The bike that comes into the workshop most often for "the gears feel weird" is a bike whose gears are completely fine — the rider just doesn't know how to use them. Last week, three of the four "gear problems" I diagnosed were teaching problems, not mechanical ones. The cheapest service we do is a fifteen-minute conversation about shifting technique.
If you've ever felt like the bike was fighting you on a hill, or your chain has slipped off a few times, or you just don't really know what those little levers under your thumbs do — this is for you.
What gears actually do
The basics, in plain English. Pedalling a bike turns the front chainring(s). The chain wraps around one of the rear sprockets (the cassette). The size difference between the chainring and the sprocket determines how far the bike moves per pedal stroke.
- Big chainring + small sprocket: the bike moves far per pedal turn. Easy to go fast, hard to push uphill. This is your "highway" gear.
- Small chainring + big sprocket: the bike moves a short way per pedal turn. Easy to pedal, hard to go fast. This is your "climbing" gear.
Your goal at all times: pedal at a comfortable rhythm (the cycling word is "cadence" — about 70–90 turns per minute is most efficient). Shift to whichever gear lets you keep that rhythm. If the pedals are spinning so easily they feel useless, shift up. If you're grinding through each stroke like the bike's full of cement, shift down. That's the whole skill.
When to shift — five honest situations
1. Approaching a hill
Shift down before the hill starts, not when you're halfway up. Shifting under load (full power on the pedals) is what makes chains skip, jam, and break. Hill in 50 metres? Lighten your pedalling and click down two gears now. Then push.
2. Coming down a hill onto flat road
Shift up as you crest. If you're already in your hardest gear and still spinning out, that's fine — coast a few seconds, let speed wash off, then resume pedalling.
3. Starting from a standstill
Your last gear before stopping should always be an easy one. If you stop at a junction in your hardest gear, you'll do one knee-popping grunt of a first pedal stroke to get going. Habit: anticipate the stop, shift down two gears in the last 10 metres, coast in, stop. When the light goes green you're already in the right gear to roll.
4. Headwind on the flat
UAE riders know this — Al Qudra outbound on a Friday is a wall of wind. When the wind picks up, shift down one or two gears so your cadence stays the same. You'll go slower, but you'll arrive without trashed legs.
5. Bonking (running out of energy)
You'll feel this on long rides: legs feel heavy, every pedal stroke is hard. Don't push harder — shift down. Spin at a faster cadence in an easier gear. Conserves what's left until you can get fuel in.
The cardinal rule: don't shift under heavy load
The single most common cause of dropped chains, ground-up cassettes, and snapped chains in the workshop is shifting while pushing hard on the pedals. The chain is trying to walk from one sprocket to another, but you're pulling it tight — something gives.
The fix: ease off the pedals for one stroke when you shift. Soft pedal, click the lever, then return to power. Half a second of lightness. Your drivetrain will last twice as long.
Front gears vs rear gears
Most bikes have two sets of shifters:
- Left hand: front derailleur — moves the chain between front chainrings (1, 2, or 3 of them depending on the bike). Big jumps in difficulty.
- Right hand: rear derailleur — moves the chain across the rear cassette (7–12 cogs). Small jumps in difficulty.
Rule of thumb: use the right hand for fine tuning, the left hand for big terrain changes. Rolling flat with a slight rise? Just shift the right. About to hit a sustained hill, or transition off-road from tarmac? Shift the left to a smaller chainring AND tune the right.
Modern bikes increasingly come with just one front chainring ("1x" setups) — fewer gears, simpler shifting, no chain drops. Great for mountain bikes and gravel. For road and commuting, the classic 2x front is still common.
Avoid the cross-chain
Look down at your chain when you're in the biggest front chainring AND the biggest rear sprocket — or the smallest front AND the smallest rear. See how the chain angles sideways aggressively?
That's a "cross-chain." It works, but the chain is rubbing the front derailleur cage, wearing itself unevenly, and making more noise than it should. Avoid those two extreme combinations. If you find yourself in the big chainring and the biggest sprocket because you've climbed a hill, drop to the small chainring up front — you'll have the same gear ratio with a straighter chain.
Practice somewhere flat first
If you've never shifted properly, don't learn on a hill at km 12 of a Friday ride. Take 20 minutes in an empty car park or a quiet community park:
- Ride a slow circle in the easiest gear (small front, biggest rear). Get used to spinning fast.
- Click up one gear at a time with your right hand. Feel each gear get a touch harder. Cadence should stay similar — you're going slightly faster each time.
- Once at the hardest right-hand gear, switch to the big front chainring with the left. Feel the big jump in resistance.
- Now shift back down through the right-hand gears, then back to the small front. You've just used the whole range.
Five laps of that and shifting becomes muscle memory. You'll never look down at the levers in traffic again.
If shifting feels wrong
If you're easing off correctly and the gears still skip, hesitate, or refuse to drop into a sprocket — that's a mechanical issue. Could be:
- Cable stretched (common on new bikes after the first 50 km — message us for a free first service).
- Derailleur hanger bent (drop the bike, hits a kerb — even small knocks bend the hanger).
- Chain stretched past 1% wear (worn cassette teeth no longer mesh — workshop check).
- Sand in the cables (UAE special — happens after summer storage).
Message us a short video on WhatsApp showing the shift problem in action — we can often diagnose from the clip. If the workshop needs the bike, we arrange collection and return, or you can drop it at the warehouse yourself if you're nearby. AED 30–80 for a derailleur tune-up. While it's on the stand we'll also do an ABC check and tell you anything else that needs eyes on.
— Hadi, workshop
