Rear hub in drilling 12/8 holes

Back by popular demand, the general all-things Road forum!

Moderator: robbosmans

User avatar
WinterRider
Posts: 564
Joined: Tue Feb 05, 2013 2:46 pm

by WinterRider

alcatraz wrote:
Mon Jun 25, 2018 8:18 am
Holy crap. This wheel must be the craziest wheel I've ever seen. A wide axle front wheel with a freehub. :D
Hey find a fork and we'll run it there. :beerchug:

Reason that build felt stiff... all 14g wire.. rim above 500 grs. In use by lightwts... no wattage .. almost any lacing DE-sign flies then.

2nd and last one laced alternate heads in/out DS... 1x left. Using a older generation Bontrager paired hole 24... giving nice wide angles left on the 1x. Tension was equal side to side... I balanced at 100 kgf.

Never a lacing that'll see any serious use. I'm not one to lay awake worrying about the 'lack of torque' the DS produces radial.. I suspect the stone age guy who carved out the first wheel wasn't concerned either... :smartass: I mean some torque laying on the roadway won't give flats.......

Butttt.. does balance tension .. some. Does theoretically give more lateral stiffness per spoke counts. 3-2 lacing means four groups of 2 DS spokes side each.. which with the heavy rim used was easy to true.. and stayed put.

IF I wanted desired thought about refining this count.. I'd go four groups of 3-2.. something on the lines of the G3.. say the gap between the spoke series around 50% of the circumference of the 3-2/5 spoke group. I only ride alloy rims... how heavy to go at 180's... would the Kinlin 19 be enough.. has eyelets. Kinlin 270's go just under a pound.. extra holes in rims/hubs et al does not matter in the real world. But as the mathematician Marin correctly observed four spokes is what .. 22 grams or so. 16-8's (mine Kinlin 200 380 some grams rims) are ideal .. but a winter 12-8 project next might get some consideration.
Litespeed 2000 Appalachian 61 cm
Litespeed 1998 Blue Ridge 61cm

Fitness rider.. 1 yr from seven decades age.

That is my story and I'm stick'n to it.

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

www.starbike.com



bm0p700f
in the industry
Posts: 5777
Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
Contact:

by bm0p700f

it will feel sluggish as well. the one set of 16 spoke 1x cross wheels I have feel sluggish.

User avatar
kavitator
Posts: 1167
Joined: Sun Sep 21, 2008 9:07 pm
Location: Slovenia---that forest land

by kavitator

bm0p700f wrote:
Sun Jun 24, 2018 12:41 am
Kavitor. You need a blank shell and have it drilled. It's a pretty odd pattern and pretty proprietary.
Yes its the only option - OR buy from Corima original. But they cost :|

shimmeD
Posts: 544
Joined: Thu Jun 28, 2012 10:52 pm
Location: eNZed

by shimmeD

BHS has the option of the 16:8 eg http://www.bikehubstore.com/SL210-p/sl210.htm
Kavitator, have you explored this and are they open to 12:8 drilling?
Less is more.

User avatar
kavitator
Posts: 1167
Joined: Sun Sep 21, 2008 9:07 pm
Location: Slovenia---that forest land

by kavitator

Yes - BHS dont have 12/8 - it was customers fault to buy some ebay rims with that hole drillings. Cheap = expensive now :|

alcatraz
Posts: 4064
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

What about using a 16:8 triplet hub with 12:8. Can it be done better than a standard 12:12 hub?

/a

User avatar
WinterRider
Posts: 564
Joined: Tue Feb 05, 2013 2:46 pm

by WinterRider

bm0p700f wrote:
Mon Jun 25, 2018 1:49 pm
it will feel sluggish as well. the one set of 16 spoke 1x cross wheels I have feel sluggish.
:noidea:

How does 16 1x compare to 20H laced 2x........... as I assume any 12-8 built to ride would be 2x

Trial lacing 2x 12-8 not tensioned... NDS not shown laced 1x. Well understood commercial builds need no open holes.

Image

Non symmetric feature is the triangle 4 to 11 o'clock on pic... found commercial
below...not a fan. I ran 18-10 9500+ miles similar... worked well albeit not lightwt build.. heavier spokes on 440 gr rim.

https://images-na.ssl-images-amazon.com ... t1AvPL.jpg
Last edited by WinterRider on Fri Jun 29, 2018 2:26 pm, edited 1 time in total.
Litespeed 2000 Appalachian 61 cm
Litespeed 1998 Blue Ridge 61cm

Fitness rider.. 1 yr from seven decades age.

That is my story and I'm stick'n to it.

User avatar
kavitator
Posts: 1167
Joined: Sun Sep 21, 2008 9:07 pm
Location: Slovenia---that forest land

by kavitator

TheKaiser wrote:
Sat Jun 23, 2018 6:55 pm
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.
https://www.corima.com/rims/rims-corima ... bular.html

20 holes (12/8) - i can post pictures when i get their hubs and spokes

alcatraz
Posts: 4064
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Is it possible it was originally a front wheel rim?

User avatar
kavitator
Posts: 1167
Joined: Sun Sep 21, 2008 9:07 pm
Location: Slovenia---that forest land

by kavitator

see on pictures of corima wheels

monkeyburger
Posts: 123
Joined: Mon Mar 26, 2012 2:45 pm
Location: Bali, Indonesia

by monkeyburger

Very strange.
https://weightweenies.starbike.com/foru ... 13#p307347

Btw, yesterday I asked one of my suppliers (Hubsmith) if they would drill a one off 12:8 hole hub.
The answer was no.
I tried.

Good luck.
MB
...finding my inner Onoda-kun...

monkeyburger
Posts: 123
Joined: Mon Mar 26, 2012 2:45 pm
Location: Bali, Indonesia

by monkeyburger

I built up one of these rims for a friend

https://www.instagram.com/p/BrMC19wg2hP ... lahrcqyl7e
...finding my inner Onoda-kun...

bm0p700f
in the industry
Posts: 5777
Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
Contact:

by bm0p700f

i am still struggling to understansd why build any wheel 12:8 Why not have one more spoke and do 14:7? It makes no sense.

monkeyburger
Posts: 123
Joined: Mon Mar 26, 2012 2:45 pm
Location: Bali, Indonesia

by monkeyburger

I, too, have absolutely no idea why Corima would use such a drilling other than to purposely create a "system". Even with their proprietary hub, the DS and NDS tension points are out of "phase". Maybe it plays La Marseillaise at speed...
I think the only thing that makes Corima wheels work is the inherent stiffness of the rim.
According to the user, the wheel feels stiff and stable, but so would 14:7, or 16:8 so I dont get it.
...finding my inner Onoda-kun...

Post Reply