Good day,

i have a cromo frame that has only one set of bottle cage mount and it’s located on the downtube. I usually see as two being one on the dt and one on the st. I guess when it was built it was ment to be that way. Does that mean anything? The only markings that I see in the frame is that both dropouts are campagnolo. Just wondering if that has anything to say about the frame. TIA

It means you shouldn't go for a long ride on a hot day.

Once upon a time, there weren't any mounts on bikes. We had to improvise.

I think I had one which mounted with metal straps.

Maybe they were leaving space for a frame pump.

Actually thats what I was thinking but I don’t see any pin like shape under the tt for the pump to hold.

No cage braze-ons, no brazed-on clip for my 1973 English frame. I tried to find an image of an 'umbrella clip' for, say, a Zefal HP pump, but didn't succeed. Trust me, you don't need braze-ons. Here are a couple of alternatives:

https://www.topeak.com/us/en/product.../332-cagemount
https://www.topeak.com/us/en/product...093-versamount
https://www.sks-germany.com/en/products/anywhere/
Accessories | MINOURA JAPAN - the 'Bottle cage Holder' section
- or -, for something special -
https://www.ebay.ca/i/193023912757

The seat tube on small frames may be too short to hold a water bottle. This is exacerbated by modern, sloping top tube designs that result in a short seat tube.

If not, you can use clamps to attach a bottle cage to the seat tube or handlebars, and other mounts are available to hold bottles behind the saddle. Or a "camelback" bladder you can wear like a backpack.

In short, there are options for you to easily carry more water.

Up to the early/mid '70s, few bikes had braze-on cage bosses and only on the DT. (There were exceptions with SR bosses, but not many.) From there to the early '80s, almost all (higher end) bikes had DT bosses and many had ST bosses.

Around mid-'70s was when top tube pump locations became popular and headtube braze-on pump pegs started appearing.. Before that it was seat tube if the bike had a DT cage boss and DT if it didn't. I raced a 1976 Fuji Pro with just DT bosses. Clamped on a ST cage and used a pump peg on the top tube.

Ben

Thank you for your suggestions. Actually, I was just wondering why some frame builders decide to put just one set of mounts. Like, was there an era of frames that was produced that way, or maybe it distinguishes a frame when say if it has only one set it’s was made by a certain framebuilder of that sort or if it has two sets then it was maybe made by that framebuilder? Hope it makes sense. Ty

I think I saw an umbrella clip on the Zephal website the other day. Try the source. (A lot of the good French stuff was and is made long after the US market goes elsewhere.)

I see, so meaning this frame that I have belongs to the early 70’s era of frames. Good to know that. Thanks for the inputs!

IDK ... I would read that to mean your bike is likely not to be early to mid '70s. It was later that braze-ons became common. Those (early-mid-'70s) were bike boom years, when factories needed to get as many frames built as possible in as short an amount of time as possible. It take time to do braze-ons.

Not necessarily. I have a 1985 Miyata Seven Ten that has double butted tubes and only the braze-on water bottle mount on the downtube. Apparently the next year, 1986, saw them go to triple butted tubes and an extra bottle braze-ons on the seattube.

Cheers

I see, so it depends really on the frame makers. Mine has no markings, I only see the Campy marks on rear and front dropouts.

If you want a better idea as to what it is you can ask over on Classic & Vintage. Images taken from the drive side and of the components, plus knowing the diameter of the seatpost really help people identify classic/vintage bikes and they enjoy the challenge. Also, a serial number can helf identify a bike and tell you when it was made.

https://www.bikeforums.net/classic-vintage/

Cheers

If you're looking, here are a couple:

Twofish Unlimited - Bicycle Accessory Fasteners

I thought braze-ons in the early days used to be only on the DT because drinking wasn't taken that seriously. Sort of like if you watch pro tenis from those early years, players didn't have towels to wipe off sweat after just about every point. They weren't wussies LOL

Also some folks spend unconscionable amount of money to shave off few grams off their bike only to put second bottle of water on it.

Another way to get another bottle mount onto a bicycle on the seattube is to install a couple of Rivnuts or similar things. They look a lot like a pop-rivet but without the metal rod in the rivet and the Rivnut is thread for an M5 bolt.


Cheers

Also, I'd assume the transition era from no braze-ons to one braze-on to two braze-ons was spread over many years. Just like cupholders in cars: used to be there weren't any. Then some models had a single cupholder. Then two cupholders, Now its hard to find a car with less than a dozen...

a long stroke frame fit tire pump inside the main triangle was a common thing, in front of the seat tube, parallel to it..
Wolf tooth company makes a thing to put 2 side by side, if you need 2,., https://www.wolftoothcomponents.com/...s/b-rad-system

You can also get a Liter sized waterbottle..




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