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Guys have just acquired a Kona Blast frame and need to put a bottom bracket and headset in it.
What sizes am I looking for?
Have no issues building any of this up but am a bit behind times when it comes to measuring it all
does it have an old bb and headset in it??
What year is it? what cranks/forks are you putting on?
Nope - bare frame.
No idea on the year - just that it's a Blast - [url= http://www.ebay.co.uk/itm/250930486551?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_499wt_1153 ]THIS ONE[/url]
Depends what cranks you're going to put in it really. Shimano M770 cranks aint gonna be much use if you put a square taper BB in it.
Any 1 1/8" standard press fit headset will fit.
Bottom Bracket - depends on the cranks
Cheers - have a new set of Shimano square taper but was looking at a decent upgrade from that.
BB sizing norminally depend on the BB width (68 or 73mm in this case) & the crankset. The crankset will determine the chainline, normally somewhere around 45-47.5mm. Assuming you going to buy a hollowtech II BB or one make or another, all the spacers you need for either 68 or 73mm BB are included along with instructions.
EDIT: If the square taper cranks are ok, just grab a UN26 BB off CRC and be done with it...
Are the internal threads a specific size?
I'd rather put the square tapers on the wife's bike and get a complete new set on the new frame.
The forks are Marzochi Bombers.
[url= http://www.klassickona.com/oldgold/2k7/BLAST/index.html ]There you go![/url] It's a 2007.
Are the internal threads a specific size?
No, hollowtech or sq taper should fit fine (if sq taper, then measure the BB shell first to determine whether it's 68 or 73mm - as said above hollowtech will come with spacers to suit both).
Great - anyone recommend a chainset/BB combo in 160/165mm 9 speed?
Shimano Slx if you can afford it, deore if you can't would be my suggestion, XT is nice but gets expensive for not a lot of gain. Check out rose bikes (German mail order - quick & great service) for prices on both, they were the cheapest a while back. Remember you'll also need a HT II tool to install the BB cups.
Right - settled on [url= http://www.rosebikes.co.uk/article/shimano-slx-crankset-hollowtech-ii-fc-m660/aid:287671 ]this[/url] do I need to worry about it being "BSA thread"?
?
Sorry, when I saw this last night I was totally thrown by the BSA thread bit, as I'd not seen/come across that before. Wiki and Sheldon Brown's site say it's the STD thread... So yes go ahead and get them, just remember to buy the STD 175MM size [which is not default on the site], unless you need specically need 170mm's.
[url= http://singletrackmag.com/forum/topic/cranks-170mm-or-175mm ]170 vs 175 debate[/url], just in case you not come across it before
Well according to Sheldon I should be on 165's so I think I'll go for the 170's.
Cheers