Minnie TE Long term project

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Stilldrillin:
I've never had to build a gear assembly. But.........

I've often wondered how they were spaced accurately to each other. As, once the hole is drilled, nothing can be adjusted. :scratch:

Nicely shown/ explained Joe! :clap: :clap: :thumbup:

David D

awemawson:
If you get it slightly wrong you turn eccentric bushes then loctite them in the correct alignment

vtsteam:
Or even if you get them ridiculously wrong.

I recently read about another person with a round column mill-drill correcting backlash in the Z axis handle that way. Been thinking about following suit. Disconcerting turning a handle 180 degrees before a rack engages.

Joe d:
been a while, but I've been busy... The hornplates were set aside for a bit while I was waiting for some reamers to arrive
(always nice to have a reason for getting some more tooling :clap: )

So, not wanting to sit idle, I started on some blanks for wheel rims...

cleaning up a bit:

chain drilled to remove a lot of material from the middle

cleaned up the bore on the lathe, you can see that I've centre drilled already to free up the outside bit as well:
this chunk of steel is big enough that I will get both front wheel rims out of the middle bit as well as one rear rim.
Bored the centre so I will have a useable surface for chucking it up to finish turning instead of trying to centre it on the rather ragged drilled surface.

Here's the other piece drilled to free up just enough for the other rear rim

At this point, got a package in the mail with some reamers in it :ddb: , so went back to the hornplates.
Did the last couple of axle holes, and the went to riveting... made up a couple of tools for this: turned some O1 tool steel
and inlet the space for the rivet head with a ball mill cutter, and then hardened them. Made a small anvil sort of rivet snap to clamp in the vise, and a set and snap with a narrow neck to fit into the space available in the angles I need to attach;

set the "anvil" in the vise, held up the outboard edge of the work on a spare chunk of 2x4, and away we go

And here they are in place:

I'm pretty happy with how it turned out, 1st riveting I've done since grade school shop class which was a while ago :thumbup:

cheers all, Joe

Joe d:
So: progress is being made, my reamers showed up, so got back to the bearings... reamed the remaining mounting holes,
chucked up a bearing blank using the spigot on one end to clean up the opposite face, sweated that onto a spare bit of brass, and centred pretty much by eye in the 4 jaw to start cleaning it up .

moved over to the mill to clean up the non-circular side:

Coming along:

and then working on the 6th of 8 had a little :hammer: moment, it came loose in the vise and I now have an interesting pattern engraved on the top face:

so time for a :coffee: and a break....

Pondering options: I can sweat on a bit of material and shape it down to size, or just mill out the offending marks and live with the thing not matching the other side... will probably stop waffling and fix it right...

Cheers, Joe

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