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Bike Size Question

Old 03-12-18, 08:49 PM
  #1  
npa1211
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Bike Size Question

Hello everyone!

I am new on the forum! I am interested in 2 bikes at my local shop and not sure which size is better for me. I am 5'7" with a 30" inseam. Since I am new to the sport and looking for a bike that will last me awhile until I become more advanced I want to make sure I get the proper size!

Debating between these 2 bikes:
Trek Emonda ALR 4- 54cm
Trek 1.2 C H2- 52cm

Thanks for your help!
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Old 03-12-18, 09:12 PM
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caloso
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If you are buying from a shop, just test ride them. They should be happy to help you with the right size and making any other adjustments necessary. Good luck!
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Old 03-12-18, 11:22 PM
  #3  
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The people at the shop that can talk to you in person and actually see you on the bikes are going to be a lot more helpful than those of us "out here". Talk to the shop.
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Old 03-13-18, 12:32 AM
  #4  
CliffordK
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Either bike will probably work, or can be adjusted with different stems, seat adjustments, etc.

The larger frame may give a bit more of a casual feel. The smaller frame will allow a lower handlebar configuration, and perhaps a bit sportier feel.
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Old 03-13-18, 12:53 AM
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According to fit charts and whatnot, you could go with a 52 or 54. And looking at detailed geometry charts for both bikes, the effective top tube length is only about a centimeter different between the two, which should easily fall within the realm of adjustment.

And while charts are a valuable tool to get you in the right ballpark, ultimately it's going to come down to individual preference as to which one feels better ...with a little bit of dialing in, of course.

If you're a numbers kind of guy and want another opinion, I've found the fit calculator at Competitive Cyclist to be pretty good at bike sizing:
https://www.competitivecyclist.com/S...ulatorBike.jsp

Whatever bike you choose, enjoy it!
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Old 03-13-18, 02:58 AM
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Go to the bike shop and try them out.
A basic rule of thumb is for mtb's you want 3-4 inches of clearance over the top bar, 1-2 inches for road bikes.
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Old 03-13-18, 08:29 AM
  #7  
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IMO, 2cm isn't much. Which is the most comfortable to you right now? Do you like the color of the other one better? Then ask the shop if they think they can adjust it to fit you as well as the other fits.

I'd go for the one with the best groupset and lightest myself, but I'm not quibbling over a pound or two.

I'd also recommend you ask if the bikes are appropriate for the type of riding you want to do.
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Old 03-13-18, 10:18 AM
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Both seem to be nice bikes.

The shop should be able to
give both a quick adjustment
to fit you fairly close
& let you give them a test ride.

If both feel good,
Get the one that you like the looks the best to you.

Usually takes a few hundred miles &
several small tweaks to get a bike dialed in to fit your body geometry
& riding style.
This process also
helps you learn about your bike & is
part of the fun
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Old 03-13-18, 10:23 AM
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This is where having all this information at your fingertips quickly becomes information overload and cripples the user. Keep it simple and go to the shop and talk to somebody. This is akin to asking the internet which pair of jeans will fit me better.
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Old 03-13-18, 10:56 AM
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Originally Posted by northtexasbiker View Post
............. This is akin to asking the internet which pair of jeans will fit me better.
Members Mark from Sam's club.
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Old 03-13-18, 12:20 PM
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Thanks for all the information guys! I went to another shop and they recommended a 54cm since a 52cm seemed a little crammed.

They had a Cannondale Synapse 54cm for a really good price and felt comfortable riding it. Any opinions on that bike? I liked the disc brakes and endurance stance over the Trek Emonda sporty stance and caliper brakes
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Old 03-13-18, 01:10 PM
  #12  
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Originally Posted by npa1211 View Post
I went to another shop and they recommended a 54cm since a 52cm seemed a little crammed.

They had a Cannondale Synapse 54cm for a really good price and felt comfortable riding it. Any opinions on that bike? I liked the disc brakes and endurance stance over the Trek Emonda sporty stance and caliper brakes
Nice bike. Good frame.
I’m partial to disc brakes, & like the look too
Check out a few other shops,
Specialized has some similar types.

Fun shopping for a new bike & you are gaining bike knowledge
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Old 03-13-18, 03:21 PM
  #13  
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As some have said, you can ride a range of sizes. I have a 32" inseam and I can ride from 54-58. Adjustments have to be made based on TT length in particular. As suggested try both and see if you feel more comfortable on one.
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Old 03-13-18, 03:25 PM
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Bicycle frame sizing is very specific to the make and model of bike you are looking at. I own 3 Look bikes, two are road bikes, one is a TT bike. My TT bike, a Look 496 is a size small. Of the 2 road bikes, one, the Look 595 is a size large. The other road bike, a Look 481 SL is a 54 cm, which many bike companies would market as a medium. This is to illustrate that buying a bike according to a "size" can be a waste of time. Instead, you have to remember what you want to do with your bike. Do you want to race and be as fast as possible? Or, do you want to just ride, enjoy yourself and sometimes buckle down and go really hard. Or, do you prefer to be able to ride as far as possible in comfort at a reasonable speed on a bike that makes you feel good? To me, what I want is a bike that sort of disappears beneath me. It does what I want and what I am able to do, they make me feel safe in that they never fight back when I want to change my line through a tight corner on a steep descent. Choose a bike based on how it rides, not about the "size"
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Old 03-13-18, 03:44 PM
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Perhaps it's just me but you're considering purchasing at what is supposed to be a full service shop. They should, IMHO at least, do some basic measurements and compare that to the actual measurements for the bikes you're considering. But, as noted, sizes vary considerably between bikes. Part of your purchase price is paying for THEIR expertise in getting the right bike and the right SIZE bike for you.

If they can't or won't, go somewhere else.
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Old 03-13-18, 03:55 PM
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Originally Posted by jwh20 View Post
Perhaps it's just me but you're considering purchasing at what is supposed to be a full service shop. They should, IMHO at least, do some basic measurements and compare that to the actual measurements for the bikes you're considering. But, as noted, sizes vary considerably between bikes. Part of your purchase price is paying for THEIR expertise in getting the right bike and the right SIZE bike for you.

If they can't or won't, go somewhere else.
Good point, make the shop work to make the sale, don't work to make the sale easy for them
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Old 03-13-18, 04:07 PM
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if they're in a local bike shop the staff will help figure out the size you need,, or are these in a Pawn Shop?



straddle it..flat footed.. lift it straight up , 1 hand on the saddle 1 on the handlebars,

How high off the floor are the tires when you cannot lift it any higher between your legs??






....

Last edited by fietsbob; 03-13-18 at 04:14 PM.
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Old 03-13-18, 04:12 PM
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Originally Posted by fietsbob View Post
if they're in a local bike shop the staff will help figure out the size you need,, or are these in a Pawn Shop?
He said:
my local shop
While I suppose that could mean local PAWN shop, I took it as LBS.
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Old 03-13-18, 05:51 PM
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I love your option of the Cannondale. I think you may like it because it has a bit longer top tube and so feels more roomie. For the use you listed, I’m surprised you haven’t though of one of the “fast hybrids”. As you have a Cannondale Dealer near, I would suggest you take a Cannondale Quick 4 for a ride. “Around town” with lots of stops and intersections, it’s much easier rideing. I like the Quick 4 because is almost a “flat bar road bike”.

After you ride it, if you still want a drop bar bike buy the ‘dale You first rode and start riding!

Every person has their own favorites, but frankly there is no “bad” $1,500 Bike. I think that holds true at the $800 rage as well. It sounds odd I know, but I always include a good bit of sidewalk in my test ride. 1/2 mile of sidewalks tells me more about a bike then a couple of miles of road.
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Old 03-22-18, 06:23 AM
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Test untill you find the one you can feel more comfortable.
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