I pulled together some general differences from road bike. Would be this be right for those who have gravel bikes?
Yes and no. It's one of the frustrations that with some bikes, the only way you can get wider tires in there is by making an additional purchase of a 650b wheel wheelset, some bikes do come with 650 wheels as standard though. Others, like my Kona provide large clearances without resorting to 650b.
Again, tyre choice is very personalised and specific to the region you live and ride in. After a year of riding here with 38mm tyres, I worked out that for me, the sweet spot was around 44mm. Not too fat to be sluggish on the road, but fat enough to ride through the sandy loamy soil here. My Kona has space for 50mm tyres on 700c rims, later versions of my bike has space for up to 65mm on normal 700c wheels.
- Drive train - 1x1
- Groupset - MTB series
- Casette - 11- 42
Often manufacturers will spec 1x 11 or 1x12 because the lack of front derailiuer gives room for fatter tyres, though this isn't true for all framesets. The more popular SRAM Rival 1x11 groupset that I have is in the main, a great groupset. The problem with all of this though, is that drop bar levers have a different cable pull to MTB derailiuers. The road bike derived mechs that then get fitted have a smaller capacity than their MTB cousins. So I have a 10 - 42 cassette, mated originally to a 34 tooth chainring. the resultant 25 inch granny gear was far to high to haul a loaded bike up off-road hills. I've reduced the front ring to 32 teeth, but it's still not ideal. There are work arounds and hacks to get a decent wide range cassette of up to 50 teeth and beyond, but it requires deep pockets and good bike mechanic skills. Generally a 1x groupset needs deep pockets to pay for the replacement cassettes. Having ridden one for the year, off-road though, I've found them to be brilliant and wouldn't want to go back to 2x despite the more limited granny gear.
- Flared drops
- higher bottom bracket drop
- longer wheelbase
Yep on all three counts, nice wide flared drops. I currently have 460mm wide bars and I'm pondering wider. The wide flared drops, mated to a short 70mm stem gives good responsive low speed handling off-road, but are super comfy on road.
Modern gravel/adventure bikes are quite specialised and whilst you can ride anything on mixed terrain, a bike like this is so much more capable and comfy.