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 Most makers do not publish it, so I assume 10 mm and add 6 mm to the band beside every answer.
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 CFR-505 SL
All-road · 5 sizes
The CFR-505 SL on carbonda.com
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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 CFR-505 SL · All-road · 5 sizes · integrated cockpit
- Geometry
- carbonda.com, fetched 20 Oct 2026, re-checked, no differences
- Seat angle convention
- Calculated from Carbonda's table
- Cockpit
- Generic stem and bar, assumed
- Solved with
- cover 10 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 · 879 bikes, 79 makes, 4,979 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.The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The M 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.Generic stem and barAssumedNo bar is listed for this frame.
Frame facts
read from the maker's words, not a table: carbonda.com- Tyre clearance
- 700c x 42 mm, 650b x 47 mm
- Bottom bracket
- T47 68
- Axles and brakes
- 12x100 / 12x142, flat mount
- UDH
- yes
- Seatpost
- 27.2 mm round
- Frame weight
- 1000 g, size M
In the maker's words
Kept whole, as I read it off carbonda.com.SOLD AS A FRAMESET by an OEM/ODM factory (the page's only call to action is "Get a quote"; service "Custom paint&design").
Cockpit and seatpost, in the maker's words · 156 words
SOLD AS A FRAMESET by an OEM/ODM factory (the page's only call to action is "Get a quote"; service "Custom paint&design"). The page's spec table lists "Gravel handlebarsizes : 80x400, 90x420, 90x440, 100x440" (stem length x bar width, mm) for this integrated-cabling frame; the maker's own catalogue (https://carbonda.com/upload/soft/240914/carbonda-sports-catalog.pdf, page 7) names that one-piece bar CHB-CGB02 (Type Gravel, sizes 80*400 90*420 90*440 100*440) and publishes no stem angle, bar reach, bar drop or stem clamp stack for it, so no cockpit geometry can be recorded. Headset: 1-1/2" x 1-1/2" ACR (page). Seat post: 27.2 mm round, "Zero or 25mm setback" (page; recorded per size as posts 0 and 25). Frame: T800/T1000 mixed carbon, EPS moulding, T47-68 mm bottom bracket, UDH, flat mount disc, 160 mm rotors, 12x100 front and 12x142 rear thru-axles, max tyre 700C x 42 mm or 650B x 47 mm, max chainring 52-36T or 42T; frame (M) 1000 +/-50 g, fork 420 +/-15 g.
SOURCE: carbonda.com is the maker's own site (Carbonda Sports Equipment Co., Ltd, Huizhou, Guangdong). Source: pdf (the maker's product page publishes no geometry table; its "File download" list links one AutoCAD frame drawing per size
How I read the maker's table
The CFR-505 SL page heads the frame "ALL ROAD" ("Suitable for various scenarios", "Racing geometry All road setting"), lists "FrameSizes: 48/51/54/57/60cm" in its spec table and links seven PDFs: two fork drawings (CFO-505-SL integrated and non-integrated cabling) and one frame drawing per size named XS, S, M, L and XL. There is no geometry sheet, so each size's row is taken from that size's own drawing (title block "CFR-505 SL-<size>-B", drawing no. CFR-505 SL-<size>-B-UDH-009, R0, dated 2023.04.12; PDFs plotted 2024-07-10). SIZE LABELS are the drawings' XS/S/M/L/XL exactly; the page's 48/51/54/57/60 cm list is in the same order but the maker never pairs the two, so it is kept here only as a note. DIMENSION MAPPING (from the drawing's own dimension lines): top_tube_effective = the horizontal dimension from the seat tube axis to the head tube axis at head tube top height (515.0 / 531.0 / 547.00 / 570.0 / 591.0); reach = the horizontal dimension from the BB centre's vertical to the head tube top (355.7 / 364.7 / 378 / 388 / 403); stack = the vertical dimension from the BB centre to the horizontal through the head tube top (521 / 543.7 / 570.8 / 595 / 614.0), so the stack datum is the bare head tube top; head_tube_length = the dimension along the head tube (110 / 130 / 155.0 / 180 / 200, each +/-0.5); head and seat angles are the drawn arcs to the axle line; wheelbase = the horizontal axle-to-axle dimension (+/-2); front_centre = the straight BB-centre-to-front-axle dimension (+/-2); chainstay = "RC:420" (BB centre to rear axle, +2/-0, every size); bb_drop = the vertical "73.00" between the axle line and the BB centre (every size); seat_tube_length = the dimension along the seat tube from the BB centre to the top of the seat tube (468.3 / 498.3 / 520 / 558 / 588, each +/-1). fork_offset 51 is the drawing's dimension between the steering axis and a parallel line through the front axle ("51.00" on XS, M, L, XL, "51.0" on S), which is the fork offset by construction although the drawing does not write the word; the fork's axle-to-crown length along the steering axis is drawn as 384 on every size (not a schema field). The drawings also dimension the seat stay (393.0 / 403.7 / 416.0 / 434.4 / 452), the chainstay's straight run "372.82" (372.83 on XL), a minimum seatpost insertion ("greater than" 175.00 / 205.00 / 250.00 / 265.00 / 290.00) and draw the wheels at R358.00; none of these is a schema field. Note that M is drawn at 73.5 deg while XS, S, L and XL are drawn at 73.0 deg; each drawing closes its own top tube (reach + stack / tan(seat angle) reproduces the printed top tube within 0.3 mm on every size), so the 73.5 on M is not a misread. NOT PUBLISHED and therefore null: standover, trail, stock stem length, stock bar width. tyre_width_mm is null because the maker states only the maximum tyre (700C x 42 mm), not the tyre the geometry assumes. MODEL YEAR: none printed; drawings dated 2023-04-12; model_year null. CROSS-REFERENCE: Bike Insights lists this frame as Carbonda CFR505, version 2023, build SL (see cross_check); Panda Podium, Geometry Geeks and 99 Spokes were not used.
Source: pdf (the maker's product page publishes no geometry table; its "File download" list links one AutoCAD frame drawing per size, https://carbonda.com/upload/download/CFR-505-SL/CFR-505-SL-XS-UDH.pdf, -S-, -M-, -L- and -XL-UDH.pdf; the dimension text is plotted as outlines with no text layer, so every number was read by eye from 300 dpi renders of the five drawings; PDFs NOT stored in the repo)