Tutorial how to make engine part 7

How to make V12 engine
(please follow tutorials step by step)

Piston

Answer
 
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25 Answers

There is a missing step between step 14 and step 15. The fillet on the side rectangular surface. What is the radius for the fillet? I used 7mm and it looks similar to that is shown here.

 
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"Step 2" should be "Revolved Boss/Base" not Revolved Cut. Correct me if Im wrong but revolved cut was greyed out, which Im pretty sure it wouldnt work anyways..

 
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I think for Step 12 he means 21mm instead of 11mm. 11 seems WAY too small for it. Just wanted to add that there. Awesome work here by the way! Been following it from the beginning and I'm completely new to this! I'm using Inventor to do mine and while its a little different I'm still able to keep up! Thanks soo much!

 
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I noticed when you made this, you only made room for 2 rings on the piston. What about the oil ring? there should be 3 grooves made in the side of the piston. 2 for the regular rings and 1 for the oil ring. Just a little bit bigger than the grooves for the original two grooves you cut for the rings. Just thought I'd add that for a TAD bit more realism. :) Thank for this tutorial!

 
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I thnk dome wont work in catia and inventor.. u just have to revlove with the appropriate radius value given for the dome..

 
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In odreder to create dome on top the piston in Inventor , create work plane in front view in the middle of piston draw sketch of triangle 5mm vertical 45 mm horizontal connect to ends and maneuver that filet portion up so you don't end up and revolve 360 degree and you should be all set .

 
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I'm very very new with SW. I learn new commands all the time. Some commands You can only dream in ACAD2008. I'm this far I just hope I don't get stuck to something (fingers crossing). GOOD.

 
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thanks a loy but there is missing step ;)

 
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So far this tutorial had missing steps not many, but it is still amazing with what you can do with this software

 
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The fillet radius at the bottom (or top) that is missing should be 10mm so it lines up with the extruded bits.

 
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can any one tell what the dimensions might be in step 9

 
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can't find the dome command in inventor -again - :3

 
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SIR COULD U PLS TELL ME THAT HOW A DOME CAN BE MADE IN CATIA?

 
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I agree with the dimensions thing. Please fully constrain your skethes. I makes following the tutorial a bit hard without all the needed dimensions.

In step 7, why not extrude up to surface and avoid any problems a blind extrude might give, if you make any design changes?

 
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What Fillets did you use on the outside cuts?

 
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Johnny, on a modern racing engine, there is only 2 rings. A fire and an oil ring, to reduce the frictions.

 
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For the dome in Inventor, I used a curve and just revolved it around the top of the piston, similar to what the above user did

 
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The dome tool is a redundant tool and why it is not included in other programs. To create the dome in CATIA, start by open a side profile sketch. Create a "three point arc Starting with limits" and have the limits at the edge of the piston and 5mm above the piston at the central axis. The third point should snap when it creates an arc that touches the other side of the piston. Then exit workbench and use the shaft tool. Hope that helps

 
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If by any chance someone could clear up step 7 for me, that would be great, It isn't really working for me.

 
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