Just buy a longer bottle that holds twice the amount

I haven't used an under seat mount cage before, but on the one occasion I rode behind someone with one I nearly wrecked twice when the bottle ejected from the cage onto the road when bumpy road was hit. I am in the same boat, one bottle cage on one of my bikes and need an alternative. I am not sure what the colonel's exact solution is, but it sounds better. I also wonder about reaching to get the bottle and putting it back when mounted to the seat.?

Unfortunate.

My wife has raced tri's and she uses dual seat mounted bottles.

I don't recall difficulties from that arrangement.

Racing is a different situation though, as I do see them throwing empties onto the side of the road/course.

lol, the lady I rode behind in that particular ride was a tri athlete. I finally said to her she had a heck of a race strategy to drop bottles in front of others to ensure she stayed out front.

Drives me nuts when gels get tossed all over routes.

I see those things on routes after local tris.

i like my spring loaded cage, already has the mounting tabs on it. usually i wear a bike jersey and put another bottle in the rear

pocket.

Getting the bottle out while riding will be a non issue. I nearly hate to admit the things I've done while riding... adjusting helmet straps, cleaning glasses, checking weather radar on phone, transferring contents of my bottle to someone else's.

thanks for the complements. To be honest, I've never been overly drawn to colnagos but this one spoke to me. Joe Bell really made this one special.

This doesn't surprise me. The design looks very subject to the shape of the saddle rails. Fortunately, it looks like it was made for this saddle. The low profile rails give it no where to go. I have to completely remove one bolt and loosen the other a long ways before it will come out. I could see it sliding out of a taller saddle if the bolts loosen. It may be a pain, but you could put a locknut on the back side of the plate.

750ml-800ml seems to be max for a good bottle. Throwing another 500ml out back will be nice for longer rides.

this is my number 1 concern. Behind the seat hydration has a reputation for ejecting but I think a lot of it has to do with the cages a lot of these people use. I plan to test on early spring solo rides. If I loose a bottle I will look at using a rubber band or something to strap it in. I would have to get off the bike to switch the bottles, but it beats dehydrating 10 miles from home. I've done it, and made it, but it wasnt fun...

Actually it wasn't the bolts that were the issue. I tightened it down really well, so much so that it sort of bent the one of the pieces. The problem was that that it just moved along the chrome rails caused by vibration. I'm sure I could have solved it by some means, but it had other drawbacks for me so it sits on the shelf. Let me know if you could use another one.

I could see that happening. On my saddle, the bracket fills nearly the entire vertical section of the saddle rail. It really can't slide anywhere.

I don't see a need for another one but I will keep it in mind.

Now thats funny!

Doesn't surprise you though, does it? You've seen that culture....drive an hour to get a tubular mounted for $25 in labor, 4 hours to get a $120 hotel room, $450 rack on the car with a $5000 bike, $20 in food in a $200 skinsuit, and then they toss the gels all over the road, and complain when they get DQ'd for drafting. I asked one once what was going on, and she said "I spent $120 in entry fees; they can clean up the course."

Always a certain percentage of those. Still, I must admit to being happy when they get passed by unshaven folks on 80-90's road bikes.

I'll buy you one of those Bell clamp-on bottle cages, but you have to promise to use it on the 'nago.

I can't make that promise Robbie

You are not the only one infatuated with your Colnago!

I hate you!!

The OP's solution looks great. Matches the bike and the intent. These work very well for bikes that need an extra cage on the seat tube.

https://harriscyclery.net/product/eli...c9155-qc49.htm

Used one on my Ritchey

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No issues with mine, but my saddle rails are a little different, the angle of the cage seems more flat than yours. The bottom of the cage almost touches my seatpost.

Zefal Mounts on my 1972 Raleigh Competition. I used a bit of thick Protective tape first.

Thread revival

Go ahead and laugh.... I'm a fan of the Camelback. Anyhow, here's my WIP old school Coloral mount on the stem. Has a bit appearance of floating assembly. Rock solid with no brackets on the bike frame or handlebars and if I need to tweak bar degree, there's no need to fuss with the bottle bracket. The old square head nuts are ugly too, but that's the original hardware.

That rocks. That would be the perfect place for morning coffee on a townie.