12 Turning the Crankshaft - PMR #5 Steam Engine

12 Turning the Crankshaft - PMR #5 Steam Engine - Metal Lathe Mill Combo

Рет қаралды 3,627

Жыл бұрын

In this episode I machine the crankshaft. This involves turning between centers on two axes - the crankshaft and the crank pin.
This includes my first use of a surface plate and more puzzlement about why my mill can't side-mill worth a dang.
The post-Xmas footage is taken with the GoPro that Santa brought me, and there are some focus issues here and there. I'll try and do better next time.
I've been given and old PMR #5 "Coke Bottle Steam Engine Kit. It came with many parts missing and we know it's old because they don't make them with the main castings in bronze anymore.
This series will document this rank amateur hobbyist's attempt to build this thing.
The kit is available at www.pmmodelengines.com/shop/s... (not sponsored)
My machine is a 1998 Shoptask XMTC Gold lathe mill combo with LinuxCNC.
I am a hobbyist and maker and sometimes I sell what I make.
Tindie Store: www.tindie.com/stores/arielnh56/
Etsy Store: www.etsy.com/shop/RedHunterStore
Blog: redhunter.com
Twitter: / redhunterstore
Hackaday: hackaday.io/arielnh56

Пікірлер: 18

@oldfarthacks Жыл бұрын

I am enjoying your build and picking up a few tips. Thanks for posting this. I always like seeing how people overcome the problems of work holding. One suggestion if I may, if you ever do another one of these, when turning the crank pin, slide a pair of bushings down the main shaft on both sides and then put your turning blocks on. In that way you can remove the bending moment that you had on the crank in the setup that you used. When I am doing this sort of work, I always think of my part as being made of rubber and see if it is stable with pressures. For those of you out there who also enjoy this sort of things, I can recommend two other channels. The fun thing is that they both built the same model steam engine, the PM Research Steam Engine #1, so you can compare their methods and skills. You can also judge the differences between a good hobby shop and a full blown machine shop. Blondihacks, she is a skilled amateur . The videos start with this one: kzfaq.info/get/bejne/jb1_pqekxMnTj30.html Joe Pie, he is a professional. He starts on this one with this video. kzfaq.info/get/bejne/q8eGabSjxLrVqac.html

@nhallows1 Жыл бұрын

I just found your videos building this steam engine. I’m enjoying the build so far and am looking forward to the next video. I just started working in the machining trade. CNC Operator. Been a mechanic for the last 20 years. I enjoy this much more.

@thumperthoughts Жыл бұрын

It's a great hobby, I hope you make a great career out of it. Check my channel page for a list of other channels to watch.

@alexanderwoodley8987 Жыл бұрын

crank webs

@thumperthoughts Жыл бұрын

That's it!

@samec88 Жыл бұрын

Where did you get your toolpost? Looks a nice item. I could do with a nicer one for my minilathe

@thumperthoughts Жыл бұрын

Pewetools.de also similar available from China search for multifix toolpost. They come in different sizes, mine is size A. A mini lathe probably wants a smaller one AS, AA or AAA

@samec88 Жыл бұрын

@@thumperthoughts awesome, thank you :)

@oldfarthacks Жыл бұрын

Those are a nice setup. I myself am using an OXA Aloris style one from Shars.

@samec88 Жыл бұрын

Another method of making the crank is doing a built up crank

@thumperthoughts Жыл бұрын

That's how my motorcycle crank is built, but this is a kit so I went with the original component.