Crank arm length

[Trull]

Keep a crank at arm length? wrong forum mate!

 

[Sharky]

150mm on my two fixed bikes and training gears bike.
145mm on my geared TT bike

Keith

 

[Acesand8s]

Track bikes must have a fixed wheel, 165mm cranks, and 280mm (11”) bottom bracket height
(measured from floor to centre of bottom bracket)

Here. if your riding track

http://www2.nationalcyclingcentre.com/documents/Track bike specification.pdf[/QUOT

And 700x23c tires, and bars cant be too wide, must be a normal bike geometry, and in most places can not have brakes.

 

[fossyant]

150mm on my two fixed bikes and training gears bike.
145mm on my geared TT bike

Keith

Think you are 20mm out on both

 

[Sharky]

Think you are 20mm out on both

Nope - short cranks are really good (145 & 150)

Cheers Keith

 

[totallyfixed]

I'm on 175's, perfectly fine, getting on for 50,000 miles and never grounded a pedal, you would have to be leaning over at one hell of an angle to get pedal strike. On the plus side you get a bit more leverage for hill climbing and on the down side [literally] descending gets interesting although I have managed 200 rpm which I will not be repeating any time soon.
If you are not convinced just lean your bike over with the pedal at the bottom.

 

[fossyant]

Nope - short cranks are really good (145 & 150)

Cheers Keith

Where the hell do you get them - rocking horse droppings come to mind ? You must be a short ar$e !!

 

[fossyant]

170's on my two geared road bikes, 170 on the fixed road bike, and 175's on the MTB - don't notice a difference. Got the 175's recently as they were on an incredibly cheap deal.

 

[Sharky]

Where the hell do you get them - rocking horse droppings come to mind ? You must be a short ar$e !!

Normal height. 5' 9". If anything, slightly longer legs.

Two pairs are Sinz expert
http://www.evanscycles.com/products/sinz/expert-square-taper-bmx-cranks-ec045038
And two I had re drilled by
http://www.highpath.net

Increased cadence is possible and better position with saddle 2cm higher, especially on TT bike.

Lots of discussions on the net.

Cheers keith

 

[Acesand8s]

Yes i think he either measured from the spindle border to the crank border, or is very short and has custom made crank arms...

Think you are 20mm out on both

 

[Acesand8s]

And record breaking cadence was done on a 165mm so id watch the speculation. 325 i think somewhere around there.

Normal height. 5' 9". If anything, slightly longer legs.

Two pairs are Sinz expert
http://www.evanscycles.com/products/sinz/expert-square-taper-bmx-cranks-ec045038
And two I had re drilled by
http://www.highpath.net

Increased cadence is possible and better position with saddle 2cm higher, especially on TT bike.

Lots of discussions on the net.

Cheers keith

 

[Sharky]

Photo showing the difference between my old 175mm crank and The SINZ crank at 145mm

Believe it or not, but you soon adapt to the difference and with the saddle raised by about 3 cm to keep the distance at the bottom of the stroke the same, it actually gives an additional 6 cm between the pedal at the top and the saddle, which means the legs don't hit your stomach and you can have a much more efficient pedal stroke.

I'm sure not for everybody, but as you get older things like this help and certainly helps to get in the aero tuck position.

Cheers Keith

 

[Andrew1971]

Hi all
Thank you all for the replys. I have solved the problem with the length just put different pedals on.
Then went out for a ride then the crank bolt came loose now one buggered left crank arm.
Many thanks
Andrew