This is a shameless attempt to save the the most advanced civilization in
history from imminent self destruction by eliminating carbon emission,
dependence on foreign sources of fuel,obesity, hypertension and diabetes.
Cycling accomplishes all those things at once and helps us develop a better
understanding of ourselves, each other and our relationship to the cosmos.

Oh, horse puckey!
I like to ride bikes, have been doing it all my life.
The rest of that crap is just a fringe benefit,
and the blogosphere gives me a chance to share my interior
monologue with virtual rather than imaginary friends.

Sunday, January 13, 2013

Chronic Retro-Grouchy(?)

   I suppose, sorta.   But I have mentioned that I do prefer a dyno powered light over  battery and even over rechargeable.  It's such a nice reliable idea, and makes you feel kind of warm and fuzzy from not using batteries and heavy metals and all that attendant crap.  What brought this up was the failure of my son's old Spanniga unit which I am replacing with a new B&M unit.  

The B&M unit is a much better piece and has a roller which can be replaced with a brush

 for bad weather riding as well as an adjustable pressure fulcrum

 to fine tune the point of contact and reduce any slippage. 
 They work really well, but the minute you bring it up, you will receive a lecture (complete with spec's, details and possibly 8x10 color digitals) explaining the revolution in dynohubs.  People get caught up in the excitement of the new and shiny without looking at the underlying function.
\   Both the dynohub and the tire driven "bottle" dyno serve the same function they produce 6volts and 3 watts of alternate current.  The differences amount to three.  Compared to a standard Deore XT hub and tire driven dyno, the dynohubs are $100+ more expensive, weigh 8 oz more and create additional drag.  I know the the drag when it is not engaged is minimal, and the proponents will place their hands on their hips and insist "it's hardly noticeable."  But I know that pose from talking about the weight of my Hunqapillar.  You  can live in denial, might demand it's not noticeable, but it's still there!  But the dynohub, like the disc brake has the advantage of being out of reach to bad weather, corrosives and moisture which potentially cause problems for tire driven devices  and rim brakes.  Well, if you commute, every day, in the dark, a dynohub is a good choice.  I don't, I just want one bike to have a totally reliable light system and I can swap this between Byron and the Hunq on a seasonal basis so the appropriate bike has it when I might need it.  I still haven't made the leap to disc brakes either.


  1. I'm toying with the idea of getting a decent bottle dynamo for one of my dynamo-less lights. The other two main bikes do have dynohubs. And yep, don't notice the drag.

  2. I haven't seen a better one on the market than the BM. I'm especially fond of the interchangeable rollers.