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Titanic stuart triple compound crankshaft balance weights part 8

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model engineering adventures

model engineering adventures

Ай бұрын

After having a go at machining the castings I decided to make them I feel a better way. If you were wondering how long it would take... well I made 6 of these...

Пікірлер: 15
@EnglishHobbyMachinist
@EnglishHobbyMachinist Ай бұрын
Sometimes castings can be harder to fabricate into the intended part than bar stock, that's why I prefer to build from scratch "usually more to hold on to" Nice job 👍
@StuartsShed
@StuartsShed Ай бұрын
That’s an excellent approach to making those awkward parts. Very well planned. Your mandrel for the castings was a good idea too.
@modelengineeringadventures
@modelengineeringadventures Ай бұрын
Thanks Stuart working on the heads now there must be over 50 holes to drill and tap
@CreaseysWorkshop
@CreaseysWorkshop Ай бұрын
It's a really good idea to put a piece of thick vinyl or leather on the front of your carriage to shield your lathe bed from chips and other abrasive substances.
@modelengineeringadventures
@modelengineeringadventures Ай бұрын
I normally do have an aluminum catch tray...but the leather idea is a useful one.
@MrFactotum
@MrFactotum Ай бұрын
hi Andy great job, at the beginning, in my head i was saying make them from solid, then you stole my thunder🤣🤣 well done they look great👍👍👍👍👍👍 regards Kev
@modelengineeringadventures
@modelengineeringadventures Ай бұрын
Thanks Kev
@jobkneppers
@jobkneppers 26 күн бұрын
Dear sir, some, maybe, suggestions from my side. As a first; I would start with a solid bar too but would mount it in a horizontal dividing head and support it with a center and/or machining jack. If you use a center then the end needs a part left untouched to keep the center at work. In this setup you can easily mill all the required angles on the already turned to diameter bar. After this I wouldn't part the pieces of in the lathe like you did. I think it's a somewhat sketchy set-up with risks (e.g. breaking a parting tool) I would saw them close to the desired width and mount them with an added counterpiece in the chuck of the lathe (or a big soft collet) and machine the recess and chamfer this side. Turn it 180 degrees in the collet or soft jaws, clock them parallel and finish the part. I know this is just another way to get to Rome but I would certainly avoid parting of the part with an interrupted cut and quite a stick out from the chuck. If it grabs your done with tooling and parts. Thank you for sharing your work. Best! Job
@modelengineeringadventures
@modelengineeringadventures 26 күн бұрын
All the above is very useful info thank you for taking the time to comment. I think I was lucky it was only cast iron. In hindsight, all of the above is very correct.
@johnfriend240
@johnfriend240 Ай бұрын
Watch the tool stick out; you can shorten up on these operations for more rigidity, less chatter, especially with the interrupted cuts.
@kevinsellsit5584
@kevinsellsit5584 Ай бұрын
At 24:12 "Now I was nervous about this double interrupted cut"... nervous? I was hiding under my desk!
@modelengineeringadventures
@modelengineeringadventures Ай бұрын
ha ha ha
@Steviegtr52
@Steviegtr52 Ай бұрын
Hi Andrew, nice work. Do they have to be a specific weight. Steve.
@modelengineeringadventures
@modelengineeringadventures Ай бұрын
thanks Steve....not really just to dimensions on the plan
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