# Rim lacing, 36 rim to 48 hub

Can you lace a 36 hole rim to a 48 hole hub. Ive gotten several diferent answers to this, my friend did it, I think you can, No you cant…So can you,? Im looking more for someone who has actually done it, I must put an end to this comfusion! So anyone out there done it, how do you do it, is it just as strong as normal, and most off all How do you do it? Any help will be appreciated VERY appreciated, I was just gonna get a qu-ax rim but its just takin too long to get em in.

I awnsered all those and backed them up, so makingt his was stupid.

You missed the point in why I made this still, one you didnt really “back them up” and two, If it is in fact possible I will need a lil help in how to do it.

Get some good compueter programer to make you a spoke length calculator.

Me and Andrew tried to figure it out, if you skipped every third kinda like this |||o|||o|||(the o represnts skipps) it equals 36 spokes, But the problem is that to make up for the gaps and the odd lacing, some of the spokes may need to be diferent lengths…So if there is anyone out there who has done it please help.

I havent done this, but i have looked into doing it. Ive searched on the subject and too have found differant answers, yes it can, no it cant etc.

I dont see why it would compromise strength, as all the holes in the rim will be occupied.

The way you would lace it would be leaving 6 holes open on each hub flange: 3 spokes, miss a hole, 3 spokes, miss a hole, etc.

I have made a 2D drawing (not taking the flange width into consideration) of this in Autocad, the result being 5 differant spoke lengths needed, with a differance of 9mm btw. the longest and the shortest spoke- this was for a 700c rim,
the differance in length will differ for 26, 24, 20 and 19in rims

Ohh its for a 19in trials rim

Here is a quick drawing of 1 side of how it would look, this is 2D so these arnt the actual spoke lengths, as the width of the hub hasnt been taken into consideration.
ERD is based on Alex 19" Rim, and the PCD is based on a Quax 48 hole hub ( I dont know the PCD for the torker hub)

The spokes in one direction, follow the pattern,
168.8
171.1
173.6

The spokes in the opposite direction, follow the pattern,
176.2
178.8
173.6

So there is 10mm differance between the longest and shortes spoke (in the 2D diagramme)

This doesnt help much but definatly shows you have to use differant lenght spokes

Not sure if this is correct, but if you took the equation

R^2 = x^2 + y^2

where
R = spoke length
x = half the distance between flanges
y = the distance btw. the hole in the flange & the hole in the rim (in the 2D drawing above)

in this example we are still using the quax hub
the distance btw. flanges = 55
Therefore x = 27.5

Cut out all the calculations…

The values in the above post

168.8 = 171.03 Spoke length
171.1 = 173.3 Spoke length
173.6 = 175.76 Spoke length
176.2 = 178.33 Spoke length
178.8 = 180.9 Spoke length

(^2 = squared)

I havnt take the spoke hole size in the hub into consideration either

Maybe somewone who has calculated spoke lenghts before could help confirm this is correct.

Hub and rim dimentions taken from udc spoke calculator

Christ guys, Just get a 36 hole hub and a 36 hole hub.

Re: Rim lacing, 36 rim to 48 hub

“smdO2” <smdO2@NoEmail.Message.Poster.at.Unicyclist.com> writes:

> I have made a 2D drawing (not taking the flange width into
> consideration) of this in Autocad, the result being 5 differant spoke
> lengths needed, with a differance of 9mm btw. the longest and the
> shortest spoke- this was for a 700c rim,

You need to redo your drawing. The difference in spoke length will be
less than the distance between holes in the hub flange. This will be
much smaller than 9mm.

Ken

Cody,

For the price of new spokes, nipples, rim strip, tire, rim, and wheel build, you can buy a whole trials wheel.

Nah, 12.4 bucks for spokes, 41 bucks for hte rim. 172 bucks for hte hub, 41 bucks for hte rim.

I just dont understand how they would need diferent sizes, if your skippin every third hole, wouldnt it be like a 36 spoke hud, just has a few extra holes int it? LIke you put a few holes in the 36 sopke hub.

I trired to click edit and hit quote, and now it wont let me delete it

Re: Re: Rim lacing, 36 rim to 48 hub

Unfortunatly not.
Have a look at the attached drawing,
-the blue circles and lines represent the 36 hole hub and spokes.
-the red circles and lines represent the 48 hole hub and spokes.
-the red dashed lines represent both (as 6 holes on each flange line up with each other) - these 12 spokes will be the same lenght as if you were using a 36 hole hub.

Now notice some of the red(48) spokes are shorter, and some are longer than the blue (36)

cont…

Now check the same drawing with dimensions,

• the yellow dimensions are for the 36 hole hub- they are all the same length.
• the white dimensions are for the 48 hole hub.

so there IS a sizable differance in between spoke lenghts.

cont…

Now check the same drawing with dimensions,

• the yellow dimensions are for the 36 hole hub- they are all the same length.
• the white dimensions are for the 48 hole hub.

so there IS a sizable differance between spoke lenghts.

sorry bout the multiple post.

last one…

notice the differance in pattern between the two.

caw89 have you tried to get a 19" 48 Hole Alex rim through your LBS, because municycle.com offer 48 hole DX32 rims, and the pre 2005 quax unis came with DX32 48 hole (but now they come with a BX38 rim)

So maybe they are available in 48hole, or maybe they were specially made for Quax spicifically?!?

Re: Rim lacing, 36 rim to 48 hub

“smdO2” <smdO2@NoEmail.Message.Poster.at.Unicyclist.com> writes:

> Unfortunatly not.
> Have a look at the attached drawing,

There’s something wrong with your drawing. You show a range of 10mm
in spoke lengths, but the range is actually 5mm. Email me if you want
details - username cline at domain frii.com.

Ken

P.S. I may have overstated my case when I wrote that the variation in
spoke lengthss was “much smaller” than the distance between holes in
the flange. In fact, the spokes vary by about 2.5mm from the length
required for a 36 hole hub. When you look at the 5, difference
between the short an long spokes, it isn’t that far from the 8mm hole
spacing.

Re: Rim lacing, 36 rim to 48 hub

Ken Cline <ken.cline@cs.cmu.edu> writes:

> You show a range of 10mm in spoke lengths, but the range is actually
> 5mm.

OOps. I made a mistake - not counting spokes on the odd side that
would lie exactly between flange holes. Accounting for these makes
the range of either 6.5mm or 8mm, depending on whether you elongate
all of them, shorten all, or mix.

In any case, the range remains less than or equal to the hub hole
spacing.

Ken