WHAT SIZE BOTTOM BRACKET SHOULD I BUY?
225997
i forget what i used, but i put my list of parts in either my review, or in the text for the images i submitted
225998
It says in the picture: English thread, 68mm(what the other guy quoted was his axle length that he bought to go along with it, and that needs to be selected according to the crankset you are getting, for proper chainring clearance and straight chainline)
225999
I am new to building bikes as well and am having a hard time figuring out what size bottom brkt to order.
1362345
Yes. I looked up this bike and it looks like the cranks fit this size. Either way, this is the larger of the two most common sizes and it's not really a problem if it goes on a crankset of the smaller size.
654517
I really think it depends on your chainstay clearance, chainring and crank arms. What I did to figure that out was to use websites like this one: http://sheldonbrown.com/chainline.html to figure out what length bottom bracket best worked for my bike. If you are running a triple, you should be at 45 (I'm assuming you are because you specifically asked about a chainline of 45), but a double should be 43.5mm...and on and on depending on your bike and gearing. You can also adjust the spacers on the back axle as well, but this shouldn't be necessary if you know that your rear (sprocket end) is at 45mm, which is what you are trying to achieve (explained here: http://www.velodromeshop.net/index.php?p=page&page_id=chainline). Sorry, not an easy yes or no answer. Just check those sites out and do the measurements and you should be ok. Hope I helped...good luck!
2252790
This crankset works with a standard threaded bottom bracket. Check the specifications for your model.
1498413
3 inch would do the job, the brackets are a bit more than 2 inch. It's a good product, beside the rust it came with, it has hold on well.
1732430
We bought the Shimano UN55 BB Square Taper Bottom Bracket 68X107mm to use with Origin8 Square Top Track/Single Speed Crankset - 170mm x 46T Square Taper White.
2252786
This will fit a 68mm bottom bracket. It is a pretty standard size. It comes with spacers to adjust for the width of various bottom brackets. I can't find specs for your bike, but your local bike shop would easily be able to tell you. This is the cheapest place you will find this set.
1376045
If your BMX has a one piece crank, this should work to convert it to a 3 piece crank set then you can use pretty much any bearing style you want. Just make sure the outer housing, Bottom Bracket, is around 2.25" and this will fit inside of the BB. Tighten the bolts down relatively tight and start putting in your 3 piece crank. You can always start with a donor 3 piece to save some money before going all out on bearings and what have ya.
42173
Measure your bottom bracket to be sure, but this is the most common size I've run into while replacing bottom brackets on bikes I fix. Provided your crank is a square taper and not an octalink or something like that.
531608
M5 x 15mm sounds correct. Whatever it turns out to be I'd go with stainless for strength - had bottom screw snap off after 8 months of riding. just a thought.
1463788
Yes, go to a best buy or a similar store and tell them your make and model and they will get you the mounting brackets you need
1763055
It's been quite a while, but I think I used the bolts from my existing bottom bracket. If you are getting a new BB it should come with bolts. If not, they are easy to get.
1120954
You could absolutely use a 16" board with these brackets. I forget what size board I used but I know it had a few inches overhang.
574685
You do need to buy brackets because the existing bike ones will not work. Bought the brackets from the same seller.
937153
No. The recommended length BB for this crankset is 113mm, however I put a 110mm BB on my touring bike. It really depends on the geometry of the bike, but a 123mm length is way too long for this crankset.
171221
Look on the back side of your factory crank arms. They should have the length in mm (170, 175 etc). Also just make sure your new crank set will fit the splines of you bottom bracket.
923793
This crankset does not come with a bottom bracket cartridge. The cartridge is a separate item that can be purchased on Amazon. I use this crankset with a 110mm BB Cartridge. But, you could use it with most any cartridge spindle length probably. I use a 110mm to get proper alignment with the rear cog set on my bikes. I remove the chainrings from this crankset and make a singlespeed crank out of it for my own purposes.