ride.
The hubs are dt 240 and enve 25mm shallow rim. I cant change these two things.

NoTheBench
Posts: 1
Joined: Tue Apr 23, 2024 8:26 pm

by NoTheBench

I am building a pair of carbon wheels with following components :

- Nextie CRX 45mm carbon rims
- Dt Swiss 240's straightpull rimbrake hubs (2013 or 2014 model sourced from a paire of DT RC38T wheels)
- Sapim CX Ray

Front wheel is finished average spoke tension is 104kgF (min 102kgF max 105kgF). Is it enough ? I'm not sure going higher would be beneficial for a front road wheel (I'm 68kg).

Rear wheel is almost done (need some touch up) but I'm surpised of how much of a tension difference there is between drive side and non drive side.
Drive side : 125kgF average (min 120 max 130)
Non Drive side : 50kgF (min 45 max 55)

At lower spoke tension my tensiometer is less precise. I can homogenise non drive a bit more and get every spokes around 50kgF. However it still seems very LOW. It seems DT Swiss 240 geometry is not that good, according to spocalc IO for 130kg drive side I would end at 62kg non drive side (0.48 ratio), but my NDS tension is even lower than that ratio.

Is it an issue for wheel durability to have such low non drive side tension ? My wheel is centered within 0.1mm, rim can't take up to 130kgF so I can't tension the drive side any further nor change dishing. If I'm not mistaken I can't do anything else but homogenise non drive side tension a bit more and live with it ? I'm thinking of adding Loctite 220 to NDS to prevent spokes from loosening.

I use Unior 1752/2 and Unior tension app, tensiometer appears to be calibrated (it is delivered with a steel rod for calibration) so tension value even if not perfect can't be way off. Spokes length seems fine (not that it would change tension anyway).

Thanks for your help !

User avatar
wheelbuilder
Posts: 1313
Joined: Wed Feb 08, 2017 2:10 am

by wheelbuilder

You can have really low nds tension and be ok, but they will tend to loosen a few times and then settle if the rest of the build is sound.

Edited for re-write of additional methods. Check back in a few.
Never cheer before you know who is winning

by Weenie


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Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

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