Problems using rod and piston animation

And – please feel free to post a full picture of your work – I luv steam !!!

Looks good !!!

Regards,
Scott

i don’t know if I am having a major seniors brain cramp or not,but I am having a problem doing the animation for the rods and piston for a new engine I am building.I have 3DC ver 7.1.2 and have used the animation program many times before.This is a ten wheeler I am building 4-6-0
The piston rods are a child of the Wheels2 group and the piston is a child of the main group.
See enclosed picture of the problem I am having. I hope somebody can help

The central axis of the piston/cylinder must pass through the centre of the wheel, otherwise you’ll get a very lumpy ride <!– s:) –><img src="{SMILIES_PATH}/icon_e_smile.gif" alt="" title="Smile" /><!– s:) –>

If a cylinder is above the wheel axis it will need to be inclined.

See first section here:
[img:k9z9ra9r]http&#58;//steam4me&#46;railpage&#46;org&#46;au/trainsim/tutorias/Steam3DC/part_5&#46;htm[/img:k9z9ra9r]
<!– m –><a class="postlink" href="http://steam4me.railpage.org.a…/Steam3DC/part_5.htm">http://steam4me.railpage.org.a…/Steam3DC/part_5.htm</a>&lt;!– m –>

Where the cylinders are inclined by 2.7 degrees – this can be calculated from the drawings.

Thanks Paul
It is tough getting old.I don’t know how many times I looked at the plans for this engine and didn’t pick that up.As I said a major seniors brain cramp…….