Help With Bottom Bracket

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Help With Bottom Bracket
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flag unknown92
Posted: Mar 7, 2015 at 3:32 Quote
Hello pinkbike, switching over from moto, and I'm building up my first dirt jumper. I have a question about the bottom bracket (I searched and I'm still confused). I picked up an octane one void with a 68mm euro bottom bracket. Im looking to run bmx cranks, so which bottom bracket would be a good choice, as well as cranks? Is it possible to run an external bottom bracket and aftermarket bmx cranks? Thanks in advance!
flag SolarLonsky
Posted: Mar 7, 2015 at 6:34 Quote
iRide4Food wrote:
Hello pinkbike, switching over from moto, and I'm building up my first dirt jumper. I have a question about the bottom bracket (I searched and I'm still confused). I picked up an octane one void with a 68mm euro bottom bracket. Im looking to run bmx cranks, so which bottom bracket would be a good choice, as well as cranks? Is it possible to run an external bottom bracket and aftermarket bmx cranks? Thanks in advance!

You'll need a euro bottom bracket that fits BMX cranks, so 19 or 22mm diameter to fit the crank spindle. I know that Dartmoor and Octane make some of these. I've got a Dartmoor bb on my void with bmx cranks.
flag bikebike69
Posted: Mar 7, 2015 at 6:58 Quote
iRide4Food wrote:
Hello pinkbike, switching over from moto, and I'm building up my first dirt jumper. I have a question about the bottom bracket (I searched and I'm still confused). I picked up an octane one void with a 68mm euro bottom bracket. Im looking to run bmx cranks, so which bottom bracket would be a good choice, as well as cranks? Is it possible to run an external bottom bracket and aftermarket bmx cranks? Thanks in advance!

Hey bro, just a about any brand euro/68 BB will work for you. The main thing is finding the appropriate size spindle
and cranks. You have dozens and dozens of options out there.
As stated above most common size is 19mm or 22mm spindle size. So whatever BB spindle bore size has that's the size that needs matching up.
Just FYI, if you a bigger guy or really big jumper. Stay away from Ti spindles. While very light they can bend easy.
flag cmc4130
Posted: Mar 7, 2015 at 7:28 Quote
The Odyssey BMX euro bottom bracket or the Profile bmx euro bottom bracket would be good choices. With a 68mm bb shell, the tube spacer that comes with the Odyssey bmx euro bb should be the correct one (48mm). See below.

http://www.empirebmx.com/odyssey-euro-bb-kit

photo

DansComp Euro 3-piece crank installation instructions:
http://www.danscomp.com/install/Poverty_Euro_POW_Three-Piece_Crank_Install.pdf

As for cranks, Profile have traditionally been very popular in BMX and with riders who want their MTB to have a BMX style.
http://www.profileracing.com/estore/product.php?productId=319

Note this part regarding spindle length:
Guide for 19mm axle lenghts:
-5.625"(for Mid,American,Spanish,and internal Euro BB's)
-6.0"(for 68mm & 73mm external Euro BB's)
-6.875"(for 83mm & 100mm Euro BB's)
-5.25"(for Track 68mm internal Euro BB's)

My Black Market Mob has a 73mm wide bottom bracket shell. I use the 6" Profile spindles with regular Profile bmx cranks and an Odyssey euro bottom bracket. The 6" spindle is slightly longer than the typical one. Part of the issue is not just the bb shell width, but also whether the ends of your crank arms hit the chainstays.

Because of the 6" spindle, I also have to use a slightly longer tube spacer. 68 and 73 refer to the shell width. Normally a 48 tube spacer is used with 68 and a 53mm tube spacer is used with 73. Other than using a different tube spacer the bb is the same.
https://www.pinkbike.com/forum/listcomments/?threadid=145972

https://www.pinkbike.com/forum/listcomments/?threadid=159240

Unsecure image, only https images allowed: http://images.jensonusa.com/large/bb/bb308h00blk__175__916.jpg
Unsecure image, only https images allowed: http://p.vitalbmx.com/assets/images/product_guide/bottom_brackets.jpg
Unsecure image, only https images allowed: http://www.profileracing.com/estore/images/product-images/401/tigdhbbspindles_430.jpg
Unsecure image, only https images allowed: http://www.profileracing.com/estore/images/product-images/63/tubespacers_5193_900.jpg
Unsecure image, only https images allowed: http://www.tredz.co.uk/prodimg/59650_1_Zoom.jpg
flag unknown92
Posted: Mar 7, 2015 at 13:42 Quote
Sweet, thanks for all the help guys, helped a ton. Really appreciate it. I think I'm going to go with the odyssey bottom bracket, and check out all my options for cranks. Another question. I don't really understand which headsets are compatible with my bike. Its an integrated headset with an OD of 41.8mm. Do I need to find a headset with an OD of 41.8 or ID of 41.8? (I know it stands for inside/outside). Does the OD of the headset matter?
flag Metro-Gnome
Posted: Mar 8, 2015 at 10:38 Quote
iRide4Food wrote:
Sweet, thanks for all the help guys, helped a ton. Really appreciate it. I think I'm going to go with the odyssey bottom bracket, and check out all my options for cranks. Another question. I don't really understand which headsets are compatible with my bike. Its an integrated headset with an OD of 41.8mm. Do I need to find a headset with an OD of 41.8 or ID of 41.8? (I know it stands for inside/outside). Does the OD of the headset matter?

The inner diameter refers to the steerer tube diameter. Usually, integrated headsets are easy to find at any bike shop and are really cheap and easy to install yourself.. Just go to the shop with your frame and they'll hook you up. Don't pay them to install it though, it literally just takes putting them in and using a torque wrench to secure the stem properly.

So yes, the outer diameter of your headset should be 41.8. Also make sure the angle is correct. For example, my majesty dirt has a campy spec which is 45 degrees top and bottom. If that isn't correct, you could damage your headtube, and make your frame worthless.
flag cmc4130
Posted: Mar 8, 2015 at 11:38 Quote
iRide4Food wrote:
Sweet, thanks for all the help guys, helped a ton. Really appreciate it. I think I'm going to go with the odyssey bottom bracket, and check out all my options for cranks. Another question. I don't really understand which headsets are compatible with my bike. Its an integrated headset with an OD of 41.8mm. Do I need to find a headset with an OD of 41.8 or ID of 41.8? (I know it stands for inside/outside). Does the OD of the headset matter?

http://octane-one.com/void/

-material: custom butted 4130 cromoly
-recommended fork travel: 80-140mm or rigid forks ~435mm
-top tube (physical c-c): 565 mm / 22.2”
-chain stays: 379 mm / 14.9” slammed
-frame size: 311 mm / 12.2”
-compatible with all forks with 1&1/8” (1.125”) steertube
-integrated headset (Campy spec 45/45 deg, OD41.8mm)
-head tube stack: 115mm
-BB shell: standard threaded 68mm (compatible with MTB cranks and BMX cranks with Euro BB)
-biggest chainring: up to ~34t
-MTB hubs spacing (10 x 135 mm)
-tires: maximum size recommended 26”x2.35”
-27.2 mm seat post / integrated seat clamp
-disk brake only (no V-brakes mount)
-disk brake mount IS (International Standard), max rotor size: up to 185mm
-3M removable cable guides available separately
-no derailleur hanger
-ultra clean look
-weight: ~2.55 – 2.58kg

I am thinking that any regular BMX integrated headset is going to fit. Animal, Cult, etc. because they use that specification of "sealed mechanism Campagnolo-compatible integrated headset
45/45 degree ACB bearings"

Canadian bmx mailorder:
http://www.3ride.com/v2/listing/?category1=bmx&category2=Headsets
flag unknown92
Posted: Mar 8, 2015 at 23:34 Quote
Im trying to do my shopping online, as you find the best deals. Trying to avoid lbs haha. Alot of the headsets will say 45 x 45 , but wont state the OD measurement. So does the OD actually matter? One bmx FSA headset on CRC says its 45 45 campy, but 44mm OD. Looking for an FSA or Odyssey. Thanks, sorry for the stupid questions, this somehow confuses me beyond belief.
flag cmc4130
Posted: Mar 9, 2015 at 0:41 Quote
hmmm. i didn't know the O.D. issue was a thing. hmmm.
flag Metro-Gnome
Posted: Mar 10, 2015 at 9:33 Quote
Yes, the od matters on headsets, whether is Integrated or not... think about it- ALL steerer tubes are either 1 1/8, tapered or 1.5, basically...but not all headtubes are made to the same internal diameter. if youre off by 1 mm it'll DESTROY your headtube fast, I think. The degrees are important, but finding a campy spec or 45 degree headset is easy, its all about narrowing it down to which ones have the right diameter. If its too big it wont fit, and if its too small it'll rattle around in there (phrasing?)... either way I dont risk stuff like that to guesswork.
flag cmc4130
Posted: Mar 10, 2015 at 9:58 Quote
Metro-Gnome wrote:
Yes, the od matters on headsets, whether is Integrated or not... think about it- ALL steerer tubes are either 1 1/8, tapered or 1.5, basically...but not all headtubes are made to the same internal diameter. if youre off by 1 mm it'll DESTROY your headtube fast, I think. The degrees are important, but finding a campy spec or 45 degree headset is easy, its all about narrowing it down to which ones have the right diameter. If its too big it wont fit, and if its too small it'll rattle around in there (phrasing?)... either way I dont risk stuff like that to guesswork.

I guess I didn't phrase that right. Smile I meant to say I thought all the Campy 45/45's had the same OD.



This has a chart which refers to it as the "IS42" standard:
http://www.parktool.com/blog/repair-help/headset-standards

Campagnolo® Hiddenset (SHIS IS42)

The Campagnolo® Hiddenset is a proprietary design, and is basically an integrated-angular contact type without cups. The frame must be compatible with this design for this headset to be used. The bearings cone races do not press into the frame. The frame has a specially machined headtube to accept the bearings. However, this standard is not interchangeable with the Integrated System described above. Adjustment is similar to a conventional threadless headset.

Steering columns may be either 1-inch or 1-1/8 inch in this standard. The bearings are a slip fit into the frame. The common 1-1/8 inch standard has a bearing outside diameter of nominally 41.8mm with a 45-degree bearing seat. Campagnolo® brand bearings use a caged ball bearing inside the bearing unit. The unit can be pulled apart to be cleaned and regreased. Some other brands use a non-serviceable bearing, which are simply replaced, not serviced.


http://en.wikipedia.org/wiki/Headset_(bicycle_part)

"It is important to distinguish different standards of cartridge bearings in Integrated 1⅛" headsets. There are three integrated standards which are not compatible with each other. The numbers (45/45, 36/45, 36/36) refer to the angle on the cartridge bearing they use. All these bearings look similar.

Campagnolo Standard: 45/45. (often referred as Campagnolo standard) This is common in BMX frames, BMX-derived dirt jump frames (like the Transition Trail-Or-Park). They are also common on road bikes. Three most common manufacturers are Campagnolo, FSA and Cane Creek. Head tubes with this standard have a 42.0mm inner diameter.

Cane Creek Standard: 36/45. Very common on Mountain Bike frames and a fair amount of road frames. Most frames made by Giant that have integrated headtubes use this standard (which amounts to a lot of bicycles). Two major manufacturers: FSA and Cane Creek. Head tubes with this standard have a 41.1mm inner diameter, and Cane Creek claims its CC Standard headsets will fit in a Campagnolo Standard head tube using a 0.25mm shim under the top cap of the headset."
flag cmc4130
Posted: Mar 10, 2015 at 10:05 Quote
I know the question was re: Octane One, but . . .

http://www.ns-bikes.com/what-size-is-the-internal-headset-on-majesty-capital-frames,121,pl.htm
We use a most common BMX integrated headset standard - Campy spec (45/45 deg) with 41.8mm OD (Outside Diameter) of bearings. This should not be confused as Majesty & Capital frames are NOT compatible with the 41mm OD Cane Creek spec (36/45deg) or 41.5mm OD TH spec (36/36).

And Black Market Edit One:
http://www.blackmarketbikes.com/index.php?option=com_blackmarketbikes&view=category&Itemid=4&id=2&cid=23

•Head Angle: 69* with 414 Axle to Crown Fork
•Head Tube Length: 4.6"/ 117.5MM
•Headset Type: 42MM Integrated Campy Spec.
•Seat Angle: 71*
•Seat Tube Length: 11"/ 280MM
•Seat Tube Dia: 27.2MM (MTB) or 1"/ 25.4MM (BMX) with integrated seat clamp
•BB Height: 12.75"/ 325MM
•BB Options: 73MM Euro or 73MM Mid
•Chainstay Length: 15"/381MM
•Drop Outs: 10MM Laser cut chromoly
•Wheel Spacing: 135MM
•Wheel Size: 26"
•Stamped BlkMrkt TT & DT gusset
•Black Market Black Lite tubeset featuring True Temper USA
•Weight: 4.9lbs. ( 21.5" .035)
•Max Tire Size: 2.4" "Slammed"
flag unknown92
Posted: Mar 11, 2015 at 0:28 Quote
Awesome thanks guys. I guess the more I think about it, the more obvious it is haha. I see a lot of 42mm OD headsets and thats what confused me, I guess they just rounded it up. I found an odyssey integrated thats 41.8 spec so im going to snag that up.
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