Ventum GS1 User manual

USER MANUAL
GS1

WELCOME 2
Congratulations on your purchase of the Ventum GS1 Performance Gravel Bike!
Born and tested in Utah’s Uinta Mountains, the GS1 offers off-road comfort and
versatility without sacricing speed. It’s the ultimate gravel machine: revolutionary
design and cutting-edge engineering, all wrapped up in a sleek, speedy package.
This document will guide you through the process of setting up your new bike and
getting out on the road. Of course, if you have any questions or if we can be of
assistance in any way, please contact the Ventum Concierge team at
[e-mail].
Before you hit the trails, please also take a moment to register your bike purchase
via our website:
https://ventumracing.com/support/#registerBike

FRAME DIAGRAM
UNBOXING
WHEEL REMOVAL
SEAT POST INSTALLATION
FRAME UNBOXING
WHEEL INSTALLATIONS
FINAL CHECKS & ROAD TEST
6
8
10
12
16
18
22
CONTENTS 4

Please carefully inspect the image. It gives you a thorough break down of the names
of the tubes that the frame/fork consist of and the components that this bike uses.
Please refer back to this image as needed.
1Top Tube Handle Bar 13
2Fork Brake/Shift Lever
14
3Head Tube Rear Derailleur
15
4Down Tube Cassette
16
5Chain Stay Chain
17
6Seat Stay Crank
18
7Seat Tube Front Derailleur
19
8Seat Post Brake Caliper
20
9Saddle Brake Rotor
21
10 Seat Post Clamp Tire
22
11 Headset Spacer Rim
23
12 Stem Dual-Offset Chip
24
1
3
4
5
7
8
9
10
11
12
13
17
20
22
21
23
24
6
16
18
15
19
2
14
FRAME DIAGRAM 6

Remove the parts box and support cover Remove the tube foam blocks and shifter blocks
UNBOXING UNBOXING
89

Remove the straps and foam blocks from the wheels. Remove the wheels from the
box and remove the plastic wheel protectors.
*Please note that the bars may be turned for t.
WARNING: Hub end caps may come off and stick to the plastic protector when
removed. Check before discarding wheel protectors and reinstall end caps on
the hub.
WHEEL REMOVAL 10 WHEEL REMOVAL 11
Endcaps

1. Detach the seat post and remove the protective foam
2. Undo the strap around the bottom bracket
SEAT POST INSTALLATION 12 SEAT POST INSTALLATION 13

1. Plug Di2 cable into seat post battery, you should hear a click.
*Step #1 only required for Shimano GRX Di2 builds.
2. Insert the seat post into the frame. Ensure the minimum dept of depth of 10 cm is
achieved. Carbon paste is not necessary. If you choose to use carbon paste, only
apply to the back and/or sides of the seatpost, making sure to avoid the front side
and seat post clamp.
3. Torque the BLACK seat post clamp bolt to a minimum of 6 N.m. using a torque
wrench. Do NOT adjust the silver retaining bolt. Temperature, moisture, and
contaminants can affect the seat post clamp.
If necessary, it can be torqued up to 8 N.m.
Step 1 Step 2 Step 3
Black Seatpost Clamp bolt
(5mm hex). Torque to 6N.m.,
loosen to raise/lower seatpost
Silver retaining bolt
(DO NOT ADJUST)
FAILURE TO FOLLOW THESE INSTRUCTIONS COULD LEAD TO SERIOUS INJURY OR DEATH.
WARNING
SEAT POST INSTALLATION 14 SEAT POST INSTALLATION 15
Towards handlebar

Remove the straps from the handlebar 1. Lift the frame out of the box
2. Detach the strap and foam block from the crank arm
FRAME UNBOXING 16 FRAME UNBOXING 17

Unscrew the thru axles from the frame and fork using a 6mm hex tool Remove the spacers from the brake calipers
WHEEL INSTALLATION 18 WHEEL INSTALLATION 19

Install the wheels ensuring the rotor lines up between the brake pads Secure the wheels by re-installing the thru axles. Torque to 10 N.m.
FAILURE TO FOLLOW THESE INSTRUCTIONS COULD LEAD TO SERIOUS INJURY OR DEATH.
WARNING
WHEEL INSTALLATION 20 WHEEL INSTALLATION 21

Your Ventum GS1 comes equipped with our Dual-Offset Fork. This fork has a
2-position front dropout that allows the rider to adjust the fork offset (effective
steering geometry) to ne-tune their ride characteristics. The 2-position system
comes with 5mm of fork offset adjustment.
Your GS1 will come pre-assembled in the “long” position. This is with the dropouts
in their most forward position. Follow the below instructions to change to the
“short” position:
1. Remove thru-axle, wheel, and brake caliper from the fork
2. Unscrew the 2.5mm hex bolt on the drive-side dropout, located on the inside of the fork.
Repeat step on the non-drive-side dropout.
3. Reverse the orientation of each dropout and reinstall on the fork using the same 2.5mm hex bolts. (Torque spec is 2 N.m.)
4. Add the 2 included 5mm spacers between the adapter plate and the fork (Torque spec is 6-8 Nm)
Note: In both congurations the adapter plate MUST remain orientated with “140” at the top of the plate
5. Afx caliper to the fork, install wheel into the dropouts, and secure the thru-axle
6. Adjust caliper (as needed) to align with the brake rotor
We know different riders have different priorities, so we took handling preferences one step further
with the Ventum Dual-Offset fork. The ideal position of the Dual-Offset fork will be dictated by rider
preferences, terrain, and tire selection.
All other things equal, in the “long”position, your steering is more deliberate, wheelbase is a little
longer, and your handling will be more stable and predictable. This is great for condence on long
gravel descents or really long days in the saddle. In the “short” position your steering response will be
quicker and the steering will feel livelier. This is great for riding with tight turns (such as on single track
or cyclocross), riding exclusively on the road, or if you really enjoy snappy steering.
Effective tire size will also play a part in your handling and may also affect which position you want to
use. As the tire size increases, your steering response gets slower. For example, most GS1s are shipped
with 42mm wide tires (700 x 42) and are setup the “long” position. If you increase your tire width to
48mm (700 x 48), your steering will become slower, and you may want to set the chip in the “short”
position to offset this change. Conversely, if you use narrow tires, such as 32c width, the steering will
be livelier, and you could counteract that by positioning the fork dropout in the “long” position.
No matter what riding style you prefer, the GS1 lets you dial in your ride.
NOTE: Maximum re size is 700C x 48mm
THE DUALOFFSET FORK 22 WHY CHANGE THE POSITION 23

1. Install your pedals as per the manufacturer’s instructions.
2. Then check the tire pressure and inate as per the manufacturer’s
recommendation.
3. Adjust the saddle height as necessary, and torque the seatpost clamp bolt to 6
N.m using a torque wrench. Ensure the seat post minimum insertion depth of
10cm is achieved.
4. Put on your shoes and helmet and take your new bike out for a road test. Always
wear a helmet when you ride your bicycle.
5. Check the operation of the brakes, derailleurs, and steering.
FAILURE TO FOLLOW THESE INSTRUCTIONS COULD LEAD TO SERIOUS INJURY OR DEATH.
WARNING
FINAL CHECKS & ROAD TEST 24 ENJOY YOUR
NEW RIDE!
QUICK REFERENCE SPECS
SEAT POST
CLAMP
Torque Spec: 6 N.m.
Use a torque wrench with 5mm
hex attachment
Torque Spec: 10 N.m.
Use a 6mm Hex Tool
THRU
AXLES
Torque Spec: 5-6 N.m. depending
on stem make and model. Check
stem for torque spec indications or
check with manufacturer.
STEM
BOLTS
25-35 PSI
Adjust as conditions and
equipment allow
TIRE
PRESSURE
Max 700C x 48mm
Tire clearance varies based on
internal rim width
TIRE
SIZING
VENTUMRACING.COM