Steering head inserts and ~Rake angle
- Thread starter andyb
- Start date
Joined Aug 2020
3K Posts | 1K+
northampton
yeah and the L to the clutch lever side. Yet V2 Bayliss is 24 degrees...
the bottom insert on this bike is a different part number to the top one. It would be interesting to see where that is at. Whether that is kinda forward of the centre too but less than the top to give the rake angle...
These look about the same as the 26.5 bushing for the SF. On the SF one's they are also different part numbers top and bottom.
So Andy since the 24 degree inserts would almost be a total lathe part (you have to add the locating slots, ratail?) are you going to make some?
Joined Aug 2020
3K Posts | 1K+
northampton
That could be the plan ..
Ideally a 24 degree parallel pair of inserts with the bearing aperture sat back a bit to increase a bit of trail that might be lost 24.5 to 24 without the need for expensive offset yokes… at this stage…
I'm confused if you move the bearing openings back the same amount the trail would be the same but the wheelbase would be shorter?
Nope if you move the plane thru the center of the bearings back towards the rear of bike keeping that plane parallel with the centerline of the headstock then you're only changing the wheelbase.
Joined Aug 2020
3K Posts | 1K+
northampton
well there you go...
24 degree rake
offset from the centre 5mm
which means you can go forward with the steering spindle but then return the wheel back using offset yokes to increase trail and not suffer the classic ducati big rake/trail front wheel hitting the radiator issue..
there is a factory list of a million of these in different angles and offsets.... god knows how much they would cost.
thank god for a lathe..
24 degree rake
offset from the centre 5mm
which means you can go forward with the steering spindle but then return the wheel back using offset yokes to increase trail and not suffer the classic ducati big rake/trail front wheel hitting the radiator issue..
there is a factory list of a million of these in different angles and offsets.... god knows how much they would cost.
thank god for a lathe..
Joined Aug 2020
3K Posts | 1K+
northampton
It would be good to know what factory part fits what. 24 degrees on the V4 should give 99 mm trail.
Joined Aug 2020
3K Posts | 1K+
northampton
move the spindle forward 3 or 5mm and add 28 or even 25 inserts keeps the clearance for the radiator and adds the trail back and some to what's required
Joined Aug 2020
3K Posts | 1K+
northampton
Ducati blurb says 24.5mm gives 100mm trail with the std 30 offset yokes.
( I know on the 998 std trail was 96 with 24.5, and 90 with 23.5 with std 36 offset yokes.)
So I think 24 will lose a bit more of trail with the std 30 say down to 97. the good news is that it tends to be like for like so a 28 or 27 offset would bring it back to 100 obviously on paper.
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