I am going to try to get things as close to actual as I can. But keep in mind that I'm an extreme novice when it comes to drawing/modeling. I've no formal training or schooling. Simply tools and patience.
This thread will be updated as I finish parts and there are lots of them. I'm in no rush either, so don't depend on anything being finished in a few days or weeks. This is in my spare time, at my leisure. I will not take special requests or skip ahead. This is a learning process for me.
This post will be updated as things are finished. Or as I edit parts for accuracy. Meaning, don't depend on the same picture being here forever; they are subject to change. (if you like it, best to save it) I will amend pictures as to their revision #.
When complete the title will be edited to reflect "completed".
And I'm more than open for criticism, advice, questions and advice. Just ask.
Zetec Connecting Rod: (revision #1)
To build the Crankshaft I had to figure out a few dimensions, journal widths and counterweight widths as well as counterweight diameters. All of those are best guess based on my below drawing:
If you need any measurements I'd be happy to oblige. I just so happen to have a 2.0L Zetec completely dismantled down in my garage. It wouldn't be a bother to get a few for you. Just let me know if you need anything specific.
Likewise I had a disassembled oil pump I can take measurements for you. also have pistons, connecting rods, springs, and retainers. just need to get new batteries for my calipers.
That is a pretty spiffy tutorial. As a whole, a good way to learn about modeling is to take a real piece in your hand and model every detail. Some parts look simple but modeling them can be deceptive or require patterns which as best created off the three basic planes.
For the most part I have used Pro/E and Creo 2.0 and I have not used AutoDesk Inventor. I really do not have much in the way of advice, but if you get stuck odds are you can find what you need on Google. People will approach modeling things very differently and sometimes it is good to simple look at other peoples approaches or to look at what they have created, figure out how you would do it, and then look at what they did.
I have spare engines, accessories, heads-a-plenty, etc. Both SVT and zetec. So I shouldn't need any measurements, unless I get lazy.
Thanks for the offer though.
Con Rod updated.
Still not quite how I want it, but closer. And the measurements now match the Crank journals.
This is quite the task you've undertaken. I'm a mehanical engineer and have designed on Inventor, AutoCAD, Solid Edge, Unigraphics and Catia V5. So if you get stuck I can probably help you. Also, when you're done with your models would you mind forwarding them to me as IGES or STEP files? I would love to tinker around with them on Solid Edge. Let me know if you need any help. I can probably help you model some items in my spare time if you like. Let me know.
Woahhh !! That is patience/perseverance !!! I'm halfway through my degree in mechanical engineering so I could probably help if a problem arise ( I work mainly with Solid Edge and SolidWork ).
How do I "constrain" the assembly to keep the pistons as they should be?
I've tried a "directed angle" constraint, piston top vs crank main bearing axis, 90*. No go.
And a few others 90* to the crank centerline. Nothing seems to work as desired.
The wheel is grounded. So when I grab a counterweight I can rotate the assy. FWIW.
How do I "constrain" the assembly to keep the pistons as they should be?
I've tried a "directed angle" constraint, piston top vs crank main bearing axis, 90*. No go.
And a few others 90* to the crank centerline. Nothing seems to work as desired.
The wheel is grounded. So when I grab a counterweight I can rotate the assy. FWIW.
You can align the bottom or top surface of the piston (assuming its a flat surface somwhere). To the X, Y or Z planes depending on your orientation. Remember to turn off the distance and make it a "floating" distance. This will keep the surfaces parallel. Also if you designed everything on the same center-line it would be good to mate/align the centerlines of the pistons to whatever plane is the centerline of your assembly. Let me know if this helps.
It helped, but wasn't possible the way I took your descriptions.
I ended up drawing a temporary half bore to hold everything straight.
Aligned the piston tops and centerlines.
Aligned my 1/2 bore to my wheel.
Did a tangent on the piston the bore is around.
Works.
I tried to figure out how to animate it and show you/everyone, but that process I haven't mastered yet. Doesn't help that my internet isn't very reliable right now.
I did find out Showcase is too big to run well on my laptop. LOTS of processor required for it, holy cow.
Thats right you're using Inventor. Sorry had a lapse of the program you're on. Well good to know it gave you a good direction! You're models look good so far. just keep updating your progress. Seems like to are trying to be a little flashy with showing a moving model, lol. Dont worry about that. I'm impressed you've trudged on this far. I haven't done motion on Inventor. But Solid Edge is pretty easy to do and export as a movie file. Can't remember the extension off hand. Keep up the good work and you can add motion after you're done.
Inventor just requires a lot of computational power to do the movie. This was 12 years ago but we used it on a program to make a 30 second clip of a robot we had physically built move around and perform "actions". I am sure the tool for 3D movie and manipulation has greatly improved since then.
There is the top view of the exhaust ports as they are right now. I don't like how they turned out though.
The short side radius is too long/tall, they don't merge quite right (at about the right point though) and I need to figure out how to flatten the bottom at the exit.
Used the "Sweep" option to build them. Kind of a PITA. You have to use 3 planes to get the shape that I have now.
I'm thinking to get it just the way I want I'm going to have to use at least 5. Real tedious. But you can make some really intricate shapes.
I want to add a turbo to my 2003 ZX5, and I'm planning on building the exhaust manifold using 3D CAD and printing it on a 3D printer to make a mold and cast it.
But I need to check make sure it all fits in the space. I was looking for a CAD file of the engines block, cylinder head so I can attach my model to it for a space check, proper angles and such.
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