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29

As (almost) always, the great Sheldon Brown has covered this particular topic. Standing while Cycling To Sit or to Stand? It is my belief that a great many cyclists stand up to pedal much more often than they should. I've often said: "If you find yourself standing to accelerate, on level ground, it is a sign that your gear is too high or that ...


22

On or off road, but especially off road, it is desirable to be able to shift down more than one gear at a time to deal with abrupt changes in gradient and avoid being stuck in too a high a gear and stalling out. Also (as you mentioned) if you are required to slow down or stop suddenly, it's convenient to be able to drop down several gears while ...


17

I agree with Hicks sentiment that the crank "giving" is more likely due to worn parts or misalignment. The crank would have to flex a lot to actually be responsible for ghost shifting, which would make it incredibly poor quality. Sheldon's article strikes me as cursory for "When Should You Stand"... Assuming you have the gearing for whatever you're riding ...


15

http://www.landriderbikes.com They were very heavily advertised several years ago but currently they seem to show up more on craigslist than on TV.


14

There isn't really any reason you can't stand while pedaling. If your drive train is not adjusted properly then they will experience skipping or mis-shifting. That's an entirely separate issue from being able to stand up and pedal.


14

I'd go with full housing for both brake and gear cables and hold the cables on with cable clamps. There are many kinds of cable clamps to choose from. I prefer the type that have a screw clamp over the clip on type. The key will be finding clamps for your tubing diameter. If you need to have cable stops there are clamp on versions from a variety of vendors....


13

Since it only happens when you stand I would say it is definitely a combination of a worn chain and worn chainring, and nothing to do with shifters or derailleurs. As a chain wears, it 'stretches', meaning the distance between the pins in the chain grows. This is a result of the side plates wearing into the pin. Once the chain starts to 'stretch', it starts ...


13

You have a double front, right? The usual advice is to not shift into the highest 3 gears in the rear cassette when in front the chain is on the large chainring, and to not shift into the smallest 3 cogs, when the chain in front is on the small chainring. This prevents 'cross-chaining', which wears the chain fast, produces noise and difficult shifting. ...


12

If you can, with the chain in one of the middle cogs in the back, shift to each of the front chain rings then your front derailleur is likely in proper alignment and adjustment. This question and answer cover how to adjust the derailleur if you want to learn how to do it yourself. What you are describing, shifting to small ring in front and small cog in ...


12

I have ridden one - it used weights thrown out by centrifugal force and springs to move the derailleur in and out. Horrible is all I can say. Maybe it was me not being used to it, but things like not being in the gear you left it in, and less than smooth changes - which you have not idea when they are going to happen, especially under power. The only ...


11

Trek had a bicycle a few years ago named "Lime" which had 3 speed automatic gearing. I don't think it sold well. It used a gearing system called "Coasting" that was created by Shimano and actually controlled by a computer chip from signals from the front hub. "A dynamo is fitted on the front hub that gauges the revolutions of the wheel. It sends this ...


11

Depending on the year of your Giant Escape 3, it either has Shimano EF40 or EF41 shifters. Both shifters have the same User Manual which has this information on downshifting: Assuming you are talking about your rear derailleur (right shifter), to shift 1 position you need to push the lever a small amount. Pushing the lever more will cause it to shift 2 ...


10

Learning some better shifting technique may solve this. It also could be that, despite your best efforts, the derailers are out of alignment. Two questions: Is the chain falling off on the front chainring or on the rear cogs? If so, is it happening on the inside or outside? (If it's happening in the rear and the chain is hitting the spokes, this can be ...


10

Not using the upper and lower gears is a very effective solution. Stupid, but effective. Traditionally one would simply use the limit screws (at the rear derailleur, often marked L(ow) and H(igh)). Shift to the lowest/highest gear (front and rear) and tighten the screw so that it only allows the mech to move ever so slightly over the edge of the largest/...


9

An RD-5701 rear derailleur should work just fine as a replacement for an RD-6600. I've used an RD-5701 with an 11/28 cassette for the last 6-7 months with no issues, including swapping my crankset from a 50/34 compact to a 53/39 a few weeks ago.


8

Yes, there is. Shimano/SRAM & compatible seven speed is 5mm cog-to-cog, and eight is 4.8mm. Generally what you're trying to do here can't be made to work very well. There are some tricks that without any additional parts can increase the movement of the derailer, but not decrease it. Also if you have a true 7-speed-only chain (not common anymore but they ...


8

Either the L screw which limits how far the derailleur can move towards the wheel is too far in or the cable tension is too low. Try to increase the cable tension first by turning the barrel adjuster on the derailleur counter-clockwise. However, it looks like it’s already pretty far out. If it’s at the maximum you have to shift to the smallest cog (highest ...


8

To answer this part of the question: Are there any hacks or types of shifters that let you quickly shift down across the gear range Grip shifters should allow one to click through the whole range of gears in one rotation (provided that one's wrist can manage to make such a movement). The same applies to certain bar-end and downtube shifters (with no "...


8

Shimano's most recent compatibility chart is available here. Note that these are official compatibility ratings. It is fine to exceed official specs by a bit. At the rear, you can get a 10s Tiagra cassette that has a 34t cog, but it does technically require the long cage Tiagra RD. The issue was discussed here. The short cage Tiagra RD is rated for a ...


7

Intuitively, I don't think it's possible to accelerate as much sitting down as standing up, no matter what gear you're in. Yes, standing up is less efficient, but it is faster over a short distance. I'm a road commuter/tourer (straight bars), I stand up in these situations: Pulling out at a junction in traffic, usually from a standing start. The ...


7

3 basic tips Try to be predictive in your shifting. Don't wait until you really need the next lower gear to change gears. Try to do it before your cadence drops to where you're mashing on the pedals Ease up on the pedals when shifting. If you missed on the first tip, then let up on the mashing very briefly during the downshift. This will aid the chain in ...


7

The B-screw controls the body angle of the derailleur. It pulls the pulleys away from the sprockets, so you don't rub against them. If you set it in the largest rear cog (as you should), when you're adequately clear, you don't have rubbing. Its a somewhat insensitive adjustment once you clear the cogs, but the closer you are to the loosest screw value ...


6

I would have started by noting which gear (front or rear) is slipping and adjusting the tension on the corresponding shifter/derailleur to bring it closer to correct adjustment. A rule of thumb is, make the adjustment and if it gets worse then you are going the wrong way :-) If the shop changed your chain did they also change the cassette (rear gears). The ...


6

It sounds as if you adjusted the barrel adjuster out too far, the last time you adjusted it, and damaged the threads on the adjuster. When the shop cleans and lubes it, it is fine for a few days, and then gets stuck again, because the threads are cross threaded or stripped. If the damage is relatively minor, it can act normal until it is under a little ...


6

There's the Nuvinci Harmony. It uses the Nuvinci N360 CVP hub, which is a continuously variable transmission, meaning there are no shift points. The Harmony controller changes the ratio based on cadence, or it can be adjusted manually.


6

Crossing chaining hasn't been any problem at all since the invention of bushless chains 20+ years ago and wasn't even a real problem back in the ancient days. It's a persistent myth that just won't die... Your bike should leave the shop capable of shifting into any combo of gears possible and riding any amount of time you like in that gear. At most I would ...


6

Use the Clutch! This is what I always tell people when I'm teaching them how to shift gears properly. Chain-rings and Cogs are machined with *pickup points" that assist transferring the chain from one ring to the other, they only work while you're turning the cranks. So I tell people to let all the power off of their pedals, but keep the cranks turning and ...


6

I would suggest temperature change may be affecting the cable housing dimensions, which in turn affects the cable tension and therefore the dérailleur settings. I have been noticing this happening to myself this fall, especially switching to a bike with full length housing and 10 speeds on the rear dérailleur. With the large daily temperature changes in ...


6

Its likely that your bad shifting is due to messed up cables or a misadjusted derailleur. You can either cut the cable crimp off at the end of the cable with a pair of pliers, or pull it off with a pair of pliers. As for replacing the cable housing, you can either get your bike shop to cut a piece of housing of the right length by taking your old housing ...


6

I'm familiar with RSX brifters (brake and shift combo units) If that's what you have then its likely the grease has gummed up, stopping the under-lever from engaging the release. You might be able to finangle it a couple times by manipulating the underlever carefully, and you'll feel it catch. A blast in the guts of the brifter with brake cleaner or ...


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