old tractor LANZ HP 4WD 1923 (scale 1/4)

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ZAPJACK

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machining the differential housing. It's a basic spur gearing differential
At first, centering with a centering microscope and with dial test indicator.
Finally, machining carefully
LeZap
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ZAPJACK

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114 & 115 is the finished differential body
116 is the rear differential housing. The steel axle is for the zero setting and to be sure that all the axles are perfect square
117, 118 & 119 are the rear axle bearing. Again, I often use steel axle for zero setting and square fitted
LeZap
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neil_1821

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That’s some impressive work! I imagine it’s quite useful being able to cut your own gears. Keep the pictures coming :)
 

e.picler

Edi from brazil
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Congratulations LeZap!
Impressive work. I observed that you use the boring head as facing head, I have never thought about that, very clever. I have learned one more skill.
Good pictures too!

Tks,
Edi
 

ZAPJACK

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Next steps of the frame. Polishing the welded zone.
It’s after finishing that I understand the high importance of all the sizes, angles, …
There is lot of measurement on the gear box, differential, front axle, frame pivot, all angles are so important
Don’t forget, it’s an articulated 4WD type tractor.
This is the reason why I work very carefully and slowly
There are three secrets to have success: we must measure, measure and measure again
LeZap
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