That is not going to work on 99.9% of other bikes.
First off, head tube height is unique to all bikes and sizes. There is also uniqueness in how the headset bearings are integrated into the head tube and fork crown race.
To illustrate, it is rather difficult to determine what size some bikes are in a bike shop. The manufacturer does not always attach a decal that says the size. In the old steel days, it was standard to measure the seat tube to determine the size. With aluminum and composite bikes came compact geometry. Compact geometry enables fewer sizes to accommodate a larger range of human anatomy. This is the real reason why bicycles diversified into niche activities beyond basic mountain bikes like enduro/XC/downhill, and specificity like road race/endurance, and separation of triathlon/time trial bikes. Compact geometry makes the traditional method of measuring the seat tube much less clearly defined. Most bikes embed the size and model year into the serial number on the bottom bracket, but the methods are different and some use codes you must already know, like few actually say the model year outright.
This is why, in all three of the bike shops I managed, I used the head tube height in the description I made in the point of sale system entry for each bike. There was only one exception that I recall. It was an Orbea mountain bike where they used the same size head tube for two different sized bikes. The difference is only a few millimeters in most cases, but when anyone measures this with a ruler, the head tube is absolutely deterministically definitive of size unlike any other measured dimension on a bike.
I said all of this because if I just told you trust me, and you’re anything like me, you’ll still have your doubts.
I did this for years in the shops, had staff trained on this principal for inventory management, and kept a small metric ruler beside each register in the shops for this purpose. Before I did this, there were several instances of people buying the wrong size and employees selling the wrong item from the POS system due to confusion. I spent days at the end of my first year tracking down all of the errors to properly close the books on inventory without manually adjusting things I could not account for with physical merchandise. Measuring head tubes was my solution to reduce these errors. I never had more than one or two mistakes to account for in the 3 years that followed.
In the old old days of steel bikes with 1in steer tubes and external headset cups, something like this mount might be possible, (if it came in an enormous range of head heights). In the early 1990’s, headsets moved to ever more complex setups. The integrated headsets of today are nearly if not totally proprietary to the respective bike. So this won’t work either. I could go WAY too far in depth here too, but this is already too long. GL. Let me know if you have other questions or whatnot.
That is not going to work on 99.9% of other bikes.
First off, head tube height is unique to all bikes and sizes. There is also uniqueness in how the headset bearings are integrated into the head tube and fork crown race.
To illustrate, it is rather difficult to determine what size some bikes are in a bike shop. The manufacturer does not always attach a decal that says the size. In the old steel days, it was standard to measure the seat tube to determine the size. With aluminum and composite bikes came compact geometry. Compact geometry enables fewer sizes to accommodate a larger range of human anatomy. This is the real reason why bicycles diversified into niche activities beyond basic mountain bikes like enduro/XC/downhill, and specificity like road race/endurance, and separation of triathlon/time trial bikes. Compact geometry makes the traditional method of measuring the seat tube much less clearly defined. Most bikes embed the size and model year into the serial number on the bottom bracket, but the methods are different and some use codes you must already know, like few actually say the model year outright.
This is why, in all three of the bike shops I managed, I used the head tube height in the description I made in the point of sale system entry for each bike. There was only one exception that I recall. It was an Orbea mountain bike where they used the same size head tube for two different sized bikes. The difference is only a few millimeters in most cases, but when anyone measures this with a ruler, the head tube is absolutely deterministically definitive of size unlike any other measured dimension on a bike.
I said all of this because if I just told you trust me, and you’re anything like me, you’ll still have your doubts.
I did this for years in the shops, had staff trained on this principal for inventory management, and kept a small metric ruler beside each register in the shops for this purpose. Before I did this, there were several instances of people buying the wrong size and employees selling the wrong item from the POS system due to confusion. I spent days at the end of my first year tracking down all of the errors to properly close the books on inventory without manually adjusting things I could not account for with physical merchandise. Measuring head tubes was my solution to reduce these errors. I never had more than one or two mistakes to account for in the 3 years that followed.
In the old old days of steel bikes with 1in steer tubes and external headset cups, something like this mount might be possible, (if it came in an enormous range of head heights). In the early 1990’s, headsets moved to ever more complex setups. The integrated headsets of today are nearly if not totally proprietary to the respective bike. So this won’t work either. I could go WAY too far in depth here too, but this is already too long. GL. Let me know if you have other questions or whatnot.