3) BICYCLE MOUNTING
INITIAL SETUP
This setup must be followed every time a bicycle with a different axle length is used.
BICYCLE SETUP
1. Your bicycle must be in good mechanical condition, if you are unsure please see your
local bicycle service centre for assessment.
2. Your bicycle wheel must be in good condition, true and free from any issues. The
wheel’s rim must have less than 2mm side to side movement and less than 1mm
vertical movement per revolution. If your wheel is outside of this, please visit your local
bicycle service centre to have it trued. Untrue wheels may cause vibration during use
and could cause permanent damage to the trainer or trainer roller.
3. To measure fitness improvement it is important to use consistent tyre pressures for
each workout.
For road bike tyres we recommend 110psi.
For mountain bike tyres please see that manufacturer’s guidelines written
on the tyre sidewall.
The trainer base power curves used in the JetBlack app are measured on a bike using
700x23c slick road tyres at 110psi with exactly 1.5 complete turns (three half turns)
of the roller adjustment knob after the roller first makes contact with the tyre. Lower
pressures can still be measured as long as they are used consistently.
Standard Nut and Bolt
• Ensure the nuts on your axle are tightened securely
• Check that the nut and axle nests into the axle support cups by more than 5mm (3/16
inch)
Quick Release Skewer
• JetBlack strongly suggests you use the supplied quick release skewer (for those
bicycles that use QR systems
• Replace the bicycle’s rear wheel quick release (QR) skewer with the one provided. See
your bicycle owner’s manual for instructions on how to properly adjust the QR skewer.
• The skewer lever must be on the non-drive side of your bicycle (the left hand side).
• Your skewer must be tight and your wheel must be aligned properly in the bicycle.
Thru Axle
• Bicycles that use a thru axle system in most cases do not nest the minimum of 5mm
(3/16 inch) into the axle support cups. If your thru axle does not nest more than 5mm
(3/16 inch), you should acquire a trainer specific trainer thru axle that is suitable for
your bicycle. These are sold separately.
• Install your trainer specific thru axle making sure to follow the manufacturer’s
instructions.
BICYCLE SETUP
1. Check your tyre pressure is inflated to whichever comes first; the tyre manufacturer’s
maximum recommended pressure or 110psi if your tyres will allow.
2. On the left hand side, adjust the silver threaded bolt and black plastic lock nut so that
they are all the way in, with no thread showing. This will give you plenty of room as you
move the bike into position.
3. Take your bike and gently lower your bike into the trainer frame. Align the bike and rear
wheel to the left side of the trainer so that the bicycle axle is firmly resting inside the
threaded adjustment bolt.
4. Note: If the roller is touching the tyre and not letting the axle nest into the axle support
cup you may need to lower the resistance unit by winding the roller adjustment knob
anti clockwise. See Diagram 2.
5. Carefully lift your bike into position, aligning the rear QR skewer with the axle clamp
cones. While holding the bicycle steady, slide the right side QR skewer nut into the
axle clamp cone. Using the adjustment knob and the release clamp, tighten the clamp
cones until they come into contact with the bicycle’s QR skewer ends. Make sure that
the QR skewer aligns with the notch in the clamp cones. Rotate the clamp cone cup to
centre the bicycle’s rear wheel over the centre of the roller on the resistance unit. See
diagram 1.
6. After contact is made, tighten the drive side (right hand) adjustment knob until the bike
is securely held – an additional few complete turns of the handle.
7. When you have completed these steps make sure the black locking ring is rotated
clockwise until it is firmly against the trainer frame. This will lock the threaded bolt in
place, preventing it from tightening or loosening during use.
8. Check the bicycle is secure in the trainer frame. The bicycle must not move separately
from the trainer. Test this by holding the bicycle saddle and moving it from side to side
and up and down. If the bicycle moves please return to initial setup. See Diagram 3.
9. Finally check that the roller is tightened to exactly 1.5 turns (three half turns) after the
tyre first makes contact with the roller. See Diagram 5.
IMPORTANT:
Ensure that your tyre is centred on the roller to within 10mm (3/8 inch) from the centre
of the roller. Your tyre must have a minimum 5mm (3/16 inch) clearance from the metal
(silver coloured) roller frame. See Diagram 4
