lane 6 is the devil

[Battybird]

lane 6 is the devil ...... no it really is .
after spotting issues for a fair few well , years we seem to have cracked it . we now have a cell issue .
the 3 pin cell jumps over the bumper( this would be the finger nearest the head pin cell ) , this does not happen regularly just when it feels like it . it can go a whole night without doing it then the following day will do it 4 - 7 times .
also now the 10 pin cell will jump up (againthe finger nearest the 6 cell ) it doesnt go over the bumper but will wedge on the lever .
so what we have done ......
1, new wire ways ( not home made ) didn't like thoose one bit so put the old ones back .
2, changed out all the cells at least twice and the 3 pin cell at least 4 times .
3, changed the respot link connector ( black rod ) ok so its second hand but in good nick
4,checked , cleaned all the respot levers and their posts ( changed out any bent ones etc )
5, numerous cell set ups , with carb links a little looser , and tighter , swan neck longer and shorter .....
6, put a spring on the bell crank , took it off , put it on , took it off .....

nothing we do seems to help .

[BWC]

Strange. Have you put on different carb links yet? Maybe the fittings are really worn or a link is bent causing some weird angles. I would try to change the #3 link and the main drive link. Just a guess.

[Tablejam]

You may have a strange situation here but usually I have only ever seen this happen if:

-the pivot stud for the respot cell was bent
-the cell frame near this area was bent
-the carb link was too short

You say the cells were replaced but were they assembled correctly and do they have pivot studs that are not bent?

Using the shifter cam to hold the cells all the way open are the forward fingers tight against the bumpers or is there 1/4" or less play there?

Something seems to be making the fingers jump or get pulled over the bumpers.

I'm thinking something is bent here with these cells.

[Battybird]

anything even slightly bent has been replaced all the nipples on the wire ways where replaced and double checked to make sure they where secure .
the fingers are not tight against the bumper . though we have tried tight , loose and very loose lol
we did swap a few carb links but might try all of them this time .

[RonB]

If your paw adjustment is off a bit your cells could be trying to open before the weight of the pins is completely of the fingers…it can make the cells want to snap open a bit instead of opening smoothly…if this is happening I have seen it create the symptoms you are describing…when the table is running its second rotation pay special attention to when the cells start to open…if this happens to be the case adjust your paw slightly back a tab until the timing is correct…then you should see the cells smooth out when they open...

[Tablejam]

If your paw adjustment is off a bit your cells could be trying to open before the weight of the pins is completely of the fingers…it can make the cells want to snap open a bit instead of opening smoothly…if this is happening I have seen it create the symptoms you are describing…when the table is running its second rotation pay special attention to when the cells start to open…if this happens to be the case adjust your paw slightly back a tab until the timing is correct…then you should see the cells smooth out when they open...

That's a good one, I could see that make the fingers fly open.

[MarkyB]

Not the most popular answer your going to get here, but replace your short cell stud with a long one. I've got rid of all of ours here, we also have a washer under the pivot stud to raise the cell to aid clearence, when the pivot stud has a slight bend in it one way or another, it stops the studs from hitting the cell frame. We have the long strike cycles here, so our fingers are going through the "snapping" open phase quite alot, and we get minimal finnger jumping, definitly nothing that re-occurs when we swap an offending cell out like you have done

[Tablejam]

Got long strike cycles here, some with the 'interesting' shifter cams, never had a need to do any mods to the cells- and when a finger did do this it was always something easily obvious, which is what makes this seem so odd.

[Toby]

Have you played around with the amount of torque on the frame bolts and the bolt that threads into the gripper lever thingamjig? I was always swapping bent frames for not-as-bent frames, and the torque mattered. If I got it snug and backed off a bit it was usually okay for a while.

Toby