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Jan
13
comment Gear shifts and drive speed on bikes
Wouldn't 53x13 yield a gear ratio of 4.077? 53/13 = 4.077. If i use that gear ratio with your numbers it works out to 15.2 km/h, which is the same result I get with my formula.
Jan
13
comment Are presta valve cores universal?
I've snapped a few in the past. I found it helps to not unscrew the valvle completely when inflating. Usually better to just give it a couple turns to the point where when depressed the air escapes. If air can get out, air can get in, and usually unscrewing it more gives the screw a higher probability of bent and breaking off.
Jan
13
answered Gear shifts and drive speed on bikes
Jan
13
comment Windows Phone as a Bike Computer - What is the current State of the Art?
I guess turn indicators do help a bit, but are a long way off from showing actual maps with all the roads and trails. You can make up a route as you go instead of having to preload your route.
Jan
13
answered Windows Phone as a Bike Computer - What is the current State of the Art?
Jan
8
comment Why (and how) would someone steal only my innertube?
It seems that President Skroob has become more stealthy in his quest for clean air.
Jan
7
comment Is commuting 10 km on an empty stomach harmful?
Anecdotally this seems to fit with my experience. I've recently taken do waking up early and doing 50 minutes on the trainer (Zwift calculates distance at 25 km) in the morning a few days a week. I don't feel low on energy even though I do my morning rides before breakfast.
Dec
16
comment Is it OK for a child's bike to have a radially-laced rear wheel?
@JamesBradbury Appears you are right. It's a little optical illusion I guess when you view it straight on because you're seeing the spokes on both sides of the hub and it looks like spokes are crossing.
Dec
14
comment Is it OK for a child's bike to have a radially-laced rear wheel?
It looks like the spokes aren't completely radial and that there is a single crossing very close to the hub.
Dec
14
comment How far should I be able to bike?
How far and fast you can bike is also going to depend on the bike you ride. That isn't to say you need a really expensive bike, but having a cheap heavy mountain bike with knobby tires is going to be a lot less efficient than riding a decent road bike. What kind of bike are you riding?
Dec
10
comment If I currently have 700x23/25C tires on my bike, will 700x35C winter tires fit?
As a side note, the winter can be quite harsh on bikes. Especially if they put salt and/or sand down on the roads. If you have a nice road bike, consider getting a second "beater bike" for the winter so that you don't cause excess wear on your nice bike. I have a single speed that I use for the fall/spring and I've found that it's been much less likely have mechanical problems compared to geared bikes I've used in the same conditions.
Dec
10
answered Rear Lights for Aero Seat post?
Nov
26
comment Shimano 105 11 speed rear derailleur wont shift
what are you using to wash the bike? If the answer is pressure washer then stop doing that. you shouldn't need anything more than a mist setting from your hose nozzle to get the soap off. If you need to get dirt off certain areas scrub with your hands so you can ensure you are delicate around the areas that require it.
Nov
24
comment chain stay protection on carbon frames
Perhaps you could use something like a neoprene chainstay protector which goes around the entire chainstay so that you don't have to worry about it sticking to the actual chainstay.
Nov
24
comment Fixed gear cranks loosening
I've never had loose crank arms on my fixie. I also don't see how using the pedals to slow you down would have any effect that would cause the crank arms to loosen. Are you sure it's the crank arms that are loosening, or is something else happening such as the rear sprocket becoming loose (because you don't have a lock ring) that's causing the crankset to appear loose? I could see how your crank arms could become loose over time. I don't see how it could be linked to using your pedals to brake.
Nov
19
comment Why is this ring used near the Crankset?
It may be an older bike, or it may be a newer low end bike. I've seen what I thought were antiquated parts on brand new bikes. I think they use parts of older design to make sure they aren't infringing on patents.
Nov
19
comment How to assemble bike chain with no Master link?
I have successfully used a chain tool to get a pin back in after it has been removed from the chain. It's not easy, but yoyo can do it.
Nov
18
comment why does my front suspension have no spring or air valve
The helmet works better if you put it on your head.
Nov
17
comment Legs are very weak
You definitely want to be in the middle or small ring on the front, and stick to the larger gears in the back when climbing.
Nov
14
comment MTB Tyre Safe for Wet Roads
We don't normally do a lot of product recommendations here, but I'm sure some people can help you to look for what features to look for in a tire to meet your needs.