Open Discussion Group

Replacement wheels for F-frame Mk2

Viewing 8 posts - 26 through 33 (of 33 total)
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  • #3459
    Robin Jackson
    Participant

    Great,
    Thanks Rob. Its great to have a tried and tasted recipe, its nice to order everything at once. I did have to google ‘laced 2x’, did you use any online resource when putting the wheels together?

    I had seen those dynamos but wasn’t so sure if I wanted that shape on an old F-frame. The weight is great though, 357g on the spec sheet. Looks like they were licensed to SON at some point as they are identical.
    http://www.sjscycles.co.uk/dynamos-hub-dept366/
    I might have to go and look at one for real.
    I had fancied the simple and cheapest shimano dynamo that was made for brompton.
    SJS Cycles Part Number: 22332
    I think that would involve changing the axle width though. Probably more hassle than it’s worth.
    I can see myself being won over by the Shutter Precision!

    Thanks Rob

    #3460
    rob crompton
    Participant

    I read around a bit, but this is pretty much what I did:
    http://www.bicyclehub.co.uk/index.php?option=com_content&view=article&id=49&Itemid=111

    Top tips:
    – if you’re using parts from the old wheels, take photos before you dismantle to refer back to.
    – do the rear first; the angle drilled holes in the rear Brompton rim help get the spokes pointing the right way.
    – use a good spoke key; I used a plastic disc ‘Spokey’ which seemed good. I think if I’d tried to use some of the other spoke keys I’ve got lying around, from pressed steel or on various multi-tools, I’d have soon ended up stuck with a set of cylindrical nipples.
    – oil each thread and/or nipple

    As for the dynamo, I can’t see a 28h 100mm OLN SP SV-8 at SJS, just the 74mm OLN for the Brompton. Maybe they can order one.

    Rob.

    #3461
    Robin Jackson
    Participant

    After taking the rear wheel apart I did think maybe I should have taken some pics 😉
    Thanks for the tips. I look forward to getting to work on them.

    I looked into the SP dynamos but it looks like they are currently only imported in 32H & 36H, £75 at the moment on SpaCycles. I have e-mailed the manufacturer to check if they have a stockist in 28H. If so then it will be a winner.

    Thanks again

    #3462
    Dave Minter
    Member

    A friend of mine sells SP dynamos in France including 28 holes. Yannig’s English is excellent.
    http://www.esprit-randonneur.fr/fr/dynamos/39-dynamo-sv-8.html

    #3463
    Robin Jackson
    Participant

    Thanks Dave, too late for me. I ordered one direct from Taiwan, hopefully it will get here some time this month. £74 including shipping.
    Spoke calculator says 149mm double laced, anyone tried with the SV-8 on a new brompton rim ?
    I noticed all the brompton wheels with dynamos look to be laced 1x though

    #3464
    guy pegler
    Member

    Hi Guys,
    I am planning to build wheels for my F Frame using a Brompton Alesa 16 x 1 3/8 , 349 silver alloy rim- 28 Hole and a Sturmey Archer FW rear hub and a Philips small flange front 28 hole hub.

    Can anyone please tell me what spoke length I need?

    #3465
    Ian
    Member

    The spoke length will depend on the number of spokes you cross (1x 2x 3x?) and is really better determined by you measuring the rims and hubs you have.

    #5801
    Phil Byrne
    Participant

    Hi, in reference to Rob’s wheel recipe, I would like to use this recipe, but with a duomatic hub. Is there a difference in flange diameter between the 4 speed hub and the duomatic? Would you recommend a slightly different spoke length for the rear hub? My front hub should have the same flange as your front hub, please correct me if that is wrong. Appreciate any advice. I am in Sydney, Australia, and can purchase Brompton parts for just over $100, which seems like good value. Thanks and regards, Phil

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