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Correct spokes for Shimano hubs into Sun CR18 rims

Discussion in 'Bicycle Mechanics and Repairs' started by chriscross1966, 14 Nov 2017.

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  1. chriscross1966

    chriscross1966 Well-Known Member

    Location:
    Swindon
    Hi folks, I'm struggling to find a spoke calculator that knows about Sun's CR18 rims in 349 size, 36-hole and at the same time understands the hubs I'm using. Does anyone know one?... I want to lace a Shimano SG-S700 11-speed Alfine rear hub in 1x and a Shimano HB-M475 in radially for the front. Now the odd thing is that the rear should do that undished, whereas because the front has a single disc it will be dished over.... hence me wanting to find a calculator that knows about them....
     
  2. QFour

    QFour Regular

    Location:
    Nottingham
    Use prowheelbuilder and put your own dimensions in. You will need the data sheets for the hubs or a vernier calliper to work out the sizes. The CR18 rims you just need the ERD for the rim in your case 349 which looks like a 16" wheel. Hmmmm Brompton ... Looks like you are going to have fun.

    11 Speed Hub Sizes .. http://www.kstoerz.com/freespoke/hub/190

    Had a go at working it out .. I get 159.6 and 161 Spokes with 3 crossed
     
    Last edited: 14 Nov 2017
  3. OP
    OP
    chriscross1966

    chriscross1966 Well-Known Member

    Location:
    Swindon
    Having read a bit more up regarding wheels, it looks like radial is a bad idea with a disc on the front, so I'm guessing 2x at both ends.... the ERD is 340mm
     
  4. OP
    OP
    chriscross1966

    chriscross1966 Well-Known Member

    Location:
    Swindon
    OK, that seems to be working.... company bicycle guru seems to think I'll e OK at 2x on both ends....
     
  5. OP
    OP
    chriscross1966

    chriscross1966 Well-Known Member

    Location:
    Swindon
    Many thanks for that link BTW, they're pretty exhaustive, even though I had to put the CR18's ERD in by hand...