|   Difference between heads in/out radial lacing? | firecrotch
Jun 7, 2002 11:14 AM | | Lacing up a friend's front road wheel radially, what is the difference between lacing with the spoke heads facing towards the hub or away? Thanks for any tips.
-Ryan |
| Broken hub flange or no broken hub flange.. | PatR
Jun 7, 2002 12:19 PM | | ..lacing heads-in puts a TON of stress on the hub flange, especially with heavier spokes like 14g or 14/15g. The spoke puts a lot of force right on the edge of the flange with heads-in, whereas heads-out puts the stress at the spokehole, where it was designed to be placed. Radial lacing stresses the hub flange anyway, and pushing it too far can crack the flange. Very few to no hub makers warranty for radial laced wheels - even Chris King has stopped warrantying radial lacing. Some will say that heads-in makes a stronger wheel because the spokes extend further out from the center line, but some simple trigonometry will show the difference is tiny. I always lace radial wheels heads out. I think it looks better, too. |
| Disagree | NCN
Jun 9, 2002 4:07 AM | | The stress on the hub flange is the same either way -- yes, it's a lot, and that's why manufacturers don't warranty radial laced hubs. But heads in or out doesn't change the level of stress. And lacing heads in does change the bracing angle significantly -- yes it's only a few mm but you're not talking a huge baseline in the first place. Just eyeballing my hubs, I'd guess it's about a 25% difference in lateral bracing.
So if you're determined to lace radially in the front (I'm not a fan of it) you should be heads in on both sides to increase the lateral stiffness. In the rear, you should be lacing radially only on the non-drive side, and should be lacing heads out to even up the drive and non-drive spoke angles, and thus the spoke tension, as much as possible.
NCN |
| On a non-disc front wheel... | shiggy©®
Jun 10, 2002 5:34 PM | | ...with a Cris King hub I used heads-in, one-cross for 5 years. Worked great. Wore out one rim and rebuilt the wheel the same way and used it until I went to discs.
I liked the extra bracing of the extra width and I like how it looks. To me heads out looks weak. |
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