Masonchat

(Sorry ignore title )Hi Trek FX Sport 4 has 1x11 , where as FX 2 has 3 X 8 and FX 3 has 2x 9

Can anyone tell me how much of a difference would be in the different gearing systems please.

I have the FX 2 , but considering the sport FX 4 (as sport 6 not available here for a year)

The 1x11 gearing is putting me off though would I be loosing at either end ??

fishboat

Bicycle Gear Calculator

travbikeman

You need to ask yourself, what speeds do you ride and do you use the larger chain ring on your current bike for a faster speed? Do you need or use the granny gear?

The chain ring on the 1x11 bike is 40 tooth, but it won't let you go at a speed that you have with either the 46 tooth or 48 tooth bike on the 2x and 3x systems.

But if that's not a preference, the 1 x system makes the shifting simpler, should offer close to the range of the bikes or going up hill.

I personally, like the 1x very much that all of my bikes and son's bike have them.

**Just an FYI, the 2022 models are about out. Both the 3 and 4 will be a 1x system and the 2 is a 2x system.

Masonchat

thanks travbikeman,
I had to look up granny gear to be sure😆, but yes I need it to come up really sharp inclines , I live at the top of one such hill it's almost vertical 😄

But I never come of my saddle , included is gradient of the now famous hill as its used in ironman which came to my hometown in last couple of years.

I have pulled a trailer with 2.5 gallons of Heineken up that hill in the granny gear 😆,

I suppose it's what you are use to as well , I saw that about the 2022 models ,

I am mainly in top chainring unless climbing, but even down hill I've never been able to spin out , so I'm sure you are right it most likely would be more than I need

hokiefyd 

I'd recommend figuring out the gearing range that you need and then look at various 1x systems to see if they support that range. For example, what is the chain ring and cassette sprocket count in the easiest configuration that you use on a regular basis right now? What's the chain ring and cassette sprocket count in the hardest (or fastest) configuration that you use on a regular basis right now? Post that here and we can help you figure out the gearing range that you need to maintain and can identify which 1x systems support that, if any -- some people use a very wide range of gearing.

Here's a relevant thread in the Bicycle Mechanics section that may help inform your decision: Double vs triple crankset - pros and cons

jaxgtr

I bought my wife the FX Carbon 4 1x and she loves it. We live in a Florida, so the rear cassette 11-34 was useless, so I swapped it out for a 14-28 and that works perfect for her. I think you have to think about what your area has and if that is going to work for your needs. Swapping out cassettes is a simple and easy change.

msalvetti

Double check the FX 3 gearing - for 2022 they have gone to 1x10.

On my current 21-speed Mongoose, I almost exclusively use the top 7 gears. I did a gear chart and found the Trek 1x10 would only have 5 gears over that range, but the FX 4 1x11 would have six. For that reason I think I would prefer the 1x11, so I've decided to try to find an FX 4 this spring instead of the FX 3.

Mark

DarkSkyHUnter

Since you already have an FX2, practice riding solely in your middle chainring (38T). That'll give you a similar feel to the 40T on an FX 4. If you find yourself spinning out a lot, you might want to consider sticking with a 2X system.

Masonchat

Looks lovely, the wheels are cool , they aren't the originals are they ?

Masonchat

I use to ride mainly in middle chainring , but got use to using outter from 3rd gear down , these days I'm mainly in outter .
I ended up actually getting a giant fastroad sl 1 2x11 carbon fork 9.8kg Shimano 105 groupset for 700 euro less than trek FX sport 4

Enjoying it so far think I made right choice gearing wise




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jaxgtr

Thanks. The wheels are the Aeolus Pro 37's and the LBS I frequent, order them for a guy but he never came to get them, so I snagged them. They are really sweet wheels, can run them tubed or tubeless. She does not ride as much as I do, so I left them tubed for now, and put the Pirelli P Zero Race 28mm tires on them. They are the tubed versions of the P Zero Race line.

Masonchat

they are really nice I'd love them , but if I spent another 1500 euro on wheels they would have me committed 😂 , and it would only be my 3rd time , no jokes 🤣, bipolar

jaxgtr

LOL.. well, I would have been committed then. I bought 2 other sets of wheels along with these. I picked up the Aelous Pro 5's for my rim brake Emonda, and Aeolus Pro 51's disc version for my Domane. I personally like the 50mm depth.

Masonchat

They really are stunning jaxgtr as is the the bike , I felt guilty about buying upgrade handlebar grips 🤣🤣,