What advance in bicycle technology has impressed you the most?

anotherkiwi

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Jan 26, 2015
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The European Union

Emo Rider

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Jan 10, 2014
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While more expensive initially, sealed bottom brackets, in their various styles, are one of the developments that impress me. This goes right along with flec's getting rid of cotter pins.
 
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jdallan

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Jan 18, 2013
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That was the later D cells version Fordulike mentioned, The original and forerunner used the Ever-Ready 3 volt twin cell battery which was in fact a pair of side by side joined F cells with brass strip terminals. There was a knob on top which when screwed down made contact with the top strip to light the bulb. Here's two of the earliest examples:

P.S. Battery photo just added below by Tommie, they go right back to pre WW2 I think, I knew them in the 1940s.

Modern gadgets! I preferred the carbide lamps on which you could warm your hands under your cape if you so desired! (No photo unfortunately)

Jim
 
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cwah

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Jun 3, 2011
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Bafang BPM motor,will power most people up most hills without the complications of crank drive.....saves £500 without downside.
KudosDave
I had 5 bpm and had 3 of them who were damaged.

- 1 from wiring issue as when you fall it's likely to damage on the axle. Repairing that is damn hard.
- 2 had damaged clutches.

So yes it does have complication!!!
 

trex

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May 15, 2011
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cwah, didn't you overfeed your motors?
 

Kudoscycles

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I had 5 bpm and had 3 of them who were damaged.

- 1 from wiring issue as when you fall it's likely to damage on the axle. Repairing that is damn hard.
- 2 had damaged clutches.

So yes it does have complication!!!
Cwah.....not sure what you were doing with them....I have sold over 1000 units only a couple with damaged gears,easily repaired.
What speed was your cutoff?
What current were you feeding?
KudosDave
 

cwah

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Jun 3, 2011
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I was going to about 25-30mph and feeding around 1700w on it.

All broke :(
 
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Nealh

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Aug 7, 2014
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I was going to about 25-30mph and feeding around 1700w on it.

All broke :(
A bit off topic now but over cooked possibly depending on the version and winding a bit like ES members with their Q's the clutch mech just can't take the extr power, Cwah's BPM could be called pulled BPM.
 

shemozzle999

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Sep 28, 2009
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Not produced yet, air cooled motors with internal impellers and external dual exhaust piping with the exhaust inlet/outlet mounted high enough to not take in water and dust, aka boiler exhausts, to keep the motor core temperature down when under high load conditions.
 
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nemesis

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Mar 14, 2011
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clipless pedals,when i was racing mtb in 1991 and shimano introduced the original spd`s it was a game changer.
 
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shemozzle999

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