Inflating Tubs on a Zipp disc

pilot_pete
pilot_pete Posts: 2,120
edited December 2011 in Workshop
Hi all

Just bought a TT bike which has a Zipp 900 rear disk (the flat one). The seller gave me a brass 90 degree Schrader pump adapter, which I have fitted to my Jo Blow track pump. It is this one here http://www.jejamescycles.co.uk/zipp-disc-floor-item141899.html

However, there is no sort of locking mechanism when you put it onto the valve and it is a real struggle to pump up the tyre whilst keeping the adapter on the valve; it takes one person holding it on and another to do the pumping. Now this can't be right, so where am I going wrong?

Thanks in advance.

PP

Comments

  • SBezza
    SBezza Posts: 2,173
    Yes that is the norm, normally get asked a few times in the season if I can hold the brass adaptor on whilst they pump the tub up.
  • plowmar
    plowmar Posts: 1,032
    Obviously a daft thought, but doesn't your Jo Blow have a Schrader valve option?, Just asking as mine does.
  • pilot_pete
    pilot_pete Posts: 2,120
    Yeah, it does. But that won't fit in the small opening in a disc wheel, hence the 90 degree brass adapter supplied with a disc wheel. The problem is these don't lock onto the valve, hence the need for a spare pair of hands!!!

    PP
  • plowmar
    plowmar Posts: 1,032
    I knew it was a daft question. Strange though that a locking device hasn't been developed esp. as the adaptor is not exactly cheap for something that doesn't fit purpose.

Categories