Værksted — åbent i dag Guldbergsgade 29 · 2200 København N KBH --:-- CET

VÆRKSTED · NØRREBRO — EST. 2016

Cargo bikes, built to your measure.

Lumen Cycles is a three-person workshop on Guldbergsgade. We braze steel cargo frames to order — fitted to your family, your freight, and your seven-in-the-morning hill. One bike in the jig at a time.

5–7 weeksLead time
5 yearsFrame warranty
Reynolds 725Steel tubing
25 % depositSecures your slot
Godkendt · QC 014
1 940 MM · LONGTAIL GEOMETRY FILLET-BRAZED STEEL — REYNOLDS 725 LOAD DECK — 60 KG GATES CARBON BELT · OIL-FREE SON DYNAMO · 90 LX
Tegning 014-CLumen Cycles ApS
Model LLongtail · 2 up
Mål 1:12Rev. 2025-09
Ark 1 / 1Guldbergsgade 29
01 · MODELLERNE — three frames, one purpose

Every build starts from one of three frames — then it becomes yours.

We keep the platform small on purpose. Three silhouettes, refined since 2016, each brazed in-house and sized to your body and your cargo. Prices are build-bases; configure everything below.

L

Model L — Longtail

From€ 2 900

The school-run workhorse. Two children on the tail, a week of groceries in the panniers, and it still rides like a bicycle — not a lorry.

Max load180 kg
Length194 cm
Tail deck60 kg
Lead time5 wks
Bestseller · 61 % of builds
C

Model C — Container

From€ 3 100

The classic Copenhagen box, re-drawn. Kids, dog, or forty kilos of sourdough — the larch-and-steel container swallows it, canopy optional for November.

Max load200 kg
Length212 cm
Box volume230 L
Lead time6 wks
Family favourite
V

Model V — Vessel

From€ 2 600

Compact longtail for small courtyards and metro-adjacent lives. Fits the lift, folds into a hall, carries an adult passenger and a cello. Yes, we tested both.

Max load160 kg
Length158 cm
TurningTight
Lead time4 wks
City compact
02 · BYG SELV — configure your build

Compose it here. We braze it there.

Six decisions, one bicycle. The price below is your build estimate — accurate to the euro once we've confirmed your sizing call.

Reynolds 725Gates beltMagura MT5eSON dynamo · 90 lx
MODEL L · MOSS · SINGLE-SPEED5–6 UGER
FrameRamme
DrivetrainTræk
ColourLakering — 3 coats, hand-sprayed
Cargo & extrasLast
Build estimateBase € 2 900
Deposit today (25 %)€ 725
Estimated lead time5–6 weeks
€ 2 900Incl. first service

Deposit fully refundable for 14 days · Balance at handover

03 · PROCESSEN — frame to road

Fra rør til vej.

01/ 05
Samtalen
Week 0

01 — Samtalen

Coffee at the bench. We audit your cargo: children (how many, how loud), groceries, tools, dog. We measure your inseam, your arms, and your patience for hills. You ride our test mules around the block.

Deliverable — fit sheet & build brief, signed by both of us.

Week 1

02 — Geometry & fit

Your numbers go into the jig drawing: stack, reach, tail length, box height. We tune head angle for loaded stability — a fully laden Model C should still steer with two fingers at 20 km/h.

Deliverable — tegningsblad, your personal drawing number.

Weeks 2–3

03 — Framebygning

Reynolds 725 tubes cut, mitred by hand, tacked, then fillet-brazed at roughly 900 °C. Dropouts, rack mounts, dynamo routing — every braze is cleaned and filed before the frame leaves the jig.

Deliverable — raw frame, stamped with your build number.

Week 4

04 — Finish & samling

Three coats of paint in the booth, decals under lacquer. Wheels built up 36-hole, belt tensioned, dynamo light wired and beam-set on the wall rig. Every fastener torqued and marked.

Deliverable — a complete bicycle, ride-ready and photographed.

Weeks 5–6

05 — Aflevering

We ride the 12 km Nørrebro test route together — cobbles, tram tracks, one rude hill. Saddle height settled, bolts re-checked, and the bike is yours. First service at three months is on us.

Deliverable — handover, warranty card, and a very good day.

04 · MATERIALER — the parts list

Nothing we wouldn't ride ourselves.

Tubeset
Reynolds 725, heat-treated seamless steel
Birmingham, UK
Joinery
Fillet brazing, brass — no paint-thin welds, ever
In-house
Drive
Gates Carbon Drive CDN — oil-free, silent, ~20 000 km
Salt Lake City
Gearing
Shimano Alfine 8 or single-speed, matched to your hills
Osaka, JP
Brakes
Magura MT5e hydraulic discs, 180 mm, cargo-rated
Bad Urach, DE
Lighting
SON dynamo hub + Edelux lamp — 90 lux, always on
Tübingen, DE
Wheels
Hand-built 36h rims, brass nipples, Schwalbe Big Ben
In-house
Standard
Tested to ISO 4210 / EN 15194 (e-builds) at 2× load
Certified lab
05 · VÆRKSTEDET — Guldbergsgade 29

Three benches, one brazing torch, and the door is open.

The workshop sits in a former print shop off Sankt Hans Torv. You can watch your frame being brazed through the window — or come in, hold the tubes, ask the annoying questions. We like the annoying questions.

AØ
Anders ØstergaardFounder · framebuilder
since 2016
FB
Freja BrandtPaint & finish
since 2018
SK
Søren KoldDrivetrain & electrics
since 2021

"Steel forgives. It lets you fix, re-braze, repaint — a cargo bike should outlive its first child passenger."

Brazing bay · 900 °C17:42 · Tirsdag
0+

Bikes delivered since 2016

0

Years at the same bench

0

Weeks, average lead time

0

Brazing hours last year

06 · BYGGEBOGEN — the build log

Signed by every owner at handover.

08 NOV 2024Model L
We sold the second car in March and haven't thought about it since. The kids wave from the tail deck like it's a parade float.
✦✦✦✦✦
Astrid & Jonas VestergaardNørrebro · Moss / Alfine 8
22 MAR 2025Model C
Anders spent twenty minutes asking about our grocery habits before he'd even quote a price. That's when I knew the €3,400 was safe.
✦✦✦✦✦
Henrik MortensenValby · Havn Blue / canopy
02 JUN 2024Model V
It fits in our elevator. I don't say that to be funny — it genuinely fits, and it carries me, my daughter, and a week of canteen food.
✦✦✦✦✦
Amalie RiisFrederiksberg · Bone / single-speed
17 JAN 2025Model L
The dynamo light sold me on the name alone. January darkness, 7 a.m., fully loaded — I've never felt more visible in traffic.
✦✦✦✦✦
Thomas EnevoldAmager · Signal / mid-drive
30 AUG 2025Model C
Three months in, Freja re-tensioned the belt and re-torqued everything for free, then refused a tip. Buy the bike.
✦✦✦✦✦
Cathrine & Malik HolmKøbenhavn K · Coal / bench seats
07 · SPØRGSMÅL — before you commit

Four thousand euros deserves straight answers.

Five to seven weeks depending on frame and drivetrain — six if you choose the mid-drive, because we test every motor for 50 km before handover. Your build slot is confirmed the day your deposit lands, and we send photos at every stage.

Yes — we ship EU-wide in a reusable larch crate, 85 % assembled, with a video call walk-through for the final four bolts (€ 180–260 depending on country). In Copenhagen and Malmö we deliver by bike, obviously.

Five years on frame and brazing, two years on components, and your first service (at three months) is included. If a braze ever fails in normal use, we rebuild the frame — no depreciation talk, no forms in triplicate.

A 25 % deposit reserves your build slot and is fully refundable for 14 days. The balance is due at handover, by card or bank transfer. Financing through your bank is common; we'll happily provide the specification documents they ask for.

Please do. Every Saturday 10–14 is open workshop: three test mules (L, C and V) ready to ride around Sankt Hans Torv. Book a slot below so we have coffee made and a fit sheet waiting.

08 · BOOK ET SLOT — reserve your build

Come by, or claim a slot from afar.

Adresse
Lumen Cycles ApS
Guldbergsgade 29, baghuset
2200 København N
Åbent
Mandag — Fredag10.00 – 18.00
Lørdag (test rides)10.00 – 14.00
SøndagLukket — vi cykler
Kontakt
post@lumencycles.dk
+45 31 62 44 08
GULDBERGGSGADE 29 SANKT HANS TORV → 55.6885° N · 12.5540° E

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LM-2025-000

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Anders or Freja will write back within 24 hours on weekdays — usually with a couple of questions about your hills. Check your inbox; nothing leaves this building except steel.