Crank Length ?

[Woz]

There was a fashion in the 70s? for "Ankling", pushing your toe down on the downstroke.
Cuban heels perfect

And then Greg Lemond did the heel of the foot down almost dragging on the tarmac in the mid-80s.

 

[PhillB]

Interesting article.

But.. If I measure my Tibia..is is CTC or CTT?


Edit: just re-read - it is CTC

 

[Lucidone]

What about the 'Lucidone Eccentric Pedal Easy Reach' system? You can keep those retro cranks and dial in your perfect crank length with the fully tunable LEPER® system with its simple eccentric pedal spindle.
I'm also launching on an even more radical system based around an adjustable elliptical crank system, the 'Lucidone Easy Elliptical Crank Helper' - forget Biopace, now you can pedal in an ellipse and create 300% more power, 800% more efficiently and nearly 0.1% faster with 'LEECH'® technology.

Introductory offer from all reputable TV shopping channels must end soon!

 

[PanoIgano]

I agree with Woz here.

According to my height and the Sugino chart I should be using 170mm. Yet, I started with 175mm 30 years ago and the less I can go is 172,5 or then I just lose more power per pedal stroke. Or so it feels.

Once I get used to the length of cranks for me small size difference are very noticable.

 

[Betsy]

What about the 'Lucidone Eccentric Pedal Easy Reach' system? You can keep those retro cranks and dial in your perfect crank length with the fully tunable LEPER® system with its simple eccentric pedal spindle.
I'm also launching on an even more radical system based around an adjustable elliptical crank system, the 'Lucidone Easy Elliptical Crank Helper' - forget Biopace, now you can pedal in an ellipse and create 300% more power, 800% more efficiently and nearly 0.1% faster with 'LEECH'® technology.

Introductory offer from all reputable TV shopping channels must end soon!

Don't give your ideas away you fool! .. Dannii Minogue lurks RB daily.

I've got Patent Pending on 'Betsy's Giant Knee Bevel® ™ ℠" btw

 

[Lucidone]

I think we might be rather over enginerding this - what about the bio mechanical 'Lucidone Instant Massive Power' or 'LIMP' ® approach?

 

[Betsy]

If we could just figure out how to game the TikTok algorithm.. we’d be considered influencers

‘Post your leg at work is now trending’

 

[kingoffootball]

I also found the few sets of 170 mm cranks I've tried uncomfortable and actually got knee discomfort from long rides with them - could have been another factor in there though. I haven't done back to back comparisons with longer length cranks, but I have afew sets longer than 175 which I find comfortable.

 

[Betsy]

My recent knee pain didn’t actually occur during the ride but in the hours following.. even into the next day or two before it completely subsided.

The only time I’ve had really bad knee pain from riding was one year when I lived out in the sticks and we got snowed in.. I needed to get to work but a bus had jackknifed on the only road out of the village (they had to get a crane to lift it) so I took a Rocket Fab Stage1 jump bike just because it had very good tyres for snow and it didn’t matter if I fell off.
It had 170mm Race Face cranks but it destroyed my knee.. I’d ridden it as a jump bike for years in the woods without issue but never rode any distance on it.. the pain was so bad I couldn’t ride back, I had to push it all the way home through the snow with a sore knee

.. so probably down to geometry as much as crank length.

 

[bikeworkshop]

I also found the few sets of 170 mm cranks I've tried uncomfortable and actually got knee discomfort from long rides with them - could have been another factor in there though. I haven't done back to back comparisons with longer length cranks, but I have afew sets longer than 175 which I find comfortable.

Usually long cranks exacerbate knee trouble because there'slwer cadence with greater force at higher "knee angles" - the larger diameter of the pedalling circle reduces rpm at a given "foot speed"

The are multiple knock- on effects of crank length though, and we are all different.

I'm not personally a fan of the tiny crank brigade - I'd suggest 175 for a person who wears 34" trousers...