Build an Excavator from Scratch

[egronvold]

Very nice build. Impressive skills!

[pufferfish]

Thank you.

I'm a fan of functional gimmicks. So i've spend the last two days in the shop to make a remote controlled ladder for the operator.







I think, the operator needs some handrails

[Tgrzes]

I think it

[pufferfish]

Todays work was a repair of the stick cylinder. Before the final assembling i've made the mistake to pull the rod complete to the end. During normal operations this never will happen due to the geometry of the stick.

At the end of the cylinder the piston collides with the oil input flange


thereby the piston seals get damaged



To open the cylinder i have to loosen the head. Sealed with loctite 542 thread sealant it just needed some hot air



After replacing the piston o-rings and refilling the oil then thread sealant is applied


Now I have to wait 24 Hours before the glue is cured.

[pufferfish]

24 hours later: The repair was successful.


The stick holds his position.

After this I've made a last stress test.

Mounting all the 20kg ballast as counterweight


And a little mandrel press was the lifting object


her weight


and finally the test. lift and hold. passed.


I'm very satisfied with this result. After a holiday the final work on the hull begins...

[pufferfish]

Detailwork.

A rough sawed


and fine filed patch for the cutout of the ladder lever


A door handle


and handrails complete the second of four parts of the hull.

[pufferfish]

Hi. Nothing new due to a vacation, but today i have a first training session for my eye hand coordination.

Works a bit better but still much to learn

A short clip

https://vimeo.com/727432466