Advice on 1x gear ratios please?

Arequipa

Hi,

I hope you had a nice Christmas.

I am looking at building up a commuter/gravelly spec road bike with a 1x group set... Maybe even go for electronic gears.

I ride a compact group set on my other endurance road bike, with 50/34 chainrings and 11/32 cassette.

Can any of you advise me if there is a front chainring and rear cassette combo which would get some or most of these gears?

I appreciate your advice,

A

CantGetNoSleep

I have a 40t front and 11-42 cassette on my gravel bike (Shimano GRX 11-speed) and I find it great for the riding I do on that bike.

I wouldn't necessarily ride it in a group as I'd worry about the 40-11 not being fast enough.

With 1x you will have some sacrifices - either easiest gear, hardest gear or gaps between the gears.

You'd therefore maybe miss the 50-11. SRAM or Campagnolo can go down to 9 or 10t smallest sprocket on the rear. You also need a decent climbing gear if you are doing actual off road riding though

Arequipa

Thank you for the reply...

I find I spin a slightly lower gear as against grinding a big gear ...

I also think having no front derailleur and a cheaper look at electronic gears will be some advantages...

Less maintenance and another reason to buy more cycling stuff!

Arequipa

40t and 11/42 looks like a nice combo!

CantGetNoSleep

https://www.boards.ie/discussion/comment/121537421#Comment_121537421

If you are going electronic / SRAM - you open up extra possibilities. E.g. SRAM Rival comes as standard with 10-44 and 40t chainring - there shouldn't be any extra gaps with the 12th gear. But you can also pair it with a SRAM Eagle MTB derailleur and go to 10-52, with a possibility of changing the chainring out for a 44t. I'm looking at going that way for a new project I am working on

pairofpears

I have 40t with 11/42 and was up to 40kmh with cross tyres. Fairly sure I'd get faster with GP5000 on it and then only run out of gears.

I'm trying to sell my 2 road bikes to go with road tyres on my 1X cyclocross bike cos it's everything I need.

Arequipa

Thanks for the reply...

Over the last few years I do lots of commuting and am mostly in small ring up front and rarely ride in big gears on the cassette and 50t chainring..

I think a good selection of the gears I use, in a 1x set up will be easy to build, maintain and probably cheaper to run too..

I have bought sensah empire group set on Ali express and like it..

I hear that ltwoo do a 1x electronic group set.. I would possibly look at this..

devonp

you can get electronic 1x in the lowest price range now, Apex axs XPLR

https://road.cc/content/tech-news/sram-apex-xplr-axs-first-ride-review-301887

CramCycle

I had 40t with 11-42t when I bought my CX bike. Went upto a 42t for racing and this could keep up fine on group rides, even doing OK in club league races (although alot of spinning was needed at the top end). I have stuck a 48t on for commuting, a few hills i have to get out of the saddle but it is rare enough.

Long story short, 40 with a 11-42 will handle 95% of Irish bike riding. Slightly bigger front chainring if you go on fast club spins but thats it.

G1032

https://www.boards.ie/discussion/comment/121537314#Comment_121537314

A 40-11 sits between a 50-13 and a 50-14