Minnie TE Long term project

Gallery, Projects and General > Project Logs

<< < (48/49) > >>

Joe d:
And now the fun bit, a while back I mentioned that the commercially sourced worm and wheel for the steering
didn't actually mesh..... so finally got to making a new wheel.

Turned up a blank of brass and silver soldered it to a spare bit of steel rod

made up a fixture out of some flat stock out of the come in useful pile...

And here's the lucky part, the worm measures up at a very nice 3/8" - 16 thread, so acquired a spiral flute tap in that size, centred it in the
4 jaw, put the blank in it's fixture in a tool holder and squared it up, ran it in at a pretty low speed, and Happy Days, it worked!

Here's the factory-made one on the left, and the new one on the right

Set-up in the drill press to drill through for the eyebolt the secures the gear shaft inside the steering drum

and everything back where it belongs

Shouldn't have to come off many more times, so the socket head cap screws will disappear soon too.

More importantly, chuffed to report that the thing now works as it should.

Joe

RotarySMP:
Nice easy solution how you hobbed that gear.
You thread is real eye-candy. Thanks for posting so many detailed photos.
Mark

SwarfnStuff:

--- Quote from: Joe d on May 25, 2016, 11:16:21 AM ---John: Just dig in and do it! Many of the things required on this one were "firsts" for me....
--- End quote ---
Joe, thanks for the encouragement.

Well, as a member of a local model engineering club I have the annual club challenge to get stuck into - (AFTER I find my bench somewhere under all that stuff that accumulates on any horizontal workshop surface).

This year it's Elmer's H Twin wobbler at twice the original size. Supposedly it will take two weeks but at my speed probably two months. The last three challenges were various Stirling engines. It is interesting to see the variations on the design and materials that members come up with. We get judged on appearance and how well (or if) it runs.
As Stirlings hate friction, at least a wobbler will be, (Hopefully) more forgiving in that respect. My last years effort failed to run on judging day but I did get it to behave later. Oh well, at least it ran eventually. Plus I learned a lot from the attempt, which is what it's all about for me.

John B

Joe d:
Mark, Thanks! John, I've never done a wobbler yet, going to have to correct that one of these days...

Catching up on some more stuff that got passed by earlier on...

turned and threaded a bit of steel rod,

rounded over the end, and drilled it for a handle

Turned a short handle and silver soldered it in place

and here it is holding the firedoor closed... and made up the final hinge pin as well, replacing the bent up piece of brass that
was temporarily serving...

Then did the pipe runs from the pump to the tank & valve

and another view:

and more to follow....

Joe d:
A fun little bit here, decided to add some tensioning turnbuckles/bottle screws similar to the Burrell engine plans that I have (just because I like the look of them)

started with turning the bodies of the bottles:
drilled through tapping size for the screw to come, then milled the slot, and parted them off the parent stock.
Then turned the eyes, milled the flat on them, and cross drilled:

Parted off the eyes, finished them with some filing, and then peened over the short little shaft inside the body of the bottle:

Turned and threaded some more stock for the screws, here they are in the mill for cutting the flats and cross drilling

The "Ta-Dahhh" photo:

and in place

Then after that photo, undid them, and rewound the chains on the drum other way about as I had reversed them. Turning steering wheel right
should not make your vehicle turn left, now should it?

Navigation

 Message Index

Go to full version