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Can anyone eyeball the size of this Bianchi?

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Can anyone eyeball the size of this Bianchi?

Old 12-14-20, 07:51 PM
  #1  
zachleft
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Can anyone eyeball the size of this Bianchi?

It's either a 53cm or 55cm. The seller said she's 5'8" but it's got that short upright stem so it wouldn't at all shock me if it was a 55cm.


Last edited by zachleft; 12-14-20 at 07:55 PM.
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Old 12-14-20, 07:56 PM
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Originally Posted by zachleft View Post
It's either a 53cm or 55cm. The seller said she's 5'8" but it's got that short upright stem so it wouldn't at all shock me if it was a 55cm.

Impossible to say, but looks to be a comfortable fitting ride for her. If you dojt need to raise the seat up much higher than that, I think you will be happy with this bike.
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Old 12-14-20, 08:07 PM
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No one can distinguish between a 53 and a 55 from a photo.
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Old 12-14-20, 08:14 PM
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Being a steel frame and looking at the head tube, I'd guess a 53, but I wouldn't bet any money on it.

​​​​​​

Last edited by Wileyrat; 12-14-20 at 08:41 PM.
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Old 12-14-20, 08:18 PM
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I say it's a 55... Center to top of toptube
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Old 12-14-20, 08:26 PM
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From the center of the cranks to the top of the seat tube is about the size of my thumb a quarter of an inch from my monitor which is a 27 inch display. So if we do the math we are looking at about a size that is somewhere on their geometry chart.

It is a backwards bike too so not a great sign. But you know showing the most boring side of two sides is a good sales tactic. It keeps you even further guessing.
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Old 12-14-20, 08:39 PM
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I've done some additional sleuthing on bikeindex

You can see the size differences by looking at the spacing between the top tube and down tube where they meet at the head tube

This one is marked as a 51cm


This is marked as 53cm


Also marked as 53cm


Now compare to this one


They just got back to me with some measurements...

Standover Height: 30.5" or 77.47cm
Top Tube Length: 22" or 55.88cm
Seat Tube Length: 21.75" or 55.245cm

So it seems like it's a 55cm. Which is interesting because it has a shorter standover height than my 54cm Trek

Last edited by zachleft; 12-14-20 at 08:49 PM.
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Old 12-14-20, 08:44 PM
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Originally Posted by veganbikes View Post
From the center of the cranks to the top of the seat tube is about the size of my thumb a quarter of an inch from my monitor which is a 27 inch display. So if we do the math we are looking at about a size that is somewhere on their geometry chart.

It is a backwards bike too so not a great sign. But you know showing the most boring side of two sides is a good sales tactic. It keeps you even further guessing.
Lool

I think the seller just isn't a big bike person to be honest, so I'm guessing she didn't know to take a photo crank side. She said if she doesn't sell it she was going to lend it to one of her friends who is "a bike nerd".
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Old 12-14-20, 08:58 PM
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It’s little.
Tim
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Old 12-14-20, 08:59 PM
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Originally Posted by tkamd73 View Post
Itís little.
Tim
I got short legs Tim!
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Old 12-14-20, 09:00 PM
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Have you considered investing in a tape measure?
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Old 12-14-20, 09:10 PM
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Originally Posted by zachleft View Post
Lool

I think the seller just isn't a big bike person to be honest, so I'm guessing she didn't know to take a photo crank side. She said if she doesn't sell it she was going to lend it to one of her friends who is "a bike nerd".
I doubt she is that exceptionally big, the bike doesn't look that big. I would go check it out if the price is right and not too far.
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Old 12-14-20, 09:13 PM
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I vote 53cm
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Old 12-14-20, 09:20 PM
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If you know the wheel size, you could make scale measurements from the photograph.
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Old 12-14-20, 09:38 PM
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Originally Posted by roth rothar View Post
If you know the wheel size, you could make scale measurements from the photograph.
....you are smarter than I.

They're 700cc, so 29 inches, so 73.66 cm

Gonna go see if I can approximate this
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Old 12-14-20, 09:39 PM
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Originally Posted by zachleft View Post
I got short legs Tim!
I apologize for the sarcastic post, gotta quit commenting after the 2nd old fashioned.
Tim
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Old 12-14-20, 09:52 PM
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Here's another 853 frame in size 53 for comparison.

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Old 12-14-20, 10:06 PM
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zachleft
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Originally Posted by tkamd73 View Post
I apologize for the sarcastic post, gotta quit commenting after the 2nd old fashioned.
Tim
lol no worries
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Old 12-15-20, 12:52 AM
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Originally Posted by LesterOfPuppets View Post
Here's another 853 frame in size 53 for comparison.

Is that yours? It's lovely
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Old 12-15-20, 07:19 AM
  #20  
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53 C to C.
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Old 12-15-20, 11:02 AM
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My 2005 Bianchi has a sticker with the size on the back of the seat tube near the top under the seat stays. One appears to be visible in the first pic.
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Old 12-15-20, 11:10 AM
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My gut tells me 55, but that is a lot of seatpost for someone 5'-8" unless they have really long legs.
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Old 12-15-20, 11:25 AM
  #23  
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Originally Posted by zachleft View Post
Is that yours? It's lovely
It's a wonderful bike indeed. I like that it can fit 30mm tires, so it sees a lot of gravel duty:

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Old 12-15-20, 07:13 PM
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It's a 53, which is the most common size here in Japan.
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Old 12-15-20, 07:19 PM
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Originally Posted by tkamd73 View Post
I apologize for the sarcastic post, gotta quit commenting after the 2nd old fashioned.
Tim
"Old Fashioned" - I had to check, sure enough WI poster. Probably a brandy one too.
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