13,030 reputation
34897
bio website eric.eisenhart.name
location Santa Rosa, CA
age
visits member for 4 years, 8 months
seen Apr 17 at 19:26

When I'm not bicycling, I'm a Linux SysAdmin. I'm on the board of my local bicycle advocacy group.

Bikes are my primary transportation. A 2009 Surly Long Haul Trucker, set up as a commuter and a 2012 Trek Ion CX. I also take the bus, but do not own a car.

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Apr
7
comment can you use a cycle path to bypass red lights?
That photo looks like a on-road bicycle lane to me, not a separated bicycle path/track... Does it change up at the intersection?
Mar
31
comment Front rack is not straight with fork, is this normal? And how can I fix it?
If it were me, I'd start with trying to figure out which thing is not straight. Measure the eyelet distances from dropouts and crown. Take the rack off and see if it sits level when on level ground. Rest front dropouts of bike on floor and use a level to see if the eyelets are level. Measure the distance of the fork arms at the eyelets from the wheel spokes.
Mar
31
comment Front rack is not straight with fork, is this normal? And how can I fix it?
I have that same rack, and it mounted quite straight.
Feb
13
comment What make and model is this MTB with no decal (pictured)?
Click "edit" and immediately above the editing area there's a row of different buttons. Click the rectangle picture button to add an image.
Feb
10
comment Is it possible to tune a hub gear?
There's also max torque issues with rear hubs. If you go too low, you can exceed the torque the IGH is designed for. Check the docs.
Feb
1
comment What type of shoes should I get with regular pedals
See also: bicycles.stackexchange.com/questions/27402/…
Jan
5
comment What do I do if my bike won't pump with a air pump at all?
Does the pump quickly get harder to pump, or does it stay easy to pump?
Dec
8
comment Torn. Want to support LBS but they don't carry what I really want
I've found that often if I order something through the LBS, they'll do pretty well at matching the real online price, since they won't charge me for shipping. (it's just one more thing in a big order from one of their suppliers).
Dec
5
comment Is there any rule of thumb for comparing lights rated in lux and lumens?
Lux is relative to distance. That graph is based on lux at 2 meters from the light. What distance is the light in the question getting 35 lux at?
Dec
1
comment Is there any rule of thumb for comparing lights rated in lux and lumens?
For everybody else that isn't familiar with the units: lux is how brightly lit a surface is, candela is (usually) the brightness of the center of the beam, and lumens is the total light output. Candela can be converted to lux (and vice-versa) given a distance. Lumens can be converted to candela (and vice-versa) given degrees (how much of the sphere the light comes out), but most bike lights spread light unevenly.
Nov
16
comment Why are brake lights not common?
FYI, the magnic light has a bit of a "brake light" functionality, since it draws power from the rim moving past, it mounts on the brake, and it is pulled closer to the rim when you brake; so it flares brighter as you're braking. (but turns off once you're stopped)
Nov
5
comment Is there a cheap touring bike that is as light as a road bike
What do you want to mount on this bike? Racks? Fenders?
Oct
20
comment How do I stop punctures for good?
The unfortunate reality is that there is no good way to stop all punctures for good. Even the very toughest tire/belt/tube combo is going to go flat if you hit a self-tapping metal screw, sharp nail, or most other strong sharp things longer than the protective layers of your tire.
Oct
20
comment How do I stop punctures for good?
A foam tube or other airless tire or tube will be flat-proof. It will also have a high risk of allowing the tire to pull off the rim when cornering, give a harsh ride (just one small spot absorbing bumps instead of the whole tire), have increased risk of rim damage, have worse traction, higher rolling resistance, higher weight, be amazingly difficult to install, and may actually be illegal where you live. They're an outdated technology, obsoleted over 100 years ago. More here: livestrong.com/article/222689-airless-bicycle-tires-review
Sep
18
comment What is the hazard turn signal?
I often see the 45-degree point used to signal a merge...
Sep
18
comment What is the hazard turn signal?
Yes, this matches my experience. Normal stop signal for "might need to suddenly stop", point with wiggly fingers for scattered hazard (glass, gravel), or just point for a more concentrated hazard (a branch, crack, etc).
Sep
15
comment Bike too big for me
Try bending at your pelvis so that you can arch your back less.
Sep
3
comment Why don't road bikes have disc brakes?
It's probably time to update this answer. There's been an increase in less race-focused high-end road bikes ("endurance") and road-ish bikes (cyclocross, "gravel grinder", etc) with some of those getting disc brakes.
Jun
23
comment Rear wheel at edge of dropouts on a Surly Cross Check
Note from Surly's site about the current Cross Check rear dropouts: "Semi-horizontal dropouts give you singlespeed compatibility and wheelbase adjustability. Adjuster screws are included to keep your wheel in the right place for optimal shifting if you go with derailleurs."
Jun
23
comment Rear wheel at edge of dropouts on a Surly Cross Check
Welcome to Bicycles Stack Exchange! Could you please include pictures of the dropouts?