diff time
the 4.778:1 cwp in a pigshead, buried unloved
time to assemble the 5.38:1...
the bit that's going to spin a lot!
the pinion flange test-fitted, no collapsable-spacer or oilseal yet as this is to check the pinion's 'intrusion' into mesh with the crownwheel. I've used the pinion-shim that was previously fitted to this pigshead & 4.1:1 - hopefully close enough🤨
bits...
time to fit & torque the crownwheel to LSD bolts (Locktite used as locking compound)
60ft/Lbs in opposite / circular position motion, repeated twice.
3J's Plate LSD.
ratio marked be manufacturer, bought through Bofi but resold frpm Paco in USA (unsure of actual machineshop that cut these gears)
looking through one of the 'windows' into the LSD, can see one of the 'sunwheel teeth and unused crosspi 'ramp' cutout.
this is dangerous, if you've never encountered then best stay away if possible


the Antichrist of engineering, 'Engineers Blue' or marking blue ('Blue for short?) spreads fear into the hearts of mortal men🤭
basically a blue coloured grease BUT gets everywhere....
aplied as a whitness mark onto a few (5 here) of the driveside teeth then turning the pinion while adding a 'drag' or brake force with hand on the crownwheel to squeeze the blue onto the pinion...
after one revolution...
another revolution, looking promising...
the pinion from below the diff spool / LSD.
pinion teeth viewed from above.
close-up (ish) of the pinion teeth, the marking blue has transfered nicely showing an almost perfect mesh pattern 😎
you know it's a low ratio when the crownwheel is near the pigshead centreline 😎
hopefully tomorrow I'll get time to check the 'coast' side teeth and if good will set diff bearing preload and fit the pinion bearings 'collapsable-spacer' then drive-flange oilseal and reset the pinion bearing preload
enough for tonight...
Rich.

the 4.778:1 cwp in a pigshead, buried unloved

time to assemble the 5.38:1...

the bit that's going to spin a lot!

the pinion flange test-fitted, no collapsable-spacer or oilseal yet as this is to check the pinion's 'intrusion' into mesh with the crownwheel. I've used the pinion-shim that was previously fitted to this pigshead & 4.1:1 - hopefully close enough🤨

bits...

time to fit & torque the crownwheel to LSD bolts (Locktite used as locking compound)
60ft/Lbs in opposite / circular position motion, repeated twice.

3J's Plate LSD.

ratio marked be manufacturer, bought through Bofi but resold frpm Paco in USA (unsure of actual machineshop that cut these gears)

looking through one of the 'windows' into the LSD, can see one of the 'sunwheel teeth and unused crosspi 'ramp' cutout.

this is dangerous, if you've never encountered then best stay away if possible

the Antichrist of engineering, 'Engineers Blue' or marking blue ('Blue for short?) spreads fear into the hearts of mortal men🤭
basically a blue coloured grease BUT gets everywhere....

aplied as a whitness mark onto a few (5 here) of the driveside teeth then turning the pinion while adding a 'drag' or brake force with hand on the crownwheel to squeeze the blue onto the pinion...

after one revolution...

another revolution, looking promising...

the pinion from below the diff spool / LSD.

pinion teeth viewed from above.

close-up (ish) of the pinion teeth, the marking blue has transfered nicely showing an almost perfect mesh pattern 😎

you know it's a low ratio when the crownwheel is near the pigshead centreline 😎
hopefully tomorrow I'll get time to check the 'coast' side teeth and if good will set diff bearing preload and fit the pinion bearings 'collapsable-spacer' then drive-flange oilseal and reset the pinion bearing preload
enough for tonight...
Rich.