by.schulz 650123 User manual

To install the Speedlifter, the bike must
have a threadless A-head fork with
metal shaft and 1 1/4" outer diameter
31.8 mm.
The Speedlifter quill diameter must be
compatible with the inner diameter of
the fork shaft. The Speedlifter system
quills are currently available for metal
fork shafts with an inner diameter of
27.4 mm and 28.6 mm. In addition, the
upper end of the fork shaft must pro-
trude at least 46 mm above the head-
set for the installation of the Speedlifter
with the fork mounted.
The fork shaft end protruding above
the A-Head headset bearing must
have a vertical slot at the rear as seen
in the riding direction. This approx.
4 mm wide and a total of 24.5 mm long
vertical slot ends in a Ø6 mm hole.
In combination with the Speedlifter quill,
only 1 1/8" A-Head stems (option: angle
- adjustable) may be installed. It must
be possible to clamp the 1 1/8" A-head
stem at the rear in riding direction.
An exception is the Speedlifter Twist
Pro SDS which has an integrated
angle-adjustable stem.
The stem length must not be more
than 135 mm."
After adjusting the headset, a maxi-
mum of 3 threads may be freely visible
on the adjustment ring. The total height
of the spacer rings used, which are
mounted under the Speedlifter, must
not be higher than 20 mm.
3. INSTALLATION REQUIREMENTS
(Excerpt from the mounting instructions)
Instruction manual by,schulz Pro Cut Tool
PROFI CUT TOOL 1 1/4" Production no. 650123 (milled)
The by,schulz Pro Cut Tool was developed for precise shortening and slotting
threadless 1 1/4" A-head metal fork shafts. It is used for mounting Speedlifter Clas-
sic, Twist or Twist Pro systems.
1. SCOPE OF DELIVERY
· Drilling and sawing template
· 6 mm metal drill bit, L: approx. 65mm
· Operation manual
2. TECHNICAL DATA
Pro Cut Tool:
· Material : Zinc plated tool steel
· Height : approx. 56 mm
· Weight: approx. 545g
· for Ø1 1/4“ fork shaft
www.byschulz.com
approx. 2 - 5mm
NOT OK
NOT OK
No
threaded or carbon
fork shaft allowed !
approx. 0 - 1,5mm
ACHTUNG : The shortening and slotting of the A-Head fork shaft
as well as the installation of the Speedlifter system must be carried
out professionally. In case of incorrect execution, there is a risk of accident!
Handlebar and stem must be compatible with each other and in good mount-
ing condition.The brake and shift cables as well as electrical cable connections
to the handlebar must be long enough to make sure that they are free of bends
at the highest possible handlebar position and that they do not obstruct the
steering in any way. If necessary, the cables must be re-routed." The person
who installs the Speedlifter system is responsible for all risks of damage in the
event of an incorrect installation. We therefore strongly recommend installation
by a qualied bicycle dealer.
EN
24,5 mm
min. 46 mm
Ø 27,4 mm
Ø 28,6 mm
Vertical slit
Spacer(s)
Optional max. 20 mm
Fork shaft protrusion
Inner diameter
Aluminium fork shaft
Steel fork shaft
Headset
Ø 31,8 mm
Outer diameter
Head tube

4.4 (Fig. 4.4)
Using a metal saw, saw off the fork
shaft to the specied length through
the horizontal slot in the tool.
4.5 (Fig. 4.5)
Now use the saw to saw diagonally
from above along the right and left
edges of the vertical saw guide slot
into the existing drill hole. This cre-
ates an approx. 4 mm wide, vertical
slot in the fork shaft, which ends in
the 6 mm drill hole.
4.6 (Fig. 4.6)
Carefully remove sharp edges from
the saw cuts and the bore inside and
outside with a half-round metal le.
Remove the cloth and the resulting
sawdust carefully. Clean and grease
the inside of the fork shaft. Now you
can install the Speedlifter.
5. MAINTENANCE / CARE
Clean the Pro Cut Tool after each use and free it from saw and drill particles. Store
the Pro Cut Tool in a dry and clean place.
4. TOOL USAGE
Info: If no stem and no A-Head claw are mounted yet, you can ignore the fol-
lowing section!
Unscrew the existing A-Head end cap. Remove the A-Head claw basically upwards
with the stem installed. Loosen the stem and remove all unneeded spacer rings.
4.1 (Fig. 4.1)
Align the front wheel, standing to
the ground, exactly parallel to the
frame. Slide the ProCut Tool ( im-
print "Top" facing upwards) over
the steerer tube onto the headset
bearing or the spacer rings above it.
Align the tool so that the 6 mm drill
guide (imprinted "REAR") points
backwards towards the saddle and
the imaginary center line of the
lengthwise slot is exactly aligned
with the driving direction.
4.2 (Fig. 4.2)
Press the tool rmly against the
headset and secure it with the inte-
grated Allen screw (5-6 Nm).
Important: Tool and headset must
be free of play! Tip: Place a piece of
cloth around the area of the headset
and the front area of the wheel to
protect the sensitive bearing area
from drilling and sawdust.
4.3 (Fig. 4.3)
Drill the 6 mm hole into the fork shaft
with the included metal drill bit using
the drill guide.
Fig. 4.1
Fig. 4.3
Fig. 4.2
Fig. 4.4
Fig. 4.5
Fig. 4.6
Instruction manual by,schulz Pro Cut Tool
by,schulz © 2023 No reprints, translations or copies of any kind allowed without the prior written approval of by,schulz GmbH. Subject to technical alterations, errors and misprints excepted. Used photos can vary
from the original product. by,schulz GmbH, Saarbrücken/Germany. M-PCT-20230705
by.schulz GmbH
Bühler Str. 121
D-66130 Saarbrücken
GERMANY
Tel : [phone]
Fax : [phone]
[e-mail]
www.byschulz.com
www.byschulz.com
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Safety instructions and warranty/guarantee:
see detailed operating instructions on
www.byschulz.com
Operating instructions
available for download:
Installation videos
available under :
ATTENTION: The vertical slot in the fork shaft must be centered at
the rear in the driving direction. If a spacer ring (maximum 20 mm)
is used, the height to be shortened changes accordingly.
The fork shaft must be undamaged inside and outside after shortening
and slotting with the Pro-Cut tool.
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