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  • PF30 help needed please. (what have i done wrong.)
  • ton
    Full Member

    started to take out my pf30 bb. it came out nice and easy. with a allen key and a hammer and drift.

    bought one of these to put in,
    http://www.wigglestatic.com/images/fsa-bb30-adapter-sleeve-med.jpg?w=430&h=430&a=7

    it is far too small diameter wise. it measures 40mm

    this is what I have taken out. the bb shell must be over 60mm

    SRAM, PF30, OS press-in bearings, sealed cartridge

    sillyoldman
    Full Member

    PF30 and BB30 are different. Same bearings, but PF30 supports the bearing in a cup which presses into the frame. BB30 has no cup – bearing goes directly into frame.

    ton
    Full Member
    cp
    Full Member

    as above, they’re different.

    cp
    Full Member

    do I need this

    yep

    sillyoldman
    Full Member

    That’s designed for the task but looks a bit pish.

    Something like a Wheels Mfg PF30 Outboard BB would be a better solution – one unit for converter and BB. Solid and quiet.

    sillyoldman
    Full Member

    Exactly that aye.

    ton
    Full Member

    thanks mate.

    bring back the days of good old fashioned square taper……… 😀

    warns74
    Free Member

    bring back the days of good old fashioned square taper

    Amen to that!

    Praxxis Works and Hope also have similar options. Presume its a Spesh?

    ton
    Full Member

    warns74, it is mate.
    it is all working fine but I need a bail out gear.

    MSP
    Full Member

    I fitted a hope pf41 in my spesh enduro which is actually called a pf92 by most manufacturers. They do options for 24mm (standard shimano) or bb30 cranks. Quite an expensive option though especially when you price in getting the tool. But I have always found hope reliability pretty good.

    ton
    Full Member
    MSP
    Full Member

    Yep thats the one.

    warns74
    Free Member

    is this the one?

    I’m not claiming to be an expert but be careful, I’m not sure that is the right one.

    The Hope system for BB parts is actually quite intuitive, (i posted this the other day)

    http://singletrackworld.com/forum/topic/pf30-hope-bb-options-sanity-check-please

    If its a spesh then I think its a 46mm shell so you might need PF46 not PF41

    There is a great reference chart here:
    https://18bikes.files.wordpress.com/2014/01/2014-bb-selection-table_final.pdf

    PF30 with 46mm internal diameter,73mm wide shell and 24mm shimano cranks would mean part no “BBPF467324SSN”? (Some nice part no logic)

    HTH?

    warns74
    Free Member

    Erm, not sure but I feel your pain!

    [edited to avoid further fubardness!]

    MSP
    Full Member

    so, this one then……I hope so….my head is fubar…….

    http://www.chainreactioncycles.com/hope-pf46-press-fit-30mm-sram-bottom-bracket/rp-prod128185?gs=1&gclid=CjwKEAjw0-epBRDOp7f7lOG0zl4SJABxJg9qY6-u3kzJMgnceKZivcS2w_T1a-wCR5Uz58AS4usAEBoCc83w_wcB&gclsrc=aw.ds

    Oh bugger, I’m home now and have just checked the box, yes it’s the PF46 😳

    But if you are fitting a shimano crank this is the one you want.

    http://www.chainreactioncycles.com/de/en/hope-pf46-press-fit-stainless-bottom-bracket/rp-prod118541

    The one you linked is for the 30mm (bb30) crank.

    I was pretty confused as well, so got my LBS to check that I was ordering the correct one.

    ton
    Full Member

    think I have it now. PF46 for 24mm axle. thanks again fella’s.

    warns74
    Free Member

    Excellent! be interested to hear how you get on with it.

    MSP
    Full Member

    But it still isn’t clear to me if you should select the 68 or 73mm option for the spesh enduro. Maybe worth dropping hope an email to make sure, or buying it from your LBS and asking for their advice.

    I fitted sram bb30 cranks so my requirements were slightly different to yours.

    ps. I am glad warn74 spotted my mistake, I would have felt really crappy about steering you wrong on a bit of advice I gave without fully engaging my brain.

    ton
    Full Member

    i have found the hope bb thing i need. it is a pf46/68/24. £80 from crc.

    quite expensive. is there a convertor that presses in and allows you to use the shiman bearings you have.

    warns74
    Free Member

    Hi ton, MSP, (me again!)

    I really hope I’m not confusing anything here, and would reiterate I’m no expert and am only speaking from previous experience.
    I have 2013 stumpy fsr 29er which has a PF30 BB. So far I’ve used 2 Praxxis works converters (same idea as the Hope option) to run 24mm shimano XT cranks.

    I’ve checked the invoices for both praxis works BBs I bought and confirmed they were both 73mm wide.

    If (and this is a big caveat so please accept my apologies if this is not the case) your enduro uses the same PF30 BB as my stumpy then you “might” have ordered the wrong one.

    The Hope reference code should be: 46/73/24 (46mm diameter, 73mm width, 24mm cranks). I think you have ordered the 68mm one?

    The Praxxis works website implies PF30 68mm is road bikes and PF30 73mm is for mountain bikes.

    http://www.praxiscycles.com/conversion-bb/
    (scroll down)

    HTH
    Ant

    [Edit, if it’s of use, PM me and I can give you the email of a really helpful guy at the Spesh UK helpdesk who gave me loads of technical advice when I was doing my build]

    ton
    Full Member

    warns, i have not ordered it yet, a pal is a mechanic at leisure lakes. i am waiting to see if he can find a cheaper option than the hope.

    warns74
    Free Member

    I’ve used these, (same design as the Hope one) for £54, seem to be pretty well rated by those on here who have used them and saves £26

    http://www.hargrovescycles.co.uk/praxis-bottom-bracket-converter.html

    ton
    Full Member

    warns, would it be the osbb option for a specialized.

    warns74
    Free Member

    No, it’s the “73mm Shim Conv PF30” (product ref 56821)

    Shim Conv = Shimano Converstion I think

    feisty
    Free Member

    Just fitted a sram praxis BB to my Niner Jet9 carbon and my creaky stupid pf30 cup issues (and sram adaptor cups) are a distant nightmare.

    It really does make the horror that is pf30/bb30 a more than acceptable BB format

Viewing 28 posts - 1 through 28 (of 28 total)

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