Base bike

ComponentDetails
Frame2016 Winora Bermuda1, aluminium 6061, large (~60 cm)
Head tubeZS44/28.6 upper, ZS44/30 lower, semi-integrated, 34 mm bore counterbored to 44 mm at each end
Headset Ritchey Comp semi-integrated, 1-1/8", threadless
Fork Ridewill 093350, rigid Cr-Mo steel, 435 mm axle-to-crown, 45 mm offset, 1-1/8" threadless steerer, IS disc mount, 60 mm tyre clearance, QR
Bottom bracketThreaded shell, 68 mm width

Conversion kit

ComponentDetails
MotorBafang BBS02, 36V, mid-drive, 500W
Battery36V 15Ah Hailong “Mini” pack (≈540Wh), ~35 cm case, downtube mount
DisplayEggRider V2
Range~110 km, mixed assist levels

Drivetrain

ComponentDetails
Chainring Gustavo 42T, aluminium, for BBS01/BBS02/BBSHD
Crank arms Bafang 170 mm, for BBS01/BBS02/BBS-HD
Rear derailleurShimano Acera RD-M390, 9-speed
CassetteShimano CS-HG200-9, 11–32T
ChainShimano CN-HG53
ShifterShimano SL-M370, 9-speed
Pedals Shimano PD-EH500, SPD one side, flat the other

Wheels & tyres

ComponentDetails
RimsX-Pert X3 alloy, double-wall
Front hubShimano Alivio dynamo DH-T4050-1D (unused)
Rear hubShimano FH-RM33
AxlesQR, 100 mm front / 135 mm rear
Tyres Schwalbe G-One Allround 28×1.50 (40-622)
Tubes Schwalbe SV19 Presta, 40 mm valve
Mudguards SKS Chromoplastics

Brakes

ComponentDetails
CalipersShimano BR-M355 hydraulic disc, 160 mm rotors front and rear
Brake pads Shimano B05S-RX
Brake discsTektro 4A 160-8
Brake tubesShimano SM-BH59-JK
Rear adapterA_F180/R160 post-mount adapter
Front adapter Shimano IS-to-post-mount, 160 mm, listed for BR-M966 / M765 / M585. The new fork is IS, the caliper is post mount
LeversShimano BL-M355

Cockpit

ComponentDetails
HandlebarAlloy Ergoriser trekking riser bar, 630 mm wide
Stem Threadless, 110 mm, 20°, run rise-down (−20°) and slammed, no spacers
Seatpost27.2 mm alloy
SaddleSelle San Marco Milano
Mirror Arkham bar-end mirror, folding, 360° rotatable

Luggage

ComponentDetails
Frame bag DIY, made from an old Code 10 Backpack
Rack Standwell SW-CS 051, sprung clamp, up to 25 kg

Lighting

ComponentDetails
FrontROCKBROS RHL800, 800 lm, 5 modes, USB-C
RearROCKBROS Q3, brake-sensing, USB-C

Geometry

Winora Bermuda bicycle geometryA proportionally drawn side-view geometry diagram. Hover the dotted measurement marks for their values.700 × 40c tyres700 × 40c tyres700 × 40c tyres700 × 40c tyres170 mm crank armscrank 170 mmStack: 656 mmstack 656 mmReach: 439 mmreach 439 mmSeat tube angle: 76.2 degreesseat angle 76.2°Head tube angle: 72.2 degreeshead angle 72.2°Effective top tube: 611 mmeffective top tube 611 mmHead tube: 190 mmhead tube 190 mmChainstay: 450 mmchainstay 450 mmWheelbase: 1,123 mmwheelbase 1,123 mmBottom-bracket height: 276 mm; bottom-bracket drop: 75 mmBB height 276 mm; drop 75 mmTrail: 65 mm; fork offset: 45 mmtrail 65 mm; offset 45 mmhover dotted marks for measurements
MeasurementValue
Tyres700 × 40c
Wheelbase1,123 mm
Chainstay450 mm
Bottom-bracket height276 mm
Bottom-bracket drop75 mm
Stack656 mm
Reach439 mm
Effective top tube611 mm
Seat tube angle76.2°
Head tube angle72.2°
Head tube190 mm
Fork axle-to-crown435 mm
Fork offset45 mm
Trail65 mm
Crank arms170 mm
Stem110 mm, −20°
Spacers2 × 10 mm

changed by me goes on and off as I need it

  1. The closest catalogue sheet I could find, rather than a record of this exact bike. Mine was delivered with the 9-speed Altus/Acera group instead of the 8-speed one the sheet lists, so 27 gears where the sheet says 24, and it wears lime graphics rather than the cyan on the bike in the photo. Frame, fork, brakes, wheels and cockpit all match. ↩︎

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