What is your bottom bracket height? (floor to center)

You can, if you can be bothered, work it out on a frame by measuring how far below the rear drop out the centre of the BB is - then take this figure off half the circumference of a wheel + tyre.

No, I can't. :D

Bianchi Pista 57cms
290mm
700/23

278mm 700x23 58 Nagasawa

268mm on 700x23 58cm old 60's track ? (27inch wheel frame)
272mm on 700x23 56cm old 70's track ?

my fensom lo-pro road time trial frame with 700x23 is about 270mm, +170mm cranks, = pedal strike. i also get some toe overlap sometimes, makes the whole weaving between curbs and taxis just a little more unpredictable. love it.

Please make this into a list. It just wouldn't be right if all these numbers weren't arranged into a list.
List please. List. List now thankyou. Listy list list. It's list time. Please be making me a list of these, thankyou please.

53cm converted road frame (bio-racer/mannesman). 700x23. BB height 240mm (ugh). 165mm cranks, Pedal strike all the time, not come off yet.

54cm kona sutra steel touring bike. BB height 270mm. 700x28. 170mm cranks, pedal strike seems to be more often than my fixed.

Surly steamroller 490mm/ BB 270mm/ 165mm/ 700 23c
GT 490mm/ BB 295mm/ 170mm/ 700 23c
Dawes (clown bike) 540mm/ BB 280mm/ 170mm/ 700 23c

[Bike - size (centre to centre) - BB centre to finished floor level - Crank - Tyres size - name]

Geoffrey Butler - 580mm - 265mm - to update - 700c - Dammit
Unknown - 540mm - 300mm - to update - 700x23c - 3ltrum
Surly steamroller - 490mm - BB 270mm - 165mm - 700x23c - Shinscar
GT - 490mm - 295mm - 170mm - 700x23c - Shinscar
Dawes (clown bike) - 540mm - BB 280mm - 170mm - 700x23c - Shinscar

Half arsed job i know! but copy and amend! I'll do some more later.

[Bike - size (centre to centre) - BB centre to finished floor level - Crank - Tyres size - name]

Geoffrey Butler - 58cm - 265mm - to update - 700c - Dammit
Unknown - 54cm - 300mm - to update - 700x23c - 3ltrum
Bob Jackson Vigorelli - 52cm - 295mm - 700x23c - adoubletap
Chas Roberts Track - 58cm - 290mm - 165mm - 700x23c - RPM
Red hack bike. 28 cm 25 mm front tyre 23 mm rear tyre - Tommy da brick
Blue fixed single speed mbt 30.5 cm 26" wheels (559mm ISO) 2.2" tyres - Tommy da brick
Argon 18 medium - 54-56cm - 295mm - 700x23c - Tynan
Condor Pista - 55cm - 270mm - 700x23c - MA3K
Bridgestone track - 57cm - 280mm - 700x25c - MA3K
Raleigh Junk Bomber - 57cm - 270mm - 700x28c - MA3K
Cannondale Track '94 - 56cm - 300mm - 700x23c - Gabes
Large Cannondale Rush - 317mm - 26" Continental Vertical Pro's - Dammit
Cannondale SystemSix - 58cm - 280mm - 700 X 23C Conti Attack/Force - Dammit
Large Dyno beach cruiser - 295mm - 26" something or other tyres - Dammit
Conversion - 267mm - 700x23 - Fatboyralph
Mercian road/path - 56cm - 276mm - 27 x 1 1/8 - Teenslain
Sparton track - 54cm - 278mm - 700 x 23 - Teenslain
Bianchi Pista - 57cm - 290mm - 700/23 - Archi Pelago
Nagasawa - 58cm - 278mm - 700x23 - Build
old 60's track - 58cm - 268mm - 700x23 - Asseenonfixie
old 70's track - 56cm - 272mm on 700x23 - Asseenonfixie
Fensom lo-pro - 270mm - 170mm - 700x23 - Harold
Converted road frame (bio-racer/mannesman) - 53cm - 240mm - 165mm - 700x23 - fred
kona sutra steel touring bike - 54cm - 270mm - 170mm - 700x28 - fred
Surly steamroller - 490mm - BB 270mm - 165mm - 700x23c - Shinscar
GT - 490mm - 295mm - 170mm - 700x23c - Shinscar
Dawes (clown bike) - 540mm - BB 280mm - 170mm - 700x23c - Shinscar

295mm bareknuckle

i got a few questions, chaps. what length saddle rails do you have? what's the thickness of your rimtape? what's the diameter of your seatpost bolt? what's the thickness of your bartape at the ends and in the middle? how many millimetres between each indentation on your brake blocks? what's the difference in decibels pitch between the toptube ting near the headtube and the one in the middle of the toptube?

how big is your hipster ego?

massive. on a par with maggie's warmongering, community-splitting ego.

i got a few questions, chaps. what length saddle rails do you have? what's the thickness of your rimtape? what's the diameter of your seatpost bolt? what's the thickness of your bartape at the ends and in the middle? how many millimetres between each indentation on your brake blocks? what's the difference in decibels pitch between the toptube ting near the headtube and the one in the middle of the toptube?

You English teachers just don't understand the power of data.

Information is power my friend one day I will rule them all.

Can't rep you again PJ.. :(

Forum Fail.

Please make this into a list. It just wouldn't be right if all these numbers weren't arranged into a list.
List please. List. List now thankyou. Listy list list. It's list time. Please be making me a list of these, thankyou please.

Listenger.

my own made track bike, 560mm, 300mm, 23 tires.

56cm Toptube coloumbus road frame & fork. Uknown maker, but has tommassini style steel aero forks but dutch race sponsors written on it.

700x23c, 1000mm wheelbase.

245mm, BB shell centre to floor.

Is there a standard height from the floor to the centre of bottom bracket? Mine seems mighty low at the moment and i'm thinking i've made a bade choice in wheel size selection.

At current i not chosen tyres, so the bike is sitting on its rims and the centre of the bb is 235mm. I'd be running 165mm cranks.

If i've made a boob, there'll be a pair of 700c mavic opens, laced on miche deep flange, 3x on back, 1x on front up for sale!!!!!!

Cheers

Paul

https://www.londonfgss.com/thread9375.html

Bang!

You're welcome.

I have a similarily slack BB, but Ive found I the only time I get pedal strike is descending multi storey carparks.

If i've made a boob

I made a pair of boobs from marzipan once, because someone on the internet told me to.

seriously. Then I ate them.

Wish I still had the picture..

Interesting fact of the day. 'Boob' is actually 'boob' spelled backwards.