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Dec
17
comment Rear sprocket slips
This is a "coaster brake". Generally they are pretty trouble-free, but can get mucked up sometimes. (And, I suppose, there are cheap ones coming from China that fall apart.) If you're mechanically inclined, take it apart. (I was doing this when I was 6.) If not, take it to a bike shop. There are only 3-4 basic designs, and you can find diagrams for most on the Internet.
Dec
17
comment What are the advantages of filling tires with Nitrogen instead of air?
Here's the Straight Dope. The biggest advantage is less chance of fire if your brakes overheat going downhill.
Dec
17
comment What are the advantages of filling tires with Nitrogen instead of air?
You'd have a hard time convincing me that any of that was "significant" -- that the effects were even measurable. And even if you do manage to reduce tire wear slightly you can buy a lot of tires for the $1000+ that a nitrogen generator costs, or the $10 a pop service stations charge.
Dec
17
comment Do studded tires make less than ideal railroad crossings worse?
I'd be more worried about the stud sliding on the steel rail than anything else. But at least it used to be that studded tires were designed with the studs on the side, so they wouldn't engage unless you were tilting the bike.
Dec
17
comment Why can't the gear ratio be something like 100:1? Is it practically possible?
@R.Chung 18" is pretty small. Presumably this was some sort of recumbent?
Dec
17
comment Why can't the gear ratio be something like 100:1? Is it practically possible?
The first such record was set about 100 years ago riding behind a train. Carpenters had fitted the track between the rails with wood planks to ride on, and the cyclist rode behind a special passenger car that had an extended platform with wind breaks on each side. I vaguely recall that the record achieved was 60 mph.
Dec
17
comment What are the advantages of filling tires with Nitrogen instead of air?
The advantage is that it makes money for the guy who sells the nitrogen. It also give stupid rich guys something to brag about, when they bore of talking about their carbon frame, et al.
Dec
17
comment Why can't the gear ratio be something like 100:1? Is it practically possible?
To get 100x he'd have to have a 1100 tooth chainring.
Dec
17
comment Why can't the gear ratio be something like 100:1? Is it practically possible?
Well, absent a special geared hub to get 100x you'd have to use an idler shaft and two chains, but if that's what you want then have at it. Some weirdly high ratios have been used when setting speed records, running behind a vehicle to break the wind.
Dec
14
comment Do road tubeless tyres lose air faster?
@imel96 - The "pop" is certainly normal for tubeless auto tires.
Dec
13
comment How to securely connect cable to AXA Quattro dynamo?
Well, it's impossible to tell what you've got there, but it sounds like it was not properly assembled.
Dec
13
comment How to securely connect cable to AXA Quattro dynamo?
Isn't there any provision for strain relief? And isn't there an overall cover for that end of the unit?
Dec
13
comment How to securely connect cable to AXA Quattro dynamo?
Can't tell for sure from the photo, but it looks as if there are a couple of screws there. One would think you're supposed to loosen a screw, slide the wire under, and then tighten.
Dec
13
comment Which spokes should I get for an Expresso Coaster Brake with a Velocity Deep V 700c
Of course, the other solution is to buy the spokes long and invest in a threading machine.
Dec
13
comment Building a 36er bike
Where do you find tires and wheels for such a thing?
Dec
13
comment Shifters and internal gears
The shifters for internal gear hubs are pretty much specific to those hubs. However, it appears that Shimano makes a couple of different twist shifters for the unit, plus a "rapid fire" pushbutton unit. The "rapid fire" unit might be adaptable to a drop bar.
Dec
12
comment Lock nuts on new hubs seem strangely tight, but can't seem to loosen them. Any advice?
@joelmdev - Of course, with the nut where it is all preload should be removed from the bearings and the wheel should spin freely. If not then the problem is not preload.
Dec
12
comment Lock nuts on new hubs seem strangely tight, but can't seem to loosen them. Any advice?
@AmatiaLily -- Bike repairs always require a bit of patience, but with the right tools getting the nut loose is literally a 10-15 second job. If it takes much longer you're not doing it right.
Dec
12
comment Do road tubeless tyres lose air faster?
On auto tires, at least, the tire itself is not particularly good at holding air. Rather, "tubeless" auto tires have a tube of sorts -- a layer of relatively soft yet air-resistant rubber -- laminated to the inside of the tire casing. I would assume the same is true of tubeless bike tires.
Dec
11
comment Lock nuts on new hubs seem strangely tight, but can't seem to loosen them. Any advice?
Uh, you appear to be "loosening" both nuts together, and, as you found, they do not get any looser. You need a "cone wrench" to hold the cone nut from turning while you loosen the locknut. If you don't want to buy cone wrenches (not terribly expensive) then take it to a bike shop and they'll have the nut loose in about 15 seconds.