kennyc23

I am planning to buy a carbon road frameset to build a hybrid. What kind of frame would you recommend?

also thinking to use tiagra 4700 groupset but there are only 10spd. Do you know if there are 11spd groupset preferably with larger crank?

tyrion

I recommend a Specialized S-Works Tarmac frame:

https://www.specialized.com/US/en/s-...ext=70618-0149

You'll have the best hybrid on the block.

coopman

And the emptiest wallet.

hokiefyd 

I was going to say, you'd definitely have the most expensive hybrid on the block.

DorkDisk

Depends on the block; recently met a woman riding a purple Richard Sachs around Central Park. Turns out, she knows nothing about bikes. Someone once told her Sachs made good bikes so she got one to ride around on; the bike was in pristine condition, with DuraAce 9sp that reveals its age. Many, many people have very, very expensive bikes around here just to tool around on. And I see nothing wrong with that.

fietsbob

I recommend looking things up on the internet yourself *

you found this on the internet want tiagra ? go for it there was a Fitness group, but aimed at Europe
road chainrings road derailleurs, If you use friction shifting the front, lots of mixing works..

Titanium bolts are lighter than steel but nothing is lighter than a part not installed..





...

fietsbob

You could just buy a top of the range Trek* FX carbon frame & fork , but You will be waiting for the supply to return,
Pandemic is effecting world wide trade./
* or Specialized, etc.. same situation..

Helderberg

You could start with a Synapse disk Carbon flat bar and swap out the mech for what you want. Good frame and not a ridiculous base price. Even if you leave the stock "assortment" of drivetrain parts you would have a good bike. Just a thought as to where to start and build from.
Frank.

FoldingSpace

For various reasons I can’t ride a road bike position/drop bars and actually always put a riser on my stem- but what the OP is suggesting a exactly what I wanted to do years ago for the AIDS ride- plan was to get a gt road bike as a starter donor and basically turn it into a hybrid - I ended up getting a Gary Fisher Mendota (that I loved dearly) but it was weirdly difficult to get bike shops to help me- there was real resistance to “ruining “ a road bike like that.

I always felt like i was getting road bike times and performance from my hybrids but with way more comfort and utility (subjective of course but with some objective measures)

curious to see how the OP bike shapes up but I am also marveling at how Covid sorta put the hybrid at the top of a weird pile.

Mojo31

Covid got old people like me looking for a way to go outside and do something since all travel plans were basically screwed.

PDKL45

Making a light, fast hybrid from an existing road bike makes a lot of sense. Buy any road bike you like and change out the handlebars, stem, shifters and brake levers. Order appropriate flat bar road shifters (Shimano or Microshift) and road brake levers, as well as a new stem to suit your desired riding position and a new set of bars. The STI levers from drop bars are wildly expensive and you can fund the entire conversion process from the sale of the STI levers that the bike came with, especially if they're in pristine "take off" condition, something that I have done in the past.

Aladin

Something dropping off a turnip truck.. this idea. Just nonsense.

See Gravel bikes... see 29er w 27.5 light rubber.. but using a carbon rd frame defines stupid. Sorta Forrest Gump territory.............

pierce

yeaj, for a road-to-hybrid conversion, I'd as soon use a decent vintage steel frame,preferably one that was more of a touring bike, and less of a criterium bike (longer wheel base makes for a cushier ride)

but the frame geometry of a road bike is designed around you being bent over... for a flat bar bike with a more upright riding position, the tube lengths and fork angle/rake are likely all wrong.

when I built up my hybrid, I went through a dozen different stem lengths and angles before i found the right place for the flat bars, and then I kept trimming a half inch off each end of the flat bars til I got the bar width where I wanted (they are about 530mm wide). I'm using Ergon GP3 grips so I can alternately ride with my wrists rotated.

Flat bar shifters and brake levers aren't very compatible with the stuff on road bikes either, My hybrid started with an alum hybrid frame, so it has mountain style gearing, and v-brakes, which are much easier to find flatbar controls for. I'm using a 3x8 drive, rather than a compact 2x10 or 2x11, I settled on a 48-38-28 crankset, with a 13-26 8 speed cassette (I think its "V"?) that gave me just the right range of gears for the speeds I can sustain. you'll probably find that in a more upright riding position, the taller gears on a high end road bike just don't cut it due to wind resistance. I'm running some high TPI Vittoria randoneur tire they don't make anymore, 700x32, very low rolling resistance, and a nice cushy ride, and I can get by ok on gravel and hard pack dirt, too.

PDKL45

The tube length issue depends on how you want to ride. If you have a bad back and want an upright position, a drop bar frame is perfect to reduce reach. You can use an upright stem like an Ergotec High Charisma and bars, like Ergotec Moon Cruiser 31.8 bars, to address issues of stack if the bike came with a cut steerer tube.

Most groupsets up to Tiagra have flat bar shifters. For 105 you can use (as of late 2020) SL-RS700 shifters. Refer to bikes like the Merida Speeder (https://www.merida-bikes.com/en/bike/2051/speeder-400) or the Giant Fastroad to see how they're being shifted with Shimano flat bar levers or check out Microshift (https://www.microshift.com/en/).