Mosaic GT-1 650b Allroad

[NHAero]

Originally Posted by ltwtsculler91

These are 650Bx42 Rene Herse tires, and the bike was built around them to get road-ish handling with fat tires. I think I could squeeze a little bigger or knobs in there but maybe not a 48. I'm not so into extreme gravel like some, this is more to rip fire roads and packed dirt roads around here.

I think going custom does open up quite a bit on options for what works and what it clears. Justin @ Black Oak Velo here in Greenwich has put together a LOT of these 650b bikes on the AR fork for folks and they are a blast.

I think that Mosaic is knocking it out of the park with these bikes! One advantage is that they get the idea of a chubby tire road bike, vs. a slacked out gravel bike. My Bingham is similar to your bike, I can fit 650Bx42 with fenders, or 650Bx48 without, and it has road HTA and trail on the low side of normal (73 HTA, 50mm trail with 650Bx42)

[lavi]

Gotta bump this cuz the bike is so good and needs more attention.

I also roll 650b/42 (RH) on my Hampsten. Such a sweet setup for allroad beasting around.

For kicks, have you tossed any rubber in 700c on it to feel the difference, or is this strictly 650B(izness)?

[gregcarlisle23]

Nice bike

[ltwtsculler91]

Thanks Lavi, I'm still loving this thing and as NHAero has pointed out there's really something to these 650bx42s with a road geometry. Just feels so great as an all-day bike and since I've gotten this built up at the end of May it has most of my Connecticut miles on it.

It's designed for 650b so no 700s have gone on it, the Hampsten is for the fatter 700x32 road tires, and I'm not even sure I could get a 700 comfortably on the rear end.

Here's some pics from my last ride on it for the year today, had to get on the two gravel sections for extra fun

[ltwtsculler91]

My purple rain bike
Had stopped when I left this morning and the sun was slowly popping out as the wind picked up, but man is this bike fun to ride when it's wet. Between the fat tires and discs, you don't even notice the weather.

[jawnzcapital]

this is the color I had originally wanted with Mosaic, but ended up with their matte color shifting lilac. Part of me still wants this color especially in the sun like this photo is showing! beautiful