[Robin Jackson]

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

[rob crompton]

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.

[Robin Jackson]

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

[Dave Minter]

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

[Robin Jackson]

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

[guy pegler]

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?

[Ian]

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.

[Phil Byrne]

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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