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Comparison Formula Alpina AM DD 27.5 2020 vs Optima Alpina DD 2019

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Formula Alpina AM DD 27.5 2020
Optima Alpina DD 2019
Formula Alpina AM DD 27.5 2020Optima Alpina DD 2019
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Model year20202019
Type
mountain (MTB)
mountain (MTB)
Max weight110 kg110 kg
Frame and suspension
Frame size17.5"17"
Frame materialaluminiumaluminium
Suspensionhardtailhardtail
Suspension type (fork)spring-elastomerspring-elastomer
Fork travel50 mm50 mm
Wheels and brakes
Wheel size27.5 "27.5 "
Tyre
Wanda /2.1"/
Wanda /2.1"/
Rim materialaluminium
aluminium /JHT/
Rimdouble walldouble wall
Front brake
mechanical disc /Jak6, 160mm rotor/
mechanical disc /Yinxing DB-06, 160mm rotor/
Rear brake
mechanical disc /Jak6, 160mm rotor/
mechanical disc /Yinxing DB-06, 160mm rotor/
Front hub modelQuando
Rear hub modelQuando
Handlebar and transmission
Speeds2121
Chainrings33
Freewheel cogs77
Freewheel/cassette modelShimano Tourney TZ500Shimano Tourney TZ500
Bottom bracket modelMT 902SNeco
Front derailleurShimano Tourney TZ500Shimano Tourney TZ500
Rear derailleurShimano Tourney TZ500Shimano Tourney TZ500
Shifter typetriggertrigger
Shifter modelShimano EF500Shimano EF500
Chain modelTESTEC
Handlebar typestraightstraight
HeadsetNeco H115+C2861Neco
General
Equipment
chain guard
kickstand
chain guard
kickstand
Weight16.3 kg16.3 kg
Color
Added to E-Catalogfebruary 2020july 2019

Model year

The year to which the manufacturer classifies the bicycle (more precisely, the model range that includes this model).

The significance of this parameter is that the model range is updated every year, and two bicycles with the same name, but from different years, can differ significantly in characteristics and equipment. At the same time, new models ( 2024, 2023) usually cost more, and older ones ( 2022, 2021, etc.) are sold at reduced prices.

It is worth considering that a later year of manufacture in itself does not necessarily mean more advanced characteristics - manufacturers can change them in the direction of simplification. So the model of previous years may be in no way inferior to the new bike.

Frame size

Frame size refers to the distance from the saddle attachment point to the bottom bracket attachment point (axles with gears and pedals). The main parameters that determine the choice of a bike for frame size are the height of the user, the purpose of the bike and the intended riding style.It is also worth considering the female frame, which is lowered, which allows you to ride comfortably even in a skirt or dress.

User height is the most significant factor. In general, the taller the user, the larger the frame should be. The universal formula that allows you to calculate a specific size is as follows: the length of the leg from the groin to the heel in centimeters must be multiplied by 0.6, and then divided by 2.5 — you get the approximate size of the frame in inches. But in the characteristics of brands, the frame can also be indicated in the usual form for measuring size XXS, XS, S, M, L, XL and XXL.

However, note that this value is very arbitrary and approximate, it can only be used for simple bicycles not intended for extreme driving (for example, city bikes, see "Destination"). If you choose a more specialized model (mountain, road, BMX) — it is better to refer to the tables for th...e appropriate type, because. sizes for one height can vary significantly depending on the destination. In addition, different manufacturers have different frame geometry and measurement methods, and therefore, for the most accurate selection, it is recommended to use the manufacturers' own tables.

Note that the optimal frame size is not absolute — in most cases, for the same height, “neighboring” sizes are quite suitable. And here it is worth paying attention to the intended driving style. It is believed that small, well-controlled frames are better suited for extreme variant, and larger and more stable ones are better suited for long-term calm movement.

Front hub model

The model of the hub used in the front wheel of a bicycle.

The hub is the central part in the wheel through which the axis of rotation passes. Features of the behavior of a bicycle depend on its characteristics, in particular, “rolling” (the ability to move by inertia, without pedaling). Knowing the model of the front hub, you can clarify its characteristics according to the manufacturer's documentation, find reviews from other users, etc., in order to determine how this model suits you.

Rear hub model

Model of the hub used in the rear wheel of a bicycle. See Front Hub Model for details.

Bottom bracket model

Model of the carriage installed on the bike as standard. The bottom bracket is the part that connects the system (front sprockets with pedals) and the frame; roughly speaking — an axle with bearings.

For details on the meaning of the model of a particular part, see "Cassette Model".

Chain model

Model of the chain supplied as standard with the bike. For details on the value of the Model parameter for any part, see Cassette Model

Headset

Model and/or some characteristics of the steering speaker of a bicycle. This information is indicated mainly for high-end cars equipped with advanced steering speakers. Additional data about the speaker is unlikely to be needed for a quiet everyday ride, but it can be useful for professionals for whom every detail in the bike's equipment is important.
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