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21

If you are using a bike with a derailleur the number of cogs on the rear hub will determine the chain size you will need. They are always 3/32" chains. You can get a 5/6/7-speed, 8-speed, 9-speed, or 10-speed chains. If you can't find a chain that matches your cluster pick a chain for a larger number, for example if you have an eight-cog cluster you can ...


13

I had a similar problem on my Pugsley, though it was under braking (discs) that I was kicking the wheel around in the dropouts. After talking with the guys at my LBS, I learned that I wasn't putting enough force into the quick release. They said that a good, tight, clamp should leave an imprint of the lever on your palm when you close it. It will be ...


13

There are two basic adjustments that apply to all types of rim brakes (v-brakes, cantilevers, calipers): Tension: The cable tension from the brake lever to the brakes adjusts how responsive your brakes feel. Tighten it up and both brake pads will engage sooner and the braking action will be harder. Loosen it up and braking will feel spongy and you may not ...


13

Usually when I talk about or hear someone use the term 'Master Link' they mean something like this: They are links that can be seperated without the use of a specialized chain tool to push a pin through the rollers. There are others besides those shown, one of the more common being an SRAM Power Link which looks like this: If you don't have a link like ...


12

Assuming you want the center of gravity of the bike alone (not with a rider), there is a very simple procedure you can perform yourself, as long as you have some bike (you could borrow one): For simplicity, strap the front wheel to the down tube of the bike, so the handlebars won't turn; You could also strap the brake levers in the "full braking" position; ...


10

There are many possible causes of creaking. But Deemar has the most likely reason in this case - the cranks are loose on the axle. Think about how a creak is produced. It's one item sliding over another. But instead of sliding it's repeatedly sticking then jumping. The amount of movement might only be a fraction of a millimetre. The OP would have noticed if ...


10

The correct length of a chain is irrelevant at purchase since they all come at a set length. (Usually 114 1/2" links, sometimes 120 1/2" links). In special cases, like tandems and recumbents, you may need to join 2 chains to have enough length. Sizing a chain to length for a particular bike is a set process. It does vary a bit. In the case of an IGH bike,...


10

This is not going to work. You won't permanently change the shape of the rim by just smooshing it between two concrete discs, as in order to permanently bend metal you need to exceed the yield stress of the metal and plastically deform it. This means that to bend something to a shape, it has to be precisely bent further than its ultimate designed bend, then ...


9

If your derailleur is adjusted properly, and you are slipping gears, it's usually a worn chain and rear cog. Take the bike into your local bike shop, and they can help you get replacements.


9

If it is easy to get the bike to a bike shop, it is worth asking the shop the cost of a replacement. It is not likely to be more than a few dollars. Otherwise take the old bracket to the bike shop to get the replacement to match. If the bike shop is able to do the replacement on the spot, let them do it and watch how it is done, otherwise it is not hard ...


9

These hitches don't work very well. They don't grab tightly enough, so they can twist around the bar and bump in to the wheel. As they twist they will take off the paint. They also require a lot of turns to attach and remove. I had two trailers with this kind of hitch, and 3 bikes to pull with. I bought this Burley flex connector for each trailer: I used ...


9

In theory they are more efficient. Throughout the pedal stroke your leg doesn't give an equal amount of force - ideally you want to spend most of the time pushing down with the big thigh muscles and a minimum time in the horizontal movements at the top and bottom of the stroke. Elliptical front cogs give you a more up-down leg motion, so more time with ...


9

According to this link the thermal expansion of aluminum 6061 is 13 micro inches/(inch x °F). A headset has a diameter of 1.125 inches, and circumference of 3.5325 inches. Assuming you change the temperature of the headset from 70°F (room temperature) to 0°F (typical household freezer), you'll change the circumference by 13 x 70 x 3.5325 = 3215.5 micro ...


8

Did you change the chain after the first derailleur broke? If the same chain was on and you're positive the derailleur didn't connect with the spokes, then the chain is a likely culprit. Another thing to watch out for is loose pannier straps (or anything else that could get caught in the chain and take out the derailleur).


8

I use Q-tips and a degreaser (WD40 or similar will work). Spray on, wipe off. Soaking helps cut hard to remove grime.


8

A trailer with a 100# capacity fully loaded over the axle is unlikely to cause significant damage to your bicycle frame--even using the attachment device shown for the Rhode Gear trailer, above. The "tongue weight" of such a trailer would probably be in the twenty-to-thirty pound range. Just don't load this trailer--or any trailer--with all of the weight ...


8

I'd try a screw remover like these. You'll need to either get a set or bring the bolt in to make sure you get the right size (Sears sells their own version that's supposed to be excellent). The good ones have a left-hand thread and a small cutting head to bite into the bead of the bolt; this looks like a really good candidate for a screw remover since the ...


8

While it may be possible, by creating a mechanism that shifts the chain from one freewheel to another, or disconnecting one temporarily through mechanical actuators, the hassle and engineering it would take to make happen would be outweighed by the fact that it is almost entirely pointless. A fixed gear would be your best bet as it already does that. ...


7

Are the skewers internal-cam or external-cam? Internal-cam QR skewers have more mechanical advantage and allow for more clamping force. They're also less affected by dirt and crud. If you don't have internal-cam skewers, get some. All you ever wanted to know about skewers, courtesy of Sheldon Brown.


7

I have seen this a few times where the axle is just a tad too long. No matter how tight you clamp your QR, it won't be snug enough. Did you buy the frame and build it up yourself? If it is the axle, you can pop the wheel out, remove the QR and take a file to one end or the other. Another possibility is the the wheel was built incorrectly and the axle ...


7

Ok, a number of the other responses have captured some of the possibilities here. The possible causes and fixes I can think of are: Worn Cassette, which is also usually associated with a worn chain. If this is the issue there are two key indicators that you will see. The first is that the gap between the teeth on the sprockets will look less like a "U" and ...


7

I think Shimano integrated shifters ("brifters") for the front derailleur on a triple normally have 5 indexed positions: 1-3-5 are the main positions that match the chainrings and 2-4 are intermediate spots to avoid chain rub for some chainring+sprocket combinations. If you give the front shift lever a short pull it will click once and the front derailleur ...


7

The length and number of links doesn't matter - as all chains are sold too long and you'll need to remove some links to make it the correct length for your bike. The width is critical. You need to get one that suits the number of gears on your cassette/cluster/rear sprocket (those are all terms for the same thing - the gears on the back wheel of your bike)....


7

You are correct. This is different than "regular" cables. On regular cables you pick the end you want and cut off the other. Thats because the connection on the cut-off end is usually a clamp. You run the cable under a screw/nut and tighten it down. Then you just put a cable crimp on the end to protect the cut cable However, your internal hub cable is ...


7

It depends on how you buy the brake, so you need to check whats coming with what you're buying. Typically, you get the caliper+pads+rotor+mounting hardware and buy the brake lever (which is a V-brake lever most of the time unless its a road brake in which case its a regular short pull lever) separately along with the cables+housing. In some cases though (esp....


7

That's a nice looking bike, it seems like it would be a great start for your project. The big question is whether or not the bike fits you – if it does it will be worth considering what else you could do to make the bike into a dependable commuter / day touring bike. Start by trying to get the saddle and handlebars into a position where you are comfortable ...


6

Replacing a tire isn't that hard, but it will take a few times for it to seem like second-nature. If you have a road bike with skinny high-pressure tires, you can expect that the tires will be harder to remove and replace. This is how I do it on my touring bike, offroad bikes, cruiser, and folding bikes. You'll need a pump to match the valves used on your ...


6

To add on to Mike's answer, slipping is probably due to your chain being old. As a result of your chain being old, it has probably worn down the teeth on the rear cassete (you should be able to examine it and see grooves and uneven wear on the gears you use the most). Replace both the chain and cassete, then get yourself a chain wear indicator and check it ...


6

if you are positive it's coming form the bottom bracket, and you have already R&R'd them, try using Teflon tape instead (plumber’s tape), wrap it around the cups and reinstall them - this should fix any squeaks in the BB.



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