smontanaro 

A recent weight weenie thread on Classic Rendezvous and my experience dunking three different frames in oxalic acid over the past week got me thinking it might be interesting to weigh and measure bare frames and forks. To that end, I created a simple spreadsheet which y'all can edit:

https://docs.google.com/spreadsheets...it?usp=sharing

Note the yellow section before entering any values. The idea is that you measure and weigh your bare frame and fork. (I cheated with my Conti, as I decided not to dunk its fork, so didn't remove the crown race. I didn't clean out the inside of the Atala's frame because I knew I had added Frame Saver once upon a time.) I didn't bother measuring the chainstays and seatstays, figuring they wouldn't add much variability to column I, the ratio of frame weight to "perimeter" length. I will add more of my frames as the opportunity presents itself. If you are so inclined, feel free to enter figures you have for your frames.

merziac

I weigh many of the bikes and frames I acquire, can't seem to weigh them before AND after I strip them, kind of like before AND after pics, can't seem to get them done either most of the time.

One thing I highly suspect is that some of our favorite delusions of grandeur are dashed by the truth of the scale, many truly iconic and thought to be light "just because" of their lofty place in cycling, many are, many aren't. Many of the one's that are, are not by very much and some are far heavier than we would ever imagine.

Not sure where my big list is right now, started a new one that only has a few and any of the completes are apples and oranges so....

SJX426 

I started with dimensions as I have already stripped the bikes down so don't have measurements for all of them. My column headers include:
Year,
Frame - Decal
HT angle
HT
Steerer length
Fork DO
Fork Spacing - duh, 100mm
Rake
Trail
TT
DT
ST
ST Angle
BB
BB drop
Rear DO
Rear Spacing
CS
SS
Rear brake bridge to Axle location at intersection of stays
Pinch Bolt
Linear Brake Bolt to DO
WB - wheel base
Sit to crank - approximate location of sit bone location on the saddle
Sit 2 CL of HB - Center of the HB or stem mount CL
Sit 2 crank KOP - I really need to think this through with the wide variation

The last three are an effort to record and duplicate saddle and HB locations. The dimensions ay also reflect comfort.
I don't have information on several columns yet, i.e. BB drop, rake, and trail.

icemilkcoffee 

You should add the tubing info too if known.

smontanaro 

Thanks, done. Note that I allowed anyone to edit the spreadsheet. That means adding columns as well as rows is allowed.

bertinjim 

If we have weights and frame dimension and material will that be enough or would you really prefer to have top tube length, etc?

smontanaro 

Not sure what you're asking. Isn't the top tube length one of the frame dimensions?

bertinjim 

True. To clarify, if all we have is frameset weight, material and seat tube height do you want us to still participate in the charting? I have those measurements for several older frames I no longer have and for which other dimensional info is impossible to obtain.

smontanaro 

Enter whatever you have at hand. I'll adjust the formula for column I (g/cm) to leave the cell empty if any lengths or weights are missing.

RustyJames 

Would imperial measurements be acceptable?

repechage

If you are a subject of her Royal Highness, Her Majestry the Queen of England.

smontanaro 

In theory, but it will break the formula used in column I.

smontanaro 

Someone named Mackers entered data for something called a "Duell Attack" which has a rather implausibly long head tube (93cm). Could you maybe re-measure and correct that?

oneclick 

Tandem?

(just kidding, see: https://jvdmeer.home.xs4all.nl/bicyc...ck%202000.html)

Mackers

Sorry, thought HT length in mm made more sense and didn't check.

smontanaro 

Thanks.

Just so everyone is on the same page, keeping the units to cm for length and gm for weight(or mass) simplifies any derivative calculations (such as columns I and J).