Yes, you get the Loctite with the foil. I had the cruizer and used the loctite. There were never any issues with fasteners loosening.Herman wrote: ↑Sat Jan 25, 2020 12:42 pmI am told the Levitaz Cruizer is supplied with Loctite LB8065 and this has been mentioned in review video's. Also in my research I have heard mention that the fastners may loosen in use.
LB8065 is in fact an anti seize paste and not a thread locker. I sense there may be some Chinese whispers knocking around on this subject.
Can anybody out there with actual experience of the Cruizer please comment on the performance of the fasteners!
What kind of a torque spanner are you using? Thanks!Horst Sergio wrote: ↑Sat Jan 25, 2020 2:39 pmHi Herman,
I use Cruizer and other Levitaz wings since they exist, about 100 times a year and 10% in salt water, jumping a lot and change or open wings screws every 1 - 10th sessions.
Since 3 years since I use torx screws and a torque spanner I have no problems with loosening or hard to loose screws.
I use a troque of 6,5 Nm for all wings also the Cruizer at a body weight of 63 kg. If you are heavier I would go higher up to 8 or maybe 9 Nm
Levitaz says in his manual!
https://levitaz.com/uploads/download/Le ... 7_2018.pdf
"Tighten all four screws M6x20 to 9±1 Nm tightening torque with the Levitaz mounting tool."
I would not go up or over 9 Nm, but I use the following technique:
Tighten all screws to your personal level (6,5 - 8 Nm) then load foil being upside down both wing halfs in the middle assymetric with well about half of your body weight (same how it happens while riding when ventilating one wing side).
Then you will be able to turn the screws with same torque another about 20° and there from my experience they will stay for the next 1 - 10 sessions till you try to open which should be easy without high wear.
And no never used any paste on my Levitaz foils.
But if you have once ridden arround with loose screws the screws or even the fuselage threat can be damaged so in any case first buy new high quality screws and if they start to loosen it can be a damaged fuselage threat.
In this case you could try to build 23 mm long screws as this shouldn't be to long, but you have to check this yourself!
Hi Herman,Herman wrote: ↑Sun Jan 26, 2020 5:05 pmJaros
If you are going to follow Horst Sergio's excellent advice it should not matter what torque spanner you use as 9Nm is always 9Nm, and there are plenty of torque wrenches with a standard drive.
However, you should bare in mind how the fastner is lubricated. You will achieve more strain with a greased bolt than a dry bolt, therefore the lubricated bolt will be under greater tension than the dry bolt for the same torque.
An extreme example would be a steel bolt being designed to be torqued down dry to 80% of its tensile strength, the bolt may well fail at the same torque if it were lubricated with molybdemum disulfide grease.
PS It will only need to be a small torque wrench with appropriate range. Tip to avoid overtighting; use a short spanner or hold a long spanner near the nut being driven. Small spanners are short for a reason..........