Stack and reach
How high and how far forward the top of the head tube is, from the bottom bracket. They are the two numbers that decide whether a frame can be set up like yours.
BB, or bottom bracket
The axle your cranks turn on, in the middle of the frame. Every number on this site is measured from it, because it is the one point that sits in the same place on every bike.
Headset cover
The little cap on top of the head tube, under your spacers. Most makers do not publish it, so I assume 15 mm and add 6 mm to the band, which on its own is enough to hold an answer at "probably" rather than "fits".
Stem clamp, and its centre
The collar on the steerer that your stem bolts to. I need the middle of it. Where a maker gives only the height, I assume halfway up and say so on the answer.
Steerer
The tube coming up out of the fork. The cover, the spacers and the stem all sit on it, and it is the thing a mechanic cuts to length.
Bar reach
How far forward the hoods sit from the middle of the bar. Two bars on the same stem can put your hands 20 mm apart, which is why I ask.
Setback
How far your saddle sits behind the bottom bracket.
Drop
How much lower your hands sit than your saddle. On a riser bar I count the bar's rise, so the drop is that much less than it is to the clamp.
Rails, and the rail centre
The two rods under your saddle, and the middle of the straight part of them. That midpoint is the point I use, because it is the one you can find with a tape.
The band
How far out I could be, in millimetres, and why. It is a straight sum of everything I had to assume rather than a clever average, so it errs wide on purpose.
wb, stand, trail
Wheelbase, standover and trail: how long the bike is, how high the top tube is where you straddle it, and how steady the steering feels. I show them against your bike, and I leave them out when the maker does not publish them.
est.
Estimated: a number I worked out rather than read off the maker's table. Anything marked this way can move if the maker publishes the real one.
Close Escape closes it. The measuring guide has the pictures. Open the measuring guide
Carbonda AF01
Gravel · 6 sizes
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This is the bike I ride
No account is needed to read the table. Report a wrong number · Correct this bike
- Bike
- Carbonda AF01 · Gravel · 6 sizes · integrated cockpit
- Geometry
- afbicycles.com, fetched 20 Oct 2026, re-checked, no differences
- Cockpit
- Generic stem and bar, assumed
- Solved with
- cover 15 mm (assumed), max spacers 40 mm (assumed), stem clamp centre 20 mm (assumed), so every verdict carries ±10 mm at the bar
- Sheet
- 22 October 2026 · 686 bikes, 74 makes, 3,984 sizes in the catalogue
Geometry, every size, from the maker's table
The tinted row is the size drawn beside it. Press a size to draw it.| Size | Stack (mm) | Reach (mm) | Head angle (deg) | Seat angle (deg) | Head tube (mm) | Chainstay (mm) | Wheelbase (mm) | Standover (mm) |
|---|---|---|---|---|---|---|---|---|
| XS | 535 | 375 | 70 | 74 | 110 | 425 | 1018 | 713 |
| S | 556 | 382 | 70.5 | 74 | 130 | 425 | 1027 | 741 |
| M | 578 | 389 | 71 | 73.5 | 152 | 425 | 1037 | 773 |
| L | 601 | 395 | 71 | 73.5 | 178 | 425 | 1052 | 807 |
| XL | 624 | 402 | 71.5 | 73 | 200 | 425 | 1061 | 838 |
| XXL | 645 | 409 | 72 | 73 | 220 | 425 | 1070 | 866 |
The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The L drawn to scale from the table, with no build on it. Stack and reach run from the bottom bracket to the top of the head tube; every size is solved from those two. One square is 100 mm.
The maker's cockpit
No stock cockpit I can name, so every size is solved on a generic stem and bar unless you choose one on the sheet.Canwin AelousVendor-listedstem -8 · reach 75 · drop 125 · clamp 37 · lengths 70-100 · widths 380-440
Frame facts
read from the maker's words, not a table: afbicycles.com- Tyre clearance
- 50 mm
- Bottom bracket
- T47
- Axles and brakes
- 12x100 / 12x142, flat mount
- UDH
- yes
- Seatpost
- not recorded yet
- Frame weight
- not recorded yet
- Rider weight limit
- 120 kg
In the maker's words
Kept whole, as I read it off afbicycles.com.The AF01 SSL and AF01 Standard framesets are sold with a "Handlebar" option of "Canwin aelous" or "W/O Handlebar" (EUR 1,179.00 for the SSL frameset at fetch time, pre-order); the frame has integrated cabling and a 1-1/2" x 1-1/2" ACR headset.
Cockpit and seatpost, in the maker's words · 198 words
The AF01 SSL and AF01 Standard framesets are sold with a "Handlebar" option of "Canwin aelous" or "W/O Handlebar" (EUR 1,179.00 for the SSL frameset at fetch time, pre-order); the frame has integrated cabling and a 1-1/2" x 1-1/2" ACR headset. (1) Canwin Aelous Integrated Gravel Handlebar (https://afbicycles.com/en/products/canwin-aelous-integrated-gravel-handlebar, the bar's spec image https://afbicycles.myshopify.com/cdn/shop/files/2.png?v=1753089733): widths 380/400/420/440 mm (A, "upper handle width"); lower width (B) 440/460/480/500 mm at the drop ends; bar reach 75 mm; drop 125 mm; flare 20 deg (D, "outward expansion angle"); stem angle -8 deg (E, "Stem Angle (deg) -8"); stem clamp stack 37 mm (F, "Stem Height"); stem lengths 70/80/90/100 mm; steerer clamp 28.6 mm; store variants every length x every width (70*380 to 100*440). Seatpost: 27.2 mm round (AF SP01 27.2 mm post sold separately; its offset is not stated on the frame page). Frame: AF01 SSL T1000/M65 carbon, 830 g +/-50 g (M, excl. hardware and paint), fork 435 g; AF01 Standard T800/M46, 980 g +/-50 g; T47-86 bottom bracket, UDH, flat mount, 160 mm rotors front and rear, 12x100 front and 12x142 rear thru-axles, max tyre 50C, max chainring 46T or 50-34T, down tube storage, max rider weight 120 kg, 5-year warranty.
SOURCE: AF bicycles is Carbonda's own direct-to-rider brand: carbonda.com/road/AF01.html (the maker's site) lists "Model No: AF01SSL /AF01 Standard" with "Direct-order website afbicycles.com", and afbicycles.com (a Shopify store, served from afbicycles.myshopify.com) carries both framesets with the same geometry image. Source: image_table (the maker's direct-order store afbicycles.com, linked from carbonda.com/road/AF01.html as "Direct-order website"; the geometry is one image on the AF01 SSL and AF01 Standard product pages
How I read the maker's table
The brand is recorded as Carbonda because the frame is Carbonda's and carbonda.com lists it; riders will meet it as "AF bicycles AF01" (a naming call for Carl). TABLE LEGEND (the numbered diagram beside the table, checked against each row): 01 Stack = vertical from the BB centre to the horizontal through the head tube top; 02 Reach = horizontal from the BB centre's vertical to the head tube top; 03 HTL = head tube length along the tube; 04 BBD = BB drop below the axle line; 05 ATC = fork axle-to-crown along the steering axis, 395 every size (not a schema field); 06 OHset = fork offset, 55 every size; 07 FB = BB centre to front axle in a straight line, recorded as front_centre; 08 RC = BB centre to rear axle, recorded as chainstay, 425 every size; 09 STL = seat tube length along the tube from the BB centre; 10 WB = wheelbase; 11 TT = top tube, drawn horizontal between the extended seat tube and head tube axes, recorded as top_tube_effective; A HTA; B STA; D Standover = vertical from the top tube to the ground (the point along the top tube is not stated). Merged cells: BBD 78 spans XS-M and 76 spans L-XXL; HTA 71 spans M-L; STA 74 spans XS-S, 73.5 spans M-L and 73 spans XL-XXL; ATC, OHset and RC span all six sizes. STACK DATUM: the drawing measures stack and reach to the top of the head tube with no headset cover drawn. The page's own prose (German store copy) says "70-72 deg" head angles, wheelbase "1.018-1.070 mm", stack 535-645 and reach 375-409 and "constant 425 mm chainstay", all of which agree with the table. NOT PUBLISHED and therefore null: trail, stock stem length, stock bar width. tyre_width_mm null: only the maximum (50C) is stated. MODEL YEAR: not printed; image uploaded with Shopify version stamp 1777365787 (late April 2026), store product published 2025-06-18; model_year null. integrated_cockpit true because the frame is sold for the one-piece Canwin Aelous (or bare) with integrated cabling. Bike Insights has no AF01 and no AF bicycles brand (checked 2026-10-20). No Panda Podium, Geometry Geeks or 99 Spokes request was made.
Source: image_table (the maker's direct-order store afbicycles.com, linked from carbonda.com/road/AF01.html as "Direct-order website"; the geometry is one image on the AF01 SSL and AF01 Standard product pages: https://afbicycles.myshopify.com/cdn/shop/files/GEM_new_6c99a09a-cb68-4108-885e-688e254efb02.png?v=1777365787, 3544x1536 px, numbered frame diagram + table; numbers read from the image by eye, image NOT stored)
