Crankshaft.

geo7 · February 19, 2011, 10:18:58 AM

Sure someone can advise any obvious mistakes, still learning.

George.

colej · February 19, 2011, 02:07:27 PM

Great on the mechanical design George.
If you are shooting for photo-realistic, may I give some observations, constructive criticism?
1. Balancing on the end of the crank gives an unnatural appearance, you may want to think of position in a more natural angle
2. the radial bearing is a bit too white, some dark blue/grey to the chrome material metal will help
3. camshafts are typically cast metal with only the bearing surfaces get machines to a smooth surface.
4. ball bearings are usually of a high Rockwell hardness and the chase is usually softer which would be a more grayish blue
5. the piston rod looks great, but appears to be a cast bronze material?

Great job on the CAD model, very well proportioned

john

geo7 · February 19, 2011, 03:29:10 PM

Thanks John as always open to help.
The crank is that way up as I was having some trouble rotating it, and tried to rush ahead with the render.
The reason for the dark chrome is to try and show the ground polished outer faces?
The bearings I simply struggled with.
The Rod is forged and copper plated for the hardening process on the exposed faces, this is how standard rods look.
Thanks for the suggestions.
George.

colej · February 19, 2011, 03:48:48 PM

for the radial bearing, try "Chrome" but change the RGB to 190, 190, 202
and bring the roughness to about 0.020
leave the balls as straight chrome.
did that help any?

geo7 · February 19, 2011, 04:00:34 PM

Thanks I will give that a try.

geo7 · February 20, 2011, 02:13:03 AM

John
Working on the bearing. Thanks for the advise.
Here is a photo of a real crank and rod, shows copper bronze and machined ground face.
Geo.

geo7 · February 20, 2011, 02:37:31 AM

John
Any better ?

Thanks Geo.

colej · February 20, 2011, 12:44:04 PM

Wow! that little change made a big difference yes?
looks great!

john

geo7 · February 20, 2011, 02:43:58 PM

Yep. Thanks for your help, get there one day !
Geo.

Speedster · February 20, 2011, 04:00:23 PM

Wow! Good job on that last image. Colors are spot on. Now, try the attached texture to the ID and OD, using cylindrical projection. Play with scale and intensity as well. Enjoy!
Bill G

geo7 · February 20, 2011, 05:35:01 PM

Bill.
Thanks very much for your help, I will give it a try tomorrow.
Colours are down to John, the rest is luck !!!
Geo.

colej · February 20, 2011, 05:48:29 PM

Bill,
Thanks for the texture, It was so intriguing I had to give it a shot myself

I used chrome and changed the color to 190,190,202, increased the roughness to 0.040.
using bill's texture I brought the intensity down a hair and jacked the scale up a bit

geo7 · February 21, 2011, 02:21:47 AM

My effort Bill.

Thanks Geo.

geo7 · February 21, 2011, 04:47:35 AM

And

Geo.

colej · February 21, 2011, 01:08:03 PM

very nice George, much more realistic.