I am 5' 9" with a cycling inseam of 83cm. Below are may stats crom CC. I was wondering what some of you might think about a frame that is 56cm C to C (seat tube) and 56 C to C (top tube). This would put me between the Eddy and French fit. This bike is for recreational riding and commuting. My round trip commute is about 15 miles. It is a steel frame (great condition) that I have that is not built up and I am currently riding a Giant M Alu bike.

Measurements
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Inseam: 83
Trunk: 66
Forearm: 33.5
Arm: 68.5
Thigh: 58
Lower Leg: 53
Sternal Notch: 145.5


The Competitive Fit (cm)
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Seat tube range c-c: 53.8 - 54.3
Seat tube range c-t: 55.4 - 55.9
Top tube length: 55.3 - 55.7
Stem Length: 11.2 - 11.8
BB-Saddle Position: 74.1 - 76.1
Saddle-Handlebar: 53.8 - 54.4
Saddle Setback: 4.8 - 5.2
Seatpost Type: NON-SETBACK


The Eddy Fit (cm)
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Seat tube range c-c: 55.0 - 55.5
Seat tube range c-t: 56.6 - 57.1
Top tube length: 55.3 - 55.7
Stem Length: 10.1 - 10.7
BB-Saddle Position: 73.3 - 75.3
Saddle-Handlebar: 54.6 - 55.2
Saddle Setback: 6.0 - 6.4
Seatpost Type: SETBACK


The French Fit (cm)
-------------------------------------------
Seat tube range c-c: 56.7 - 57.2
Seat tube range c-t: 58.3 - 58.8
Top tube length: 56.5 - 56.9
Stem Length: 10.3 - 10.9
BB-Saddle Position: 71.6 - 73.6
Saddle-Handlebar: 56.3 - 56.9
Saddle Setback: 5.5 - 5.9
Seatpost Type: SETBACK

Lennard Zinn's fitting guide from zinncycles.com worked really well for me.

Here's those results using your numbers.
Seat Tube Length: 54.6
Seat Tube Center to Center: 52.9
Top Tube Length: 62.9
Bottom Bracket Height: 26.5
Stem Length: 130
Assuming you are an intermediate rider type ...

You're in the ballpark with your frame and a shorter stem ... I say try it. What the hey?

Edit - Oooppps it's not Leonard. (Or Lynyrd either. )

Well, a 56cm frame would basically be a 22 inch frame. I'm currently using a 23 inch frame for commuting now. I have a 31" inseam which is basically 79 cm. The 23 inch frame is actually a little too big for me, a 22inch would be perfect. So given that, I think it may be a little small on you, but not terribly small. I'm sure it can be quite workable with the right stem, cranks, and seat post.

I understand that English may not be your first language, or maybe you're typing quickly -- I can figure out that by "insam" you mean "inseam." But otherwise, I am absolutely lost. Eddy and French fit? Are these standard terms? I want to learn this new lanaguage.

English=first language
Insam=Inseam
CC=Competitive Cyclist
Read the post as it is self explanatory

Where does one ride on the streets of Brooklyn-dangerous?

Only if one already knows what is meant by the Eddy and French fits, which is what Bklyn asked about. Instead of getting snarky, you could just provide the link:

https://www.competitivecyclist.com/ht...ad_riding.html

You're welcome.