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So many springs on my bike

Old 11-27-23, 07:26 PM
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ScottCommutes
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So many springs on my bike

Recently I surprised myself counting up the number of springs on my bike. I've got two springs in the quick releases. Four springs in the brakes - two more in the levers. Two springs moving derailleurs. One spring tensioning the chain. One little spring in a cable end adjuster. I think I have 12.
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Old 11-27-23, 09:19 PM
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SurferRosa
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Now count the bolts!
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Old 11-27-23, 10:04 PM
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Unless your QR skewers are odd you have 4 springs between the ft and rear ones.

Years ago a wholesale supplier (BBP?) had a post card made of a bike taken completely apart, down to each side plate, pin and roller for the chain links. They had counted some hundreds of bits, about 1/3 to 1/2 being in the chain. Today's bikes with indexed levers and multi pivoted brakes likely see that proportion in reverse. Andy
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Old 11-28-23, 03:19 AM
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I quite enjoy doing these sorts of thought experiments. The other day I was walking my 9yo to school and we started talking about the number of computers we have. You'd be surprised by that too. It goes way beyond desktop, laptop, phone and tablet. The washing machine, dishwasher and central heating are all computer controlled, Then there's Edge cycling computers, Di2, watches and FitBits, car injection system, satnav and doubtless other auto systems, TV, streaming players, BD player, cameras, camcorders, broadband routers, Amazon Echo - I doubt even that list has really scratched the surface.
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Old 11-28-23, 04:05 AM
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Originally Posted by ScottCommutes
Recently I surprised myself counting up the number of springs on my bike. I've got two springs in the quick releases. Four springs in the brakes - two more in the levers. Two springs moving derailleurs. One spring tensioning the chain. One little spring in a cable end adjuster. I think I have 12.
Your freewheel or cassette has two (or, more likely, three) springs, too.
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Old 11-28-23, 06:59 AM
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Andy touched on this--trigger shifters have several torsion springs, large lever return and small ratchet pawls.

And that's just coil springs. Grip shifters have a leaf spring. Seat rails are leaf springs of a sort.

Decades ago a friend walked around his house at night counting LEDs. That number has grown.
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Old 11-28-23, 08:48 AM
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Let’s blur the line….
Tires have a spring like quality to them.

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Old 11-28-23, 09:21 AM
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And then there's spokes, their tension levels and whether they have an actual coiled spring in them. Andy
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Old 11-28-23, 09:37 AM
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Old 11-28-23, 10:25 AM
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Originally Posted by andrewclaus
Decades ago a friend walked around his house at night counting LEDs. That number has grown.
Seasonally appropriate observation, Mr. Claus!
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Old 11-28-23, 11:34 PM
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Originally Posted by Trakhak
Your freewheel or cassette has two (or, more likely, three) springs, too.
Cassettes have springs? The ones I bought from Shimano and Prestacycle do not come with any, and I don't see any when I uninstall or reinstall them? Are you talking about the crush washer behind the lock ring?

Originally Posted by andrewclaus
Decades ago a friend walked around his house at night counting LEDs. That number has grown.
The number of LEDs counted by the same friend or the number of friends counting LEDs?
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Old 11-29-23, 03:05 AM
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Originally Posted by SoSmellyAir
Cassettes have springs? The ones I bought from Shimano and Prestacycle do not come with any, and I don't see any when I uninstall or reinstall them? Are you talking about the crush washer behind the lock ring?
Pardon. I was, of course, referring to the freehub of a cassette-style hub.


Last edited by Trakhak; 11-29-23 at 03:09 AM.
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Old 11-29-23, 08:06 AM
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Anyone brought up clipless pedals yet?
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Old 11-29-23, 04:53 PM
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It's worse -- or better, depending on your perspective -- than you even know. Every part on your bicycle that flexes and returns to its original shape is a "spring". Some are coil springs, some are leaf springs, some are gas springs, and some are other types of springs, but they are almost all springs.
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