Singlespeed & Fixed Gear - Help me lace up my rims

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View Full Version : Help me lace up my rims


Doolop
01-08-08, 12:08 PM
I have some velocity deep v's and some 32h formula track hubs im trying to lace up, im new to this can someone help me out?

32h Deep V ERD: 582
Hub Flange Dia: 71.5mm
Hub center to flange center? (??? help number crunch/explain this one)
The OLD according to formula is 120mm

Now im looking to do a 3 cross in the back and radial in the front (0 cross)

Any help is apprieceated, if you need more info please ask


*new*guy
01-08-08, 12:10 PM
http://www.damonrinard.com/spocalc.htm

shants
01-08-08, 12:19 PM
which formula hubs do you have? do yours have the cutouts on the flanges or not? i ask because there is a newer loose bearing model with different specifications than the cutout version. assuming that yours are the cutout style (with cartridge bearings), these are the specs that you want:

Front
Width from center to flange 34.5 mm
Flange diameter 62.0 mm
Rear
Width from center to flange 31.0 mm
Flange diameter 62.0 mm
Chain Line 42mm
Weight Front: 271 g, Rear 324 g


Doolop
01-08-08, 12:24 PM
Ok, i have the ones with the cut outs, but i measured the OLD and the front is 120mm and rear is 100mm

Do your calculations still stand?

flickwg
01-08-08, 12:36 PM
my personal opinion for the radial use the same spokes and have the radial at an angle, i think it looks good like that

Doolop
01-08-08, 12:42 PM
my personal opinion for the radial use the same spokes and have the radial at an angle, i think it looks good like that

I like this idea, so according to my calcs, ill need around 60+ 280mm spokes.

shants
01-08-08, 12:43 PM
Ok, i have the ones with the cut outs, but i measured the OLD and the front is 120mm and rear is 100mm

Do your calculations still stand?

yessir. i should note that those specs are from the IRO website. they use the cutout formula hubs for their wheelsets.

LóFarkas
01-08-08, 01:07 PM
Ok, i have the ones with the cut outs, but i measured the OLD and the front is 120mm and rear is 100mm

Do your calculations still stand?

You mixed them up. The front is 100 and the rear is 120. Space for the cog and whatnot. Afaik no mfgr ever made a 100 mm rear hub. I thik there are wider DH front hubs or something but you definitely have 100mm on your hands.

Grimlock
01-08-08, 03:32 PM
my personal opinion for the radial use the same spokes and have the radial at an angle, i think it looks good like that

Please explain how you do this without magic.

hockeyteeth
01-08-08, 05:58 PM
Please explain how you do this without magic.


+1

I built some ****ty wheel for my roommate today, but the spokes were too short so I made the wheel 1 cross. It's totally ********.

flickwg
01-08-08, 06:14 PM
its kinda hard to explain you just put them in

when i find a pic/do my own i will show you

Grimlock
01-08-08, 11:52 PM
I've been drinking but I remember this making my head hurt when I was sober earlier. Please post pics. How could this possibly work?

flickwg
01-09-08, 04:17 AM
ok here is a bad pic and its hard to see this might help i dont know
http://farm3.static.flickr.com/2281/2174524073_4641b5bfb4.jpg?v=0

Hassan347
01-09-08, 08:49 AM
any body know the the spoke length for a low flange formula front to deep v?

dijos
01-09-08, 09:06 AM
longer spokes?

~Stuart~
01-09-08, 10:26 AM
ok here is a bad pic and its hard to see this might help i dont know
http://farm3.static.flickr.com/2281/2174524073_4641b5bfb4.jpg?v=0


it kinda looks like he has the spokes spiraling in different directions, wouldnt that make for some odd tensions on the rim?

mihlbach
01-09-08, 11:42 AM
ok here is a bad pic and its hard to see this might help i dont know
http://farm3.static.flickr.com/2281/2174524073_4641b5bfb4.jpg?v=0

dumb, dumb, dumb. Its not the rim thats the problem, its the hub. The spokes on each side are twisting the hub in opposite directions with an incredible amount of force. Each spoke is tensioned with ~100kg of force x 36 spokes equals a scary amount of torsion constantly being exerted on the hub shell. I wouldn't be surprised if the hub catastrophically snaps in half at or near its midline, which would result in an instant loss of spoke tension. This guy not only looks like a drunken idiot, the lacing pattern of his front wheel proves that he really is. DO NOT LACE YOUR WHEEL LIKE THIS.

lhcommons
01-09-08, 11:47 AM
ok here is a bad pic and its hard to see this might help i dont know
http://farm3.static.flickr.com/2281/2174524073_4641b5bfb4.jpg?v=0

yeah, that looks dangerous. I'm no expert (of course that won't slow me down!) but that must apply some torque that no hub in the world is designed for.

But I could be wrong.

mihlbach
01-09-08, 11:56 AM
yeah, that looks dangerous. I'm no expert (of course that won't slow me down!) but that must apply some torque that no hub in the world is designed for.

But I could be wrong.

You are not wrong...no hub is designed to withstand torque like that. Hubshells are thin at the middle, particularly a front hub, which normally experiences zero torque, which the exception of wheels set up with disk brakes. And even with disk brakes, most of the torque is limited to one side and very little actually transfers to the other side of the hub.

flickwg
01-09-08, 01:25 PM
This guy not only looks like a drunken idiot, the lacing pattern of his front wheel proves that he really is.

thats just rude, he is not a drunken idiot he's a sponsored rider for charge, and he's not the only one with this lacing

mihlbach
01-09-08, 01:28 PM
thats just rude, he is not a drunken idiot he's a sponsored rider for charge, and he's not the only one with this lacing

Since when does sponsorship disqualify you from being a moron? The evidence in that photo is sufficiently conclusive. I stand by my statement:D

Hassan347
01-26-08, 12:43 PM
any body know the the spoke length for a low flange formula front to deep v?

anyone can't find anything anywhere :( halp

kemmer
01-26-08, 01:56 PM
Just measure everything. There are plenty of instuctions on the web for doing this. I believe I used the park tools site, just google it.