With the expansion of online shopping lots of delivery vans came to our doorstep.
Delivery vans that clog up many of our cities and contribute to carbon emission and pollution.
So, it is a really good thing that many companies and start-ups are developing alternative based on bicycle technology.
Most of these innovative vehicles are targeting the “last mile” delivery. Taking the parcels into the city.
Cargo bikes are obviously heavier than ordinary bicycles.
With the higher weight come not only much higher, but also quite different loads on the wheels.
These loads create problems for standard bicycle wheels. Alligt offers high quality wheels specially designed for cargo bikes.
High quality production in two steps
Injection moulding
The wheels are injection moulded in high strength fibre reinforced polyamide.
CNC machining
Then some high precision machining is done. To ensure the best possible material orientation and accuracy, some product details are not included in the mould. They are machined afterwards.
Machining also allows us to offer different versions of the wheel.
Proven in practice.
Alligt, in cooperation with Boldesign, has developed four 406 mm, (20” bicycle or 16" moped) wheels. Great care was taken optimising the design for strength stiffness and weight, selecting the best possible material and finally optimising the production process.
They have become the wheel of choice for many professional cargo bike manufacturers.
Norms and testing
Alligt has been member of the CEN/TC 333/WG 9 (European cargo bike) committee in 2020 and 2021. Alligt uses a test machine according to the German EN 79010 Cargo bike norm
Ramp test
Alligt has performed a lot of tests rolling down a 450kg Golo down a ramp at 15 km/h onto a stone curb that was embedded in a large block of concrete.
This test was done to test the influence of mishandling the wheels.
Both CBW1 and CBW2 were tested. Both with and without suspension in the vehicle.
The test clearly showed that having a suspension is a good way to avoid curb hitting damage.
Alligt Cargo bike wheel CBW1
Dimensions ETRTO 27-406
Maximum static axial load 75kg.
Maximum tire pressure 5 bar for a 47 mm tire
From left to right:
1 The CBW1 wheel injection moulded
2 CBW1A The sprue removed + Centre hole machinend to size + The valve hole drilled.
3 CBW1B Entire Centre removed + The valve hole drilled.
CBW1A with spider
Dimensions ETRTO 27-406
Maximum static axial load 75kg.
Maximum tire pressure 5 bar for a 47 mm tire
Weight 905 grams
Step File for fitting in your design
CBW1B
Downloads CBW1B
Dimensions ETRTO 27-406
Maximum static axial load 75kg.
Maximum tire pressure 5 bar for a 47 mm tire
Weight 815 grams
Step File for fitting in your design
Alligt Cargo bike wheel CBW2A
Dimensions ETRTO 35-406
Maximum static axial load 150kg.
Weight 1580 grams
Maximum tire pressure 5 bar for a 50 mm tire
Step File for fitting in your design
The main features
Compared to the CBW1 wheel The CBW2 wheel has a wider rim, a bigger wall thickness and an integrated centre hub fixation.
The rim edge is rounded in automotive style to make hard bumps easier on the tire.
The commonly used high tire pressure creates a permanent stress in the rim material. This results in material creep.
The rim of the CBW2 wheel has an increased wall thickness.
The expected lifetime using a 47 mm wide tire at 5 bar is more than 10 years compared to 3 to 5 years for the CBW1 wheel.
Reducing tire pressure while not in use increases life span.
In the CBW2 wheel the tire pressure induced material stress in the rim is reduced from 80 to just 60 N/mm2. As the graph illustrates, this results in a much longer life span. The trade-off, of course is a slightly heavier wheel. All our cargo bike wheels are produced in the Netherlands using high quality material from a European manufacturer.
CBW2 compared to CBW1
The main differences: CBW2 has a wider rim, a greater wall thickness and the centre hub fixation is integrated.
Alligt Cargo bike wheel CBW3
Developed to be used in combination with Grin motor
Dimensions ETRTO 35- 406
Expected maximum axial load 125 kg.
Maximum tire pressure 5 bar for a 47 mm tire
Production of the Grin All Axle Hub Motor, with Cargo Wheel Preview
Also available as CBW3A with a closed hub.
Suitable for Grin hub motor
Step File for fitting in your design
Alligt Cargo bike wheel CBW5
New product: Avaliable summer 2023
This wheel is developed for 500kg+ cargo bikes.
The CBW5 offers a range of interesting features:
First of all it is a ETRTO 50-406. It offers a 50 mm rim that is also suitable for 16” moped bikes. These 16" tires seem better suited for cargo bikes. Several customers are already using these on our current wheels. The CBW5 is also compatible with some 406 bicycle tires. The spokes are strong but more flexible than in CBW2 and CBW3. This makes the wheel more resilient to impact. Like impact from potholes and curbs. Still for best reliability is suspension and a thick tire with max. 3 bar air-pressure is recommended.
It features an automotive style hub fixation with 4 bolts at a 100 mm pitch circle. This allows you, to use standard parts in cargo bike design. We expect this to become the new standard for heavy cargo bike wheels.
Step File for fitting in your design
Alligt Cargo bike wheel CBW5 Hybrid
New product: Avaliable summer 2023
The same strong spokes, combined with a sturdy aluminium rim. ETRTO 35-406
Alligt
Handelsweg 20 8152 BN Lemelerveld Nederland
+31 572 785 241
leovisscherkorver@gmail.com
CoC 17078419 VAT# NL 001 841 964 B85
IBAN:NL 87 INGB 0006 547700 BIC:INGBNL2A
Design and provided 3D files and drawings are and remain intellectual property of Alligt
Design and engineering by Boldesign