Pardon my "newbieness" ... I have searched many threads to learn more about seat post binder/clamps, and I'm still wondering if I can put a "Flip-lock" or Quick Release type seat post clamp onto a frame that has integrated seat post binders?

Specifically... a Bianchi Chrom-moly frame (Castro Valley/Volpe) with a seat post binder that tightens with an allen wrench - I'd like to be able to quick-release my seat tube instead of having to wrench it.

Is this possible? ...there is a vertical cut in the seat tube.

Thanks, in advance...

I would say in theory it would be possible, but you would likely have to make you own QR as it would be shorter than any available. plus you would have to make plugs to fill the void where the binder bolt used to be.

back in the early days of ATBs, and better hybrids alot of them had QR seat binders but, it made the seats easier to steal and nobody really adjusted their seat that much.

Yes!!!... my 92' Cannondale hardtail has a QR like that.

Ironically... I want the QR to avoid seat theft ~ I typically take the seat in with me. These days I wouldn't put it past someone to carry an allen wrench in their pocket, and with a few turns... they've got a new seatpost and seat.

I will keep searching.... thanks.

I still have one on an old mountain-bike frame from 1984. Now I'm wondering if it can be scalped and fixed-up....hmmmmm......

All of the old steel mountain bikes had them. I took them off of all of mine because I didn't want to lose expensive seatposts and Brooks saddles.

You can find them on Ebay. You can find anything on eBay. This week I bought a new broiler pan for my oven, fuel injectors for my pickup truck and and fillet brazed stem and bars for an old bike.

I have one on my 1999 Trek 700 Multitrack. I, conversely, am planning to swap it for a non QR binder, possibly one that locks.

Back in the day (" ") we used these to take off the seatpost/saddle if we were in a suspected thieving-zone. I guess too many people were too stupid to realize this - and screamed bloody-blue-lawyer when their seat etal went running away. I didn't know anyone who suffered a loss though. I guess people still used common-sense in my area way back then...

I guess back in your day people were too preoccupied with their greasy hands, scratched seatposts, and heavy seat-filled backpacks to have the time and focus to invent locking binders. People also used to die of polio and pay $1/minute for long distance phone calls. Sometimes change is a good thing.

So it seems like finding a "locking" binder would be the best bet.... I'll look for that as well. thanks!

i have an old mystery bike where i did this exact thing. getting the right length/size bolt was tough, so i went to a bike swap meet and picked up a new QR binder for $2. i threw out the collar and kept the bolt, and it works great!

if it's an old bike that you are just trying to get something to work, this is a great fix. if it's new or you want to be particularly careful of not damaging the seatpost binder, then a binder bolt may be in order.

FWIW, my old 90s era MTB came with a QR for the seat post. 4 days after I bought it (secondhand), the seat was gone. So it wasn't just paranoia!