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A cheap solution is a wall-mounted bike holding stand. The simple ones are just a couple of prongs that stick out from the wall and support the top tube of your bike. Something like this is $US40 or y …

Note that quite a few recumbent riders do this, because the gears where this is a problem are not really useful gears. … Some of the answers on "cross chaining" talk about why those gears don't matter (they duplicate other gears from different combinations of front and rear cogs). …

Almost certainly the gear cable has come off the hub at the point where it's adjustable. Without knowing which make and model of hub you have I can't be more specific than that. If the bike is new tak …

It's quite possible that your long-term shifting problems stem from this - when you put the power in your frame flexes, the cable routing changes a little, and the gears shift. … Especially if you're a heavier rider who tends to push big gears, you put a lot more stress on the frame than an average rider. …

Short answer: yes, but a Rohloff works for me. I've been riding a Rohloff-equipped RotoVelo on and off for a couple of years now. I did play with the gearing a little when I got it and it's pretty us …

Shimano wants 14.2mm of cable pull between gears 1 and 2 where the two Torpedo-compatible hubs want 14.0mm and 13.8mm, then between 2 and 3 it's 7.8mm vs 8.7mm and 7.7mm, which suggests that the tolerances …

They typically use fewer than the maximum number of gears because of the overlaps, but from memory they do give more than just one gear per rear cog. … Using that diagram above to help me think, if you had a 9 speed close ratio road cassette you'd have three gears per chainring: chainring / cog = ratio 9 speed 12-23 10 speed 12-30 …

A quick check around the interwebs (http://www.lmgtfy.com/?q=chain+drive+rpm+limit) took me to this site: http://www.practicalmachinist.com/vb/general/roller-chain-sprocket-rpm-210682/ It looks very …

The Rohloff alternative is both less likely (because we have seen Rohloff hubs do 100Mm trips quite often already), and less terrible (because you can convert back to derailleur gears or even single speed … Schlumpf had a problem at one stage with their sintered gears shattering in use (I experienced that), largely because they underestimated just how much force was involved. …

According to this site the ratios in the hub are 0.73,1,1.36 giving 1.86 between high and low gears. … Rather than just having two overlapping gears from two chainrings, you now have 6 or 9 overlapping gears in much of the range (so there's lots of ways to get a given gear ratio). …

Those are just gear cables, you will need to buy brake cables and outers. Good on you for building it yourself, it's definitely do-able with a modicum of skill and even with limited experience. But.. …

For a generator you will probably want two sets of gears. Cyclists normally pedal at about 90-110rpm, and getting a small generator to work efficiently normally means spinning at 1000's of rpm. …

Straightening your trunk opens your lungs, increasing your aerobic capacity. The effect ranges from trivial on the more upright position bikes through to fairly dramatic in a TT position. So standing …

Derailleur gears don't work well when the chain is going from the inside at one end to the outside at the other, as below. … (via Wickworks) Second, Adjustment Once you're using the gears properly it's usually possible to adjust even old, cheap parts to work tolerably. …

That bike with two chainrings and 11 cogs on the cassette has 2x11 gears = 22, rather than just 11. … In this case that means 3 chainrings times 7 cogs = 21 gears. …