UK and Europe · Public discussion

Giant OCR 4 sizes - help please

Started by Calvin · · Last activity · 3 posts · 1,830 views

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UK and Europe
Published
15 September 2007
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15 September 2007
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Calvin
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  1. I'm looking for a budget racing bike for my son for his 12th
    birthday. Within my budget all I've seen is a Halfords TCR 2 in small
    which I know is an OK size for him as his brother has one, at £230.
    That bike's OK, it works perfectly well, but I'd really like to get
    something a bit different just so they don't have exactly the same.
    Not only that but I've had experience of buying from Halfords and it's
    not fun.

    I've been offered a Giant SCR 4 at a LBS which looks good but it's
    just a bit too expensive at £315. The one in the shop was the right
    size but I foolishly didn't notice which size frame it was.

    Tonight I've noticed that Wiggle are offering the Giant OCR 4 at £250
    but they don't have all of the sizes - they've only got a "51" (cm I
    guess). So at last the question: does anyone have an OCR 4 51cm which
    they could measure for me? I really need to know the stand-over
    height, the height of the top of the seat stem from the floor and the
    minimum "reach" from the front of the seat to the handlebars.

    I must admit that I'm making the assumption that the OCR and SCR
    ranges have different frames and aren't simply the same frame with
    different components - if that were the case I could simply find out
    what size SCR we saw today and I'd be sorted - anyone know?

    Thanks for your help,
    Calvin

  2. Assuming that it's a Giant's "Compact Road" frame (I'm guessing that that's
    what the CR is in OCR).
    Here's the bumph from the Giant web site, again I would guess that Wiggle
    are using the conventional frame size of 51cm meaning that the actual
    seattube would be 44cm (i.e. a Small), it would be 51cm for the same sized
    bike if it didn't have a sloping top tube.

    Cheers
    Jim J -sitting on a £700 Bike2Work vouchure :-)
    Compact Road Sizing
    Conventional Frame Sizing (cm) Rider Height Compact Road Frame Size
    Seattube / Toptube Length (cm)
    49-51 5'2" - 5'4" XS 42/52
    51-54 5'4" - 5'7" S 44/53.5
    55-57 5'7" - 5'10" M 50/55.5
    57-59 5'10" - 6'0" M/L 53.5/57
    58-60 6'0" - 6'3" L 55.5/58.5
    61-63 6'3" - 6'6" XL 58.5/61

  3. Jim said:

    Assuming that it's a Giant's "Compact Road" frame (I'm guessing that that's
    what the CR is in OCR).
    Here's the bumph from the Giant web site, again I would guess that Wiggle
    are using the conventional frame size of 51cm meaning that the actual
    seattube would be 44cm (i.e. a Small), it would be 51cm for the same sized
    bike if it didn't have a sloping top tube.

    Cheers
    Jim J -sitting on a £700 Bike2Work vouchure :-)
    Compact Road Sizing
    Conventional Frame Sizing (cm) Rider Height Compact Road Frame Size
    Seattube / Toptube Length (cm)
    49-51 5'2" - 5'4" XS 42/52
    51-54 5'4" - 5'7" S 44/53.5
    55-57 5'7" - 5'10" M 50/55.5
    57-59 5'10" - 6'0" M/L 53.5/57
    58-60 6'0" - 6'3" L 55.5/58.5
    61-63 6'3" - 6'6" XL 58.5/61

    Thank you so much for that, it makes a lot more sense now I realise
    that they're not quoting anything I could actually measure on the
    bike! Looks like I may have found something suitable at last.

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