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explain this wheel hub terminology please

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  • 28-04-2019 3:35pm
    #1
    NeonWolf
    Banned (with Prison Access) Posts: 359 ✭✭


    Thanks in advance all,


    on a bike description i see this listed about the hubs.

    straight pull,100x12mm, 24h(f) 142x12mm, 28h (RR) , Centre lock



    What is the 24h and 28h referring to? Holes for spokes?

    What is (f) and (RR) is it front and rear? is so , why the double r?


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    #2
    Cee-Jay-Cee
    Registered Users Posts: 12,235 ✭✭✭✭Cee-Jay-Cee


    NeonWolf wrote: »
    Thanks in advance all,


    on a bike description i see this listed about the hubs.

    straight pull,100x12mm, 24h(f) 142x12mm, 28h (RR) , Centre lock



    What is the 24h and 28h referring to? Holes for spokes?

    What is (f) and (RR) is it front and rear? is so , why the double r?

    Straight pull are the type of spokes used
    100x12mm is the drop out spacing/width of the wheel hub.
    24h = 24 holes for 24 spokes on the front wheel.
    28h = 28 spokes on the rear (RR) wheel.
    Centre lock is how the brake discs are attached to the wheel as opposed to 6 bolt which is the other method.


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    #3
    NeonWolf
    Banned (with Prison Access) Posts: 359 ✭✭NeonWolf


    I have a follow up question.

    I am looking to use my new bike on my existing tacx vortex smart trainer.

    I have sourced this part required to make it thru axle compatible.

    https://www.ebay.ie/itm/Tacx-E-Thru-Bike-Turbo-Trainer-Axle-Skewer-M12x1-5-With-Medium-Thread/362113884960?hash=item544fab6320:g:x9UAAOSwAWNcocqr

    However i am not sure what thread is on my thru axles.

    A quick inspection has revealed these numbers on the shaft of the thru axle itself .

    17 J3 QR50M-12-125-P1.5-10

    does the 1.5 in that number indicate medium thread. with 1 being fine and 1.75 being course?

    Thanks in advance.


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