4,779 reputation
1635
bio website moz.geek.nz/mozbike
location Sydney, Australia
age 31
visits member for 1 year, 2 months
seen 2 hours ago

Delphi geek, prone to automating builds, testing and swearing.


3h
comment Is there a way to hop up onto a parallel curb?
@TinKorcim I suspect the most likely failure is your rear wheel not quite clearing the curb, so you'd fall sideways with and tangled up in the bike. Which is going to result in a lot of lost skin as you slide to a halt. Which is why I'd be jumping off the bike and rolling.
3h
revised Is there a way to hop up onto a parallel curb?
added "side hop" note
4h
answered Is there a way to hop up onto a parallel curb?
21h
reviewed Approve suggested edit on Why are aero bars usually disallowed in gran fondos?
21h
reviewed Approve suggested edit on Chain Slipping?
1d
revised Rat a Tat noises coming from my bottom bracket area. Please help!
spelling undt grammur
2d
reviewed Approve suggested edit on What can be done to fix a hub that has come apart?
2d
reviewed Approve suggested edit on Can I replace my bicycle's dynamo with batteries?
2d
reviewed Reviewed Quick-release seat slipping down
2d
reviewed Reviewed Chain falling off inner chain ring no matter how L screw is set
2d
reviewed Reviewed Chain rings slip when crank is turned
Jul
24
revised How to fix V-brakes
bring pic in, fix spelling
Jul
24
comment Can I replace my bicycle's dynamo with batteries?
I must admit to complete ignorance of cheap LED dyno lights. Where I live the people who use dyno lights are apparently all willing to pay for decent ones. But how would a resistor do anything in a dyno circuit? Wouldn't it just cause the dyno to put out a higher voltage until the current was back to where it started? The old, old lights I've seen use a zener diode and a resistor across the bulb to limit the voltage. But with a battery pack that would just drain the battery through the zener.
Jul
24
comment Can I replace my bicycle's dynamo with batteries?
If the LED light is modern enough to have a standlight it's almost certainly got decent protection circuitry inside it. I'd try a 6-cell holder as well if you can and have a multimeter that can measure 500mA, because it's possible that the light will run better off a slightly higher voltage (lower current = longer battery life and 4.8V from 4 rechargables is a bit low). My IQ2 has all sorts of stuff in it, including a USB output, but it pushes the dynamo up to about 12V. I'm not going to connect it to 12V DC just to see what happens, though, it's a bit pricey for that.
Jul
24
comment Can I replace my bicycle's dynamo with batteries?
Removing the rectifier should have no effect on a modern light since the LED will be controlled by a constant-current driver circuit. You might get longer run time if the regulator part of the circuit is switch mode (or it might just run hotter), but you'd need to look at the actual light you have.
Jul
24
comment Can I replace my bicycle's dynamo with batteries?
Like @RoboKaren says, it's current that matters. And since most dynamos are effectively current sources (except the ones with in-built regulators) at one stage I ran a 5W white LED straight off a Schmidt hub dyno. It worked brilliantly since the LED needed 500mA and that's what the dyno puts out.
Jul
23
comment 2,600km on an 8 speed bike?
The Alfine 8 is pretty good for round town, but I suspect that for any long, steep hills you will want to put a smaller chainring on it. BUT that depends very much on everything Andy has asked you.
Jul
22
comment Rear hub for randonneuring - any “classic” model?
@Aushiker I'd wait until I saw the price, but I would expect it to be high. I couldn't even tell you what derailleur hubs I've used, but one generic one went well over 50,000km before it finally gave out. My special hubs are all Rohloffs :)
Jul
21
comment Solid rubber bicycle tires
Specifically Neil Fein's answer. FWIW where I worked we refused to fit them after the first time - they're a huge PITA to fit, and people balk at $100+ per wheel labour costs.
Jul
21
answered How can I tell if I have properly patched a tube? (specifically a 2" mt. bike tube)