Bike details
Overview
Key information split into simple groups.
Bike summary
-
Category -
Frame Aluminum -
Wheels 27.5" -
Travel Front 100mm -
Fork RST GILA
-
Groupset Altus, Tourney -
Suspension Hardtail -
Drivetrain 3 × 8 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
17"
155cm - 172cm
19"
170cm - 185cm
21"
182cm - 200cm
15"
145cm - 158cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
alloy 6061 27.5"
Suspension Fork
RST Gila 27.5 ML lock out (100 mm)
Drivetrain
Rear Derailleur
SHIMANO Altus
Front Derailleur
SHIMANO TY700 (34.9)
Shift Levers
SHIMANO Altus (24)
Cassette
SHIMANO HG200-8 12-32 (8)
Crank
PROWHEEL 42-34-24 teeth 170 / 175 mm cranks
Chain
KMC Z72
Pedals
resin
Wheels
Front Hub
QUANDO Disc 32 holes
Rear Hub
QUANDO Disc 32 holes
Rims
AUTHOR Xenon 27.5 32 holes
Spokes
black steel
Tires
AUTHOR Rocket 27.5" x 2.10"
Brakes
Brakes
TEKTRO disc hydraulic (6" rotors)
Cockpit
Stem
AUTHOR alloy
Handlebar
AUTHOR 8° 660 / 680 mm
Grips
AUTHOR high density foam
Seat
Saddle
AUTHOR Courier
Seatpost
AUTHOR alloy (31.6)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 17" | 19" | 21" | 15" |
|---|---|---|---|---|
| Bottom Bracket Height | 320 mm | 320 mm | 320 mm | 320 mm |
| Front Center | 625 mm | 648 mm | 673 mm | 693 mm |
| Rake | 44 mm | 44 mm | 44 mm | 44 mm |
| Top Tube Length | 568 mm | 588 mm | 613 mm | 633 mm |
| Seat Tube Angle | 73 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 381 mm | 432 mm | 483 mm | 533 mm |
| Head Tube Angle | 69 ° | 69 ° | 69 ° | 69 ° |
| Head Tube Length | 115 mm | 125 mm | 130 mm | 140 mm |
| Chainstay Length | 433 mm | 433 mm | 433 mm | 433 mm |
| Wheelbase | 1056 mm | 1079 mm | 1104 mm | 1124 mm |
| Bottom Bracket Drop | 35 mm | 35 mm | 35 mm | 35 mm |
| Wheels | 27" | 27" | 27" | 27" |
| Rider Min Height | 155 cm | 170 cm | 182 cm | 145 cm |
| Rider Max Height | 172 cm | 185 cm | 200 cm | 158 cm |
Model Overview
Impulse is an Author Impulse model. Author launched 25 bikes of this model so far. You can get a glimpse at all models from 2017, by clicking on this link.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Average price for Crosscountry bikes
Our math shows that the average cost of a dependable Crosscountry bike is 1905$. However, you could also get a good Crosscountry bike even if you pay a lower amount than the average price. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
Average weight for Crosscountry bikes
Crosscountry bikes weigh an average of 12.4 kg (27.34 lbs). An easier bike will give you a big advantage in climbs. However, a heavier bike can gain speed when you descend.
Impulse weighs 14.4 kg (31.75 lbs) and is much heavier than the average. In short, the average Crosscountry bike weight is 16.13% lower than this one.
Overview of components
Fork
The fork installed on this bike is the RST GILA model. The travel on this model is 100mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. In short, make sure you choose one with a decent fork when you purchase your dream bike.
Wheels size
The wheels on Impulse are the 27.5″ aluminum type. These wheels will provide you with more control over the bike. However, these wheels have a slower top speed if you compare them to 29″ wheels.
Brakes
Nothing is more important on a bike than its ability to brake properly. Author Impulse is equipped with Hydraulic Disc brakes. Hydraulic disc brakes provide amazing stopping power, no matter what the terrain. To sum up, you can ride your bike with confidence.
Sizes
Impulse comes in 4 sizes, that range from 155 cm – 158 cm (5.09 ft – 5.18 ft). In conclusion, finding one for you shouldn’t be a problem.