Rear hub in drilling 12/8 holes

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kavitator
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by kavitator

I need hub for Corima rim - rear has 20 holes and 12 spokes on DS; 8 spokes on NDS

Who making hubs in that kind of drilling?

Thanks

shimmeD
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by shimmeD

BHS did mine.
Less is more.

by Weenie


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WinterRider
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by WinterRider

Curious as to how your BHS 12-8 hub is laced.. grouped spokes or ?

Kavitator why not just use 24H and go skip one left side?

Marin
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by Marin

Because... that would be 12:6 ...

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WinterRider
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by WinterRider

Marin wrote: ↑
Wed Jun 20, 2018 12:46 pm
Because... that would be 12:6 ...
Used 12-8 w 24H... yet 3 into 12 goes 4 of course.. and 4 at 2x gives 8. The H skipped 1x.. adjoining crosses then meet.

Recently laced 12-8 w the old generation Bontrager paired 24 hole rear.. gave equal tension L/R.

12-6 would work fine too... deep rim .. rider lower wattage... been done lots. 18H bargain finds I make 27H rears.. 18-9.

shimmeD
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by shimmeD

Sorry a bit misleading since I got a 16:8 from BHS but pertinent that it was drilled to order.
Less is more.

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WinterRider
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by WinterRider

shimmeD wrote: ↑
Wed Jun 20, 2018 9:59 pm
Sorry a bit misleading since I got a 16:8 from BHS but pertinent that it was drilled to order.
Boy I am glad I never post and THEN think about it... :thumbup: I've got you by miles....

12-8... with the flow going to heavy, wide truck-like :roll: rims methinks this lacing has some potential. Both I've done to date utilized 24H hubs w 1x skip one hole heads in left side-- radial DS.

DS is the lacing pattern issue w 3 to 2 spoke count... 2x L means some spoke math. I don't think arriving at a formula of much difficulty.. granted this route isn't going to see many wheels. Yet.. 12-8 means supposedly an increase in lateral stiffness over the 2-1 16/8's via the left side. 16/8 DS lacing is straight across counter-posed spoking... very solid... IMO the ideal rear lacing. All radial DS 12-8 feels same.. albeit my experiments w 500+ gr 'truck' rims and 14g wire. Lacing w Lasers means all of 15-17 grams of weight savings... no reason ... unless one thinks using alloy nips makes sense over brass. I'm not in that camp.

12-8 in a Kinlin 200 380's gr rim w Powerway R13 .. that'd be my trial to run. 16/8's stay put w 200's for me running Pro One tubeless.. around 105/95 kgf tension levels. I think the total kgf rim limit is in that range.. given the my 180's lb load. The 12/8 options DS are 2 pulling w one pushing, 2x ... or all radial.. Lasers. Or.. you tell me.

12-8 is purely recreational pursuit in my world. Why not.. the calendar keeping rolling along. :beerchug:

Marin
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by Marin

Please post some pics of your wheels!

TheKaiser
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by TheKaiser

WinterRider wrote: ↑
Thu Jun 21, 2018 1:06 pm
Yet.. 12-8 means supposedly an increase in lateral stiffness over the 2-1 16/8's via the left side.
Wait...are you saying that 12-8 should have more lateral stiffness than 16-8? More spokes is always stiffer than less spokes, all else being equal, so where are you getting more stiffness from? Better bracing angle via going all heads in, and if so, on which flange? Or have I misunderstood entirely?
WinterRider wrote: ↑
Thu Jun 21, 2018 1:06 pm
16/8 DS lacing is straight across counter-posed spoking... very solid... IMO the ideal rear lacing. All radial DS 12-8 feels same..

...around 105/95 kgf tension levels.

12-8 is purely recreational pursuit in my world. Why not.. the calendar keeping rolling along. :beerchug:
Agreed that 16-8 seems ideal. You are getting a nice tension balance with 12-8 though. So it sounds like you are saying that in terms of ride feel you fine 12-8 feels just as stiff. which gets back to the point that your 12-8 wheel is radial DS. Is that all heads in, which is where you might pick up your better bracing angle, but in the first quote above it sounds like you are saying you pick up extra stiffness on 12-8 via the left side, not the right (DS).

Like Marin, I'd love some pics, as it is a lot easier to see how this all goes together than trying to visualize from a descripion.

Remember that when doing radial DS, you need a large diameter 1 piece, strong and stiff hub shell, as the drive torque now needs to be transmitted across the barrel to the left side flange. At some point I saw data quantifying how much a hub shell can wind up with radial DS lacing, and it was surprising.

TheKaiser
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by TheKaiser

kavitator wrote: ↑
Tue Jun 19, 2018 9:49 pm
I need hub for Corima rim - rear has 20 holes and 12 spokes on DS; 8 spokes on NDS

Who making hubs in that kind of drilling?

Thanks
What kind of Corima rim is that? Was it originally intented for one of their complete wheels? It seems weird for them to do an aftermarket rim in such an unusual drilling.

Marin
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by Marin

I think he's doing radial DS and radial NDS.

So he doesn't really need a stiff hub shell...

bm0p700f
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by bm0p700f

Kavitor. You need a blank shell and have it drilled. It's a pretty odd pattern and pretty proprietary.

TheKaiser
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by TheKaiser

Marin wrote: ↑
Sat Jun 23, 2018 9:14 pm
I think he's doing radial DS and radial NDS.

So he doesn't really need a stiff hub shell...
:lol:

Marin
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by Marin

Image

alcatraz
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by alcatraz

Holy crap. This wheel must be the craziest wheel I've ever seen. A wide axle front wheel with a freehub. :D

by Weenie


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