Will an Alivio M405 or M410 (3x8) brake/shifter work with a Tiagra derailleur and side pull brake?

Here's the project: I have an '02 Specialized Allez I want to make into an upright w/new head and flat bar. But I don't know if the Alivio shifters/brakes will work with existing Tiagra derailleur/brakes. I'm hoping someone might be able to point me in the right direction.

I have a Sirrus but it's a larger frame. Since I already have an '05 Allez and haven't been able to sell the '02 I thought I'd turn that compact frame into a hybrid.

June - Project cancelled, bike sold. Bought a Roubaix SL3 Expert.

Maybe. Cable pull is your main concern. If the brake levers are non linear pull they will work. Your front shifter will not work with a road derailleur due to different cable pulls. You can either get the road front derailleur for MTB shifters or flatbar road shifters

As mentioned, it will work with the rear derailleur, and a road FD should be pretty affordable. But, if your shifters and brake levers are integrated, they are probably set up for linear pull brakes.

For some brake levers that are adaptable for both, the difference is the point where the cable connects to the lever.

I have seen brakes that work on both, that basically have a method that allows for using either attachment point.

I can't find a diagram online, but depending on the lever, there might be a way to get your brake levers to work with caliper brakes... not an easy way, but maybe a way.

I will keep looking, but if you can take a picture of your brake lever with the lever actuated so we can see the attachment point, I may have a suggestion.

Here are some photos. My thinking was to use this compact frame and without too much expense make it into a flat bar since I already have an '05 Allez. I also have a Sirrus Hybrid, but since this '02 hasn't sold - I'll make an upright.

I've seen levers that work with both,but never brakes. Do you remember which model they were?

I can't imagine how. I had a friend do a drop bar conversion where he mixed brifters with V brakes;it worked,sorta,but he had to pull the lever all the way to the bar. I also had a bike come into my clinic where someone had mixed long-pull levers with caliper brakes. I adjusted the brakes as tight as I could(the rim wasn't perfectly true,so there was rubbing),but no matter how hard I pulled the lever,the bike would just slow,not stop. The owner wound up getting the proper levers.

Short-pull levers to long-pull brakes can be fixed with a Problem Solvers pulley,but I can't see how long-pull levers would work with short-pull brakes.

To put a fine point on it,we're talking about brakes here. This is a critical system that should not be cludged. I highly advise the OP to much the levers to the brakes.

I need to slow down and be clearer, and probably read more carefully too. I was talking about flat bar brake levers that can be used for caliper or v-brakes... I definitely agree on the critical nature of braking.

Several of my flat bar brake levers are drilled for v-brakes only, but you can tell by looking at them where to drill for caliper brakes, but after thinking about it, by the time you drill, and drill out a rivet, and put in a new rivet in the new location, it is probably prudent to just buy new levers.

Yeah,I've worked with those. I've had two bikes come into my clinic where the levers were set wrong for the brakes. One was a $3k+ Rivendell,that one blew my mind. All that money and they couldn't take 5sec to make sure the brakes worked right.

Just so I can keep up with the conversation - is a standard STI (road bike) brake a long pull, and flat bar style short pull?
ie. Caliper's = long - V-brakes = short (?)
Confused minds want to know.

Standard brifters(Shimano STI,SRAM Doubletap,Campy Ergo) are short pull. They make drop bar levers that are long pull,but I've only ever seen brake levers,no brake/shifter combos. Flat bar levers can be either short,long,or adjustable. Shimano makes flat bar shifter/brake lever combos that have a sliding piece that changes the pull,Tektro makes levers that have two different cable holes for different pulls.

Thanx for the input. Good to know.
This is all moot now since I sold the bike. I still have 3 bikes, Hybrid (my fav), Road, and MTB. Got it covered.