Thorn Cycles Forum
Technical => Lighting and Electronics => Topic started by: Mart on October 08, 2014, 06:19:56 pm
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Hi
Possibly a silly question, but is it possible to retro fit a Son 28 Dynamo hub to an existing standard wheel, or am I looking at a whole new wheel assembly?
Got a Raven back in June, ummed and agh'd about whether to go for the Dynamo and basically made the wrong choice, DT Swiss rim with Hope hub
Thanks
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spokes are going to be to long other than that all should be well.
but why not just buy a dynamo wheel save you all that hassle.
jags.
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We're coming into the time of the year when good dynohub wheels are cheap on German Ebay as the Continental manufacturers sell off the surplus stocks of dyno wheels they didn't build bikes with. Also look at Yatego, which is somewhat similar to Ebay. And check the big mailorder dealers: they can be cheaper than Ebay on postage.
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http://www.ebay.de/sch/i.html?_odkw=&_dcat=177831&Rahmengr%25C3%25B6%25C3%259Fe=26%2520Zoll&_osacat=177831&_from=R40&_trksid=p2045573.m570.l2632.R2.TR2.TRC1.A0.H0.Xson28&_nkw=son+28&_sacat=7294
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A SON hub dynamo isn't compulsory. For sane prices, try this lot:
http://www.ebay.de/sch/Radsport-/7294/i.html?_from=R40%7CR40%7CR40%7CR40%7CR40&_nkw=nabendynamo+26&_ipg=200&rt=nc
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A SON hub dynamo isn't compulsory. For sane prices, try this lot:
http://www.ebay.de/sch/Radsport-/7294/i.html?_from=R40%7CR40%7CR40%7CR40%7CR40&_nkw=nabendynamo+26&_ipg=200&rt=nc
From personal experience I would avoid the cheaper Shimano dyno hubs (these mostly have penultimate figure 2 or 3, like DH-3N31 and DH-3N20), they have significantly more drag than the mid to high range Shimano models and the bearings are probably inferior.
I find the mid to high range Shimano models with penultimate figure 7 or 8 in the designation are OK (from experience DH-3N72 and DH-3N80, probably also the similarly-priced ones labelled Deore, etc.).
No experience of the Shutter Precision dynamos, but they are are highly rated in tests.
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Thanks all, will look at those options. Suspect I'll go the new wheel route - just annoyed with myself for not getting a dynamo hub in the first place.
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I find having a spare wheel with dynamo to be a good option. In the summer the non dynamo wheel is all you need, in the winter you have access to lights whenever you want. I like to have rims and tyres matching to simplify the change-over.
Your "oversight" may prove to be a blessing in disguise!
Nich
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This is getting interesting. I've no dyno-wheel and have been looking at battery-powered lights. Perhaps a new wheel with hub is a better option. I'm running 26" Sun Rhynos. Should getting another Rhyno with a hub prove difficult or uneconomic can anyone suggest suitable alternatives to consider that are similarly regarded.
Thanks
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guess it depends on what king of cycling you do,
i like the odd night ride and i only use battery lights only problem there is battery life .
so if you do any night cycling get a dynamo wheel.
these short days i use the cateye battery light on the rear .
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When I fitted a Shimano dynohub (or rather Bob the Bike did !) to my RST's 26 inch wheel he used the existing spokes.
Now I'm fitting a dynohub to a 700 wheel there is some speculation from my wheel builder that I will need to buy 36 new shorter spokes as "4 crossings do not make a strong wheel"
Comments please ? (assuming you can understand what he means)
Why Shimano hubs ? - one word - COST !
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From personal experience I would avoid the cheaper Shimano dyno hubs (these mostly have penultimate figure 2 or 3, like DH-3N31 and DH-3N20), they have significantly more drag than the mid to high range Shimano models and the bearings are probably inferior.
my experience is not the same i have a shimano nexus 32, all the reviews on the web say it's crap, and is Shimanos worst dynamo, i have been using it about 4 years on three different bikes done 1000s of miles on it and it's still running fine,
it's powered two different supernova triple lights the new and old version also a supernova e3 pro (pants imo)
the tinterweb reviews say it has more drag when not being used that when lights are on! tbh i can switch them on or off when moving and can only tell the difference on smooth tarmac as the bars judder on cycle trail surfaces you'd never know they were on, apart from the screams of peds/dog walkers/cyclists stupid enough to look at them
also have an xt dynamo tbh there is no real world difference both slam out more than enough power to run supernova triples
save money on the hub and splash on the best lights you can afford, Supernova triple all the way for me ;D
see and be seen ;D
btw i bought the xt dynamo as a wheelset from germany for silly money
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The German eBay route looks interesting and cost effective, especially as my daughter can translate for me!!
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I think I have a spare Shimano / Rigida wheel ready to go in my garage. Complete with tube and tire.
I never got round to selling it before I went on tour
Let me know if your interested and I shall dig out my machete in order to find it....The Truth is Out There!
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I have a Shimano 3D72 hub and a Mavic 317 rim (I think) pre built from www.bike-discount.de, I have had it 2 years and I am very happy indeed with it. I have it linked to quality light front and 2 back from B&M again very happy with them indeed.
When I first got the wheel I made sure the spokes were the same tension and never looked at it since.
All the best.
Peter
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I have a couple thousand miles on an SP Dynamo hub. Very happy with it. I could not find a distributor in USA for it, I bought it on Ebay, shipped from Taiwan. Am using a Lumotec oval LED (discontinued model) with it. I use a battery tail light.
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Hub reviews here or as they say oop north ub reviews ere!
http://road.cc/show/review-section/hubs/9774
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Take a look at xxcycle.com for complete wheels. Built up Shimano Alfine 3D72 dynahub with a good rim can be had for as little as $US105 (not sure what it is in euro or Pd St). It's a bargain really!
http://www.xxcycle.com/wheel-hub-dynamo,en.php