The wheelbuilding thread

Everything about building wheels, glueing tubs, etc.
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MattSoutherden
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by MattSoutherden

Yeah. LB 25, or 35+25 was one possibility. Maybe the Yishun 33 tub?

How true are the weights?
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Marin
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by Marin

My LB rims (2 pairs of clinchers, 25 + 35) were at the claimed weight.

25x25 clincher set on Bitex RAR is 1280g BTW.

sib
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Joined: Mon Jun 15, 2015 2:03 am

by sib

I'm also looking to build a hill climb wheelset.
Lightest rims I've seen are from Far Sports. Not sure if anyone has any feedback on any of the sub-300g rims in particular, or their wheels in general?

http://www.farsports.cn/product/detail.php/id-20.html

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MattSoutherden
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by MattSoutherden

I just found those as well. Just asked about the wheels in the open mould wheel thread.

I think it would be just over 1Kg for the 24x20 front and a 30x23mm rear. Given I'm currently 72kg (was closer to 71 last year, but have been very lax this season) I thought the 30 would be more solid under power.
Last edited by MattSoutherden on Wed Oct 18, 2017 10:29 am, edited 1 time in total.
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sib
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by sib

Yeah, 30mm on the rear might be a sound option.
I'm usually a little under 65kg on race days, but it would provide added peace of mind.
If feedback on the rims is good, I'll prob get them built with carbon ti hubs.

What's the thinking behind having a wider rim just on the rear?

Marin
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by Marin

I'm between 75 and 78kg and my 25x25 clinchers are built with 24 thin spokes in the rear, and they are easily stiff enough for me. No idea how 20mm tubs would fare though.

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MattSoutherden
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by MattSoutherden

sib wrote:What's the thinking behind having a wider rim just on the rear?


They are much stiffer. Thought it would make it a bit more robust when honking away on the short HC courses. I was thinking of a light-ish 23mm tub on the back and something silly on the front. The front it basically just to stop the fork scraping on the ground. :lol:
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bm0p700f
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by bm0p700f

What hubs are you thinking of using MAtt? I have a set of 38mm 20.5mm deep tubular with carbon Ti hubs that weigh 1020g. I you went with extralite hubs and 20F/28R spoke count you could go even lighter ~940g

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MattSoutherden
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by MattSoutherden

Probably Carbon-Ti. I guess that means I'm looking at about the weight of yours. I presume yours are using cx-rays with alloy nips? The rear wheel I was racing with this year weighs over 1100g on its own. :shock:
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sib
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by sib

bm0p700f wrote:I have a set of 38mm 20.5mm deep tubular with carbon Ti hubs that weigh 1020g


I had a look on your website but couldn't find anything.
Do you have a link to these wheels, or are they special order? How much do they cost?

ooo
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Joined: Sat May 21, 2016 12:59 pm

by ooo

Any Light 26" clincher rim recomendation with 17-19mm internal width and 24-28 holes? (Carbon or alloy rim for disc brake)
'

bm0p700f
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by bm0p700f

I only have one pair of rims so I have hidden the listing so I have rims in case some customers have a crash repair requirement. There is a wider version of the rim that j am tempted to get on my next rim order I have had them before and they weigh 20g more.

pachag
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Joined: Mon Oct 30, 2017 1:51 pm

by pachag

Hello,
I will build my first wheel with these components : It's a front road with disk, size 700mm.
- Novatec d771 disk
- rim Dt swiss RR 411 asymétric disk
- spokes CN aero 424

I have some difficulties to calculate the spokes' length. Is it right ?

Image
Image

Thanks

bm0p700f
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by bm0p700f

those are the wrong lengths I get 295/297 with a ERD of 601mm assuming you will use there silly internal nipples. shorter lengths if you use other nipples.

ERD is 596mm using standard sapim nipples 292/294mm.

This is with 3x lacing. you have selected radial both sides which is a mistake and even then the length calculated are too long.

pachag
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by pachag

bm0p700f wrote:those are the wrong lengths I get 295/297 with a ERD of 601mm assuming you will use there silly internal nipples. shorter lengths if you use other nipples.

ERD is 596mm using standard sapim nipples 292/294mm.

This is with 3x lacing. you have selected radial both sides which is a mistake and even then the length calculated are too long.


I've just done again the calculation with 3x lacing and the result is greater as you can see on the next picture. Could you help me to find my mistakes ?

Image

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