I cant argue with the logic DVA, sure the other verniers are a bit butch/safe but then again its good to try these things out…only dead fish go with the flow…but then again if it aint broke dont fix it…
One thing which always amazed me about the K was the weight of the solid tappets. Aren’t they knocking on for 50g each? Most INA solid graded tappets are more like 30g, you’ve got to imagine that they’ll wreak havoc on a valve/spring/system operating 4500 times per min.
Hi Simon
We wouldn’t be able to do any calculations without a signed purchase order and a complete set of input data. The offer’s always open if you want it looking into further.
Hello Gents
Could you get a close up of the fracture surface? I’ll pass a copy on to one of my F&DT (fatigue & damage tolerance) colleagues at work. He used to work in the materials lab and has years of experience examining failed aircraft structure. He might be able to identify some features on fracture surface that would give you a better idea of what happened.
One possibility is that there is a gap at the base of the spoke clamping faces thus imparting out of plane bending on the spokes when the clamping bolts were torqued up.
Regards
CAB
Either the spokes are clamped or they are not… If the faces meet closing a gap that shouldnt be there the clamp force is largely irrelevent. If they dont meet then they wont clamp.
Dave
Either the spokes are clamped or they are not… If the faces meet closing a gap that shouldnt be there the clamp force is largely irrelevent. If they dont meet then they wont clamp.
Dave
That is spot on. The tightening of a bolt is very dependant on what it is actually tightening onto. If there is a gap between the 2 surfaces then the st bit of the applied torque is used to close the gap and only the remaining torque actuall does the tigtening, and with such a small torque it may not actually close the gap.
One thing which always amazed me about the K was the weight of the solid tappets. Aren’t they knocking on for 50g each? Most INA solid graded tappets are more like 30g, you’ve got to imagine that they’ll wreak havoc on a valve/spring/system operating 4500 times per min.
Further on the solid followers, they weigh aproximately 44gms which is heavy, however the reason is the reach of the centre pillar which is considerable due to the original hydraulic follower height. I have an almost identical YB solid follower here which is used with ‘long dick’ valves, these are considerably lighter but then some extra weight is added to the valve when it is extended and the shim design is also heavier since it has to wrap around the valve tip rather than sitting in the spring cap, swings and roundabouts…
Dave