13,495 reputation
21752
bio website
location Porto Alegre, Brazil
age 36
visits member for 2 years, 11 months
seen Aug 20 at 11:11

I ride non-stop since I am 4, my father gave me one bike each 4 years until 18. Since then I am changing components and assembling new bikes. Now I have seven, including tandem, home-made recumbent, fixed gear, city-bike with generator and internal-gear-hub, freeride full-suspension.

I have been bred on XC mountainbike (raced a bit), and enjoy technical terrain, as well as light freeride, randonneuring, and touring. I also like to try to smoke my friends and acquaintances on group rides (and so do them).

I tend to do my own assembling and mainteinence, and am known among friends for a natural willingness to solve mechanical problems "in the field", even those not on my bike. I like to read about deep intricacies in bicycle mechanics, being a strong fan of a lot (but not all) of Sheldon Brown approaches.

Recently, I am engaged on bike as transportation, bike advocacy, and political-related-bike-issues, and participate in a lot of local groups, mostly nightbikers, weekend rides (not club rides) and Critical Mass.

My short-term bike-related goal is to have equipment and energy to commute all-year round (my winter is very rainy), and my long term goal, more like a dream, is to be full-time involved with bikes, professionally (most probably designing/manufacturing or selling stuff).


May
8
comment Disabling back-pedal brake
Is there a WIRE activating the brake? Shouldn't the very backpedalling activate the brake, without need of a wire and a lever? Confusing...
May
7
awarded  Populist
May
7
comment Is cycling better than walking to lose weight?
Never forget the possibility to use the bike BEYOND your commute, since once you get minimally fit, you could get really far and/or really fast, having the bike as an extra, "free" tool to exercise (besides being an utilitarian mean of transportation).
May
7
revised How to get back on the road again?
added 33 characters in body
May
7
comment How to get back on the road again?
Yeah, the roads I ride with these conditions have a ramp caused by new asphalt only on the main road, not the side lane. I'd say lightening the weight on each wheel going over the ramp is important, but I find a bunny hop is too critical if the traffic is that heavy as described.
May
7
answered How to get back on the road again?
May
7
comment Formula to calculate Single Speed Chain Length from Chainring Size, Cog Size, and Chainstay Length
(well, actually you have to get the radius from number of teeth, but that is "natural" too...)
May
7
comment Formula to calculate Single Speed Chain Length from Chainring Size, Cog Size, and Chainstay Length
Actuallly it's just move things to the right side of the equation, leaving "L" (chain length) isolated on one side.
May
7
comment Formula to calculate Single Speed Chain Length from Chainring Size, Cog Size, and Chainstay Length
And, just in case you want to find the "magic gear" for a vertical dropout bike, I think it's risky, since minor variations on the parts themselves can make the chain become too tight or too slacky... Not to mention the ideal length will quickly vanish as the chain wears out. (well, just a thought)
May
7
comment Formula to calculate Single Speed Chain Length from Chainring Size, Cog Size, and Chainstay Length
And if you want a still more technical explanation: math.stackexchange.com/q/123361/27435
May
7
comment Formula to calculate Single Speed Chain Length from Chainring Size, Cog Size, and Chainstay Length
I have made a strikingly question before, although I wanted to find chainstay length while you want to find number of chain links. Should this count as a duplicate? bicycles.stackexchange.com/q/8608/2355
May
6
comment Bike type suggestion for packed limestone trails
Knobby, fat tires (2.0 and up) should do with any bike, even without front suspension.
May
5
answered When is a child ready to switch from scooting to pedaling?
May
4
comment Why are single-speed bikes with disc brakes hard to find?
@Kaz I guess for manufacturer it's way easier to get a PAIR of OEM brakes (discs, calipers, lever), than just a single one. Maybe in the future more manufacturers take advantage of the "front-only-brake-single-speed-bike", but I'm afraid this won't happen for now.
May
4
awarded  maintenance
May
2
comment Continuous Peloton
That's a whole new perspective, and there is science in it! +1
May
2
comment Continuous Peloton
Three riders would be enough if you use a Globe of Death instead of a regular track...
May
2
comment Continuous Peloton
@DanielRHicks +1 You should put it into an answer, the harmonics part is the key reason why that would not work (unless the riders work in a circus and have coreographic skills).
May
2
comment Running one wheel with clincher and one with Tubular
If I understand you right, one of the concerns is "can I run different tires on a bike?" and the answer is YES, the tires are totally independent from one another and this can even be used to "tune" the behaviour of the bike, either on an off road, according to personal preferences.
May
1
comment Is there a reason why one's calfs would ache on a Turbo or Spinner, but not when riding on the road?
@DanielRHicks well I must assume it would still be rare, since all my friends for decades have been cyclists, and there were all sorts of "go-all-the-way"-freaks among them. Never seen or heard anything even closely related to that... I guess you have to go REALLY beyond all limits to damage the muscles like that (I guess fatigue and hunger comes much faster...)