Valve adapter for road bike

dawesie01
dawesie01 Posts: 69
in Workshop
Simple question. What one do I need to inflate my tyres? I’ve only got this pump which I use for my MTB. The other picture is the valve on my road
bike.

Comments

  • MattFalle
    MattFalle Posts: 11,644
    edited June 2022
    You have a Scraeder pump, Presta valves.

    You need either:

    1. New inner tubes to match your pump

    2. A new pump to match your valves

    3. A Presta to Schrader adaptor - 50p or so from LBS, Amazon or online

    Personally I'd mug off that old pump you have, buy a new track pump from Merlin or similar - £20 upwards which will work perfect - this will allow you do presta valves schrader valves take you up to road bike pressures snd be a 100th (or 53 Ariana Grandes) easier than using that old hand pump.

    Edited to correct P/S fumble thingers - thankyou MM! 🤘🤘🤘
    .
    The camera down the willy isn't anything like as bad as it sounds.
  • MattFalle
    MattFalle Posts: 11,644
    edited June 2022


    .
    The camera down the willy isn't anything like as bad as it sounds.
  • Mad_Malx
    Mad_Malx Posts: 5,183
    edited June 2022
    MattFalle said:

    You have a Presta pump, Schrader valves.

    No, he is showing a presta valve and you can’t see the pump adaptor fitting, although mtb are often schraeder.

    OP - the little knob on the top needs loosening before attaching the correct adaptor. .

    MattFalle said:


    1. New inner tubes to match your pump

    The holes in the rims probably won’t be big enough for schraeder valves, unless you drill them (which may weaken the rim).
  • dawesie01
    dawesie01 Posts: 69
    Thanks all. All sorted, presta adapter purchased for £3 so will stick with the hand pump for now.

    What sort of PSI should I be looking at? Tyre says max 87.

    Also, read had gone down quite a lot, front a little less so a possible slow puncture. That said, they haven’t been pumped since I purchased in sept/oct. Does that sound about right with average usage?
  • MattFalle
    MattFalle Posts: 11,644
    Mad_Malx said:

    MattFalle said:

    You have a Presta pump, Schrader valves.

    No, he is showing a presta valve and you can’t see the pump adaptor fitting, although mtb are often schraeder.

    OP - the little knob on the top needs loosening before attaching the correct adaptor. .

    MattFalle said:


    1. New inner tubes to match your pump

    The holes in the rims probably won’t be big enough for schraeder valves, unless you drill them (which may weaken the rim).
    Tbh, i think mf is correct again re different valves as otherwise his post would say "how do i pump up my mtb and rosd bike valves as they both have the same"

    And yeah they're cheap ali wheels. I'd drill them out the mil' or so to accept diifferent valves.

    .
    The camera down the willy isn't anything like as bad as it sounds.
  • MattFalle
    MattFalle Posts: 11,644
    edited June 2022
    dawesie01 said:

    Thanks all. All sorted, presta adapter purchased for £3 so will stick with the hand pump for now.

    What sort of PSI should I be looking at? Tyre says max 87.

    Also, read had gone down quite a lot, front a little less so a possible slow puncture. That said, they haven’t been pumped since I purchased in sept/oct. Does that sound about right with average usage?

    There'll shortly be a lot of posts about weight and tyre pressure and width and use and and and but i'd bosh it to 87 no dramas.

    Tyres will deflate at different pressures for absolutely no logical reason at all. Its the eternal dwarf in the cupboard.

    Pump them both up and if the rear goes down quickly then consider slow puncture but if its just sat there for a few weeks/months its just one of those things.
    .
    The camera down the willy isn't anything like as bad as it sounds.
  • Munsford0
    Munsford0 Posts: 680
    They are doing well if they've not been pumped up for 9 months! I top my tyres up every other week. If you had a slow puncture the tyre would be flat by now.

    Pressure depends on tyre width, your weight and a trade off between comfort and avoiding pinch flats. 87psi sounds a bit low as a max pressure for a skinny road bike tyre.

    I weigh 62kg and run my 25mm tyres at 60psi front and 80 rear
  • MattFalle
    MattFalle Posts: 11,644
    If they're cheapo tyres then 87 is probably ot.

    The Prime 23s I put on bambino's bike are only slightly higher than that 90 -110 psi, so if these are older that could well be lower.

    Not the highest though, sgree totally. So bosh it up.

    Tbh as well the Primes are, like their other stuff, really good and mega vslue.
    .
    The camera down the willy isn't anything like as bad as it sounds.
  • dawesie01
    dawesie01 Posts: 69
    All good advice, cheers. I’ll pump them to 80’s and crack on.

    Certainly won’t be drilling holes to accommodate a different valve, fairly sure the £3 adapter and 2 mins with the hand pump will suffice!
  • MattFalle
    MattFalle Posts: 11,644
    dawesie01 said:

    All good advice, cheers. I’ll pump them to 80’s and crack on.

    Certainly won’t be drilling holes to accommodate a different valve, fairly sure the £3 adapter and 2 mins with the hand pump will suffice!

    Yup - if no need to go to different valves then just stick with what you've got.

    Pump away my man.
    .
    The camera down the willy isn't anything like as bad as it sounds.
  • N0bodyOfTheGoat
    N0bodyOfTheGoat Posts: 6,063
    What width are these tyres now inflated to 80 and have a max of 87?

    I inflate my 32mm GP5000 rear tyre to ~80-85PSI for moderately smooth tarmac. Total weight of me, bike, water, clothing, repair kit, food etc. is ~95Kg. Front 23mm @ ~95-98.
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    2020 Voodoo Marasa
    2017 Cube Attain GTC Pro Disc 2016
    2016 Voodoo Wazoo

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